JPH02199437A - Camera - Google Patents

Abstract

PURPOSE:To easily recognize abnormality and to execute photographing again not by special operation but by the same operation as an ordinary photographing by returning a photographing lens to an initial position which is different from an ordinary position when the actuation of the photographing lens is stopped by the abnormality. CONSTITUTION:A main CPU 201 and a sub-CPU 202 are used for the control circuit of a camera and the transfer of information is alternately executed by a serial interface. The CPU 201 executes the control of a driving system or the control sequence of photographing operation and the CPU 202 gives the switch information to the CPU 201 and makes it execute the various control. The control circuit executes a prescribed flowchart when the drawing abnormality occurs while a lens barrel is drawn. For example, when the drawing abnormality occurs during the process of AF lens driving that the lens barrel is drawn to the focusing position from the initial position of the ordinary photographing and the abnormality of the driving is recognized, the lens barrel retreats to the stopping position of collapsible mounting. A user can easily recognize the occurrence of the abnormality by the movement which is different from an ordinary time and the photographing is made possible again by executing the operation at the time of the holding state of the camera.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera that compensates for normal operation of a photographic lens.

[Prior Art] Some cameras, for example, have a photographing lens that is retracted by driving a motor, and when taking pictures, the photographing lens is moved from an initial position to a predetermined position to take pictures.

In such a camera, if an external force is applied when the photographing lens is driven, or if the photographing lens stops even though the motor is being driven due to other reasons, a large load may be placed on the motor.

For this reason, for example, as disclosed in Japanese Patent Application Laid-Open No. 175721/1983, it is possible to detect that the photographic lens has stopped abnormally, cut off the power supply to the motor, and then drive the photographic lens to a predetermined position. Some motors release the load on the motor and then energize the motor again so that even after an abnormal stop, the same operation as before the stop can be performed.

[Problems to be Solved by the Invention] In a camera that takes pictures by moving the photographic lens from an initial position to a predetermined position, some abnormality occurs in the drive means for moving the photographic lens or other parts, and the photographic lens does not reach the predetermined position. In the case of stopping without reaching the
Even if a solution such as that disclosed in Japanese Patent No. 175721 is taken to protect the driving means, the behavior of the photographing lens after an abnormal stop is not significantly different from that when photographing is normally completed.

Therefore, with this alone, the user may mistakenly believe that the photograph was taken normally, and there is a risk that the user may miss a unique photographing opportunity. To solve this problem, the camera should be equipped with a separate warning means, such as a buzzer, to warn when an abnormality has occurred and the photographing lens is not moving as expected, and photographing has not been completed normally. It is necessary to inform the user.

In general, cameras are designed to be small and lightweight to improve portability and operability, and to have a structure as simple as possible to improve reliability. For this reason, it is not desirable to increase the number of warning means, which also leads to an increase in costs, and it is extremely difficult to give a warning that appropriately points out and expresses what is abnormal.

This invention has been made in view of the above problems, and when the operation of the photographic lens stops abnormally, it is moved to the initial position to protect the driving means, issue a warning of the abnormality, and provide a simple and easy-to-understand system for the user. The object of the present invention is to provide a camera that can perform re-shooting operations through simple operations.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a camera that performs photography by moving a photographing lens from an initial position to a predetermined position. It has a driving means, a detection means for detecting that the photographing lens has stopped for a predetermined period of time during movement, and a control means for operating the driving means in response to a signal from the detection means to return the photographing lens to its initial position. It is characterized by

[Operation] When the camera of the present invention detects that the photographing lens has stopped for a predetermined period of time during movement, the driving means is actuated based on this detection signal to move the photographing lens to a certain position. In this way, if the shooting lens stops operating abnormally, the shooting lens moves to a different position than usual and stops, allowing the user to detect the abnormality and restart the camera using the same operations as normal shooting. It can be activated for photography.

[Example] Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

1 to 6 show a camera to which the present invention is applied. FIG. 1 is a front view of the camera, FIG. 2 is a rear view of the camera, FIG. 3 is a plan view, and FIG. 5 is a view showing the display on the finder, and FIG. 6 is a view showing the display on the back cover.

The camera of the camera body is connected to the main body 10 as shown in FIG. front cover 20,
It is composed of a decorative panel 30 and a back cover 4o, and a front cover 2
A decorative panel 3o is engaged with the front side of the front cover 2.
0 is engaged and screwed so as to cover the main body 1o. The back cover 4o and the battery M41 are integrally assembled to a bearing portion 42a of a main body mounting body 42 via a hinge shaft 43, and the main body mounting body 42 is engaged with the main body 10 and further fixed with screws.

The main body 10 is formed with an unexposed film storage chamber 14 and an exposed film storage chamber 15 with an image frame section 13 in between. The cartridge 1 is stored in the unexposed film storage chamber 14 and the exposed film F is wound up on a reel 16 provided in the exposure film storage chamber 15.

A front base plate 17 is provided in the center of the main body 10, and a lens barrel frame 2 equipped with a photographing lens 50 is mounted on this front base plate 17.
2 is provided integrally with the lens barrel 51 and movable in the optical axis direction,
The barrel is designed to collapse.

Further, a release button 2, a close-up button 3, and a main switch button 4 are provided on the upper surface of the front cover 20.

Photographing lens The photographing lens 50 is composed of four lenses in four groups, and is attached to the lens barrel frame 22 via supports 52 and 53, and the lens barrel frame 22 is attached to the lens barrel 51. This photographing lens 50 uses a between-win lens in which a shutter 54 is disposed between the lenses.

Finder Mechanism The finder mechanism uses an Albada bright frame see-through finder. This finder 60
is provided with displays as shown in Fig. 5, including shooting range frames 61, 62, AF frame 63, rough distance measurement completion (lit) and distance warning (blinking) displays 64, and close-up mode (lit). A display 65, a grit mark 66, etc. are provided.

During photographing, the close focus adjustment mechanism changes the distance between the photographing lens 50 and the film plane according to the distance to the subject, and adjusts the focus so that the image of the subject is correctly focused on the film plane. Projection AF as a distance measuring mechanism for this focus adjustment
A lens 70 and a light-receiving AF lens 71 are provided on the upper part of the front base plate 17, covered with AF windows 72 and 73 of the decorative panel 30, and infrared non-scan active automatic distance measurement is adopted. A lens barrel 51 holding a photographic lens 50 is extended by the drive of a motor 170, and the lens group is driven straight to perform focus adjustment. The lens barrel 51 has a photographing window 55 on the front side, and this photographing window 55 is covered with a lens barrier 140 to protect the photographing lens 50 inside.

This lens barrier 140 begins to open when the lens barrel 51 is extended, and completely closes when it reaches the initial position for normal photography.
When the lens barrel 51 moves backward and reaches the collapsing stop position, it is completely closed. That is, when the lens barrel 51 is retracted and the camera is in a portable state, the lens barrier 140 is completely closed.

Zie Lord and Two Emperors 1 The shutter mechanism has the function of providing the necessary amount of exposure to the film over time, and also the function of blocking unnecessary light outside of the exposure time. A shutter motor 80 is driven to open and close the shutter 54, which is a program shutter and further uses a self-timer.

The self-timer uses the SSI mode selection button (described later).
The shutter 54 is activated by operating the self-timer mode and pressing the release button 2, and when 10 seconds have elapsed since the release button 2 was pressed, the shutter 54 opens and closes. While the self-timer is operating, the self-timer display light emitting diode 5 LED 214 lights up for about 7 seconds, and then blinks for about 3 seconds. When the opening/closing operation of the shutter 54 is completed, the self-timer mode is automatically canceled and the automatic strobe light emission mode is restored. If you want to cancel the self-timer mode, just press the main switch button 4.

1 Toyo Mouse Dan Toyo Ao In order to give proper exposure to the film, the amount of exposure is adjusted by measuring the brightness and darkness of the light on the subject side that fits on the screen. A CdS (cadmium sulfide) light receiving element 90 is used to convert an electrical signal according to the amount of incident light. This light receiving element 90 is attached to the front base plate 17 and covered by the AE light receiving window 91 of the decorative panel 30.

The exposure control range is 1 set of film sensitivity.

0, the EV value of the subject brightness is in the range of 5 to 17, and the EV
If the value is 9 or less, the flash will automatically fire.

This camera uses film in a cartridge with a DX code, and the film sensitivity is automatically set from 15O50 to 3200 as soon as the film is inserted into the camera.
All non-DX films are automatically set to a sensitivity of 15O100.

The flash tube 100 of the 5Σdanko-heki strobe mechanism is fixed above the unexposed film chamber 14 of the main body 1o, and is covered by the window 101 of the decorative panel 30. In the automatic strobe light emission mode, the flash is automatically emitted when the subject brightness is lower than a predetermined value, and is always automatically charged, and the capacitor 7 of the charging circuit is arranged close to the exposed film storage chamber 15 of the main body 1o.

Film Winding The film winding mechanism uses an automatic winding system using a motor 110 and is driven via a winding unit 111. After closing the back cover 40, the film rewinding mechanism starts automatically by pressing the release button 2.The film rewinding mechanism automatically rewinds the film when the last frame has been photographed, and automatically rewinds the film when the rewinding is completed. Stop. For rewinding, the film counter is decremented and the film feed mark is displayed in the opposite direction.

In the case of DX film, rewinding is automatically stopped after the leading edge of the film is wound into the cartridge, and in the case of non-DX film, rewinding is automatically stopped leaving the leading edge of the film intact.

■ The camera back 40 has a control display section 12 for auto date and shooting information.
0 is provided through the back cover base plate 44, and a film confirmation window 6 is further formed. Further, the LCD decorative plate 130 of the camera back 40 includes a date display section 121 and a shooting information display section 12.
2 is provided. Furthermore, the mode switching button SSI
There are provided a date mode switching button SS2, a correction point selection button SS3 for selecting a correction point for year, month, date, and time, and an addition button SS4 for adding up the date display.

Each time the mode switching button SS1 is pressed, automatic light emission mode, forced light emission mode, non-light emission mode, and self-timer mode are cycled and switched in this order. In the flash automatic flash mode, the slot flash automatically fires when the subject brightness is lower than the brightness, and in the forced flash mode, the flash flash always fires every time a photograph is taken.

In addition, in the non-emission mode, the mode switching button SSI
If you keep pressing , the mode will switch from self-timer mode to mid-film rewind mode, and press mode switch button S31.
By pressing the release button 2 while pressing , rewinding of the film is started. When rewinding is complete, the camera automatically returns to automatic strobe firing mode.

One 3V lithium battery 8 is housed in the battery compartment 18 of the main body 10, and can be replaced by the user by opening and closing the battery cover 41. In addition, it functions as an autodate and also as a backup power source for the main power source.
One coin battery 9 of v, battery storage compartment 45 of back Ji40
It is set in.

Auto Date A digital clock with a liquid crystal display is built into the control display section 120 as an auto date, and the date display section 121 provided on the LCD decoration plate 130 of the back cover 40 displays "year, month, day,"
"Month/Date", "Day/Month/Year", "Date/Hour/Minute" or "rOFF mode" are displayed, and the above-mentioned date mode switching button SS2 and correction part selection button SS3 for selecting the correction part of the year, month, day, hour and minute are displayed. , is adjusted by operating the addition button SS4 for adding the date display.

As shown in FIG. 6, the photographing information display section 122 of the 1L mouse tray feces indicator back cover 40 includes a battery remaining amount display 122a and a film counter 12.
2b and a film feed indicator 122C.

In addition, a strobe charging mode 122d, a self-timer mode 122e, an automatic flash mode 122f, a forced flash mode 122g, and a non-flash mode 122h are switched and displayed, and all displays are liquid crystal displays.

Figures 7 to 10 show the operating mechanism of the lens barrel. Figure 7 is a cross-sectional view of the lens barrel, Figure 8 is a cross-sectional view taken along Figure 9 is a cross-sectional view of DC-IX in Figure 7, and Figure 10 is the 8th cross-sectional view.
It is a sectional view taken along line XX in the figure.

As shown in FIG. 8, a support frame 21 is provided on the front base plate 17, and a lens barrel 51 is provided on the support frame 21 so as to be movable back and forth in the optical axis direction, and the lens barrel 51 is collapsible. moreover,
A lens barrel frame 22 is fixed to the lens barrel 51, and the two operate as one.

A support portion 22a formed at the lower end of the lens barrel frame 22 supports the bearing 1.
57 to be slidably supported on a guide shaft 158, and as shown in FIG. Guide shaft 1
One end of 58 is attached to the presser plate 161, and the other end is attached to the front base plate 17.
One end of the drive shaft 160 is rotatably supported by a presser plate 161 fixed to the front base plate 17, and the other end is rotatably supported by the front base plate 17 via a bearing 162. The rotation 160 causes the lens barrel frame 22 to move linearly in the optical axis direction. A tip 163a of a position regulating member 163 inserted through the front base plate 17 is in contact with the support portion 22a of the lens barrel frame 22, and this position regulating member 163 is supported by the front base plate 17 via a spring 164.
Backlash between the drive shaft 160 and the female threaded bearing 159 of the lens barrel frame 22 is absorbed so that the lens barrel frame 22 can operate accurately. The female screw bearing 159 is supported by a presser plate 165 fixed to the support portion 22a of the lens barrel frame 22.
This holding plate 165 prevents the female threaded bearing 159 from coming off from the lens barrel frame 22.

The drive shaft 160 is provided with a drive gear 166, which is connected to an intermediate gear 167.1 as shown in FIG.
The output gear 171 of the motor 170 is meshed with the output gear 171 of the motor 170 through the intermediate gears 167, 168, 169, and the power is transmitted to the drive gear 166 through the intermediate gears 167, 168, 169. The drive shaft 160 is rotated by this.

The motor 170 is provided with rotating blades 1 and 2, and the number of rotations thereof is detected by a photocoupler 173 and used as control information for moving the lens barrel 51 in the optical axis direction. Note that a photocoupler is a detection element in which a light source and a light receiving element are arranged facing each other, and detects whether or not there is an opaque object between the light source and the light receiving element.

Further, as shown in FIG. 8, an actuating member 174 is provided on the mounting portion 22a of the lens barrel frame 22, and a contact piece 175 is provided on the actuating member 1F4.

As shown in FIGS. 8 and 10, this contact piece 175 is configured to slide on a control board 176 in conjunction with the lens barrel 51. This control board 176 is attached to the wall 17b of the front base plate 17, and the control board 176 is provided with a power supply contact 175b and camera body side contacts 1750 to 175g, and when the lens barrel 51 is extended in the optical axis direction, Contact piece 17
5 provides the control section with information on the collapsing stop position Y1, the initial position Y2 for normal photography, the base point Y3 for counting the amount of advance for normal photography, the initial position Y4 for close-up photography, and the base point Y5 for counting the amount of advance for close-up photography. With these, you can use the photographic lens 5.
It constitutes a switch that detects the 0 position. This switch functions as a lens position switch or an AF trigger switch depending on the relationship with the contacts 1750 to 175g on the camera body side.

This control board 176 has a protrusion 176a at one end engaged with a recess 17c of the front base plate 17, and a stopper 177.1 of the presser plate 161 with the other end 176b fixed to the front base plate 17.
78 and is supported movably in the optical axis direction. A position adjustment window 176c is formed in this control board 176, and an adjustment bolt 179 is screwed into the wall 17b of the front base plate 17 through this position adjustment window 176c. Mounting shaft 179a of this adjustment bolt 179
is located at a position offset from the center of the head 179b, and the control board 176 is moved in the optical axis direction by rotation of the adjustment bolt 179 to adjust the position.

As shown in FIG. 7, a shutter drive mechanism is arranged inside this lens barrel 51, and a motor 80 is driven by operating the release button 2, and the power is transmitted from an output gear 81 to intermediate gears 82, 83, 84, . Shutter ring 86 via 85
The transmission is transmitted to the toothed portion 86a, which rotates the shutter ring 86 and opens and closes the three shutter blades 54c. Each of these shutter blades 54c
is rotatably supported by the lens barrel 51 via a support pin 87, and an engagement hole 54a is formed at the base of the shutter blade 54c, into which an operating pin fixed to the shutter ring 86 is inserted. 88 is engaged, and the rotation of this shutter ring 86 opens and closes the shutter blades 54c.

The shutter ring 86 always has its protrusion 86b aligned with the lens barrel 51.
It is set so as to come into contact with a stopper 89a fixed to the side, and the stopper 89b serves as a position control during the opening operation.

A contact piece 54b is formed on the shutter blade 54c, and a photocoupler 99 detects this contact piece 54b to manage the time of shutter control and detect an abnormality in the shutter.

Photographic Lens Replacement Structure In the camera of this embodiment, when the release button 2 is pressed, a series of operations related to photographing begin, and the exposed film winds up one frame and ends. Lurie's switch S1
is turned ON, and in the subsequent stroke, the second release switch S2 is turned ON. Lurie's switch S1 is O
When the time reaches N, shooting preparation operations such as distance measurement to measure the subject distance and photometry to measure the brightness of the subject are performed, and when the second release switch S2 is turned on, the shutter opens and closes.
Photography and post-photography processing operations such as film winding are performed.

The closest shooting distance of general cameras is often set at around 0.6 to 1°2m, but with the camera of this example,
A normal photography mode and a close-up photography mode are provided in order to enable photographing of objects at a closer distance, so-called close-up photography, and to expand the photographable distance range. In the normal shooting mode, it is possible to shoot subjects from a predetermined normal shooting close distance to infinity (this range is called the normal shooting range), and in the close shooting mode, it is possible to shoot subjects from a predetermined close shooting close distance to a predetermined close shooting distance. It is possible to photograph objects at long distances (this range is called a close-up photography range), and the close-up distance for normal photography and the extreme distance for close-up photography are matched to make the normal photography range and the close-up photography range continuous. However, for example, three shooting modes, such as a close-range shooting mode, a medium-distance shooting mode, and a long-distance shooting mode, may be provided, or two shooting modes, such as a super close-up shooting mode, a close-up shooting mode, and a normal shooting mode, may be provided.
More than one shooting mode may be provided.

The close-up button 3 is a button for switching the shooting mode. When this button is pressed in the normal shooting mode where the lens barrel 51 is at the initial position Y2 for normal shooting, the close-up switch is turned on, and the lens barrel 51 switches to the close-up shooting mode. reaches the initial position Y4 and stops, and the camera switches to close-up shooting mode. When the close-up button 3 is pressed when the camera is in the close-up shooting mode, the close-up switch is turned on, the lens barrel 51 moves backward, reaches the initial position Y2 for normal shooting, and stops, and the camera starts shooting normally. Switch to mode.

When the lens barrel 51 is at the collapsing stop position Y1 and the camera is in the carrying position, when the main switch button 4 is pressed, the main switch is turned on, the power is excited, and the MAIN CPU 201, which will be described later, starts operating. , a power hold is performed to maintain the excited state of the power source, and the lens barrel 51
is extended, reaches the initial position Y2 for normal shooting, and stops.
The camera goes into normal shooting mode and power hold is released. When the camera is in the normal shooting mode or the close-up shooting mode, pressing the main switch button 4 turns the main switch ON, power is held in the same way as above, and the lens barrel 51 moves back to the collapsing stop position Y1. The camera reaches the mobile position and stops, and the power hold is released. The lens barrier 140 covering the photographing window 55 opens in conjunction with the extension of the lens barrel 51, and closes in conjunction with the retraction of the lens barrel 51 to cover the photographing window 55 and protect the photographing lens 50. It is structured to do this. Furthermore, when the camera is in the portable position, operations other than automatic film loading and film rewinding cannot be performed.

FIG. 11 is a schematic circuit block diagram of a camera to which the present invention is applied.

This camera has MAINCPU201 and 5UBCPU2.
02 is used, and information is exchanged alternately through the serial interface. The MAIN CPU 201 controls the drive system that requires a large amount of current and executes the control sequence for the camera's shooting operation.The 5UBCPU 202 drives the shooting information display section 122 of the camera back unit 203, and also provides switch information to the MAIN CPU 201.
201 is made to perform various controls.

A power supply is connected to the DC-DC converter 204, and the DC-DC converter 204 is activated by power control from the 5UBCPU 202, which is activated when the main switch is turned on or the second release switch S2 is turned on. This causes the voltage Vdd to
201, and the MAIN CPU 201 is activated.

Further, a voltage Vcc is supplied from the DC-DC converter 204 as a power source for the control switches other than the release switches S1 and S2, the main switch, the close-up switch, and the mode changeover switch, and a voltage Vdd is supplied as a power source for each CPU, and a lithium battery 8 The voltage vb is 5UBCP
The voltage vb' of the lithium battery 8 is a power source for a drive system that requires a large current.

In addition, there is a D in the strobe unit 205 that is different from 204.
A C-DC converter is provided.

The activated MAIN CPU 201 contains analog information 20 including battery check information BC5, photometry information AV, temperature information TH for motor driver temperature compensation, and shutter trigger delay time information STD for correcting shutter opening.
It is entered as 6. This battery check information BC is transferred to the 5UBCPU 202 via a serial interface, and the 5UBCPU 202 displays this information as a battery remaining amount display 122a. Furthermore, MAINC
PU2011. : The switch information 207 of the DXXX position switch and AF trigger switch is entered manually.

In addition, distance measurement information is captured as an analog signal from the AF unit 208, and if the distance measurement result is within the photographable distance range according to the shooting mode selected at that time,
A with F white display control by MAINCPU201
In addition, the PLED is turned on, the CULED is turned on in the case of close-up shooting mode, and the LBLED is turned on when the subject brightness is below a predetermined value in the automatic flash mode, and these constitute the F white display 209. , a distance measurement completion and distance warning display 64, a close-up mode display 65, and a brick mark 66 are displayed in the finder, respectively. In addition, the APLED blinks when the distance measurement result is outside the shooting distance range according to the shooting mode selected at that time, and the LBLED lights up when the forced flash mode is on, and when the subject brightness is set to a predetermined value in the non-flash mode. Flashes when the value is below.

When the second release switch S2 is turned on, the MAIN CPU 201 performs lens motor control to control the lens motor driver 210 based on distance measurement information.
The motor 170 is driven to extend the photographic lens 50 and stop it at a predetermined position. At this time, the position of the photographing lens 50 is controlled based on the trigger information of the AF trigger switch, which is output when the contact piece 175 comes into contact with the main body side contact 175e or 175G, and the motor rotation speed information from the photocoupler 173. Since the photographic lens 50 is extended according to distance measurement information, the trigger information from the AFI-trigger switch is used to detect the base point Y3 or Y5 (depending on the selected photographing mode) for counting the amount of extension of the photographic lens 50. Control is performed to stop the motor 170 after a predetermined rotation from the count base point Y3 or Y5. Then, according to the photometric information AV, shutter motor control is performed to control the shutter motor driver 211, and the motor 80 is driven to operate the shutter 54 and expose the film. At this time, the opening and closing of the shutter 54 is detected by the photocoupler 99.

When this exposure is completed, the lens motor driver 21
0 is controlled, and the photographic lens 50 is set to the initial position Y2 or Y.
4 (depending on the selected shooting mode),
A film motor control is performed to control the film motor driver 212, and the motor 110 is driven to wind the film. At this time, while reading the switch information from the perforation switch 213, it is checked whether the film has been wound by one frame.

The 5UBCPU 202 sends a charging signal to the strobe unit 205, and the strobe unit 205 sends a charge completion signal to the 5UBCPU 202, thus performing EF control between the two. Light emission control of the strobe unit 205 is performed by the MAIN CPU 201, and the flash tube 100 emits light. The self-timer display 5 LED 214 is controlled by the external display control of the 5UBCPU 202.

The 5UBCPU 202 is driven by a coin battery disposed on the back cover 40, a voltage Vdd from the DC-DC converter 204, and a voltage vb from the lithium battery 8 via a backup circuit 215 and a reset circuit 216.

Further, switch information 217 such as a release switch, main switch, close-up switch, back cover switch, etc. is input to the 5UBCPU 202, and
has a date module 218, into which switch information 219 from a date mode switch, select switch, and set switch is input, and an LCD drive that outputs a liquid crystal display drive signal for date imprinting and date display. Do this. Also, 5U
The BCPU 202 outputs signals for driving the counter and other liquid crystal displays disposed on the back cover unit 203, and drives the counter LCD. In addition, the back cover unit 20
3 is provided with a mode changeover switch 220, and the mode can be changed by manual operation.

Control circuit sequence FIG. 12 shows the operation sequence of the circuit block of the present invention, and shows the sequence of MAIN CPU 201 and 5U.
It is divided into BCPU202 sequences.

The 5UBCPU 202 receives the IR by the reset signal ACL.
It is initialized by the subroutine, starts operating from the start, and monitors information input to the microcomputer from the MODE=1 determination. Then, when the 51=1 determination turns on the Lurie's switch S1, a film autoload error is determined by the flag ΦAL=1 determination, and if the 51=1 determination indicates an autoload error, the ALS
The ub routine (2) displays an autoload error and ends. Also, the flag ΦREW-EN
If it is determined that D=1 and the film has finished rewinding, R
The process moves to the EWS u b routine (3), where the end of film rewinding is displayed, and even if the No. 1 Lurie switch S1 is ON, it will not operate unless the back cover is opened. Furthermore, if the flag Φ5TT=1 is determined and the shutter is abnormal, the process branches and does not accept the signal.

If these flags are not set, apply a power halt with PH←1 to start up the power, and then turn on the MAIN CPU.
Start 201. When the MAIN CPU 201 starts, the I10 port is set and the RAM is cleared using 110SET and RAMCLR, a battery check is performed using the BCSub routine, and DX switch information is read using the DXSub routine.

Read each piece of information and use the serial interface on the SO to convert the battery check information, DX switch information, and test information into 5 bits of information.
Serially transferred to UBCPU202, BC display Sub
Display the remaining battery power in a routine. Here, if the remaining capacity of the battery 8 is less than a predetermined value, an error E is assumed and the operation is stopped.

If the remaining capacity of battery 8 exceeds a predetermined value, 5UB
SO of CPU202, LD2 of MAINCPU201
In order to proceed to the Sub routine, information on the LD2Sub instruction is sent, and a branch 1 determination is made at the SI of the MAIN CPU 201. When the program moves to the LD2Sub routine, the lens position is checked and the collapsing stop position and the like are determined by flag φSEP.

In the LD2Sub routine, if the lens position is the initial position for normal shooting, the MArNCPU201
The process moves to branch 1 judgment. On the other hand, in the 5UBCPU 202, the lens position is the initial position for normal shooting, and the flag Φ
If rewinding is completed with REW=1 determination,
At So, the REWSub instruction information is transferred to the MAIN CPU 201 and the process ends.

If the back cover is open according to the back cover switch information in 5b=o determination, the flag ΦALB=1 determination causes the process to proceed to the WSub routine and transfer the WSub instruction information to the SI branch 2 determination of the MA I NCPU 201. If the flag ΦC=0 is determined and the counter is zero, the flag φDX=1 is determined to determine whether the loaded film is a DX film or not, and if it is a non-DX film, the MAI is
The ALSub instruction information is transferred to the SI branch 2 judgment of NCPL+201, and the 5UBCPU 202 enters the autoload waiting state, and the MAI NCPU 201 executes the ALS
The autoload operation is performed by the ub routine.

When the film is counted up, or when the counter is zero and it is a DX film, the information sent by 8 by LD2Sub Reaching is judged and the Φ5EP
=1t, the lens barrel 51 is at the initial position for normal photography or close-up photography, so photography is possible, and Φ5EP=OO
In the case of , the lens barrel 51 is at the collapsing stop position, so the process ends as is, and in the case of Φ5EP=01, the lens barrel 51 was extended but stopped at an undetermined position, so it was moved back to the collapsing stop position. Since there is, return to automatic flash mode and exit.

When the lens barrel 51 is at the initial position for normal photography or close-up photography, the second release switch S2 is set to O when 51==1 is determined.
If it is FF, the strobe main capacitor is charged in the CHGSub routine, if it is ON, the flag ΦTEST=1 is judged, if it is in test mode, test processing is performed, and if it is not in test mode, The data is transferred using the serial interface on the SO. Here, the main routine instruction of MatnRout, the mode information of the flag ΦMODE, and the counter information of the flag ΦC are 4-bit information and are transferred to the SI branch 2 determination of the MAIN CPU 201.

The 5UBCPU 202 is waiting in the AFSub routine, and the MAINCPU 201 makes a branch 2 judgment in Sl, and when it moves to the AESub routine, it reads the photometry information, roughly reads the distance measurement information in the AFSub routine, and sends this distance measurement information to the 5UBCPU 202. AFSu
Transfer to routine b. This distance measurement information is R[AF] or R[CAF], where R[AF] is RAM information for distance measurement in normal shooting mode, and R[CAF] is RAM information for distance measurement in close-up shooting mode. The 4 bits are transferred twice.

Then, the 5UBCPU 202 determines 52=1 and waits for the second release switch S2 to be turned on, and the MAINCPU 201 uses the FLEDSub routine to turn on the APLED for distance measurement, and in the case of close-up shooting mode. CULED lights up, LBL when subject brightness is lower than a predetermined value in automatic flash mode or forced flash mode
The ED lights up, and the AFLED decreases points if the distance measurement result is later than the possible shooting distance range or goes further away, and the L
The BLED is in a non-emission mode and blinks when the subject brightness is lower than a predetermined value.

When the second release switch S2 is turned ON by the 52=1 judgment of the 5UBCPU 202, the serial transfer port of Sin changes from the normal low state to the high state and the 5
Send in=1 information to MAINCPU201, 5UB
The CPU 202 waits for 16m5 hours and sets Sin←0 to ensure the transition from the MAINCPU 201's FLEDSub routine to SI, and then sets the flag Φ.
The MODE judgment determines whether the self-timer mode is active or not.

If not in self-timer mode, R[ST
D] Transfer the information to MAIN CPU 201 in 8 bits. This STD information is 8-bit information of the shutter trigger relay time film, and after winding the film,
Information is exchanged in the Sub routine, and the information is sent to M.
Load it with AINCPU201's WSub routine, 5
tJBCPU202, this information is stored in 5UBCPU202, and this information is transferred to MAINCPU2.
Sent to O5. For self-timer mode, 5
After moving to ELFSub reading, transfer R[STD].

When this STD information is sent to MAINCPU201, S
After passing through I, the 5UBCPU 202 waits in the 5DSub routine, and the MAINCPU 201 sets DATE←1 when the ISO zone is 4 or higher and 15O400 or higher, and changes the lighting time for imprinting. Then, DATEX←1 is set, and this signal is output for 5 ms as a signal for emitting light to imprint the date. When this signal is output, approximately several 10 m5 of light is emitted and the date is imprinted.

When this is completed, initialize DATEX-0 and DATET←0, and use the AFLDSub routine to initialize the shooting lens 5.
0 is fed out, and the shutter 54 is opened and closed in the 5DSub routine. If the activation signal for the shutter 54 does not come during opening or closing of the shutter 54, a flag ΦSTT is generated. If a failure occurs during the opening or closing process of the shutter, the flag Φ5TT=
1, and this information is sent to the 5UBCPU 202 to determine if there is a problem.

If there is no abnormality, the flag Φ5TT=O is sent, and MA
The INCPU 201 returns the photographing lens 50 in the LDR3ub routine, moves to the WSub routine, and winds the film.

In the 5UBCPU 202, it is determined whether or not the self-time mode is set using -yg φMODE, and if it is not the self-time mode, the process shifts to the film winding of the WSub routine. In the case of the self-timer mode, the mode display is set to automatic light emission mode, the flag φMODE is set to automatic light emission mode, and then the process moves to winding of the WSub reachin film.

The operating sequence as described above takes place, but with 5 UBC
In the PU 202, the mode switch is activated from the start, and before the Lurie's switch S1 is pressed, it is determined whether the mode switch is ON or OFF in the MODE=1 determination, and the MODE is set to 1.
That is, if the mode switch is ON, the flag φ5TT=1
Shutter trouble is determined based on the judgment, and in the event of an abnormality, no further signals will be accepted. If it is normal, the mode display is changed, and the mode information is also changed using the flag ΦMODE.The self-timer mode is determined using the flag ΦMODE.If it is not the self-timer mode, the M
Wait until the mode switch is released when ODE=O is determined, and then return to MODE=1 determination.

In the case of self-timer mode, set 1 to the timer by setting T←1s.
When the second is set and the mode switch is ON for 1 second or more when it is determined that MODE=1, the feed display is evacuated when it is determined that it is over, the self display is set to 0FFL, and the rewind display is blinked. Then, in this blinking state, the second
When release switch S2 is turned on, PH←1, ΦA
Start MAIN CPU201 as L4-0,
Restore the feeding display, set it to automatic light emission mode, set the feeding display to 0FFL, display the battery tick in the BC display sub routine, and MA the REWSub instruction information in So.
The data is serially transferred to the I NCPU 201, and the film is manually rewound in the middle using the REWSub routine.

Furthermore, if the second release switch S2 is not turned on, if the MODE=1 determination indicates that the mode switch is OFF, the rewind display is turned off, the feed display is roughly restored, and the automatic flash mode is displayed. , flag φMOD
Set E to automatic flash mode and exit. If it is determined that MODE=1 and the mode switch is ON, it waits for the second release switch S2 to turn ON.

Then, when the 5UBCPU 202 determines that 51=1 is OFF and the main switch is turned on and 5cn=1, collapsing switching is performed. Here, the collapsible barrel switching flag φScu is 0, and the PH
← Set it to 1 and start the MAIN CPU 201. Further, when the close-up switch is turned on and 5cu==1, close-up collapsing switching is performed and the collapsing switch flag is set to ΦScu←1.

Flag ΦBC, ΦDx1φT from MAINCPU201
After receiving the EST information, display the battery check using the BC display subroutine, and display the LDIS using the serial output of So.
ub instruction, flag ΦScu information is MAIN CPU201
will be forwarded to. This information is MAINCPtJ201
is sent to the SI branch 1 judgment, the lens barrel is driven in the LDI Sub routine, and the flag ΦSEP information is set to 5UBCPU.
202, and in the LDI Sub routine, the lens position is determined from this flag ΦSEP information. flag Φ
When 5EP=11, the lens barrel 51 is at the initial position for normal photography or close-up photography, and the strobe capacitor is charged in the CHGSub routine. Flag φ5EP=O
At O, the lens barrel 51 is at the collapsing stop position, and the flag Φ5EP
At =01, the lens barrel 51 was extended but stopped at an undetermined position, so it moved backward and was at the retracted stop position, the normal shooting mode was selected, the automatic flash mode was displayed, and the flag φMO was set.
Set the DE to automatic flash mode and exit.

The 5BSub routine of the 5UBCPU 202 checks the status of the camera back at 1 second intervals, and monitors whether the camera camera back is opened based on camera back switch information.

Next, the test mode will be explained. This test mode is for checking the camera's performance, and tests are performed using the counter display on the back cover. Flag φTES
When determining T=1, 5 LED←1 in test mode
By setting the test mode, the test mode is confirmed and four types of tests are performed: automatic flash mode, forced flash mode, non-flash mode, and self-timer mode. TESTI information is transferred in automatic flash mode, and the second Lurie's switch S1
When is ON, the zone information when metering is displayed, and when the second release switch S2 is turned ON, the shutter is released and the automatic exposure mechanism can be tested, and both metering information and exposure amount information are tested. .

TEST2 information is transferred in forced flash mode, and flashmatic is read from DX information. The DX information is displayed for each zone, and the aperture value can be flagsmatically controlled in accordance with the displayed information. In this test, the counter and feed display are cleared and the S LED is set to 0, and charging is performed using the CHGSub routine. In addition, the TEST3 information is transferred in the non-emission mode, the AF zone information is displayed with the first Lurie switch S1, and the second release switch S2 drives the lens and extends it to the AF information, which causes the shooting lens to move. You can know the drive stroke.

TEST4 information is transferred in the self-timer mode, and a test is performed to see if the shutter is open using the Lullies switch S1.

These mode tests can be canceled with the mode switch.

Furthermore, when the flag Φ5TT=1 in the 5UBCPU 202, the sequence of symbol C is entered, the transfer segment is evacuated, all segments are blinked for a predetermined period of time, and returned to lighting, and when 51=0 is determined, the No. 1 Lurie's switch S1 is activated. Wait until then and exit.

Also, in the above operation sequence, the sequence starting from symbol 1 turns off the power hold at PH←0, waits for 200m5, and ends at 51=0 and MODE=O1Scn=0.5cu=0. In addition, the sequence from symbol E is entered due to battery abnormality, etc., and flag ΦBC- is entered to protect the battery.
00, turn off the battery, and turn off the power hold in the same way as above.

Shadow Lens Flowchart FIGS. 13 and 14 are flowcharts for switching to the initial mode in conjunction with returning to the initial position due to an abnormality in the photographic lens extension operation, or retracting from an undefined position.

Use the 5th Lurie's switch to determine whether autoloading is in progress, whether the back cover is not open even after rewinding is complete, or whether a shutter abnormality has occurred. If none of these conditions occur, set the pH to 1. , the power is held, a battery check is performed, the DX code is read, and the data is transferred (steps 1 to 4).

The battery level is checked based on the battery information, and if the battery level is below a predetermined value, a battery warning is issued, power hold is turned off, and the process ends (steps 5 to 7).
. If the remaining battery power exceeds a predetermined value, the remaining battery power is displayed and the lens barrel position is determined (step 5,
8. ).

When the lens barrel 51 is at an undetermined position other than the collapsing stop position, the initial position for normal photography, or the initial position for close-up photography, a timer is set to limit the collapsing operation time, and the PHM is set to 1.
Hold the large current power supply ■b' power supply, and turn the lens barrel 51
When the lens barrel 51 starts collapsing (steps 10 to 12), it is determined whether the lens barrel 51 has reached the collapsing stop position based on whether the lens position signal SEP becomes 1, and if the lens barrel 51 is not at the collapsing stop position even after a predetermined period of time has elapsed. is ■b'P which holds the power supply
HM is set to 0, power hold is released, and the process ends (steps 13 to 15.7). When the lens barrel 51 reaches the collapsing stop position, a pulse counter is set to set the number of pulses, and the pulsed lens drive signal AFC from the photocoupler 173 reaches AFC=1 within a predetermined time.
or AFC=O within a predetermined time.
When FC=1 and AFC=O, the pulse counter counts down (steps 16 to 24). Then, if the number of pulses reaches a predetermined number, or in step 22
Or, if the timer exceeds at 24, stop the collapsing operation, initialize the shutter blades, release the Vb' power hold, set the flag ΦSEP to 01 (steps 25 to 27-1), and judge whether to stop during rewinding. Step 28 of
Hejiambu. If the lens barrel 51 is at the collapsing stop position, the flag ΦSEP is set to OO, and then a determination is made to stop during rewinding in step 28. If the lens barrel 51 is at the initial position for normal photography or close-up photography, the flag ΦSEP is set to OO. 1
After setting the value to 1, a determination is made to stop the rewinding in step 28.

In step 28, it is checked whether rewinding has been stopped midway, and if it has been stopped, rewinding is performed (step 29). When rewinding is complete, check whether the back cover is open or closed. If it is closed, check to see if the film counter display is zero or greater than zero (step 30.31). If it is zero, the loaded film is DX. It is checked whether it is a film or not, and if it is a DX film, it is autoloaded (steps 32 and 33).

If the back cover is open, the film counter exceeds zero, or the film counter is zero and the loaded film is not a DX film, the flag ΦSE is set.
The lens barrel position information is checked using P (step 34), and if the flag Φ5EP=OO, the power hold is released and the process ends (step 35).

If the flag Φ5EP=01, a predetermined initial mode is set and displayed, power hold is turned off, and the process ends (step 36.7).

When the flag Φ5EP=11, the first Lurie's switch S
1 is ON or OFF (step 37), and if it is OFF, the strobe capacitor 7 is charged (step 38).

If it is ON, it is determined whether the test mode is specified, and if the test mode is specified, a camera test is performed (step 39.40), and if the test mode is not specified, photometry, Distance measurement for normal photography or close-up photography is performed, and display in the finder is performed based on this information (steps 41 to 43).

Next, it is determined whether the second release switch S2 is ON or not, and if it is not ON, the second release switch S1 is
is OFF, the strobe capacitor 7 is charged (steps 44 to 46), and the Lullies switch S1 is turned ON.
Then, the second release switch S2 is turned ON or OFF again.
Determine whether it is F. If the second release switch S2 is ON, the viewfinder display is turned off and the self-timer mode is entered, the process moves to a self-subroutine that activates the self-timer (steps 47 to 49).
. If it is not the self-timer mode, a date light emission signal is output, the large current Vb' power source is held, and an AF counter is set based on the calculation of the MAIN CPU 201 based on the distance measurement result (steps 50 to 52). and,
The AF lens drive to advance the photographing lens 50 to the in-focus position is started, a timer is set to limit the lens advance time, and the lens barrel 51 is moved to a predetermined position by the normal photographing AF trigger signal 5ANT or the close-up photographing AF trigger signal 5CAT. In steps 53 to 56), it is determined whether or not the feeding amount count base point Y3 for normal photography or the feeding amount counting base point Y5 for close-up photography has been reached within the specified time. If the AF lens drive does not reach the reference point for quantity counting, the process jumps to step 57 and performs the same collapsing operation as described above.

However, after the collapsing is stopped, (b) the hold on the power source is released, the power hold is released, and the process ends.

In step 55, the lens barrel 51 reaches one of the above-mentioned feeding amount count base points, and the AF trigger signal 5NAT or 5
When CAT is output and the value of the set AF counter is greater than zero, a timer is set to limit the lens barrel extension time, and if the lens drive signal AFC does not become 1 within a predetermined time, the timer is set. AF lens drive abnormality occurs in step 57 and step 73~
75), perform the same barrel collapsing operation as above. Also, if AFC reaches 1 within a predetermined time, the timer that limits the lens barrel extension time is set again, and if AFC does not reach O within a predetermined time, it is assumed that the AF lens drive is abnormal and the step 57 jumps. Steps 76 to 78), and if the AFC becomes 0 within a predetermined time, the AF counter is counted down (Step 79). Steps 73 or 680 are repeated until the AF counter becomes zero (step 80).

If the AF counter reaches zero, or step 52
If the AF counter is set to zero, the motor 170 is switched to constant speed operation by the governor (step 81), a pulse counter is set to set a predetermined number of pulses, and a timer is set to limit the lens barrel extension time. set,
If the lens drive signal AFC does not become 1 within the predetermined time, it is assumed that the AF lens drive is abnormal and the process jumps to step 57 (Steps 82 to 85). If the AFC becomes 1 within the predetermined time, the lens barrel is extended. If the timer that limits the time is set again and the AFC does not become 0 within the predetermined time, it is determined that the AF lens drive is abnormal and jumps to Step 57 (Steps 86 to 88); if the AFC becomes 0 within the predetermined time counts down the pulse counter set to a predetermined number of pulses (step 8).
9.90). Such steps 83 or 69 continue until the pulse counter reaches zero (step 9o).
0 is repeated, and when the pulse counter reaches zero, A
Stop the F lens drive (step 91). Thereafter, it is confirmed that the lens drive signal AFC has stopped, the shutter is driven, the photographing lens 50 is moved backward, and when the initial position for normal photography or close-up photography is reached, the film is wound (steps 92 to 95). Then, charge the strobe capacitor 7, release the bold of the vb' power supply,
Release power hold and exit (step 96.9)
7).

Photographing Lens Flowchart FIG. 17 is an operation flowchart when the photographing lens is driven by operating the main switch button 4, and FIG. 18 is a storage time chart of the photographing lens.

Main switch 5 by operating main switch button 4
Power is held on WON, a battery check is performed, DX code is read, and data is transferred (steps 1 to 4). Then, a battery check is performed based on the battery information, and if the remaining battery level is less than a predetermined value, a battery warning is issued, the power hold is released, and the process ends (steps 5 to 7). If the remaining battery level exceeds a predetermined value, the remaining battery capacity is displayed and the lens barrel 51
6. Set a timer to limit the operation time, output the hold signal PHM of the large current power supply vb', and judge the lens barrel position based on the value of the lens position signal SEP (
Steps 8-11).

When 5EP=1 and the mirror 1j151 is at the collapsing stop position, the lens barrel 51 is advanced, and if the lens barrel 51 reaches the initial position for normal photography and the timer expires before the lens position signal SNP becomes 1, Vd' power hold and power hold are set to 0FFL/ to end. When the lens position signal SNP becomes 1 within a predetermined time, a counter is set to set the number of pulses, and a timer is further set to limit the pulse count time (steps 15 and 16). Then, from the output of the pulsed lens drive signal AFC from the photocoupler, AFC=1 and AFC=O
is determined, the number of pulses is counted, and when the set number of pulses is reached (steps 17 to 23), feeding is stopped (step 24). Next, ■b' power hold is set to 0FFL, and the main capacitor of the strobe is charged (step 25.
26), power off and exit.

Similarly, if AFC=1 or AFC=O is not achieved within a predetermined time, feeding is also stopped.

Then, ■ b' Turn off the power hold, charge the main capacitor of the strobe, and turn off the power.

On the other hand, in step 11, when the lens barrel 51 is at a position other than the collapsing stop position of 5EP=1, collapsing of the lens barrel 51 is started, the lens barrel 51 reaches the initial collapsing position, and the lens position signal SEP Move the photographing lens until becomes 1. If the lens position signal SEP does not become 1 within a predetermined time, the Vb' power supply hold and the power hold are turned off and the process ends. When the lens position signal SEP becomes 1 within a predetermined time (steps 27 to 29), a counter for setting the number of pulses is set, a timer is further set for limiting the pulse count time, and from the output of the lens drive signal AFC, Determine whether AFC≠1 or AFC=O, count the number of pulses, and when the specified number of pulses is reached (steps 30 to 38), perform high-speed reverse rotation as shown in Fig. 17, then apply the brake and cut off the power. The collapsing is stopped, (b) the power hold is set to 0FFL/, a predetermined initial mode is set and displayed, the power hold is turned off, and the process ends (steps 39 to 41).

If AFC does not become 1 within the predetermined time, stop collapsing and turn off vb' power hold in the same way.
A predetermined initial mode is set and displayed, power hold is released, and the process ends.

In the camera of the present invention, when operations necessary for photographing are performed, the photographing range 50 moves according to the flowchart described above. Shooting operations when the camera is operating normally are as follows:
It is done as follows.

When the camera is carried and the lens barrel 51 is at the retracting stop position, operating the main switch button 4 turns the main switch ON, and the lens barrel 51 is extended according to the flowchart in FIG. 17, returning to the initial position for normal shooting. Stop.

If the subject is close and close-up photography is required, press the close-up button to switch to the close-up switch S.
W is turned ON, and the lens barrel 51 is extended to the initial position for close-up photography without determining whether the lens position switch SW is ON or OFF in the same manner as steps 12 to 24 in FIG. 17, although not explained here. Stop at. When the lens barrel 51 has stopped at the initial position for normal photography or close-up photography, operate the release button 2 to turn on the second release switch S2 and the second release switch S2, and the process will follow the flowcharts shown in FIGS. 13 and 14. , the lens barrel 51 is extended by the required extension amount calculated based on the distance measurement results,
It stops at the in-focus position, the shutter 54 opens and closes, and the lens barrel 51
moves back to any initial position where it was stopped before the release button 2 was operated, and winds the film by one frame. Lens barrel 5
According to the flowchart of FIG. 17, if an abnormality occurs during the movement of the lens barrel 170 from the collapsing stop position to the initial position for normal photography or close-up photography, the power to the motor 170 is cut off and the lens barrel 51 remains at that position. Stop. This allows the user to recognize that an abnormality in the extension has occurred, but even if the user operates the release button 2 without realizing it, the lens barrel 51 will retreat to the collapsing stop position according to the flowchart in FIG. Therefore, it can be recognized that the normal photographing operation has not been performed.

If an abnormality in extension occurs during the AF lens drive process shown in FIG. 14 in which the lens barrel 51 is extended from the initial position for normal photography or close-up photography to the focusing position, and the AF lens drive becomes abnormal, the lens barrel 51 will stop collapsing. Since it retreats to the position, the user can recognize the occurrence of an abnormality.

That is, in any case, if a feeding abnormality occurs during the feeding operation of the lens barrel 51, the driving means is protected and the lens barrel 51 is
1 behaves differently from normal operation, the user can easily recognize the occurrence of an abnormality.

Furthermore, if the user wants to try taking a picture again, he or she only has to perform the same operations as when the camera is in a portable state, and no special operations are required.

[Effects of the Invention] As described above, the present invention includes a driving means for moving a photographing lens from an initial position to a predetermined position, a detecting means for detecting that the photographing lens stops for a predetermined period of time during movement, and this detecting means. and a control means for operating the driving means to return the photographing lens to its initial position in response to a signal from the camera, so that when it is detected that the photographing lens has stopped for a predetermined period of time during movement, the driving means is actuated by this detection signal. , the photographing lens can be returned to its initial position.

In this way, when the photographic lens stops operating abnormally, it returns to the initial position from the position where it stopped abnormally without performing any other operations, allowing the user to detect the abnormality and not only require special operations. It is not necessary to perform re-shooting operation with normal operations.

[Brief explanation of the drawing]

1 to 6 show a camera to which the present invention is applied. FIG. 1 is a front view of the camera, FIG. 2 is a rear view of the camera, FIG. 3 is a plan view, and FIG. ■-■ sectional view, Fig. 5 shows the viewfinder display, Fig. 6 shows the back cover display, and Figs. 7 to 10 show the operating mechanism of the lens barrel.
Fig. 7 is a sectional view of the lens barrel, Fig. 8 is a sectional view taken along ■-■ in Fig. 7, Fig. 9 is a sectional view taken along IX-IX in Fig. 7, and Fig. 10 is a sectional view taken along line X-x in Fig. 8. 11 is a schematic circuit block diagram of a camera to which this invention is applied, FIG. 12 is an operation sequence of the circuit block of this invention, and FIGS. 13 and 14 are initial positions due to an abnormality in the photographing lens extension operation. A flowchart for switching to the initial mode in conjunction with recovery and storage from an undefined position. Figure 15 is a time chart for detecting an abnormality in the movement of the photographing lens until just before the AF lens is driven.
Fig. 16 is an abnormality detection time chart of the taking lens extension operation after AF lens drive, Fig. 17 is an operation flowchart when the taking lens is moved by operating the main switch button 4, and Fig. 18 is the retracting time of the taking lens. It is a chart. In the figure, 10 is the main body, 22 is a mirror frame, 50 is a photographic lens,
51 is the lens barrel, 170 is the motor, 201 is the MAIN CPU
, 202 is a 5UBCPU, 210 is a lens motor driver, and 173 is a photointerrack. Figure Figure Figure Figure Figure 10 CL SQL DR DL DR HM 4-m=■-→-・S 退地) Song 4 Mountain Rikoni J 10--1 HD C x1 DX2 -/4 sl rc clock 8sun-m=, : 4AFC=l(High)aijsels, IO+3)
mstrJru. AFLD$S

Claims (1)

[Claims] In a camera that performs photography by moving a photographic lens from an initial position to a predetermined position, a driving means for moving the photographic lens from the initial position to a predetermined position, and a detection unit that detects that the photographic lens has stopped for a predetermined period of time during movement. and control means for operating the drive means in response to a signal from the detection means to return the photographing lens to its initial position.