JPH05210148A - Film unit with lens - Google Patents

Abstract

PURPOSE:To execute excellent photographing with a stroboscope while keeping a unit compact by allowing the light emission part of the built-in stroboscope to condense light in an up-and-down direction and narrowing the up-and-down direction of the front surface of the light emission part. CONSTITUTION:The shape of the reflector SB of the light emission part is narrowed in the up-and-down direction so that the light in the up-and-down direction may be condensed, and the up-and-down dimension of a light emission panel SP on the front surface of the light emission part is narrowed so as to suit to the angle of view, thereby improving light distribution characteristic. Furthermore, two sets of stroboscopic light emission parts SP1 and SP2 are provided at a lateral position on the front surface of a camera, and set at such an angle that the central optical axes YY(ST1) and YY(ST2) of the light emission parts SP1 and SP2 are open with respect to the shortage of a light quantity in the diagonal or long-piece corner parts of a picture. By thus doing, the illuminance of the stroboscope at 2.5m ahead of the camera having the highest frequency of photographing in a panoramic size is prevented from lowering in the corner parts of the picture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens, which has an exposure function and a film winding function, and which has a strobe built-in so that a pre-loaded unexposed film can be immediately photographed.

[0002]

2. Description of the Related Art A film unit with a lens is a so-called film-integrated camera having a function of taking a picture, which is also called a "shooting-only camera". Since it is used only for film shooting and the camera body is discarded after taking out the exposed film, it is manufactured at a low cost with a simple structure.

Therefore, these lens-fitted film units are aimed at low cost, and unlike ordinary cameras, the drive system, optical system, and electrical system are greatly simplified, so that the development finish and print quality are unsatisfactory. There are many points that need improvement.

Although the camera is often purchased and used on the go, such as when traveling, it is hard to say that it is convenient to carry, and it has a photographing lens of f = 35 mm and an outer shape of 110 mm × 60 m.
It was about mx 35 mm, and I couldn't get it into the chest of my shirt, which was inconvenient.

[0005]

The film unit with a lens is generally designed to have a large aperture value and a simple lens with a fixed focus to deepen the depth of field and focus on a wide range, but the sensitivity is insufficient. Therefore, a film having an ISO sensitivity of 320 or more is generally used. However, in nighttime or indoor shooting scenes, a shortage of light amount is recognized even if the built-in flash is used for flash photography.

The present invention provides a lens-equipped film unit for taking a picture with a normal angle of view or a panoramic picture-taking, and provides a film unit with a lens capable of performing good stroboscopic photography while maintaining the compactness of the camera. The purpose is to

[0007]

The above-mentioned objects are fixed focus,
In a film unit with a lens, which has a fixed aperture and a built-in strobe and is preloaded with an unexposed film ready for shooting, in a film unit with a built-in strobe, the light emitting unit of the built-in strobe collects light in the vertical direction, and the front face of the light emitting unit A film unit with a lens, which is configured to sandwich the vertical direction of the lens, and a lens with a fixed focus, a fixed aperture, and a built-in flash for performing panoramic photography in which an unexposed film is loaded in a ready-to-shoot state. In the film unit, the light emitting part of the built-in strobe is a two-lamp type light emitting part arranged in a lateral position, and the film unit with a lens is achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an external view of a film unit with a lens (hereinafter also referred to as the present camera) of the present invention, that is, a film-integrated camera, which is sold with a 35 mm film (J135) preloaded. After filming, the film is sent to the maker without removing it from the camera, and the film is developed and printed.

The unexposed film used in this camera is a film of ISO sensitivity 400, which is loaded in a cartridge and is set in a light-tight state. Is driven to wind all the film in the cartridge into the film winding chamber. The user winds the film every time the photograph is taken, so that the photographed film is wound in the patrone. Therefore, on the maker side, the film that has already been taken can be taken out from the camera as a patrone in a bright room.

Further, it is possible to easily take out the photographed film by bending a part of the back cover. Therefore, if the back cover is exchanged, a new unexposed film is loaded and used as a reuse camera. You can also do it.

As a cartridge loaded in the camera, a cartridge having an outer diameter of φ20.6 mm, which is different from a cartridge (JISK7528) which is generally used, is used.

As a result, the thickness of the camera can be suppressed to about 24 mm except for the lens barrel portion having the taking lens, and an ultra-thin compact camera is realized.

The camera is provided with a cardboard carton on which a product name, a simple usage method and the like are displayed, on a part of its outer surface.

FIG. 2 is a development view showing the structure of the camera.

Reference numerals 10, 20 and 30 denote a camera body, a front cover and a back lid, which are the main components of the camera, and 40 denotes a built-in strobe unit and 50 and 60.
Reference numerals 70 and 70 are film winding, sector charge and film counter mechanisms, respectively.

When the camera body 10 is used alone, each member constituting the film winding mechanism 50, the sector charge mechanism 60, and the film counter mechanism 70 is mounted, and the shutter case 11 for housing the sector is mounted.

The shutter case 11 is fixed by engaging claws 11A projecting on both sides with a locking portion 10A on the front surface of the camera body 10, and links the sector to the sector charge mechanism 60.

Further, on the front surface of the shutter case 11, a photographing lens 12 which is a single lens having a focal length f = 30 mm and a fixed aperture of F9.5 is dropped, and is slidably engaged with a guide pin 11B. Covered by a lens retainer 13 with 13A.

The camera body 10 and the shutter case 11 described above
Is made of a black matte plastic material having some elasticity, including the front cover 20 and the back cover 30 described above.

On the other hand, the strobe unit 40 is mounted and supported on the basis of holes 40A and 40B on the substrate which engage with the guide pins 10B and 10C on the front surface of the camera body 10, respectively.

The strobe unit 40 is integrated with the upper and lower battery sections 41 through the upper and lower slit holes 10D of the camera body 10 to project into the battery chamber on the back of the camera body 10 to hold the battery E as a strobe charging power source. To do.

The integrated main capacitor C is stored in a capacitor chamber formed under the shutter case 11.

The lens retainer 13 and the strobe unit 40 described above
The fixing and integration of the above with the camera body 10 is completed by mounting the front cover 20 on the camera body 10.

Prior to mounting the front cover 20 on the camera body 10, an objective lens 21 of a finder is dropped in front of the front cover 20 and is fixed by engaging a decorative cover 22. The makeup cover 22 has a guide pin 22A and four nails 22B on the back.
The front cover 20 and the holes 20A and 4 on the front of the front cover 20, respectively.
It is attached by engaging with the locking portion 20B at the location.

The front cover 20 is mounted on the front surface of the camera body 10 after the eyepiece lens 23 of the finder is engaged and mounted on the rear surface.

The front cover 20 is provided with a hole 20C, a claw 20D, and three engaging portions 20E on the back surface, and the front cover 20 has a guide pin 10E, a nail 10F and a side engaging portion 10G on the front of the camera body 10. It is fitted and attached.

By engaging and mounting the front cover 20 on the camera body 10, the lens retainer 13 and the strobe unit 40 are fixed to the camera body 10.

The camera body 10 with the front cover 20 attached
In the cartridge chamber 15A and the scroll chamber (film winding chamber) 15B formed on the back surface of the cartridge, the cartridge P1 and the spool S2 in which the leading ends of the unexposed film F are locked are loaded, respectively.

The other end of the film F is locked to the spool S1 in the cartridge P1. Even if the film in the cartridge is wound up by the spool S2 after the film is loaded, the other end is locked to the spool S1. Therefore, it can be rolled up in the Patrone P1 every time the shooting is completed.

A back cover 30 is attached to the back surface of the camera body 10 in which the film F is loaded so that the film F is protected from light and the focus surface position is restricted.

The back cover 30 is provided with claws 30A and 30B on the front surface thereof and locking holes 30C and 30D on the side surfaces thereof.
Claws 30A and 30B are engaged with the camera body 10 when mounted on the camera.
On the 10H and 10J, the one holes 30C and 30D are the nails 10 of the camera body 10.
It is fixed by engaging K and 10L.

After the back cover 30 is mounted, a predetermined film winding operation is performed to set a photographable screen, and the carton shown in FIG. 1 is mounted to complete the process.

Next, details of the film winding mechanism 50, the sector charge mechanism 60, and the film counter mechanism 70 will be described.

FIGS. 3 and 4 show the above-mentioned respective mechanical parts at an angle when viewed from the rear side of the camera.

The camera body 10 has a cartridge chamber 15 as two accommodating chambers for film winding and film loading in the same plane on both sides of the screen frame 16 which is the exposure unit.
A and a scroll chamber 15B are provided, and J135 caught in the cartridge P1 which is the storage container shown in FIG.
The film F is loaded.

The film F used in this camera of this embodiment is a roll film J135 or a slightly thin roll film having a thickness of 130 to 140 μm, which is used as a general camera. The end portion is fixed to S1 and the film is wound up for a predetermined number of frames so that the film can be photographed, and a film of a certain length has come out from the film outlet of the cartridge P1. The film in this state will be loaded into the camera. The loading method will be described below.

The cartridge P1 is loaded in the cartridge chamber 15A so that the spool S1 of the cartridge P1 is engaged with the fork 52 of the hoisting fork 52. On the other hand, the spool S2 is also inserted in the scroll chamber 15B. Then, the tip of the film notcher FN of the film F is located at the lower portion of the lower rail surface, which is an index 17.
The film F is pulled out until it fits A, the tip of the film F is inserted into the slit SL of the spool S2, and the perforation P of the film F is hooked on the nail H.

Next, the back cover 30 is covered and the cover is made light-tight.
Then, this camera in this state is attached to the film winding device, and the entire film F (with the other end not separated from the spool S1 of the cartridge P1) is moved to the scroll chamber 15B.
The film is loaded by winding the film on the spool S2. That is, by loading the film F in this way, the film F is sequentially wound into the patrone P1 for each shooting, and when two films are fed in advance after the shooting of a predetermined number of films is completed, The photographed film is wound into the cartridge P1 while leaving the required length without the leading end being wound into the cartridge. Therefore, this cartridge can be taken out from this camera in a bright room.

Next, the mechanism of the main body will be described.

In the camera body 10, a film winding mechanism 50 including a photographing lens 12, a sector charge mechanism 60,
The main mechanism of the film counter mechanism 70 is incorporated therein.

First, the film winding mechanism and the sector charge mechanism will be described.

Reference numeral 51 denotes a film winding knob, and the film F loaded as described above is wound up by rotating the film winding knob 51 counterclockwise. A cam 55 coaxial with an eight-toothed sprocket gear 54 meshing with the perforation P of the film F and having a fan-shaped cam portion 55B at the bottom.
Is designed to rotate exactly once counterclockwise by winding the film.

That is, the film is wound up with one per piece having a length of eight perforations, which is the number of teeth of the sprocket gear, and the piece size is a so-called full size piece size of 24 × 36 mm.

By the counterclockwise rotation of the cam 55, the fan-shaped cam portion 55B naturally rotates counterclockwise as described above, and in the process, the fan-shaped cam portion 55B moves the charge lever 61 and the charge lever shaft 63. Is rotated clockwise against the spring force of the charge lever spring 64 that urges the charge lever 61 in the counterclockwise direction, and the triangular ketobashi 61C provided on the charge lever 61 causes the rising portion 65B of the sector lever 65 to rise.
Is pressed, and the rising portion 65B is eventually overcome to charge the sector charge mechanism as shown in the figure.

The pin 65C of the sector lever 65 and the camera body 10
A sector spring 67 is stretched between the pins 18C provided at the sector lever 67, and the tensile force of the sector spring 67 causes the sector lever 65 to move.
The left end of the elongated hole is brought into contact with a pin 18B provided on the camera body 10 that guides the elongated hole of the camera in a slidable and rotatable manner, and the sector lever
Pin 18 provided on camera body 10 with arm plate 65D provided on 65
It comes in contact with E. Further, a sector drive pin 65A for actuating the sector 66 pivotally supported by the sector pin 18D provided on the camera body 10 is inserted in the forked portion of the sector 66.

As will be described later, the cam stopper after shooting is completed.
The projecting portion 62D of 62 is removed from the groove portion 55A of the cam 55,
The arm portion 57A of the hoisting stopper 57 changes from the state shown in the drawing to change the arm portion 61A of the charge lever 61 and the arm portion of the cam stopper 62.
The arm 62A is in contact with the end surface of the arm portion 61A by the spring force of the hoisting stopper spring 58 which is displaced from each edge of the arm 62A and urges clockwise. When the cam 55 rotates exactly once as described above by the film winding and the groove 55A of the cam 55 returns to the initial position, the spring force that biases the cam stopper 62 in the clockwise direction by the horizontal end portion of the charge lever spring 64. As a result, the protrusion 62D of the cam stopper 62 jumps into the groove 55A. By this jumping operation, the lock of the arm portion 57A of the hoisting stopper 57, which was locked at the end surface of the arm portion 62A of the cam stopper 62 at this time, is released.

The outer peripheral cylindrical surface of the film winding knob 51 is a ratchet gear, and the V-shaped projection at the tip of the winding stopper 57 is released by the release of the lock, and the ratchet force of the winding stopper spring 58 causes the ratchet to rotate. It jumps into the tooth groove of the gear 51A and prevents the film winding knob 51 from rotating in the counterclockwise direction. That is, when the film winding is completed, the film winding knob 51 is prevented from further winding rotation.

Further, in the camera body 10, the tip of the reverse rotation preventing claw 53 utilizing the elasticity of the resin material is pressed against the ratchet gear 51A so as to prevent the film winding knob 51 from rotating in the opposite winding direction. It has become.

By pressing the release button 25 of the front cover 20, the release button pin 25A is planted on the back surface of the release button 25.
Operates in the direction of arrow A. That is, the front cover 20
When attached to the camera body 10, the winding knob
51 By the operation of the tip of the release button pin 25A in the direction of arrow A described above, the hoisting stopper 57 rotates counterclockwise against the spring force of the hoisting stopper spring 58. Then, from the end surface of the arm portion 57A of the hoisting stopper 57, the arm portion of the charge lever 61
The edge of 61A is disengaged, and the charge lever 61, and thus the cam stopper 62, is rotated counterclockwise by the spring force of the charge lever spring 64.

By rotating the charge lever 61 counterclockwise, the ketobashi 61C of the charge lever 61 is
The sector lever 65 is tapped on the rising portion 65B and then separated from the rising portion 65B. Therefore, the sector lever 65 rotates clockwise around the pin 18B in the long groove of the sector lever against the tensile force of the sector spring 67, and then returns to the original state by the tensile force of the sector spring 67. Therefore, the sector drive pin 65A rotates the sector 66 around the sector pin 18D to expose the film and then closes it. The shutter speed T performed by opening and closing the sector 66 is 1/100 sec in this embodiment.
Is set to. When the flash is switched, the flash is emitted at the time when the shutter is fully opened.

On the other hand, the cam stopper 62 also rotates counterclockwise together with the charge lever 61 as described above,
The protruding portion 62D of 62 is removed from the groove portion 55A of the cam 55. Therefore, even if you stop pressing the release button, the winding stopper
The arm portion 57A of 57 is biased in the clockwise direction by the spring force of the hoisting stopper spring 58, but the arm portion 61A of the charge lever 61.
Is stopped by the end face of the
The shaped protrusion does not lock the ratchet gear 51A of the winding knob 51. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

As described above, 72 meshes with the V groove 56A provided at the upper end of the cam shaft 56 planted in the cam 55 which rotates integrally with the sprocket gear 54, and one frame of film is wound up to form a cam shaft. It is an exponential gear that rotates clockwise one tooth each time 56 rotates once.

An index plate 71 is printed on the upper surface of the index wheel gear 72 as an integrally molded product, and the number of remaining photographable films is displayed through the film counter window 26 on the upper surface of the front cover 20.

A projecting portion 72A is provided on the lower surface of the exponential gear 72, and the projecting portion 72A is projected by the next film winding after the photographing of a predetermined number of frames is completed.
It is designed to be inserted between the E and another protruding portion 62E of the cam stopper 62 so as to enter. Then, the projecting portion 72A is replaced by the two projecting portions 61.
By entering between E and 62E, the film is wound up by one frame, and even if the cam 55 makes one rotation and the charging of the sector is completed, both the projecting portions 61E and 62E become the projecting portion 72A of the exponential gear 72. As the movement is blocked, the charge lever 61 cannot operate and the protruding portion 62D of the cam stopper 62 is also in the groove portion of the cam 55.
You will not be able to jump into 55A. The arm portion 57A of the hoisting stopper 57 contacts the end surface of the arm portion 62A of the cam stopper 62 by the spring force of the hoisting stopper spring 58, and the V-shaped projection at the tip of the hoisting stopper 57 locks the ratchet gear 51A. It is also not possible to operate the charge lever 61 to open or close the sector to expose the film.

In this way, when two frames of film are unwound, the index plate gear 72 rotates by two teeth, and this rotation causes the protruding portion 72A of the index plate gear 72 to move beyond the protruding portion 61E. The charge lever 61 is pressed to prevent the charge lever 61 from moving, but is separated from the protruding portion 62E of the cam stopper 62. Therefore, the protruding portion 62D is a groove portion of the cam 55.
The film jumps to 55A, and the winding stopper 57 is disengaged, so that the winding knob 51 is locked by the winding stopper 57 and the film cannot be wound. And as mentioned above, the charge lever
Since the movement of 61 is blocked, the film cannot be exposed. In this way, the leading edge of the film is prevented from being caught in the cartridge.

FIG. 5 is a circuit diagram of the built-in strobe of this embodiment.

In the figure, SW1 is a switch for flash photography, and when the SW1 switch is turned on, the voltage of the power source E is boosted by the transformer _Tr and charged in the main capacitor C. SW2 is a trigger switch that is turned on when the sector 66 is fully opened, and the amount of electricity charged in the main capacitor C instantaneously flows to the arc tube SL to emit strobe light. Here, a high withstand voltage chemical capacitor or paper capacitor is often used as the main capacitor C, and the conventional circular cross-sectional shape of the capacitor is used. However, the main capacitor C of this embodiment is used.
As shown in FIG. 6, a rectangular (a) or elliptical (b) cross-sectional shape is used. By making the cross-sectional shape of the condenser square or elliptical, the space inside the camera can be effectively used even in the extremely small lens-equipped film unit as in this embodiment, and the unit can be used for the same space. It becomes possible to incorporate a large-capacity capacitor by reducing the internal gap.

In this embodiment, the case where one capacitor is used as the main capacitor has been shown, but it may be divided into a plurality of spaces depending on the arrangement in the camera so that a plurality of capacitances C ₁ and C ₂ may be obtained. By connecting them in parallel as the condenser of _{No. 1} , it is possible to obtain the amount of emitted light equivalent to that of the condenser having the capacitance of C ₁ + C ₂ and increase the strobe guide number G _NO . It is desirable to set the guide number G _NO to 11 or more.

Further, the amount of strobe light can be increased by setting the withstand voltage of the main capacitor C to 330 V or higher and the charging voltage to a high voltage. In order to shorten the charging time required for stroboscopic photography, a rechargeable battery such as a Ni-Cd battery, which has a small internal resistance and allows a large current to flow, is used as the power source E, and the transformer _Tr efficiently supplies a current of 2 A or more. It is desirable to increase the diameter of the winding so as to boost the voltage. It is possible to improve the guide number G _NO by improving the current flow and reducing the loss current of the condenser, the transformer and the like.

In the above, the embodiment in which the guide number G _NO is improved by effectively utilizing the space inside the small film unit with a lens so that the proper stroboscopic photography can be performed at night or indoors has been described. However, for a panoramic film unit with a lens, it is desirable that the built-in flash also has a light emitting part with a light distribution characteristic corresponding to this because the screen size is narrow in the vertical direction and wide in the horizontal direction. Was not given any particular consideration.

FIG. 7 is a vertical and horizontal sectional view of the light emitting portion of the film unit with a panoramic lens and its light distribution characteristics. FIG. 7A shows an embodiment of the present invention.
(B) shows a cross-sectional view of the light emitting portion for a 24 × 36 mm full-size screen in comparison. In the figure, SL is a rod of xenon in the shape of a horizontal rod, SB is a reflector having a high reflectance on the inner surface such as illuminite, and SP is a transparent resin such as acrylic that covers the front surface of the reflector SB. It is a light emitting panel. In the embodiment shown in FIG. 7A, the shape of the reflector SB is narrowed in the vertical direction to collect light in the vertical direction, and the vertical dimension of the light emitting panel SP on the front surface of the light emitting unit is narrowed according to the angle of view. In this case, the light distribution characteristic is significantly improved, and good stroboscopic photography results can be obtained for panoramic size photography.

According to the embodiment shown in FIG. 7A, a great improvement in panorama size stroboscopic photography was recognized. However, a shortage of light amount was found in the diagonal or long side screen corners. As for the angle of view of the panorama size, the short side in the vertical direction is extremely narrower than the diagonal and long sides.
Also, due to the performance of the lens, COS ⁴ around the periphery compared to the center
It dims according to the θ law. Also, the light distribution characteristics of the strobe are dimmed in the surrounding area compared to the center area. Therefore, in the panorama, the image is significantly under-viewed at the diagonal and long side edges of the screen.

FIG. 8 shows a lens-fitted film unit which solves the above-mentioned problems. As shown in FIG. 8A, two sets of stroboscopic light emitting portions are provided in the horizontal position on the front surface of the camera.
In addition, as shown in FIG. 8B, the two sets of strobe light emitting portions are installed at such angles that the central optical axes YY (ST1) and YY (ST2) are opened. By doing so, the stroboscopic illuminance at 2.5 m in front of the panoramic size camera with the highest shooting frequency was prevented from being drastically reduced even in the corners of the screen, and good panoramic size stroboscopic photography was achieved.

[0065]

According to the present invention, a good photographing result can be obtained even by stroboscopic photography using a lens-equipped film unit with a built-in strobe, which has only been able to obtain conventional underexposure photographing results. Further, in the panoramic size film unit with a small lens, by using the light emitting portion shown in FIG. 7A or 8, a good photographic image can be obtained over the entire screen.

[Brief description of drawings]

FIG. 1 is an external perspective view of a film unit with a lens of the present invention.

FIG. 2 is an exploded perspective view showing a configuration of the unit.

FIG. 3 is a developed perspective view showing a film winding mechanism and the like of the unit.

FIG. 4 is an explanatory diagram of a film unit loaded in the unit.

FIG. 5 shows an example of a strobe circuit used in the present invention.

FIG. 6 shows a cross-sectional shape of a main capacitor according to an embodiment of the present invention.

7A and 7B are views showing a stroboscopic light emitting portion for a panorama size, FIG. 7A showing one according to an embodiment of the present invention, and FIG. 7B showing a conventional example.

8A and 8B show an embodiment of a film unit with lens for panorama size according to the present invention, wherein FIG. 8A is a front view of a camera and FIG. 8B is a stroboscopic illuminance distribution.

[Explanation of symbols]

 10 Camera body 12 Shooting lens 40 Strobe unit C Main condenser E Power supply SB Reflective umbrella (strobe) SL Light emitting tube (strobe) SP Light emitting panel SW1 switch (for strobe)

Claims (2)

[Claims] 1. A lens-equipped film unit having a fixed focus, a fixed aperture, and a built-in flash for pre-loading an unexposed film in a ready-to-shoot state. A film unit with a lens, which is configured so as to condense light and to sandwich the vertical direction of the front surface of the light emitting unit. 2. In a film unit with a lens, which has a fixed focus, a fixed aperture, and a built-in strobe, and which is preliminarily loaded with an unexposed film in a ready-to-shoot state, a light emitting portion of the built-in strobe is arranged side by side. A film unit with a lens, which is a two-light type light emitting unit arranged.