JPH0946559A - Compound camera - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] In a compound camera device in which a silver salt still camera and a video camera are integrally configured, it is easy to see the images of both the optical viewfinder and the electronic viewfinder, and it is large when only video is used. It provides a means that can be viewed in an image and that will double the image to approximately the same size as the optical viewfinder to facilitate parallax correction. Therefore, an image displayed by a video camera is displayed on an LCD 15 through a half mirror 17 in an optical viewfinder 6 of a still camera 1, and the LCD and its optical system are used as a zoom optical system. It was configured so that it would not be doubled with the subject in the optical viewfinder by moving to. Also, when using only video, I made it possible to view large images in the viewfinder instead of small images.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound camera, and more specifically, a compound camera device in which a still camera for photographing a still image and a video camera for photographing a moving image are integrally constructed or can be constituted. It is about.

[0002]

2. Description of the Related Art Conventionally, there is a desire to shoot with a still camera that records a still image using a silver salt film while recording with a video camera that records a moving image on a recording medium such as a magnetic tape. There is. In order to realize this, various types have been devised in which a video and a still camera are integrally configured. For example, US Pat. No. 35
No. 46378 discloses the equivalent.

However, in this type of compound camera, there is a problem of how to configure the viewfinder of the camera and the video. Therefore, an electronic viewfinder (EVF) and an optical viewfinder are both shown on a coaxial line. For example, in Japanese Patent Publication No. 2-559911, the electronic viewfinder section and the optical viewfinder section are switched by a mirror. Is disclosed. Further, a compound camera of this type having an optical viewfinder is described in, for example, JP-A-63-261330.

[0004]

However, the above-mentioned conventional examples have the following problems. That is, 1) In Japanese Patent Laid-Open No. 63-261330, only an optical viewfinder is provided, so if the video side zoom ratio and the camera side zoom ratio (angle of view) are different, it is possible to know which angle of view is being viewed. Disappear. On the silver salt camera side, it is difficult to make the zoom ratio too large, but on the other hand, video has a small format (CCD area) and tends to have a high magnification. In addition, the video camera has a high magnification for convenience. Is desirable. However, with this finder configuration, if the difference in zoom ratio is too large, only one of them can be dealt with, as described above.

2) On the other hand, US Pat. No. 3,546,378
Unlike the above case, the No. 1 uses a mirror to divide the light that has passed through one lens into the image sensor side and the film side, and also divides the optical path to the viewfinder. The ratio and the angle of view are almost the same, but the lens system must be adjusted to the image circle of the larger format, which makes the lens system quite large. In particular, trying to increase the zoom ratios of the silver salt system and the video system to the same degree causes difficulties in reality.

3) Further, Japanese Patent Publication No. 2-55991 discloses a finder in which both the optical finder and the EVF are shown to the photographer. However, in the structure of this finder, either the optical finder or the EVF is selected because the mirrors are switched. Therefore, since both cannot be viewed at the same time, it is necessary to switch the finder when the other operation is to be performed, which is extremely inferior in quick shooting.

4) Further, in order to solve the above-mentioned drawbacks, in the already filed patent of the present applicant, a compound camera of the type in which a video image is displayed on the LCD through the half mirror in the optical viewfinder, is proposed. , It is also possible to see both the camera and video images, but the LCD image is projected exactly where you want to see with the optical viewfinder, or LC
There was a surface that was difficult to use, such as the size of the D image being small and difficult to see.

The present invention has been made in view of the above situation, and in order to solve the above problems, it is easy to see the images of both the optical viewfinder and the EVF, and when only video is used, a large image is displayed. It is an object of the present invention to provide a means for facilitating parallax (parallax) correction by allowing the image to be viewed and having the same size as that of the optical viewfinder.

[0009]

Therefore, in the present invention, a compound camera of this type is used as a video camera for recording moving image information on a first recording medium and still image information on a second recording medium. In a compound camera that is integrally provided with or can be integrally configured with a still camera for recording, in a part of the optical viewfinder for the still camera, an image being taken by the video camera is displayed on a display unit, The display unit for displaying a video image is movable in parallel with the viewfinder of the still camera via a mirror, and the display unit of the video image is displayed in the viewfinder of the still camera. It is intended to achieve the above-mentioned object by arranging so that it can be moved arbitrarily.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on its embodiments: FIG. 1 is an exploded perspective view of an embodiment of a compound camera embodying the present invention, and FIG. Figure 3 shows a rear perspective view of an example. In both figures, 1 is a single lens reflex type silver salt still camera, 20 is a video camera unit, 3
Reference numeral 0 is an operating member thereof, 40 is a video deck portion, L is a lens unit, and 6 is an eyepiece (finder).

The above embodiments include all means for solving the above problems, and the following actions and effects can be obtained: 1) Lens for each format in order to achieve the smallest size of a compound camera It became a camera that had a system and an angle of view of a dedicated zoom ratio, and 2) the viewfinder could be operated without sacrificing the quick shooting performance by viewing both the optics and the EVF at the same time.

The image of the EVF comes to the eye by using a half mirror in the optical viewfinder. However, since the optical image can be seen with the half mirror, a light shield plate is placed behind the half mirror in the usage at that time. It is also possible to show only the EVF image. Further, since it becomes difficult to see when the external light is strong, there is also a means for increasing the brightness of the EVF backlight, and the brightness is reduced when it is dark, which is an energy saving measure.

When only the camera is used, the EVF
It can be used as an information tool for characters and pictures. The EVF can display a very large amount of character information and images, unlike the liquid crystal display that is usually used in cameras, etc. Therefore, the EVF has required a large area when selecting the shutter speed and other modes. Etc. are unnecessary.

3) Although an optical viewfinder and a video LCD image are viewed at the same time, since the optical image and the LCD image appear to be dub, it is very difficult to see if there is a dull on a person's face. Is movable to any position in the viewfinder image. For example, if there is a sky or a part of the ground, there is no problem in shooting.

4) Also, since the LCD image is small, it may be difficult to see, but it is possible to make the LCD image the same size as the optical viewfinder by zooming. This allows
When only using video, LCD of the same size as before
Since you can see the image, there is no problem in shooting video.

Further, by making the optical viewfinder and the LCD image the same size and dubing them to move the video camera to match the images, parallax (parallax) correction becomes easy.

[0017]

EXAMPLE An example according to the above-described embodiment will be described in detail with reference to FIGS. 1 to 6: In the single lens reflex type silver salt camera body 1 shown in FIG. 1, 2 is a reflection mirror, and a film surface and a finder. The optical path is branched to and. Reference numeral 3 is a release button, and 4 is a display for displaying a film counter, a battery remaining amount check, a mode selection and the like. Reference numeral 5 is an accessory shoe, which is usually used with an external strobe (not shown) attached. The signals output are a flash sync signal, a zoom strobe zoom signal, and the like.

Reference numeral L denotes a lens unit, which is docked to the camera body by a known mount attachment / detachment method. 20 is
The video camera unit has an electric image pickup device (CCD) (not shown) inside and is configured so that the light passing through the lens system 21 is imaged on the CCD. The lens system 21 is a known zoom lens.

Reference numeral 22 denotes a foot for an accessory shoe, which is a camera 1
The accessory shoe 5 is configured to be detachable. The accessory shoe portion 22 is embedded so as to face the signal pins of the camera (not shown) so as to receive zoom and sync signals. 23 is a microphone.

Reference numeral 30 is an operation member unit, 31 is a zoom switch, and 32 is a trigger button cover, and the main switch is turned on by moving the cover in the direction of the arrow (the figure moved in the direction of the arrow is shown in FIG. 2).

Recording is turned on by pressing the trigger button once in this state. 33 is a video camera unit 20
A cable connecting the control unit 30 and the operation unit 30, 40 is a video deck unit, and a lid 41 is opened and a tape is put therein. An operation switch system 42 includes switches for recording, stopping, reproducing, pausing, and the like.

The deck portion 40 has a battery (not shown) housed in the portion B. Reference numeral 43 is a cable connecting the video deck section 40 and the video camera section 20. At the same time as the signal, power is supplied from the video deck section to the video camera section 20 and the operating section
Powering. Depending on the case (such as when the power of the camera is turned off), it is possible to provide a structure in which power can be supplied to the silver halide camera 1 part.

FIG. 2 is a view of the silver camera 1 viewed from the rear side, in which 6 is an eyepiece optical system, 7 is a back cover, and 7a is a hole for attaching the operation unit 30 and is threaded.
The threaded portion 35a of the operation portion unit 30 is inserted therein, and the ring 35 with knurling is rotated for attachment. 8
Is a connector that can supply and receive signals between the video unit unit side and the camera unit unit side, and the pin connector 44 shown in FIG. 1 is inserted therein.

A unit 9 for displaying an LCD image is housed in a viewfinder optical system, and a slide knob 10 is used to select transmission / non-transmission.

The finder optics will now be described in an exploded perspective view of FIG. 3: 2 is a reflecting mirror, which is raised and the shutter is opened and closed when taking a picture. After that, the reflection mirror 2 goes down and returns to its original position. Since this is a known technique, detailed description is omitted. La is a lens unit, and 11 is a known pentaprism, which bends the optical path from the bottom to the rear side. Reference numeral 12 is a focusing plate, 11a is a finder center optical path axis line, 15 is an LCD element, 15a is a backlight, and 16 is zoom optics. Reference numeral 17 denotes a half mirror, which covers the entire field of view of the finder and is arranged at approximately 45 °.
Reference numeral 17a is a central optical path axis of the LCD image, and 10 is a knob for moving the transmission / non-transmission light shielding plate 10a in the arrow direction.

Next, the LCD lens system 16, LCD 15,
The operation and structure of moving the backlight 15a to an arbitrary position will be described. In FIG. 2, reference numeral 51 is an LCD on / off switch, 52 is a switch for zooming the LCD lens 16 (FIG. 3) to the tele side, 53 is a switch for zooming to the wide side, and 54 is the LCD unit in the photographing optical axis direction. On the other hand, reference numeral 55 denotes a knob that is moved in the right-angled direction, and 55 is a knob that is moved in the photographing optical axis direction. Set the knob 54 to the arrow b in FIG.
When the knob 55 is moved in the direction of arrow a in the direction of arrow a, the portion to be reflected on the half mirror moves from a to b in FIG.
Reference numeral 60 denotes a switch for changing the contents displayed on the LCD.

Next, an exploded perspective view of the mechanism of the finder section is shown. In FIG. 4, the zoom lens unit 16 is housed in the cam barrel 100, and the cam barrel 100 has a gear portion 103, and is rotated by a motor 104 via a gear 105. By rotating the cam barrel 100, each cam groove 10
Lenses 1 and 2 move at 1 and 102 to perform zooming. The cam barrel 100 is fixed so as to be rotationally driven on the main plate 106. 106a and 106b are each 1
The motor 104 is fixed to the portion 106a which is integrally formed with the motor 06. Further, the LCD 15 and the backlight 15 a are also fixed to the main plate 106. 106c
Is a hole into which the protrusion 54a of the vertical slide knob 54 is inserted. When the knob 54 is moved up and down in the direction of the arrow, the base plate 106 is also moved up and down.

The main plate 106 has the shafts 107 and 108.
Each of the shafts 107, 108 has a threaded end, and by tightening with a nut 116 via a washer 114 compression spring 115, the shaft 107, 108 is coupled with the main plate 109 with a frictional force due to the spring thickness. It The shaft 108 is also invisible on the main plate 109, but the washer 114, the spring 115, the nut 11
It is tightened with the same one as 6. Each axis 108, 109
Will be slidably supported by the elongated holes 113 and 112 of the main plate 109. With this, the zoom lens barrel unit (an object placed on the main plate 106) is attached to each of the elongated holes 112, 11
It is moved up and down by moving the knob 54 up and down along the line 3.

Next, the main plate 109 is provided with a shaft 11 at a portion 109a.
0 and 111, and these two shafts have grooves 117a and 117b of the main plate 117 fixed to the camera body.
Is slidably supported on each of the shafts 110, 111.
Is fixed to a knob base plate 118 having a knob 55.

Therefore, when the knob 55 is moved in the direction of the arrow,
It means that the main plate 109 is sliding. Although the zoom lens barrel unit is slidable up and down on the main plate 109, the zoom lens barrel unit moves by an amount equivalent to the sliding of the knob 55 because it is fixed in the front and rear.

The zoom of the lens is moved by the motor as described above. Therefore, the zoom lens barrel unit and the LCD unit can be moved vertically and horizontally in the direction perpendicular to the LCD optical axis by sliding the knobs 54 and 55.

5 and 6 show two examples of finder images:
FIG. 5 shows a state in which the A section of the optical viewfinder of the camera and the LCD image B section are combined by a half mirror. This is Figure 3
It is a state where the LCD image is displayed at the position of 13B.
If this LCD image is at the bottom, it will be very difficult to see because it will be dub with the subject, so LC with the knobs 54, 55
It is the figure which brought the D image B to the empty part.

FIG. 6 shows a case where the center of the LCD image is brought to the center of the optical viewfinder and the image is enlarged by the up switches of the zoom switches 52 and 53 so that the image has a size substantially equal to that of the optical viewfinder. The solid line in the figure is the optical viewfinder image, and the dotted line is the LCD image.

At this time, if the knob 10a of the light shielding plate 10 is moved to the left, the optical finder is cut and all LCD images are formed. This is more convenient when using only video.

Next, the operation will be described: 1) The video camera 20 is attached to the accessory shoe 5 of the camera body 1. The cable pin 44 is inserted into the connector portion 8 of the camera.

2) The video operation member 30 is attached to the camera body 1
It is screwed into the screw hole 7a of the back cover 7 and stopped.

3) Modes other than L (lock) by turning the mode dial 1a of the camera are set to P (program) in FIG.

4) Slide the video main switch 35 to the left to turn it on. In this state, the LCD 15, the backlight 15a, and the deck unit 40 of the video camera 20 are powered on.

5) Looking through the finder in this state,
It seems. This corresponds to the part B in FIG. The optical image is A and the LCD image is B.

[0040] 6) next moving the LCD image of the video, from FIGS. 1 and 3, move the left and right slide knob 55 in the arrow direction opposite the image of B is up motion B ₁ toward the arrow b ₁ You can move the knob at any position until you stop it.

7) From FIGS. 1 and 3, the vertical slide knob 54
When is moved in the direction opposite to the arrow, the image of B moves in the direction of arrow b ₂ . After that, when the knob is moved to the position of B ₂ and the left and right knobs are moved to the position of B ₁ , the LCD image comes to the position of B ₃ .

8) In this way, bring the LCD image to the approximate center, and then press the U button 52 (FIG. 2) of the zoom switch to rotate the motor 104 and zoom lens barrel 10.
When 0 is turned, the lens moves and the image projected on the half mirror becomes large, as shown in FIG.

9) Here, the dotted line is the LCD image dotted line.
Since it is difficult to see when the image is doubled, the video camera unit 20 in FIG. 1 is moved by hand, the M direction is moved up and down, and the N direction is moved left and right to perfectly match the duplication of the finder image, thereby making the silver salt camera and video camera It is possible to adjust the para.

(Other Embodiments) FIG. 7 shows an exploded perspective view of an embodiment structure in which the video camera unit can be moved up and down / left and right: 20 'is a video camera unit, 21' is a lens unit, It is a known zoom optical system. 23 ', 23 "
Indicates a microphone unit. 201 is a main plate portion, and each hole 201
a, 201b, 201b is a hole for mounting, and 202 is a washer of an elastic member.

Reference numeral 203 denotes a turntable, which is a start-up section 203c,
203d, and through-holes 203a and 203b respectively
Two washers 202 and the main plate 201 are inserted between the respective rising portions 203c and 203d, and the screw portion 206a is tightened with the nut 207 through the shaft 206. This allows the video camera unit 20 'to swing its head up and down around the shaft 206 with a predetermined frictional force.

Next, the turntable 203 is constructed so that the shaft portion 205b of the accessory shoe 205 is inserted into the hole 203c, and the elastic member washer 204 is sandwiched therebetween to tighten the screw portion 205c with the nut 208. It becomes possible to rotate with a predetermined frictional force.

A hole 205e is formed in the shaft 205b portion, and the mounting wiring from the lower contact (not shown) of the accessory shoe 5 passes through the hole 205e. The wiring enters the video camera unit 20 'through the hole 201b.

[0048]

As described above, according to the present invention,
This is a composite camera of a still camera and a video camera. The image of the video camera is displayed on the LCD through a half mirror in the optical viewfinder of the still camera, and the LCD and its optical system are used as a zoom optical system. By moving it to an arbitrary position so that it does not overlap the subject in the optical viewfinder, both images became much easier to see.

Further, by enlarging the LCD image in the viewfinder by zooming, it becomes possible to view a large image in the viewfinder instead of a small image when only video is used. Also, parallax adjustment can be easily done by making the image almost the same size as the optical viewfinder and duplicating the image.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment compound camera.

FIG. 2 is an exploded rear perspective view of the compound camera of the embodiment.

FIG. 3 is an exploded perspective view of an exploded viewfinder section of the combined camera of the embodiment (No. 1)

FIG. 4 is an exploded perspective view of a disassembled finder portion of the compound camera of the embodiment (part 2).

FIG. 5 is an example of an exploded viewfinder field of view of a compound camera of the embodiment (No. 1)

FIG. 6 is an example of a field of view of a disassembled viewfinder of the compound camera of the embodiment (part 2).

FIG. 7 is an exploded perspective view of a video camera unit according to another embodiment.

[Explanation of symbols]

 5 Accessory shoe 6 Eyepiece (finder) 15 LCD 15a Backlight 16 Zoom lens unit 17 Half mirror 20 Video camera 30 Operation part 40 Video deck 52, 53 Zoom up / down button 54, 55 Vertical and horizontal slide knobs 100 Zoom tube 104 Zoom motor

Claims (3)

[Claims] 1. A composite camera integrally provided with, or integrally configurable with, a video camera for recording moving image information on a first recording medium and a still camera for recording still image information on a second recording medium. In, in a part of the optical viewfinder for the still camera, the video camera is displaying an image being captured by a display device, and is configured to be simultaneously visible in the viewfinder of the still camera via a half mirror, A composite camera, wherein a display unit for displaying a video image is movable in parallel with a display surface, and a display position of the video image is arbitrarily movable in a viewfinder of the still camera. 2. The compound camera according to claim 1, wherein the lens optical system of the display unit is a zoom optical system. 3. A compound camera integrally provided with a video camera for recording moving image information on a first recording medium, and a still camera for recording still image information on a second recording medium, or a composite of which can be integrally configured. In the camera, the video camera unit is configured to be coupled to the still camera, and the video camera unit is configured to be rotatable vertically and horizontally with respect to an optical axis direction of the still camera. .