JPH09307914A - Electronic development camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record an image with high accuracy by eliminating a shake of the body of the electronic development camera at the time of image pickup, which separates an object into three color light components and recording them. SOLUTION: In a color filter 310 separating an incident light from an image pickup optical system 301 into three colors, the color filter elements are arranged in the order of B, G, R from the upper side. ON the other hand, each recording area of an electronic development recording medium 200 is arranged in the order of B, G, R from the upper side. In the case of image pickup, the color filter is moved in a direction of the D and the electronic development recording medium 200 is moved in a direction of the U opposite to the direction D, then the three color light components are sequentially recorded to each color area of the electronic development recording medium 200.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electro-developing camera provided with an electro-developing recording medium for electronically developing an image obtained by photographing.

[0002]

2. Description of the Related Art Conventionally, a recording medium for electronically developing an optical image of a subject obtained by a photographing optical system is known.
For example, it is disclosed in Japanese Patent Laid-Open No. 5-2280. As an electro-developing camera for recording a color image using such a recording medium, a color filter having three RGB filter elements and an electro-developing recording medium having a plurality of recording media corresponding to the respective color filter elements are provided. Things are known.

In such an electro-developing type camera,
At the time of shooting, the color filters and the electro-developing recording medium are moved in the same direction while synchronizing with each other, and the incident light guided from the shooting optical system is sequentially passed through the three filter elements to perform color separation to obtain each color light component. Corresponding optical images are recorded in the respective recording areas of the electro-developing recording medium. That is,
In such an electro-developing type camera, at the time of shooting, the color filter and the electro-developing type recording medium are sequentially moved, stopped, and shot (exposure) for each color component.

[0004]

However, when the electro-developing recording medium and the color filter are moved in the same direction and stopped, the camera body shakes due to the weight of each and the inertia during movement, and within the recording area of each color component. The position of the recorded image of No. 1 is displaced, which causes deterioration of the reproduced image.

The present invention solves the above problems, and in a camera device for recording a subject image by separating it into a plurality of color components, the camera does not shake when the color filter or the electro-developing recording medium moves. The purpose is to record highly accurate image information.

[0006]

SUMMARY OF THE INVENTION An electro-developing camera according to the present invention comprises a color-separating optical system for separating a color component of a subject image into a plurality of color components, and a plurality of electronically developing and recording these images. An electro-developing recording medium having an image recording area, a first moving means for moving the color separation optical system in a first direction intersecting the optical axis of the photographing optical system at the time of image capturing, and an electro-developing recording medium. And a second moving means for moving the first direction in the second direction opposite to the first direction.

In the electro-developing camera of the present invention, the first direction and the second direction may extend in a plane substantially perpendicular to the optical axis of the photographing optical system.

In the electro-developing camera of the present invention, the driving source of the first moving means of the color separation optical system is the first DC motor, and the driving source of the second moving means of the electro-developing recording medium is the second. It may be two DC motors.

In the electro-developing camera of the present invention, the color separation optical system may be a color filter.

In the electro-developing recording medium, a plurality of image recording areas record a red light component, a first recording area, a green light component, a second recording area, and a blue light component, a third recording area. It may have a recording area, and the first recording area, the second recording area, and the third recording area may be arranged side by side in one direction.

In the color separation optical system, the elements corresponding to the plurality of color components are the first element corresponding to the red light component, the second element corresponding to the green light component, and the third element corresponding to the blue light component. It has an element, and the 1st element, the 2nd element, and the 3rd element may be arranged side by side in one direction.

In the electro-developing recording medium, a first recording area is arranged in order from the top in a direction perpendicular to the optical axis of the photographing optical system,
The second recording area and the third recording area are arranged, and in the color separation optical system, the third element, the second element, and the first element are arranged in this order from the top in the direction perpendicular to the optical axis of the photographing optical system. Elements may be arranged.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are external views of a still video camera to which an embodiment of the present invention is applied. FIG. 1 is a view of the camera body 100 as seen from diagonally above and front, and FIG. 2 is a view of the camera body 100 as seen from diagonally below and rearward.

A lens mount 101 for mounting an interchangeable lens 130, which is a photographic optical system, is formed on the front surface of the camera body 100 at substantially the center thereof. Lens mount 10
A detachment button 102 that is pressed down when detaching the interchangeable lens 130 is provided on the side of 1, and a white balance adjustment window 103 is provided on the upper left side of the lens mount 101. A strobe shoe 104 for mounting a strobe is provided substantially in the center of the upper surface of the camera body 100, and a release button 105 is provided on the side of the strobe shoe 104. A communication connector 106 for transmitting image data to an external computer or the like is provided on the side surface of the camera body 100.

A finder 110 is provided above the rear surface of the camera body 100. Below the finder 110, the mode setting switch 111 and the drive switch 11
2, an AV / TV switch 113, an EF switch 114, and a white balance switch 115 are provided. The mode setting switch 111 is a switch for setting the shooting mode of the still video camera, and the drive switch 112 is a switch for activating a self-timer, for example. The AV / TV switch 113 is used when selecting either the aperture priority mode or the shutter speed priority mode, and the EF switch 114 is used when correcting the Ev value. The white balance switch 115 is for performing white balance adjustment.

A liquid crystal display section 116 for displaying the operation mode of the camera and the like is provided on the rear surface of the camera body 100 on the side of the switch 111 and the like, and below the liquid crystal display section 116 depends on the operation mode of the camera. A mode indicator 117 that lights up in color and a scan start button 118 that is pressed in a scan mode for reading an image recorded on a recording medium are provided. A power switch 119 is provided below the scan start button 118. By operating the power switch 119,
The power is turned on and off, and the operation mode of the camera is switched between the shooting mode and the scan mode.

A slot 120 for mounting the electro-developing recording medium 200 is formed on the lower surface of the camera body 100, and the electro-developing recording medium 200 is inserted into the slot 120.
A dial 121 for moving the inside is provided. Next to the dial 121, an eject button 122 for ejecting the electro-developing recording medium 200 from the slot 120 is provided. Also, the camera body 10
0 on the lower surface of the screw hole 12 for fixing this to a tripod
3 is formed and a lid 12 for opening and closing the battery storage portion
4 are provided.

FIG. 3 is a block diagram of a still video camera. The system control circuit 300 is a microcomputer and controls the entire still video camera.

A photographing optical system 301 which is an interchangeable lens 130.
In addition to a plurality of lens groups, a diaphragm 302 is provided. An electro-developing recording medium 200 is provided behind the photographing optical system 301, and a color filter 310 is provided in front of the electro-developing recording medium 200. A quick return mirror 320 is provided between the photographing optical system 301 and the color filter 310, and the quick return mirror 3
A shutter 321 is provided between the color filter 20 and the color filter 310. A finder optical system prism 322 is provided above the quick return mirror 320, and a finder optical system loupe 323 is provided behind the prism 322 and the electro-developing recording medium 200. A light receiving element, which is a photometric sensor 324, is provided near the loupe 323.

The electro-developing recording medium 200 has first to third recording areas 201, 202 and 203, and each recording area 2
01, 202, and 203 each have a size of one screen. The color filter 310 includes an R (red) filter element 311 and a G (green) filter element 312 and B.
(Blue) filter element 313, and each filter element 311, 312, 313 has a recording area 201, 20
The size is approximately the same as 2, 203, that is, the size of approximately one screen.

The quick return mirror 320 and the shutter 321 are driven by a mirror drive circuit 330 and a shutter drive circuit 331, respectively, and these circuits 330 and 331 are controlled by an exposure control circuit 332. The exposure control circuit 332 is the system control circuit 3
It operates according to the command signal output from 00. That is, the quick return mirror 320 is normally set at the down position (inclined state shown by the solid line) which is a position for observing a subject, and guides the light passing through the photographing optical system 301 to the prism 322 of the finder optical system. However, during the shooting operation, the mirror drive circuit 330 rotates the lens upward to set it in the up position (horizontal state indicated by the broken line) under the control of the exposure control circuit 332.
Although the shutter 321 is normally closed, the shutter drive circuit 3 is controlled under the control of the exposure control circuit 332 during a shooting operation.
The light is opened for a predetermined time by 31, and thereby the light passing through the photographing optical system 301 is applied to the light receiving surface of the electro-developing recording medium 200.

A voltage (that is, a recording medium activation signal) is applied to the electro-developing recording medium 200 under the control of the recording medium driving circuit 333, and the electro-developing recording medium 200 is exposed during the voltage application. , The image formed by the photographing optical system 301 is developed as a visible image. The recording medium drive circuit 333 operates according to a command signal output from the system control circuit 300.

At a position below the shutter 321 and in front of the color filter 310 and the electro-developing recording medium 200, a light source 340 including, for example, a light emitting element (LED).
And collimator lens 341 and first and second mirrors 3
42 and 343 are provided, and a third filter is provided at a position behind the color filter 310 and the electro-developing recording medium 200.
The mirror 344, the scanner optical system 345, and the line sensor 346 are provided. The line sensor 346 is, for example, a 2000-pixel CCD one-dimensional sensor.

A part of the light beam emitted from the light source 340 passes through the collimator lens 341, is passed through the side of the first mirror 342, is guided to the second mirror 343, and is reflected there, and is reflected there. Be led to. Light source 3
A part of the light beam emitted from the first mirror 342 is part of the first mirror 342.
Is reflected by the third mirror 344, and the scanner optical system 34
It is guided to the line sensor 346 through 5. During the recording operation, the light reflected by the second mirror 343 causes the first to third recording areas 201 of the electro-developing recording medium 200,
In the vicinity of 202 and 203, a positioning index indicating a relative positional relationship between images recorded in respective recording areas is optically formed. In addition, the recording areas 201, 202, 20
When the image recorded in 3 is read, each recording area is positioned at a position where the light reflected by the first and third mirrors 342 and 344 passes, and the reflected light passes through the recording area and passes through the line. It is guided to the sensor 346.

The color filter 310 and the electro-developing recording medium 200 are movable along the direction perpendicular to the optical axis of the photographing optical system 301, that is, the direction in which the first to third recording areas 201, 202 and 203 are arranged. . Color filter 310
Is transferred by the first DC motor 503, and the first D
The control of the C motor 503 is performed by the filter moving circuit 350. The electro-developing recording medium 200 is moved by the second DC motor 351 at the time of photographing and by the stepping motor 352 at the time of image reading, and the second DC motor 351 and the stepping motor 352 are controlled by the recording medium moving circuit 353. .

During the photographing operation, the color filter 310 is moved by the first DC motor 503 at high speed when the respective filter elements are sequentially positioned on the optical axis of the incident light from the photographing optical system 301, and the electro-developing recording medium. When the recording areas 200 are sequentially positioned corresponding to the respective filter elements, the second DC motor 351 transfers the recording areas 200 in the direction opposite to that of the color filter 310.

In the vicinity of the color filter 310, a first photo interrupter 502 and a second photo interrupter 5 are provided.
09 are provided. First photo interrupter 50
2 detects the initial position of the color filter 310,
The movement amount of the color filter 310 is detected by the second photo interrupter 509 and an encoder described later. Based on the control of the system control circuit 300 based on the detection results of the first and second photo interrupters, the rotation operation of the first DC motor is controlled via the filter moving circuit 350, and the color filter 310 is positioned at a predetermined position. It

On the other hand, a third photo interrupter 359 is arranged near the electro-developing recording medium 200.
The position of the electro-developing recording medium 200 is detected by the third photo interrupter 359, and based on the control of the system control circuit 300 based on the detection result of the third photo interrupter 359, the second DC motor is passed through the medium moving circuit 353. The 351 rotation operation is controlled, and each recording area is positioned at a predetermined position.

During the reading operation for reading the image recorded on the electro-developing recording medium 200, the color filter 310 is positioned at a position retracted from between the first and third mirrors 342 and 344. In this state, the electro-developing recording medium 200 is moved by one horizontal scanning line at a low speed by the stepping motor 352, and each recording area 201, 20
2, 203 move between the first and third mirrors 342, 344 in a direction perpendicular to a line connecting these mirrors 342, 344. At this time, the image recorded in each recording area is illuminated by the light flux emitted from the light source 340, and is imaged on the light receiving surface of the line sensor 346.

The on / off control of the light source 340 is performed according to the control of the system control circuit 300, and the reading operation of the pixel signal generated in the line sensor 346 and the control of the recording medium moving circuit 353 are performed by the scanner driving circuit 354. These circuits 353 and 354 are controlled by the system control circuit 300.

The pixel signal read from the line sensor 346 is amplified by the amplifier 355, and the A / D converter 3
It is converted into a digital signal by 56. Under the control of the system control circuit 300, the digital pixel signal is subjected to processing such as shading correction and gamma correction in the image processing circuit 357. Then, this pixel signal is input from the image processing circuit 357 to the interface circuit 358 and subjected to predetermined processing such as format conversion and the like, and an external computer (not shown) or the like via the communication connector 106 (see FIG. 2). Can be output to. The interface circuit 358 and the image processing circuit 357 operate according to a command signal from the system control circuit 300.

An operation section 360 including switches such as a release button 105 provided on the camera body 100 is connected to the system control circuit 300. According to the operation of the operation unit 360, an image capturing operation, an image signal reading operation, and the like are performed. The system control circuit 300 is also connected to a liquid crystal display unit 117 (see FIG. 2) for displaying various setting states of the still video camera.

FIG. 4 is a diagram showing the structure of the electro-developing recording medium 200, which is the same as that disclosed in Japanese Patent Laid-Open No. 5-2280. That is, the electro-developing recording medium 200 includes the electrostatic information recording medium 210 and the charge holding medium 211.
A voltage is applied to the electrostatic information recording medium 210 and the charge holding medium 211 by the power supply 212. The electrostatic information recording medium 210 is formed by laminating a substrate 213, an electrode layer 214, an inorganic oxide layer 215 and a photoconductive layer 216,
The photoconductive layer 216 includes a charge generation layer 217 and a charge transport layer 218.
Is polymerized. The charge holding medium 211 is configured by enclosing the liquid crystal 221 between the liquid crystal support 219 and the liquid crystal electrode layer 220. The charge transport layer 218 of the electrostatic information recording medium 210 and the liquid crystal support 219 of the charge holding medium 211 face each other with a minute gap.

The power supply 212 is on / off controlled by the recording medium drive circuit 333, and when the power supply 212 is in the on state, a voltage is applied between the electrode layer 214 and the liquid crystal electrode layer 220, that is, the electrostatic information recording medium 210 and the charge holding medium 211. Is applied. When the electrostatic information recording medium 210 is exposed in this voltage applied state, the electrostatic information recording medium 210 generates electric charges according to the image. Since the strength of the electric field acting on the liquid crystal 221 changes according to this charge, the image is displayed on the liquid crystal 221 as a visible image, and the subject image is developed.
The charge holding medium 211 is, for example, a memory type liquid crystal display element in which a smectic liquid crystal is sealed, and the developed visible image is held even if the electric field is removed. This liquid crystal display element can erase a developed visible image by heating to a predetermined temperature using a heating device (not shown), and in that case, the same recording medium can be used repeatedly. .

FIG. 5 is a view of the color filter 310 and a drive block 501 which is a drive mechanism thereof as viewed from the side of the photographing optical system 301. The color filter 310 has a support plate 510 having a substantially rectangular shape. 3 for the support plate 510
Two holes 511, 512, 513 are provided in the vertical direction. The B filter element 311 is attached to the hole 511, the G filter element 312 is attached to the hole 512, and the R filter element 313 is attached to the hole 513. Each filter is large enough to cover the corresponding hole.
A rack 530 is provided on the right side of the support plate 510 except for the upper end and the bottom, and an initial position detection edge 515 is provided on the bottom of the right side. Further, a guide groove 514 extending in the vertical direction is provided adjacent to the rack 530 at the right end of the support plate 510. The support plate 510 is caulked to the drive block 501 by two caulking studs 521 and 522 which are inserted through the guide groove 514.

The driving block 501 has an initial position detecting section 501a provided with a first photo interrupter 502 for detecting an initial position, and a driving section 501b having a first DC motor 503 for transferring the support plate 510. have. A gear 505 meshes with the output shaft 504 of the first DC motor 503. Pinion gear 506 is gear 5
05 double gear, rack 530 of the support plate 510
And are engaged. The gear 505 meshes with a gear 507 provided at the center of the encoder 508. That is, the rotation of the first DC motor 503 is transmitted to the pinion gear 506 via the output shaft 504 and the gear 505, and the pinion gear 506 rotates, whereby the pinion gear 5
06 through the rack 530 in mesh with the support plate 51.
0 is transferred. At the same time, the rotation of the first DC motor 503 is transmitted to the gear 507 via the output shaft 504 and the gear 505, and the encoder 508 having the gear 507 as an input shaft rotates. Further, the encoder 508 is provided with grooves at equal intervals along the outer peripheral edge. The second photo interrupter 509 detects a groove passing by the rotation of the encoder 508 and outputs a detection signal to the system control circuit 300. The system control circuit 300 counts the number of grooves of the encoder 508 according to the detection signal from the second photo interrupter 509, and thus the output shaft 5
04, gear 505, and gear 507
The amount of rotation of the DC motor 503 transmitted to 8 is measured.

6 to 8 show a structure for transferring the electro-developing recording medium 200. The state shown in FIG.
This is a state in which the electro-developing recording medium 200 is in the initial position (that is, the position for starting a recording operation) at the time of recording an image. Further, in FIG. 6, the imaging aperture AP corresponds to the shutter 321.

The electro-developing recording medium 200 is attached to the recording medium holding member 401. Recording medium holding member 4
Reference numeral 01 denotes an engagement member 4 movably supported by a pair of shafts 403 and 404 and fixed to a recording medium holding member 401.
07 is engaged with the thread groove of the transfer screw 405. The transfer screw 405 is rotatably supported about its axis by a bearing (not shown) provided at the upper end of the transfer screw 405 and a first support plate 411 fixed at the substantially central portion thereof. When the transfer screw 405 rotates, the recording medium holding member 401 moves up and down along the shafts 403 and 404 via the engaging member 407.

A transfer gear 421 is provided on the protruding portion of the transfer screw 405 from the support plate 411. First
Second support plate 412 provided in parallel with the support plate 411 of the
The second DC motor 351 is attached to the lower surface of the gear 422 fitted to the output shaft of the second DC motor 351.
Is located above the second support plate 412, and the transfer gear 421
Is engaged. Therefore, when the second DC motor 351 is driven, the gears 421 and 422 and the transfer screw 4
05 rotates, and the recording medium holding member 401 moves up and down. That is, the second DC motor 351 moves the electro-developing recording medium 200 by one screen, that is, by the vertical length of each recording area 201, 202, 203 in FIG.

A stepping motor 352 is fixed on the upper surface of the first support plate 411, and the first and second support plates 4 are connected to each other.
A reduction gear mechanism 430 is provided between 11, 412. The output shaft of the stepping motor 352 penetrates the first support plate 411 and projects downward, and the gear 423 fitted to the tip of the output shaft is the gear 43 of the reduction gear mechanism 430.
1 is engaged. The final stage gear 432 of the reduction gear mechanism 430 receives the second DC motor 3 via the clutch 440.
It is possible to mesh with a gear 422 fixed to the output shaft of 51. The clutch 440 is pivotally supported by an arm 441 that swings according to the rotation direction of the gear 432, and this arm 411.
The transmission gear 442 is meshable with the gear 422 of the second DC motor 351.

That is, when the gear 423 of the stepping motor 352 rotates in the normal direction, the clutch 440 is brought into the connected state, and thereafter, when the gear 423 continues to rotate in the normal direction, the gear 422,
The transfer screw 405 rotates via 421, and the electro-developing recording medium 200 moves at a predetermined low speed. At this time, the second DC motor 351 is rotationally driven with a predetermined torque to reduce the load on the stepping motor 352. On the other hand, when the gear 423 of the stepping motor 351 rotates in the reverse direction, the clutch 440 is disengaged. When the second DC motor 351 rotates in this state, the electro-developing recording medium 200 and the color filter 310 move at a predetermined high speed and are moved by one screen as described above. A recording operation is performed during this transfer operation, and the first to third recording areas 201, 202, and 203 are respectively formed in the imaging aperture A.
The image of R, G, and B is recorded in P. After this recording operation, in the reading operation, the electro-developing recording medium 2
00 is set to 1 at low speed by the stepping motor 352.
The image is transferred in units of horizontal scanning lines, and the R, G, and B images are read by the line sensor 346 (see FIG. 3).

It should be noted that the respective transfer mechanisms are arranged so that the moving speed of the color filter 310 by the first DC motor 503 and the moving speed of the electro-developing recording medium 200 by the second DC motor 351 during the recording operation become the same. The speed reduction ratio, the drive voltage, etc. are set appropriately, and both transfer start and stop substantially at the same time except that the transfer directions are different.

FIG. 7 is a view of the recording medium holding member 401 as seen from the front of the camera body. Recording medium holding member 401
Is a frame and has an opening 409 having a size corresponding to the electro-developing recording medium 200. Light-shielding plates 471, 472, and 473 are provided on the left edge of the recording medium holding member 401. These light shielding plates 471 to 473 are provided for positioning the electro-developing recording medium 200 as described later.

As shown in FIG. 8, the parent plate 402 is a fixed frame and is provided in parallel with the shafts 403 and 404. A third photo interrupter 470 is attached to a portion near the shaft 403. Light shielding plates 471 to 473 provided on the recording medium holding member 401 (see FIG.
(See reference) is located in the photo interrupter 470,
The first to third recording areas 201 to 203 are respectively located in the imaging aperture AP, and the photo interrupter 47
A signal indicating the position of the electro-developing recording medium 200 is output from 0 to the system control circuit 300 (see FIG. 3).

9 and 10 are perspective views showing the positional relationship among the photographing optical system 301, the light source 340, the collimating lens 341, the color filter 310, and the electro-developing recording medium 200 of the electro-developing type camera during photography. . Although not shown in these figures, the shutter 321 is actually provided between the photographing optical system 301 and the color filter 310 as shown in FIG.

When the release switch 105 (see FIG. 1) is pressed by the operator, the shutter 321 opens and closes three times, and the color filter 310 and the electro-developing recording medium 200 move simultaneously in conjunction with this opening and closing operation. Recording of each color-separated light component is performed.

FIG. 9 shows the state when the shutter is opened for the first time, and the color filter 310 and the electro-developing recording medium 200 are both positioned at the initial position. That is, the R filter element 513 of the color filter 310 and the red recording medium 201 of the electro-developing recording medium 200 are located on the optical axis of the incident light from the photographing optical system 301.

The positioning of the color filter 310 to the initial position is performed by the first position detection edge 515 provided at the bottom of the right side of the support plate 510 of the color filter 310 and the first position.
Is performed by the photo interrupter 502 (see FIG. 5). That is, when the first photo interrupter 502 detects the initial position detection edge 515, it is transmitted to the system control circuit 300, and under the control of the system control circuit 300, the second DC motor 503 (see FIG. 5) via the filter moving circuit 350. Is stopped, the transfer of the support plate 510 (see FIG. 5) is stopped, and the color filter 310 is positioned at the initial position.

On the other hand, the positioning of the recording medium unit 200 to the initial position is performed by the third photo interrupter 470 (see FIG. 8) and the light shielding plate 473 (see FIG. 7).
That is, the third photo interrupter 470 is used as the light blocking plate 4
When 73 is detected, it is transmitted to the system control circuit 300, and the rotation of the second DC motor 351 is stopped via the medium moving circuit 353 under the control of the system control circuit 300, and the recording medium unit 200 is positioned at the initial position.

In this state, the recording process of the image of the red light component is performed. Incident light from the photographing optical system 301 that has passed through a shutter (not shown) passes through a hole 513 (see FIG. 5) to which an R filter element 313 is attached and is guided to the electro-developing recording medium 200, and a red recording medium is obtained. The red light component is recorded at 201 (see FIG. 6).

After that, when the shutter is closed, the support plate 510 of the color filter 310 is moved in the D direction and the recording medium unit 200 is moved in the U direction at the same time.
It is positioned so that the incident light guided from No. 1 passes through the shutter and is guided to the recording medium 202 of the green light component of the recording medium unit 200 via the G filter element 512 of the color filter 310.

The amount of movement of the support plate 510 of the color filter 310 is controlled by the system control circuit 300 counting the number of grooves of the encoder 508 by the detection signal from the second photo interrupter 509 of the drive block 501 ( (See FIG. 5). That is, the detection signal of the second photo interrupter 509 is counted, and when the number of grooves of the encoder 508 reaches a predetermined amount, the filter moving circuit 3 is controlled according to the control of the system control circuit 300.
The rotation of the first DC motor 503 is stopped via 50 and the G filter element is positioned at a predetermined position. The system control circuit 300 includes a first DC motor 503 required to move the support plate 510 from the initial position until the G filter element 512 is positioned at the photographing position.
The number of groove counts of the encoder corresponding to the rotation amount of is incorporated.

On the other hand, the amount of movement of the electro-developing recording medium 200 is controlled by the light shielding plate 472 and the third photo interrupter 470. That is, the electro-developing recording medium 200
Starts to move in the U direction from the initial position, and the light blocking plate 472 of the recording medium holding member 401 causes the third photo interrupter 4 to move.
When detected by 70, the system control circuit 300
The second DC via the medium moving circuit 353 according to the control of
The motor 351 stops and the movement of the recording medium holding member 401 stops. That is, the light blocking plate 472 is provided at a portion detected by the third photo interrupter 470 when the green light component recording medium 202 is positioned at a position corresponding to the imaging area AP.

In this state, the shutter is opened for the second time, and the green light component is recorded in the same manner as the red light component is recorded. That is, the incident light from the photographing optical system 301 passes through the hole 512 to which the G filter element 312 is attached, and the green light component is recorded on the green recording medium 202.

After that, when the shutter is closed, the color filter 310 moves in the direction D to the electro-developing recording medium 200.
Is further moved in the U direction, and as shown in FIG. 10, incident light guided from the photographing optical system 301 passes through the shutter and passes through the B filter element 511 of the color filter 310,
Recording medium 20 for blue light component of electro-developing recording medium 200
It is positioned so as to be guided to 3. In this state, the shutter is opened for the third time, the blue light component is recorded similarly to the recording of the red light component and the green light component, and the blue component of the incident light from the photographing optical system 301 is recorded on the blue recording medium 203. Will be recorded.

The movements of the color filter 310 and the electro-developing recording medium 200 are controlled similarly to the movement from the recording position of the red light component to the recording position of the green light component. That is, the movement of the color filter 310 is controlled by the system control circuit 300 counting the number of grooves of the encoder 508 by the detection signal from the second photo interrupter 509, and the electro-developing recording medium 200 is controlled.
Of the third photo interrupter 470 and the light shield plate 4
Controlled by 73.

After the above recording operation, in the reading operation,
The color filter 310 is retracted to a position where it does not interfere with the optical path of the scanner optical system 345, and then the electro-developing recording medium 2
00 is moved at a low speed by one horizontal scanning line by the stepping motor 352, and the R, G, B images are read by the line sensor 346 (see FIG. 3).

As described above, according to the present embodiment, since the electro-developing recording medium 200 and the color filter 310 move in opposite directions when an image is taken, the inertias during the respective movements are offset. Therefore, when the electro-developing recording medium 200 and the color filter 310 are stopped to record each color light component, the camera body does not shake, and as a result, deterioration of the recorded image is prevented.

In this embodiment, the shading plates 471 to 473 and the third photo interrupter 470 are used to position the electro-developing recording medium 200, and the encoder 508 and the second photo interrupter 509 are used to position the color filter 310. However, the present invention is not limited to this, and an encoder may be used for positioning the electro-developing recording medium 200 and a light shielding plate may be used for positioning the color filter 310.

A combination of a light shielding plate and an encoder may be used for each positioning. That is,
Even if a mechanism for positioning the electro-developing recording medium or the color filter is used by the fact that the number of encoder grooves counted by the photo interrupter reaches a predetermined amount and the light shielding plate passes through another photo interrupter. Good.

Further, in this embodiment, the color filter 3
10 and the electro-developing recording medium 200 are independently used as the transfer mechanism and the position detection mechanism, but the present invention is not limited to this, and the same transfer mechanism and position detection mechanism may be used for both.

It is more preferable that the total weight of the electro-developing recording medium 200 and the total weight of the color fill 310 are substantially the same.

[0063]

According to the present invention, in a still video camera for separating a light component into three color components and recording the same, high-precision image information can be obtained without moving the camera due to movement of a color filter or a recording medium during image capturing. It is recorded on a recording medium.

[Brief description of drawings]

FIG. 1 is an external view of a still video camera to which an embodiment of the present invention is applied, as viewed from diagonally above and front.

FIG. 2 is an external view of a still video camera to which an embodiment of the present invention is applied, as viewed from diagonally below and rearward.

FIG. 3 is a block diagram showing a circuit configuration of a still video camera.

FIG. 4 is a diagram illustrating a configuration of an electro-developing recording medium.

FIG. 5 is a diagram showing a configuration of a drive mechanism of a color filter as seen from the front of the camera.

FIG. 6 is a diagram of a configuration of a drive mechanism of the electro-developing recording medium as viewed from the rear of the camera.

FIG. 7 is a diagram of a recording medium holding member of the electro-developing recording medium as seen from the front of the camera.

FIG. 8 is a diagram showing a configuration of a master plate of the electro-developing recording medium.

FIG. 9 is a schematic diagram when recording a red component by the still video camera of the present embodiment.

FIG. 10 is a schematic diagram when recording a blue component by the still video camera of the present embodiment.

[Explanation of symbols]

 200 Electro-Development Type Recording Medium 300 System Control Circuit 301 Photographing Optical System 310 Color Filter 351 Second DC Motor 359 Third Photo Interrupter 401 Electro Development Type Recording Medium Holding Member 502 First Photo Interrupter 503 First DC Motor 508 Encoder 509 Second photo interrupter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Yamamoto 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Kogaku Kogyo Co., Ltd.

Claims (9)

[Claims] 1. A color separation optical system for separating color components of a subject image into a plurality of color components, and an electro-developing recording medium having a plurality of image recording areas for electronically developing and recording these color components, respectively. At the time of image capturing, the color separation optical system is moved in a first direction intersecting the optical axis of the image capturing optical system, and the electro-developing recording medium is moved in a first direction opposite to the first direction. An electro-developing camera, comprising: a second moving unit that moves in the direction of 2. 2. The electro-developing camera according to claim 1, wherein the first direction and the second direction extend in a plane substantially perpendicular to the optical axis of the photographing optical system. . 3. A drive source of the first moving means of the color separation optical system is a first DC motor, and a drive source of the second moving means of the electro-developing recording medium is a second DC motor. The electro-developing camera according to claim 1, which is a motor. 4. The electro-developing camera according to claim 1, wherein the color separation optical system is a color filter. 5. In the electro-developing recording medium, the plurality of image recording areas record a first recording area for recording a red light component, a second recording area for recording a green light component, and a blue light component. The electro-developing type camera according to claim 1, further comprising a third recording area for performing the same. 6. The electro-developing camera according to claim 5, wherein the first recording area, the second recording area and the third recording area are arranged side by side in one direction. 7. An element corresponding to the plurality of color components in the color separation optical system corresponds to a first element corresponding to a red light component, a second element corresponding to a green light component, and a blue light component. A third element having
The electro-developing type camera described in. 8. The electro-developing camera according to claim 7, wherein the first element, the second element and the third element are arranged side by side in one direction. 9. In the electro-developing recording medium, the first recording area, the second recording area, and the third recording area are arranged in order from the top in a direction perpendicular to the optical axis of the photographing optical system. The third element, the second element, and the first element are arranged in order from the top in a direction perpendicular to the optical axis of the photographing optical system in the color separation optical system. Claim 6 and Claim 8 characterized by
The electro-developing type camera described in.