JP2001249377A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera having simple constitution, made small in size and capable of performing sure finder field changing and switching display, combined with confirming display for release photographing operation by concencurrently using a field range switching mechanism also for the display for release photographing operation. SOLUTION: This camera is equipped with a finder, a field mask provided within field observed through the finder and capable of moving to a position for displaying a 1st field range and a position for displaying a 2nd field range, and a field mask display driving means for moving the field mask according to the release photographing operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly, to a camera having a view range change switching mechanism finder.

[0002]

2. Description of the Related Art Conventionally, various cameras and switching mechanisms having a view range change switching mechanism finder have been proposed.
For example, Japanese Patent Application Laid-Open No. Hei 5-88238 discloses a camera in which a photographing screen size can be switched between a full size screen and a panoramic size screen. A mechanism is disclosed.

Further, the present applicant has previously filed Japanese Patent Application No. 10-11 / 1998.
In US Pat. No. 5,487, the polymer dispersed type liquid crystal is used on the entire surface of the viewfinder of the camera, so that the liquid crystal display is normally output in the shooting standby state and the release signal is output in the transmission state and the liquid crystal display A technique has been proposed that can temporarily notify the user of whether or not the shutter has been released and shooting has been performed by temporarily lowering the transmittance.

[0004]

However, the technical means disclosed in the above-mentioned Japanese Patent Application Laid-Open No. Hei 5-88238 discloses that
There is no disclosure of a technique for confirming whether or not photographing has been performed by a shutter operation in the viewfinder.

In Japanese Patent Application No. 10-115487, a liquid crystal device is required in order to enable a photographing screen size switching display and a finder transmission / non-transmission display. It is disadvantageous in cost from the frame mechanism. In addition, since the transmittance is low, there is a disadvantage that the inside of the viewfinder is normally dark. Further, the thickness increases in the optical axis direction, which is disadvantageous in terms of space.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has a simple structure, is small in size, and reliably switches viewfinder changeover by using a view range switching mechanism also for displaying a release photographing operation. It is an object of the present invention to provide a camera capable of displaying and confirming a release and shooting operation.

[0007]

In order to achieve the above object, a first camera according to the present invention is provided in a viewfinder and a position for displaying a first view range provided in a view observed by the viewfinder. A field mask movable to a position for displaying the second field of view, and field mask display driving means for driving and moving the field mask in accordance with a release shooting operation.

In order to achieve the above object, a second aspect of the present invention is provided.
Is provided to display a photographing range in a viewfinder and a field of view observed by the viewfinder, and a first position for displaying a first field of view and a second position for displaying a second field of view. And a field-of-view switching means for selectively switching the field-of-view mask between the first position and the second position in response to a switching operation signal, and a field-of-view switching means. And a field mask display driving means for moving the field mask switched by at least between the first position and the second position in accordance with a release photographing operation.

In order to achieve the above object, a third aspect of the present invention is provided.
Is a camera capable of changing a photographing screen size by covering an aperture opening provided in a camera body, wherein a photographing screen size can be switched.
A photographing screen size defining member that moves to the screen position of and defines at least two selected photographing screen sizes;
A field of view provided for displaying a photographing range within a field of view observed by a viewfinder, and movable to a first position for displaying a first field of view and a second position for displaying a second field of view. A mask, a driving source for moving and driving the photographing screen size defining member and the visual field mask, and moving the photographing screen size defining member and the visual field mask into the first position and the second position according to a switching operation signal. A field-of-view range switching means for selectively switching the field-of-view mask, which is switched by the field-of-view field switching means, at least between the first position and the second position in accordance with a release photographing operation. And a field mask display driving means to be moved by the above.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing a main part of a camera according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a main part of the camera.

FIGS. 3 to 6 are plan views showing main gear trains in respective operation states of the main part of the camera. FIG. 3 shows a state when zooming operation is possible.
FIG. 5 shows the state when the film winding operation is possible, FIG.
FIG. 6 shows a state in which the film can be rewound, FIG.
Indicates a state when the shooting screen size switching operation is possible.

In the camera according to the first embodiment, as shown in FIG. 2, a main body drive motor 201 is disposed in a spool 217 in a known manner. In FIG. 1, the main body drive motor 201 and the spool 217 are shown separately for explanation. The main body drive motor 201 can rotate in the CW direction and the CCW direction. The sun gear 202 is attached to the main body drive motor 201 so as to coincide with the center of rotation, and the planetary gear 203 is supported so as to always mesh with the sun gear 202. Further, the carrier 204 is disposed at a position where the rotation center of the carrier 204 coincides with the main body drive motor 201,
The planetary gear 203 is supported with a frictional force.

A stopper 205 is a fixed member that regulates the rotation angle of the carrier 204, and the switching plunger 206 includes a coil 206a and the plunger core 20.
The rotation of the carrier 204 is restricted by an actuator composed of a plunger 6b and a plunger spring 206c.

The coil 206a is normally not energized, the plunger core 206b is urged by a plunger spring 206c and is in a protruding state, and holds the carrier 204 between itself and the stopper 205.
On the other hand, when the coil 206a is energized, the plunger core 206b is attracted to the coil 206a, the holding state of the carrier 204 is released, and the carrier 204 is moved within the range regulated by the stopper 205.
It becomes rotatable by the driving force of 01.

When the power supply to the coil 206a is stopped when the carrier 204 has rotated to the vicinity of the rotation limit by the stopper 205, the plunger 206b is protruded by the urging force of the plunger spring 206c, and the carrier 204 is moved between the carrier 205 and the stopper 205. Again and the carrier 204
Regulate the rotation of

By the above operation, the planetary gear 20
Reference numeral 3 selectively meshes with one of a first zoom gear 209 and a hoisting sun gear 208 which will be described later.

The carrier photo-interrupter 207 (hereinafter referred to as a carrier PI 207)
4 is a photo-interrupter for detecting the position, and the winding sun gear 208 meshes with the planetary gear 203 when the main body drive motor 201 rotates in the CW direction and the carrier 204 rotates. ing.

The first zoom gear 209 engages with the planetary gear 203 when the main body drive motor 201 rotates in the CCW direction and the carrier 204 rotates. Also, the second zoom gear 210,
The third zoom gear 225, the fourth zoom gear 226, and the fifth zoom gear 227 are connected to the first zoom gear 209.
It is designed to rotate following the rotation of. The third above
The zoom gear 225 is composed of a two-stage spur gear, and the fourth zoom gear 226 and the fifth zoom gear 22
Reference numeral 7 denotes a two-stage gear, one of which is a bevel gear, which changes the rotation direction. The other gear of the fifth zoom gear 227 is a spur gear, which meshes with a gear 51 a of the rotating frame 51 to rotate the rotating frame 51.

Zoom photo interrupter idle gear (hereinafter abbreviated as zoom PI idle gear) 211
Is a gear driven by the fourth zoom gear 226, and a zoom photo interrupter gear (hereinafter abbreviated as a zoom PI gear) 212 is driven by the zoom PI idle gear 211. A slit portion 212a is formed.

The zoom photo interrupter 213 (hereinafter, referred to as a zoom photo interrupter 213)
The zoom PI 213) reads a pulse signal by the rotation of the slit 212a of the zoom PI gear 212, and detects the rotation amount of the rotating frame 51.

The check member 214 is urged toward the first zoom gear 209 by a check spring 232, which is a compression spring, and has a claw 214a tapered toward its tip at its tip. ing. The check member 21
4 is a case where the planetary gear 203 is wound up and the sun gear 20 is wound.
8, the claw 214a is cut between the teeth of the first zoom gear 209, thereby preventing the rotating frame 51 from being accidentally rotated by an external force. . When the planetary gear 203 meshes with the first zoom gear 209, the carrier 204
Of the first zoom gear 2
09, the rotating frame 51 can freely rotate.

The hoisting planet gear 215 is connected and supported by a hoisting carrier 216 so as to always mesh with the hoisting sun gear 208. That is, the hoisting carrier 216 is disposed so that the center of rotation thereof coincides with that of the hoisting sun gear 208, and supports the hoisting planetary gear 215 with a frictional force.

The main body drive motor 201 is disposed inside the spool 217 as described above, and a gear 217a is formed on a lower outer peripheral surface. When the main body drive motor 201 is rotated in the CW direction, the winding carrier 216 is rotated toward the spool 217,
The hoisting planet gear 215 and the spool 217 mesh with each other and rotate. Further, on the upper outer peripheral surface of the spool 217, a claw 217b for engaging with a perforation hole of the film is formed so as to protrude therefrom.
The film is wound by rotating the film.

The locking lever 218 is swingably supported in the middle of both ends so that one arm 218a engages with the plunger core 206b of the switching plunger 206 and the other arm 218b locks the carrier 204. When the plunger core 206b is attracted to the coil 206a, the locking of the carrier 204 is released.

The panoramic sun gear 219 meshes with the hoisting planetary gear 215 when the main body drive motor 201 rotates in the CCW direction while the planetary gear 203 meshes with the hoisting sun gear 208. . The panoramic planetary gear 220 is supported so as to always mesh with the panoramic sun gear 219. The panoramic carrier 221 is disposed at a position where the rotational center coincides with the panoramic sun gear 219, supports the panoramic planetary gear 220 with frictional force, and serves as a rotational center of the panoramic planetary gear 220. Further, a shaft 221a extending below the panoramic planetary gear 220 is formed.

The cam gear 222 is a gear for switching the photographing screen size. When the main body drive motor 201 is rotated in the CCW direction while the planetary gear 203 is engaged with the hoisting sun gear 208, the cam gear 222 is wound up. The carrier 216 has the panoramic sun gear 219
The hoisting planet gear 215 meshes with the panoramic sun gear 219 to rotate it. In addition, the panorama carrier 221 is rotated by the rotation of the panorama sun gear 219, so that the cam gear 22 is rotated.
Rotating to the second side, the panoramic planetary gear 220 and the cam gear 222 mesh with each other and rotate.

Further, a second cam 222b for operating a screen size detection switch 245 (hereinafter, referred to as a PN detection switch SW) for detecting a state of the two light shielding masks 242, 243 is provided above the cam gear 222. The first cam 222a for moving the two light-shielding masks 242, 243 is formed further above the second cam 222b.

The switching lever 223 has, at one end thereof, a panorama planetary gear 220 of the panorama carrier 221.
A groove 223a that engages with a shaft 221a that supports the switch lever 223 is formed, and a projection 223b is vertically provided at the other arm end of the switching lever 223. The projections 223b are provided on the rotating frame 5 with respect to the cams 51d formed on the rotating frame 51.
The first rotation makes contact.

The switching lever 223 is rotatably supported by a supporting shaft in the middle of the switching lever 223. The switching lever 223 is rotated at the other arm end by the rotation of the cam 51d of the rotary frame 51, and is engaged with one arm end. The panorama carrier 221 thus rotated is rotated. As a result, the panorama planet gear 220
Are engaged with the first rewind gear 224.

On the other hand, when the cam 51d of the rotary frame 51 and the projection 223b are located at a distance from each other, the switching lever 223 is driven by the panorama carrier 221.

The first rewind gear 224 and the second
Rewind gear 228, third rewind gear 229, fourth rewind gear 230, fifth rewind gear 231
Are driven by the rotation of the panorama planetary gear 220, respectively. The first rewind gear 2
Reference numeral 24 denotes a two-stage spur gear, and a fifth rewind gear 23.
Reference numeral 1 denotes an unillustrated spool which is disposed in a patrone in a state in which the center of rotation coincides with the center of rotation. The unillustrated fork 1 is provided for rotating the unillustrated spool shaft to rewind the film. .

FIGS. 7 to 17 are explanatory views showing the panorama switching mechanism of the present embodiment.

FIG. 7 is a perspective view showing the entire panorama switching mechanism, and FIGS. 8 to 11 are plan views showing cam gears in the camera. Also, FIG.
FIG. 1 is a front view of a main part showing a panorama switching mechanism in a state where a wide shooting screen size is selected in the camera,
FIG. 3 is a main part front view showing the panorama switching mechanism in a state where a narrow photographing screen size of the camera is selected. Further, FIG. 14 is a side view of a main part showing a panorama switching mechanism in a state where a wide shooting screen size in the camera is selected, and FIG. 15 is a side view showing a panorama switching mechanism in a state where a narrow shooting screen size in the camera is selected. It is a principal part side view shown. FIG. 16 is a side view showing a main part of the panorama switching mechanism in a state where a wide photographing screen size of the camera is selected, viewed from a direction opposite to FIG. 14, and FIG. FIG. 16 is a main part side view showing the panorama switching mechanism in a state where a screen size is selected, viewed from a direction opposite to FIG. 15.

As shown in FIG. 7, the first panoramic gear 2
Reference numeral 40 denotes a swing center 240d which is supported on a main plate (not shown) so as to be vertically swingable in the drawing. A cam gear 222 is provided below the first panoramic gear 240.
An arm 240a, which is a cam follower contacting the first cam 222a, is formed, and the rotation of the cam gear 222 causes the first panoramic gear 240 to swing about the swing center 240d as a fulcrum. ing. The first
The tip of one arm of the panoramic gear 240 is a partial gear 240
b, and a partial gear 240c is formed at the tip of the other arm, respectively.
2, meshes with the second panoramic gear 241.

As shown in FIG. 7, the second panoramic gear 241 is swingably supported on a base plate (not shown) at a swing center 241d in the vertical direction in the figure, and a partial gear 241a is provided at the tip of one arm. Is formed, meshes with the partial gear 240b of the first panoramic gear 240, and swings in cooperation with the rotation of the first panoramic gear 240. Also, at the tip of the other arm, a partial gear 2
41b are formed and mesh with the upper light shielding mask 243.

The lower light-shielding mask 242 and the upper light-shielding mask 243 are both supported at their base ends by a fixed shaft 239 (not shown) so as to be vertically movable in FIG. The fixed shaft 239 is supported by a main plate (not shown). The lower light-shielding mask 242 is movable in the axial direction of the fixed shaft 239, and is moved by the movement.
Reference numeral 42a is adapted to enter or retreat into the photographing aperture opening 4c of the main body 4. The lower light-shielding mask 242 is moved by the first panoramic gear 2 meshing with a gear 242b formed on one side surface of the base end.
It is made to follow the swing of 40.

The upper light-shielding mask 243 is supported together with the lower light-shielding mask 242 so as to be movable in the axial direction by a fixed shaft 239 (not shown). The upper light shielding mask 243
The light-shielding portion 243a moves into or out of the photographing opening 4c of the main body by the movement of. The movement of the upper light-shielding mask 243 is performed by the swing of the second panoramic gear 241 meshing with the gear 243b formed on one side surface of the base end. A gear portion 243c is formed to protrude from the upper surface of the base end of the upper light-shielding mask 243, and meshes with a panorama switching gear 171 that transmits power to the finder portion.

The upper and lower light shielding masks 242,
A panoramic spring 244, which is an elastic member that elastically couples the light-shielding mask, is provided between base ends of the light-shielding mask 243. In the present embodiment, the panoramic spring 244 urges the light-shielding masks 242 and 243 in a direction to approach each other, and the arm portion 24 of the first panoramic gear 240.
0a, a contact force to the cam gear 222 is generated.

The PN detection switch SW245 is fixed to a base plate (not shown), and the contact piece is in contact with the second cam 222b of the cam gear 222. And the cam gear 2
With the rotation of 22, the PN detection switch SW245 is turned on / off.

The date holder 246 is fixed to the upper light shielding mask 243, and includes a date lens 248 and a light emitting LED.
The upper light-shielding mask 243 is integrally supported by the upper light-shielding mask 243. Further, light-shielding projections 246a and 246b are provided at the rear end, and when shooting with a wider screen size (normal screen size), the hole 4e of the main body is shielded with 246b when shooting, and the film is exposed to harmful light. Is to be prevented. on the other hand,
At the time of photographing with a smaller screen size (panoramic screen size), 4d is shielded from light by 246a, and similarly, exposure of the film due to harmful light is prevented.

The light emitting LED 247 is supported by the date holder 246, and is a light emitting element for imprinting data on a film. The date lens 248 is supported by the date holder 246, and is a lens for forming an image of the light emitted by the light emitting LED 247 on a film. Further, a film photo reflector 249 (hereinafter abbreviated as film PR 249) is provided at a position facing the perforation hole of the film, reads the movement of the perforation hole, and generates and outputs a pulse signal. I have.

The main body 4 has a photographing opening 4c for exposing the film 13; a hole 4d for imprinting a date when the screen size is in a standard state; Sometimes has a hole 4e for imprinting a date.

According to the present embodiment, one operation of the zooming operation, the film winding operation, the film rewinding operation, and the photographing screen size switching operation can be performed by one motor. The operation will be described below.

First, the zooming operation will be described with reference to FIG. FIG. 3 is a plan view showing the main gear train when the zooming operation is possible. As shown in FIG. 3, zooming is possible when the planetary gear 203 is engaged with the first zoom gear 209. At this time, by energizing the main body drive motor 201 and rotating it,
The first zoom gear 209 to the fifth zoom gear 227 rotate to rotate the rotating frame 51 and the zoom PI gear 212 to detect the amount of rotation of the rotating frame 51. As shown in FIG. 1, a zoom encoder pattern sheet 76 is attached to the rotating frame 51, and a zoom photo reflector 139 (hereinafter abbreviated as a zoom PR 139) is provided at a position facing the zoom encoder pattern sheet 76. Thus, the reference rotation position of the rotation frame 51 is detected, and a fine rotation amount is detected based on the output from the zoom PI 213.

When the main body drive motor 201 rotates in the CW direction, the lens is moved from the retracted state to the wide angle state and zooms to the telephoto side, and when rotated in the CCW direction, zooms to the wide angle side. The collapsing operation of the lens frame is performed in the final area. The zoom encoder pattern sheet 76 is provided so that the output of the zoom PR 139 changes as follows. In other words, the level from the collapsed area to the position just before the wide end is the "L" level, the level from the wide end position to the position just before the tele end is "H" level, and the tele end is the "L" level.

Next, the film winding operation will be described with reference to FIG. FIG. 4 is a plan view showing the main gear train when the film winding operation is possible. As shown in FIG. 4, the planetary gear 203 is
When it is meshed with 08, winding up is possible. At this time, when the main body drive motor 201 is energized and rotated in the CW direction, the winding planet gear 215
And the spool 217 is rotated. The moving amount of the film 13 wound by the spool 217 is detected by the film PR249.

Next, the film rewinding operation will be described with reference to FIG. FIG. 5 is a plan view showing the main gear train when the film rewind operation is possible. As shown in FIG. 5, the planetary gear 203 is
08, and the panorama carrier 221 is rotated to the first rewind gear 224 side by the rotation of the rotating frame 51, and the panorama planetary gear 220 is
When meshing with the rewind gear 224, rewinding is possible. In this embodiment, when retracting, the rotating frame 5
The first cam 51d rotates the projection 223b of the switching lever 223 to enable rewinding. Therefore, when the lens barrel is not at the retracted position, rewinding becomes impossible. Rewinding is performed when the main body drive motor 201 rotates in the CCW direction.

During the rewinding, the switching lever 223 rotates counterclockwise due to the reaction force when the panorama planetary gear 220 and the first rewinding gear 224 mesh with each other. The end 51d 'of the cam 51d is a surface perpendicular to the optical axis so that the rotating frame 51 does not rotate.

Next, the photographing screen size switching operation will be described with reference to FIG. FIG. 6 is a plan view showing the main gear train when the photographing screen size switching operation is possible. As shown in FIG. 6, when the planetary gear 203 is engaged with the hoisting sun gear 208 and the switching lever 223 is free with respect to the cam 51d of the rotating frame 51, the screen size can be switched. . Therefore, when the lens frame is collapsed, the screen size cannot be switched.

When the screen size is to be switched when the planetary gear 203 is engaged with the first zoom gear 209, first, the planetary gear 20
3 needs to be meshed with the hoisting sun gear 208. For this purpose, first, the coil 206a is energized,
The carrier 204 is unlocked, and then the main body drive motor 201 is energized to rotate in the CW direction.
In this case, if the main body drive motor 201 is continuously energized, the rotation direction of the main body drive motor 201 for rotating the carrier and the rotation direction of the main body drive motor 201 for winding the film will be described. Are the same, there is a problem that the spool rotates and the film is wound up. For example, when zooming and screen size switching are performed alternately, the film is wound up little by little even though the photographer has not taken any picture.

In order to solve this problem, in the present embodiment, the carrier 204 is wound around the sun gear 20.
When the carrier 204 is rotated to the side 8, the drive voltage of the main body drive motor 201 is lowered, and the control is performed so that the carrier 204 is rotated with a weak force that cannot wind the film. Further, in order to minimize the energizing time to the main body drive motor 201, a carrier PI 207 is provided as a photo interrupter for detecting the position of the carrier 204.

Immediately before the rotation of the carrier 204 toward the winding sun gear 208 is completed, the pulse output from the carrier PI 207 is changed. The main body drive motor 20 is controlled by stopping the energization of the motor.
1 can minimize the energizing time. With this method, the present embodiment solves the problem of film winding when switching the screen size.

Now, when the main body drive motor 201 is CCW
When rotated in the direction, the panoramic planetary gear 220 meshes with the cam gear 222 to rotate the cam gear 222. Hereinafter, a procedure for switching the screen size by rotating the cam gear 222 will be described.

The screen size switching mechanism is configured as shown in FIG. 7, and the rotation of the cam gear 222 causes the first panoramic gear 240 to rotate, and the lower light shielding mask 24 to rotate.
2. The screen size is switched by moving the upper light-shielding mask 243 in parallel with a fixed axis 239 (not shown) showing only the center line, and repeatedly entering and leaving the photographing opening 4c. Hereinafter, the relationship between the position of the cam gear 222 and the screen size will be described.

FIG. 8 is a plan view showing the positional relationship between the cam gear 222 and the arm 240a of the first panoramic gear 240 in the standard screen size according to the present embodiment. In the figure, reference numeral 222c indicates a range of the first cam 222a which is held at the standard screen size.
2d indicates a range held in the panoramic screen size.

In the state shown in FIG. 8, both the upper light-shielding mask 242 and the lower light-shielding mask 243 are retracted outside the photographing opening 4c to maintain the screen size in the standard state. At this time, the PN detection switch SW245
Is held off by the second cam 222b of the cam gear 222. Then, when the photographer operates an operation member (not shown) for photographing in the panoramic screen size, the power supply to the main body drive motor 201 is started, and the cam gear 2
22 starts rotating.

FIG. 9 is a plan view showing the state at the moment when the arm 240a of the first panoramic gear 240 rotates toward the center of the cam gear 222. At this time, the lower light-shielding mask 242 and the upper light-shielding mask 243 have both moved to the panorama screen size position, but the PN detection switch SW245 is still off.

FIG. 10 is a plan view showing a state where the cam gear 222 slightly rotates from the state shown in FIG. At this time, the PN detection switch SW245 is turned on, the state change of the PN detection switch SW245 is detected, the energization of the main body drive motor 201 is stopped, and the rotation of the cam gear 222 is stopped. Switching to the panoramic screen size is performed according to the procedure described above. Also, the movement of the light shielding mask and the PN detection switch SW245
By providing a time lag between the state change and the state change, the certainty of the switching of the light shielding mask is guaranteed.

The movement of the upper light shielding mask 243 to the panoramic screen size position causes the eyepiece zoom lens frame 1 to move.
67 moves, the field mask 167a and the eyepiece zoom lens 15 provided integrally with the 167 in the finder optical path.
7, the viewfinder changes to a shape similar to the screen size of the narrower view field, and the observation magnification changes, so that the photographer can recognize that the shooting mode has changed.

As for the dimensional accuracy of the screen size in the above-described operation, the screen size in the direction of the fixed axis 139 is the lower light-shielding mask 242 and the upper light-shielding mask 243.
Obtained by applying For this reason, an error due to a variation in the outer shape of another component is not affected, and an accurate screen size can be obtained. Therefore, at this time, the first cam 222a of the cam gear 222 and the arm 2 of the first panoramic gear 240
40a is not in contact.

Regarding the displacement of the screen with respect to the center of the screen during the operation described above, if the mechanism of the present embodiment is used, the first panoramic gear 240 and the second panoramic gear 241 are exactly mirrored with respect to the center of the screen. Since such a symmetrical movement is made, if the respective light shielding portions 242a and 243a of the lower light shielding mask 242 and the upper light shielding mask 243 are arranged symmetrically with respect to the center of the screen, these light shielding portions are positioned with respect to the center of the screen. Makes a symmetrical movement as if reflected in a mirror. Therefore, it is possible to obtain the center of the screen with high accuracy without using a structure for achieving center position accuracy.

Next, when the photographer operates an operation member (not shown) for switching to the standard screen size, the power supply to the main body drive motor 201 is started and the cam gear 222 starts rotating.

FIG. 11 shows the first panoramic gear 240
Arm 240a of the first cam 2 of the cam gear 222
FIG. 9 is a plan view showing a state where the cam gear 222 is turned in a direction away from the center of the cam gear 222 by 22a.

At this time, the lower light-shielding mask 242 and the upper light-shielding mask 243 have moved to the standard screen size position, but the PN detection switch SW245 is still on. When the cam gear 222 rotates slightly from this state, the PN detection switch SW245 changes to the off state while the respective masks remain at the standard screen size position. When this state change is detected, the energization of the main body drive motor 201 is stopped. Then, the rotation of the cam gear 222 is stopped. Accordingly, this returns to the state shown in FIG.

Switching to the standard screen size is executed according to the procedure described above. Further, since no time lag is provided between the movement of the light shielding mask and the change in the state of the PN detection switch SW245, the reliability of switching the light shielding mask is improved.

The movement of the upper light-shielding mask 243 to the standard screen size moves the eyepiece zoom lens frame 167, and the field-of-view mask portion 1 that has entered the finder optical path.
67a, since the variable power lens 157 is retracted from the optical path,
This allows the photographer to recognize that the photographing mode has changed.

Next, the data imprinting apparatus will be described. In the present embodiment, data is imprinted while the film is being fed.

The light emitting LED 247 can emit data of one character by one light emission, and emits light a plurality of times during film feeding to form character string data. The light emitted from the light-emitting LED 247 passes through the date lens 248 to form an image on a film, and prints data. The light emitting LED 247 and the date lens 248 are supported by a date holder 246, and the date holder 246 is fixed to the upper light shielding mask 243. For this reason, the date holder 246 is also moved by the movement of the upper light-shielding mask 243, so that the position where the data is imprinted is changed by switching the screen size, and the data is displayed on the photograph formed at the time of the panoramic screen size. Printed.

FIGS. 18 to 21 are explanatory views showing the film feed amount detecting means in this embodiment.

The body 4 has a patrone chamber 4a,
A spool chamber 4b is formed, and an exposure opening (aperture) 4c is formed between the cartridge chamber 4a and the spool chamber 4b. Also, holes 4d and 4e for imprinting data are formed, and data can be imprinted on the film through the holes.

The lens frame 2 is a taking lens 140.
And is fixed to the main body 4. The taking lens 140 is a photographic lens that forms a subject image on the film 13 and is provided in a lens frame unit. Further, the spool 217 is rotatably disposed at the center of the spool chamber 4b of the main body 4, and performs a winding operation of the film 13. Further, the patrone 12 is housed in the patrone chamber 4a of the main body 4, and a film 13 is wound inside. In the present embodiment, a 35 mm roll film is used as the film 13.

As shown in FIGS. 20 and 21, the roller 260 is formed by a columnar portion 260a which comes into contact with the film 13, and a polygonal column portion 260b having each surface formed by a uniform reflecting surface. In addition, a shaft (not shown) passes through the center,
60 is rotatably supported. The shaft (not shown) is fixed to the main body 4, and the roller 260
3 is driven to rotate.

The data imprint timing photoreflector 261 (hereinafter abbreviated as data PR261) is a polygonal column 260b formed by the reflection surface of the roller 260.
Is disposed at a position opposite to. And the roller 2
When the reflection surface of the polygonal column 260b and the data PR 261 are directed in parallel by the rotation of 60, the data PR
261 is reflected by the reflection surface and returns to the data PR 261 again. As a result, the data PR
An output pulse from the H.261 is generated.

The leaf spring 262 is fixed to the rear lid 25 and elastically contacts the cylindrical portion 260a of the roller 260.
The pressure plate 263 is attached to the rear lid 25 via a rolling spring 264 to prevent the film 13 from floating and enhance the flatness of the film 13. Rolling spring 2
Reference numeral 64 denotes an urging means for elastically urging the pressure plate 263 toward the main body 4 and is attached to the rear lid 25.

The light-emitting LED 248 is a light-emitting element having seven segments for imprinting data, and is capable of expressing data of one character by one light emission, and is supported by the date holder 246. . Also,
The date lens 247 is a lens for forming a character on the film 13 by emitting light from the light emitting LED 248, and is also supported by the date holder 246.

The date holder 246 supports the light emitting LED 248 and the date lens 247 as described above, and is fixed to the upper light shielding mask 242.
Further, the center of the hole 4d or 4e of the main body 4 and the light emission L
The ED 248 and the date lens 247 are vertically moved to a position where the centers thereof are coaxial.

In FIG. 18, reference numeral 11 denotes a main capacitor for a strobe, and reference numeral 10 denotes two power supply batteries. The film photo reflector 249 shown in FIG. 20 is provided at a position facing the perforation of the film 13, counts the number of perforations passed by the output pulse signal of the photo reflector 249, and performs one frame feed of the film. It has become. Further, reference numeral 21 denotes a front cover serving as an exterior part of the camera, and reference numeral 24 denotes a rear cover, which supports the back cover 25 rotatably.

The back cover 25 has a back cover shaft 2 to be described later at one end.
6, a hinge portion that is rotatably supported is formed, and the hinge portion is supported by the rear cover 24 around the hinge portion as a center of rotation.
It can be opened and closed. The leaf spring 262 and the pressure leaf spring 264 are attached. The back cover shaft 26
Is a shaft that rotatably supports the back cover 25 with respect to the rear cover 24. Reference numeral 27 denotes a side cover serving as an exterior part of the camera.
Indicates an operation button, and reference numeral 40 indicates a finder window.

Next, the operation of the roller 260 will be described.

As shown in FIG. 18, the spool 217 is rotated by the rotation of the main body drive motor 201, and when the film 13 is wound, the roller 260 is driven to rotate by the film 13. In order to improve the followability of the movement of the roller 260 and the film 13 during the rotation of the roller 260, it is necessary to increase the pressure contact force between the roller 260 and the film 13 to some extent. For this purpose, the leaf spring 262 elastically pressed against the roller 260 is attached to the back cover 25 as described above. This leaf spring 26
Since 2 is attached to the back cover 25, when the back cover 25 is opened, the pressure contact between the roller 260 and the leaf spring 262 is released. Here, when the patrone 12 is loaded and the back lid 25 is closed by aligning the leading end of the film 13 with an automatic loading index (not shown), the film 13 is sandwiched between the roller 260 and the leaf spring 262, and the elasticity of the leaf spring 262 is increased. Roller 26 by force
Contacted with 0.

The roller 260 is disposed in the film advancing direction near the entrance of the spool chamber 4b of the main body 4 and in a direction substantially parallel to the exposure opening 4c for the film 13 to be wound around the spool 217. To spool 217
By arranging the film 13 at a position that changes the direction, the force with which the film 13 contacts the roller 260 can be further increased.

In this embodiment, the roller 2
The followability of the film 60 to the movement of the film 13 is improved.

Next, the arrangement position of the roller 260 in a direction orthogonal to the film advancing direction will be described.

In the present embodiment, the arrangement position of the film contact portion 260a of the roller 260 is considered. That is, the film contact portion 260a is
If the roller 260 is disposed at a position in contact with the photographing screen, the film may be damaged, and if the roller 260 is disposed in contact with the perforation hole, the followability of the roller 260 to the movement of the film 13 is deteriorated. In the present embodiment, the film contact portion 260a of the roller 260 is disposed at a position where it contacts the outer edge of the perforation hole of the film 13. FIG. 20 shows an example in which the roller 260 is disposed at an optimum position.

A pulse signal is generated in the data PR 261 by the rotation of the roller 260. By counting the number of pulses, the film feed amount can be calculated. For example, the diameter of the roller 260 is set to be equal to the winding amount of one film when the roller 260 rotates five times, and
If it is a prism, the number of output pulses per frame is 5 (rotation)
X6 (square prism) = 30 (pulses). On the other hand, in the film feed detection system in which the perforation in the film 13 is directly read by a known photo reflector, one frame of the film is 8 perforations, so that eight pulses are output. Therefore, it is possible to more finely detect the film feeding amount by using the roller.

Further, in recent years, a photograph in which a date or the like is imprinted in a photograph print has become widespread. However, if the camera is equipped with a film feeding and detecting device as in the present embodiment, such a data copy is performed. The bunching device can be realized with a simple configuration.

In the data imprinting apparatus, the imprinting of the data is performed during the feeding of the film.
As shown in FIGS. 18 and 19, the LED 248 and the date lens 247 that emit light are supported by the date holder 246, and the date holder 246 is positioned with respect to the main body 4. A hole 4 d for imprinting data is formed in the main body 4, and the light emitted by the light-emitting LED 248 passes through the date lens 247 so that the film 1 can be used.
3, and the data is imprinted.

The light emitting LED 248 can expose data of one character per light emission. Therefore, when printing data, the light emitting LED 248 is used when the film 13 is fed and passes over the hole 4d of the main body 4.
Are sequentially emitted the required number of times, and data is imprinted.

The feeding speed of the film 13 is not always constant due to a change in the amount of pull-out force from the patrone 12, a variation in mechanical accuracy of a winding gear train or a winding motor (not shown), or abrasion. are doing. As a result, if the light emitting LED 248 is always lit at predetermined time intervals to perform data imprinting without detecting the feeding speed of the film 13, the character spacing of the character string imprinted on the film 13 is changed. Since the characters become wider or narrower or characters overlap, the feeding speed must be detected with high accuracy.

In this embodiment, the feeding speed is detected by measuring the interval of generation of the output pulse signal from the data PR261. Here, in the film feeding detection method for directly reading the known perforation hole, 1
Since the output is 8 pulses per frame, the resolution per frame is 8
Becomes On the other hand, if the roller described above is used, 3
Since a 0-pulse output signal is generated, the resolution per frame becomes 30, and the feed detecting device using the roller can detect the feeding speed finer, and the character spacing at the time of data imprinting can be reduced. It is possible to control the light emission interval so that the light emission is correctly aligned.

The polygonal column 260 of the roller 260
b need not be hexagonal as in the illustrated roller,
An arbitrary polygonal prism may be used in consideration of the character spacing and the like in imprinting data. In the present embodiment, the polygon is used for the data imprinting function, and the resolution is required to be fine.
b is a polygon having many sides.

FIGS. 22 and 23 show the difference in the character spacing due to the above-mentioned resolution. FIG. 22 shows an example in which one character is printed every time there is one output pulse signal from the data PR261 when the resolution is high. FIG. 23 shows an example in which the resolution is coarse and four characters are printed every time there is one output pulse signal from the data PR261.

In the example shown in FIG. 22, when one output pulse signal from data PR261 is generated, data is printed for one character. Even if the feeding speed of the film changes, the generation interval of the output pulse signal from the data PR 261 changes accordingly, so that the character interval of the data imprinted character string becomes constant.

In the example shown in FIG. 23, data PR2
Since the change of the feeding speed between the two output pulse signals from the output pulse signal 61 cannot be detected, the control means controls the feeding speed assuming that the feeding speed is constant. As a result, the character spacing of the character string varies. Would. The smaller the number of characters to be imprinted for each output pulse signal from the data PR261, the smaller the variation in character spacing can be. The greater the number of characters to be imprinted, the greater the variation in character spacing.

In this embodiment, the detection of one frame advance of the film is performed by detecting the movement of the perforation.
Since R249 was used, there was no accumulated error in the film feed amount on the 24th and 36th frames, and the method of reading the rotation of the roller 260 with high resolution was used for imprinting the date. A stable camera can be realized.

Next, a modified example of the film feed amount detecting mechanism in the above embodiment will be described.

If the diameter of the roller 260 is manufactured with high precision, there is almost no error in feeding one frame of the film. Therefore, the data PR26 for detecting the rotation of the roller 260 is used.
The film may be advanced by one frame only by one. In this case, since the film PR249 can be eliminated, a smaller camera can be realized (see FIG. 35). Further, in the case of a camera without a data imprinting function, the polygon part 260b of the roller 260 may be a polygon having a small number of sides, since the resolution may be coarse.

FIG. 24 is a block diagram showing a configuration of an electric circuit in the camera of this embodiment. Bipolar IC
Reference numeral 402 denotes a zoom PI 213, a zoom PR 139, a carrier PI 207, a film PR 249, and data PR 26.
A pulse signal is input from the input unit 1, and the waveform is shaped and output to the main CPU 401. Further, the main CPU 401
Plunger drive circuit 491, body drive motor drive circuit 4 based on each actuator drive signal from
92, the switching plunger driving circuit 493 drives the shutter plunger 99, the main body driving motor 201, and the switching plunger 206.

A main CPU 401 controls the driving of the entire camera, and includes a release switch (SW) 318 and a zoom tele switch (S) which are manual operation switches.
W) 319, a zoom wide switch (SW) 320, a panorama changeover switch (SW) 321, a forced rewind switch (SW) 322, a data imprint mode changeover switch (SW) 333, and a PN detection switch SW245. Detect the state of. Further, based on each of the input signals, the bipolar IC 402 and the date CP
An operation signal is output to U403 and the like. Further, the state of the power switch (SW) 317 is detected, and ON / OFF of the power of the entire camera is controlled.

The date CPU 403 stores the date, year, month, date,
The hour / minute data is always calculated.
The light emitting LED 2 based on the imprint signal from
47 is caused to emit light, and the data is printed on the film 13.

The shutter plunger 99 is driven by a shutter plunger drive circuit 491 so that the shutter opens when a voltage is applied and a current flows, and the shutter closes when the current is turned off.

Next, each operation of the present embodiment will be described with reference to the flowcharts shown in FIGS. 25 to 34 and FIG.

FIG. 25 is a flow chart showing the operation of extending the lens barrel from the collapsed state to the wide end. Power SW 317
Is switched from OFF to ON, the feeding operation to the wide end is started (step S1). First, it is determined whether or not the planetary gear 203 is connected to the lens frame driving side, that is, whether or not the WZ flag is 1 (step S).
2) If not connected, a subroutine (W to Z) for switching the carrier 204 to the lens frame driving side is executed (step S3). Thereafter, it is determined whether or not the wide end flag is 1 (step S4), and if it is 1, the process returns to the main routine (step S11). If the flag is not 1, the main body drive motor 201 is set to the zoom PR.
Rotate in the CW direction until 139 becomes “H” level (steps S5 and S6), and feed out to the wide end. Then, after the main body drive motor 201 is turned off (step S7), the wide end flag is changed from 0 to 1 (step S8), and the retracted flag is changed from 1 to 0 (step S9). Then, the counter of the zoom PI 213 is reset (step S10), and the process returns to the main routine (step S11).

FIG. 26 is a flowchart showing the operation when zooming to the tele side. When the zoom tele switch (SW) 319 is turned on, a tele-zooming operation is started (step S101). In this tele-zooming operation, zooming is performed to the tele side after the gear train is surely switched to the lens frame driving side similarly to the extending operation shown in FIG. 25, and when the tele end state is reached, the zooming ends there. Hereinafter, the details will be described.

First, it is determined whether or not the planetary gear 203 is connected to the lens frame driving side, that is, whether or not the WZ flag is 1 (step S102). A subroutine (W to Z) for switching to the frame drive side is executed (step S10)
3). Thereafter, it is determined whether or not the telephoto end flag is 1 (step S104), and if it is 1, the process returns to the main routine (step S112). If the flag is not 1, the main body drive motor 201 is rotated in the CW direction (step S105), the zoom PI 213 is monitored (step S106), the wide end flag is changed from 1 to 0 (step S107), and the zoom PR 139 is set. Is "H" level or not (step S108). And
Until the zoom PR 139 is at the “H” level and the zoom tele switch (SW) 319 is turned off (step S109), the process returns to step S105 to rotate the main body drive motor 201.

If the zoom tele switch (SW) 319 is turned off in step S109, and if the zoom PR 139 is not at the "H" level in step S108, the tele end flag is changed from 0 to 1 (step S109).
110), and turns off the main body drive motor 201 (step S
111), and returns to the main routine (step S
112).

FIG. 27 is a flowchart showing the operation when zooming to the wide side. When the zoom wide switch (SW) 320 is ON, a wide zooming operation is started (step S201). This zooming operation is similar to the extending operation shown in FIG. 25. When the gear train is reliably switched to the lens frame driving side, zooming is performed to the wide side, and when the zoom PI output is monitored, the zoom PI output is monitored. End zooming. Less than,
Details will be described.

First, it is determined whether or not the planetary gear 203 is connected to the lens frame driving side, that is, whether or not the WZ flag is 1 (step S202). A subroutine (W to Z) for switching to the frame driving side is executed (step S20)
3). Thereafter, it is determined whether or not the wide end flag is 1 (step S204), and if it is 1, the process returns to the main routine (step S212). If the flag is not 1, the main body drive motor 201 is rotated in the CCW direction (step S205), the zoom PI 213 is monitored (step S206), and the telescopic end flag is changed from 1 to 0 (step S207), and the zoom PI 213 is set. It is determined whether or not the end is the wide end based on the count number (step S).
208). When the zoom end is not at the wide end from the count number of the zoom PI 213 and the zoom wide switch (S
W) Until 320 is turned off (step S209), the process returns to step S205, and the main body drive motor 201 is rotated.

If the zoom wide switch (SW) 320 is turned off in step S209, or if the zoom end is wider than the count of the zoom PI 213 in step S208, the wide end flag is set from 0 to 1.
(Step S210), the main body drive motor 201 is turned off (step S211), and the process returns to the main routine (step S212).

FIG. 28 is a flowchart showing the operation when the lens barrel is driven from the photographing area to the collapsed state. The collapsing operation is started when the power switch (SW) 317 is switched from ON to OFF (step S301). Also, when the film is finished during a film winding operation to be described later and automatic rewinding is started (see FIG. 29), and when a forced rewinding switch (SW) 322 is turned on, a rewinding operation (FIG. 30). The collapsing operation is also performed in.

In this collapsing operation, the collapsing operation is performed after the gear train has been reliably switched to the lens frame driving side in the same manner as the extending operation to the wide end shown in FIG. 25, and the output of the zoom PI does not change. In this state, it is determined that the retracting operation is completed, and the retracting operation ends. Hereinafter, the details will be described.

First, it is determined whether or not the planetary gear 203 is connected to the lens frame driving side, that is, whether or not the WZ flag is 1 (step S302). A subroutine (W to Z) for switching to the frame driving side is executed (step S30)
3). Thereafter, it is determined whether or not the retracted flag is 1 (step S304), and if it is 1, the process returns to the main routine (step S311). If the flag is not 1, the main body drive motor 201 is rotated in the CCW direction until there is an output from the zoom PI 213 (step S30).
5, Step S306), and move to the retracted position. Thereafter, the main body drive motor 201 is turned off (step S3).
07), the collapsing flag is changed from 0 to 1 (step S30).
8) Then, the tele end flag is changed from 1 to 0 (step S309). Then, the wide end flag is changed from 1 to 0 (step S310), and the process returns to the main routine (step S311).

FIG. 29 is a flowchart showing the operation of winding one frame of film. FIG. 40 is a flowchart showing a subroutine "view mask display drive" for driving the display of the view mask in the viewfinder in response to the photographing operation in the flowchart showing the operation of winding one frame of the film.

When the winding operation shown in FIG. 29 is instructed, the shutter plunger 99 is turned on by the ON operation of the release switch (SW) 318 (step S1101) (step S1102), and the shutter is opened to expose the film. Is started (step S110)
3). Thereafter, the shutter plunger 99 is turned off (step S1104), the shutter is closed, and the exposure operation on the film is completed (step S1105). Then, immediately after the completion of the exposure operation on the film, the subroutine "view mask display drive" shown in FIG. 40 is executed (step S1106).

This subroutine "view mask display drive"
Is executed, the main body drive motor 201 is energized to move the cam gear 222 (see FIG. 7) one position from the current position.
As shown in FIG. 41, the field mask 167a is moved forward and backward in the finder optical path (at this time, the upper and lower light shielding masks 24 for switching the screen size are used).
3, 242 also reciprocates), thereby indicating that the release photographing exposure operation has been performed in the viewfinder.

More specifically, as shown in FIG. 40, a PN detection switch SW245 for detecting the state of the cam gear 222 in order to determine whether the currently set screen size is a standard screen size or a panoramic screen size. Is detected (step S1111). If the PN detection switch SW245 is turned off (standard screen size shooting setting state), the main body drive motor 201 is rotated in the CCW direction (step S1112). Then, once the PN detection switch SW245 is turned on, the rotation of the motor is continued until it is turned off again (steps S1113 and S1114). That is, the motor is rotated until the cam gear 222 makes one rotation.

When the PN detection switch SW245 is turned off in step S1114, a predetermined timer T2 is set (step S1115), and the main body drive motor 201 is stopped (step S1119).

On the other hand, in step S1111 described above,
When the PN detection switch SW245 is turned on (panorama screen size shooting setting state), the main body driving motor 201
Is rotated in the CCW direction (step S1116). Then, once the PN detection switch SW245 is turned off, the rotation of the motor is continued until it is turned on again (steps S1117 and S1118). That is, also in this case, the motor is rotated until the cam gear 222 makes one rotation. Thereafter, when the PN detection switch SW245 is turned on in step S1118, the main body drive motor 20
1 is stopped (step S1119).

After stopping the main body drive motor 201 in step S1119, the subroutine (FIG. 40)
And returns to the routine shown in FIG. 29 to start the winding operation (step S401). First, it is determined whether or not the planetary gear 203 is connected to the film driving side, that is, whether or not the WZ flag is 0 (step S402).
To switch to the film drive side (Z to
W) is executed (step S403), and then the winding operation is started.

Further, when it is determined that the mode is the data imprinting mode based on the state of the data imprinting mode changeover switch (SW) 323, the data imprinting operation is executed during the film winding (steps S404 to S40).
6). In addition, the film winding operation is performed using the film PR24.
9 is monitored, and the process is terminated when eight perforations of the film have passed or when the winding up to the last end of the film has been completed and a predetermined time set by the winding timer has elapsed (step S407 to step S407).
422).

FIG. 30 is a flowchart showing the film rewinding operation. This rewinding operation is performed when the film is wound up to the final end during the execution of the winding-up operation shown in FIG.
W) is started when 322 is turned on (step S5)
01).

In this rewinding operation, the panorama planetary gear 220 is engaged with the first rewinding gear 224 by first bringing the lens frame into the retracted state, and then the subroutine (Z to) for switching the carrier 204 to the film drive side is performed. W)
(Steps S502 to S50)
7) Then, a rewind operation is performed.

That is, until the output from the film PR 249 is no longer detected, the main body driving motor 201 is driven in the CCW mode.
(Step S508, Step S50)
9), T1 second is set in the timer (step S510),
The main body drive motor 201 is turned off (step S51).
1). Thereafter, the film frame counter is reset (step S512), and the process returns to the main routine (step S513).

FIG. 31 is a flowchart showing an operation for switching the photographing screen between the normal size and the panorama size (hereinafter, referred to as a panorama switching operation). This panorama switching operation is performed by a panorama switch (SW) 32
1 is started when the state changes (step S60)
1). This switching operation first confirms or executes that the lens frame has been extended to the photographable area, and then switches the carrier 204 to the film driving side (step S602).
Through step S606 and step S611). Thereafter, the screen size is changed by monitoring the change in the state of the PN detection switch SW245 (steps S607 to S615). The timer T2 seconds in step S614 is a timer that ensures that the cam gear 222 is rotated after the PN detection switch SW245 is switched from ON to OFF, and that the screen size is reliably switched to the normal size.

FIG. 32 is a flowchart showing an operation of rotating the carrier 204 to switch the planetary gear 203 from the film driving side to the lens frame driving side, and a subroutine W to Z (step S701).

First, the switching plunger 206 is turned on (step S702), and the main body drive motor 201 is rotated in the CW direction until the zoom PI 213 outputs (steps S703 and S704). Thereafter, the main body drive motor 201 is turned off (step S705), the switching plunger 206 is turned off (step S706), the WZ flag is changed from 0 to 1 (step S707), and the process returns (step S708).

FIG. 33 is a flowchart showing the operation of rotating the carrier 204 to switch the planetary gear 203 from the lens frame driving side to the film driving side, and the subroutine Z to W (step S801).

First, the switching plunger 206 is turned on (step S802). Here, if the driving force of the main body drive motor 201 at the time of switching is large, the spool 217 rotates at the time of completion of switching, and the film 13 is wound up.
The main body drive motor is operated at a predetermined low voltage at which the film 13 cannot be wound (step S8).
03). This is because a drive voltage setting signal is output from the main CPU 401 to the bipolar IC 402, and the bipolar IC 402 and the shutter plunger drive circuit 491
Performs the above operation. The switching operation is completed by monitoring that the output of carrier PI 207 is at the "L" level (step S804) to step S804.
808).

FIG. 34 is a flowchart showing the data imprinting operation. When this data imprinting subroutine is started (step S901), first, the film PR249 is output until the output of the data PR261 changes.
And monitor the output of data PR261 (step S
902 to step S904), and after the output of the data PR261 changes, the first digit of the data is printed on the film (step S905). Thereafter, the data PR is again input.
261 until the output of the film PR249 changes.
And monitor the output of data PR261 (step S
906 to step S908), and after the output of the data PR261 changes, the second digit of the data is printed on the film (step S909).
Repeat until the last digit of the data is printed (step S9
10 to step S913).

As described above, the data is sequentially imprinted on the film, and the data imprinting subroutine is terminated (step S914).

FIGS. 36 to 39 are explanatory views showing the light-shielding structure of the lens barrel unit, the opening of the main body and the light-shielding mask. The main body 4 is provided with two rows of continuous light-blocking ribs 4g that form a light-blocking structure with the lens barrel unit 2 at the upper and lower portions of the photographing opening 4c and at the side edges on the patrone chamber side. Also,
A light-shielding groove 4f that forms a light-shielding structure with the light-shielding masks 242 and 243 is formed at a side edge of the imaging opening 4c on the spool chamber side.

On the other hand, a light-shielding rib 2b, which forms a light-shielding structure with the main body 4, is disposed at an end of the lens frame unit 2 opposite to the light-shielding rib 4g of the photographing opening 4c. A light-shielding mask 24 is provided at an end of the lens barrel unit 2 facing the light-shielding groove 4f of the photographing opening 4c.
A light-shielding groove 2a forming a light-shielding structure with the light-shielding grooves 2 and 243 is formed.

The lower light-shielding mask 242 is located between the main body 4 and the lens frame unit 2, and is moved in parallel by the above-described driving mechanism. Further, a part of the photographing opening 4c is shielded by the light-shielding portion 242a. Further, light shielding ribs 242d and 242e are provided, and have a shape corresponding to the light shielding groove 4f and the light shielding groove 2a.

The upper light-shielding mask 243 is located between the main body 4 and the lens frame unit 2, and is moved in parallel by the above-mentioned driving mechanism. Further, a part of the photographing opening 4c is shielded by the light-shielding portion 243a. The movement thereof is such that when the lower light-shielding mask 242 covers the photographing opening 4c, the upper light-shielding mask 243 also covers the photographing opening 4c. When the lower light shielding mask 242 is retracted from the photographing opening 4c, the upper light shielding mask 243 is also moved to the photographing opening 4c.
c. Furthermore, the light shielding rib 2
43d and 243e are provided, and the light shielding groove 4f,
It has a shape corresponding to the light shielding groove 2a.

38 and 39, the light-shielding structure between the main body 4 and the lens barrel unit 2 is indicated by hatching.
5 shows a light-shielding structure portion range constituted by g and the light-shielding rib 2b.

Next, the operation of the light shielding structure of the lens frame unit, the opening of the main body, and the light shielding mask will be described.

As shown in FIGS. 36 and 37, the main body 4 and the lens frame unit 2 are engaged with each other by a light-shielding structure formed by light-shielding ribs 4g and 2b, and are mainly provided in a viewfinder provided on the exterior. Although the harmful light L entering the camera through holes such as windows and strobe windows is prevented from entering the photographing opening 4c, in the case of a camera whose screen size can be switched, the light shielding member is driven from the outside. There is a portion where a light shielding structure cannot be formed between the main body 4 and the lens frame unit 2. Referring to FIG. 38, the right end face remains as a part that cannot be formed into a light-shielding structure, and there is a risk that harmful light L may enter from this part and deteriorate image quality.

In this embodiment, as shown in FIG. 36, in order to prevent the harmful light L from entering, as shown in FIG.
By making the joint between the main body 4 and the lens frame unit 2 into a light-shielding structure, the harmful light L is prevented from entering, and a high-quality photograph can be obtained.

The lower and upper light shielding masks 24 are used.
Reference numerals 2 and 243 move to switch the photographing screen size, as shown in FIGS. 38 and 39, so as to cover a part of the photographing opening 4c. At this time, the two light-shielding masks 24 are arranged so that harmful light L from a direction orthogonal to the moving direction of the light-shielding masks 242 and 243 does not enter.
2 and 243, the light-shielding ribs 2 face each other.
42d, 242e, 243d and 243e are extended.

These light-shielding ribs 242d, 242e, 2
43d and 243e, the respective light shielding ribs overlap in the moving direction of the light shielding masks 242 and 243 even when a wide screen size is selected as shown in FIG.
Light is prevented from entering from a direction orthogonal to the moving direction of the light-shielding mask.

As described above, in this embodiment,
As shown in the flow charts of FIGS. 29 and 40, the timing of the display drive movement of the finder visual field mask is performed immediately after the exposure operation (see steps S1101 to S1105) is completed by opening and closing the shutter after the shutter release, as shown in the flowcharts of FIGS. Display drive movement. However, this movement timing is not limited to this,
Any timing may be used as long as the photographer can recognize that the exposure operation will be performed after the shutter is released, for example, after the shutter release and before the shutter is opened.

In the present embodiment, the photographing screen mask and the finder field mask are connected and driven by one drive motor. However, only the finder field mask is driven by the motor which is the drive source. The configuration can be easily implemented. With such a configuration, it is possible to drive the display of the field mask that is movable in the viewfinder during the exposure operation of opening the shutter after the shutter is released.

Further, in the present embodiment, the finder field mask is constituted by one vertically movable mask for switching between full size (standard size) and panoramic size. However, the present invention is not limited to this. As a configuration,
It goes without saying that the same effect can be obtained by driving these masks up and down.

In this embodiment, a camera which can be switched between two sizes, a full size (standard size) and a panoramic size, has been described. However, the idea of the present invention is applied to a camera using a so-called IX240 film cartridge. You can also. That is, like a camera using an IX240 film cartridge, H, C, P
Can be selectively switched between the three photographed print sizes, and the finder is adapted to a camera that switches the display of the visual field range with a plurality of masks within the visual field corresponding to these three sizes. At the time of the exposure operation, at least a part of the field mask can be reciprocated, for example, to notify the inside of the finder.

Further, the visual field mask according to the present embodiment described above is not limited to the above-described operation, but may be any one that can be recognized by the photographer in the viewfinder when moving and displaying in response to the release photographing operation. Various forms are conceivable. For example, instead of completely reciprocating from the first position (full size) to the second position (panorama size), it may be slightly moved between these two positions. Alternatively, the finder moves outside the range from the first position (full size) to the second position (panorama size), for example, so as to cover the entire viewfinder field for a moment, and then returns to the original position. You may do it. The driving may be performed not only once but also a plurality of times.

[Appendix] According to the embodiment of the present invention as described in detail above, the following configuration can be obtained. That is,
(1) a finder, a position where a first view range is displayed in the view field observed by the viewfinder and which is retractable, and a position where a second view range is displayed when the view is entered. And a field mask display drive for moving the field mask between a position for displaying the first field of view and a position for displaying the second field of view in response to a release shooting operation. Means, and a camera.

(2) A finder and a field of view which is provided so as to be able to advance and retreat within the field of view observed by the finder, and which can move to a position for displaying a first field of view and a position for displaying a second field of view. A mask, and a field mask display driving means for moving the field mask between a position displaying the first field of view and a position displaying the second field of view in response to a release photographing operation. Camera.

(3) A viewfinder is provided for displaying a photographing range within the field of view observed by the viewfinder, and displays a first position for displaying the first field of view and a second field of view. A field mask movably supported at a second position, a drive source for moving and driving the field mask, and the drive source moving the field mask to the first position and the second position in response to a switching operation signal. A field-of-view switching means for selectively switching to the position No. 2 to change the field of view; and the field-of-view mask switched by the field-of-view switching means, at least by the driving source according to a release photographing operation. A camera comprising: a visual field mask display driving means for moving between the first position and the second position.

(4) In a camera capable of changing the photographing screen size by changing the photographing screen size by covering the aperture opening provided in the camera body, the camera moves to the first screen position and the second screen position. A photographing screen size defining member for regulating at least two selected photographing screen sizes, and a first member for displaying a photographing range within a visual field observed by a finder, and displaying a first visual field range.
, A field mask movable to a second position for displaying a second field range, a driving source for moving and driving the imaging screen size defining member and the field mask, and a switching operation signal, A photographing visual field range switching means for selectively switching the photographing screen size defining member and the visual field mask between the first position and the second position; and the visual field mask switched by the photographing visual field range switching means.
A camera comprising: a field mask display driving means for moving at least between the first position and the second position in response to a release photographing operation.

(5) In the above (4), further, the visual field mask is connected so as to interlock with the movement of the photographing screen size defining member, and the driving source drives the visual field mask through the photographing screen size defining member. The field-of-view mask display driving means is provided with the interlock mechanism via the imaging screen size defining member driven by the driving source, when the release operation is not being performed by the shutter opening / closing operation during exposure. Activate

(6) The above (1), (2), (3),
In (4), according to the release shooting operation,
This is after the start of the release operation, but before the start and end of the exposure operation and before the start of the next film winding and feeding.

(7) The above (1), (2), (3),
In (4), when the visual field mask is at the first position before the driving, the visual field mask display driving unit returns the first position after driving the visual field mask to the second position. Drive.

(8) The above (1), (2), (3),
In (4), the visual field mask display driving unit moves and drives the visual field mask at least temporarily to an area other than the area between the first position and the second position.

(9) The above (1), (2), (3),
In (4), the visual field mask display driving means moves and drives the visual field mask from the first position or the second position to a position at least temporarily covering substantially all of the viewfinder.

[0156]

As described above, according to the present invention, the view range switching mechanism is also used for displaying the release photographing operation. It is possible to provide a camera capable of displaying a confirmation of a release shooting operation.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a main part of a camera capable of switching a photographing screen size according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the camera of the embodiment.

FIG. 3 is a plan view showing a main gear train when a zooming operation is possible in the camera of the embodiment.

FIG. 4 is a plan view showing a main gear train when a film winding operation is possible in the camera of the embodiment.

FIG. 5 is a plan view showing a main gear train when a film rewinding operation is possible in the camera of the embodiment.

FIG. 6 is a plan view showing a main gear train of the camera according to the embodiment when a photographing screen size switching operation is possible.

FIG. 7 is a perspective view showing the entire panorama switching mechanism in the camera of the embodiment.

FIG. 8 is a plan view showing a positional relationship between the cam gear 222 and the arm 240a of the first panoramic gear 240 when the camera has a standard screen size in the camera of the embodiment.

FIG. 9 is a plan view showing a state at the moment when the arm 240a of the first panoramic gear 240 rotates toward the center of the cam gear 222 in the camera of the embodiment.

FIG. 10 is a plan view showing a state in which the cam gear 222 slightly rotates from the state shown in FIG. 9 in the camera of the embodiment.

FIG. 11 is a plan view showing a state where the arm 240a of the first panoramic gear 240 is rotated by the first cam 222a of the cam gear 222 in a direction away from the center of the cam gear 222 in the camera of the embodiment. It is.

FIG. 12 is a front view of a principal part showing a panorama switching mechanism in a state where a wide photographing screen size is selected in the camera of the embodiment.

FIG. 13 is a front view of a principal part showing a panorama switching mechanism in a state where a narrow photographing screen size is selected in the camera of the embodiment.

FIG. 14 is a main part side view showing the panorama switching mechanism in a state where a wide photographing screen size is selected in the camera of the embodiment.

FIG. 15 is a side view of a principal part showing a panorama switching mechanism in a state where a narrow photographing screen size is selected in the camera of the embodiment.

FIG. 16 is a side view of a main part of the camera according to the embodiment, showing a panorama switching mechanism in a state in which a wide photographing screen size is selected, viewed from a direction opposite to FIG. 14;

FIG. 17 is a side view of a main part of the camera of the embodiment, showing a panorama switching mechanism in a state in which a narrow photographing screen size is selected, viewed from a direction opposite to FIG. 15;

FIG. 18 is a sectional view showing a main part of the camera according to the embodiment.

FIG. 19 is a view showing a roller 260 in the camera according to the embodiment.
It is a principal part expanded sectional view of a vicinity.

FIG. 20 is a rear view of the camera according to the embodiment, showing a back cover in an open state.

FIG. 21 is a diagram illustrating a roller 260 in the camera according to the embodiment.
FIG. 4 is an enlarged perspective view of FIG.

FIG. 22 is a diagram showing a timing chart for explaining the imprinting of data and an example of imprinting characters when the detection resolution is precise in the camera of the embodiment.

FIG. 23 is a diagram showing a timing chart for explaining imprinting of data and an example of imprinted characters when the detection resolution is low in the camera of the embodiment.

FIG. 24 is a block diagram showing a configuration of an electric circuit in the camera of the embodiment.

FIG. 25 is a flowchart showing the operation of the camera according to the embodiment for extending the lens barrel from the collapsed state to the wide end.

FIG. 26 is a flowchart showing an operation when zooming to the tele side in the camera of the embodiment.

FIG. 27 is a flowchart showing an operation when zooming to the wide side in the camera of the embodiment.

FIG. 28 is a flowchart showing the operation of the camera of the embodiment when the mirror frame is driven from the shooting area to the collapsed state.

FIG. 29 is a flowchart showing an operation of winding up one frame of film in the camera of the embodiment.

FIG. 30 is a flowchart showing a film rewinding operation in the camera of the embodiment.

FIG. 31 is a flowchart showing an operation of switching a shooting screen between a normal size and a panorama size in the camera of the embodiment.

FIG. 32 shows a carrier 2 in the camera of the embodiment.
04 to rotate the planetary gear 203 from the film driving side to the lens frame driving side, the subroutine W to
6 is a flowchart showing Z.

FIG. 33 shows a carrier 2 in the camera according to the embodiment.
04 to rotate the planetary gear 203 from the lens frame drive side to the film drive side, subroutine Z to
5 is a flowchart showing W.

FIG. 34 is a flowchart showing a data imprinting operation in the camera of the embodiment.

FIG. 35 is a rear view showing a modification of the film feeding amount detection mechanism.

FIG. 36 is a transverse cross-sectional view near the center of the camera, showing a light-shielding structure of the lens barrel unit, the main body opening, and the light-shielding mask in the embodiment.

FIG. 37 is a vertical cross-sectional view near the center of the camera, showing a light-shielding structure of the lens barrel unit, the main body opening, and the light-shielding mask in the embodiment.

FIG. 38 is a layout diagram showing a light-shielding structure of a lens barrel unit, a main body opening, and a light-shielding mask when a wide shooting screen size is selected in the embodiment.

FIG. 39 is a layout diagram showing a light-shielding structure of a lens barrel unit, a main body opening, and a light-shielding mask when a narrow shooting screen size is selected in the embodiment.

FIG. 40 is a flowchart showing a subroutine “view mask display driving” for driving the display of the view mask in the finder in response to the photographing operation in the operation of winding one frame of the film in the embodiment.

FIG. 41 is an explanatory diagram showing a state when a field mask is driven to be displayed in a finder in response to a photographing operation in the embodiment.

[Explanation of symbols]

 240 ... first panoramic gear 241 ... second panoramic gear 242 ... lower light shielding mask 243 ... upper light shielding mask 245 ... PN detection switch SW 222 ... cam gear 13 ... film 51 ... rotating frame 201 ... body drive motor 202 ... sun gear 203 ... Planetary gear 204 Carrier 206 Switching plunger 208 Winding sun gear 215 Winding planetary gear 217 Spool 219 Panoramic sun gear 220 Panoramic planetary gear 209 First zoom gear 210 Second zoom gear 225 Third zoom gear 226 4 zoom gear 227 ... fifth zoom gear 223 ... switching lever

Claims (3)

[Claims] 1. A finder, a field mask provided in a field of view observed by the finder, and movable to a position for displaying a first field of view and a position for displaying a second field of view, and a release. A camera comprising: a visual field mask display driving means for moving the visual field mask in accordance with a photographing operation. 2. A finder, a first position for displaying a photographing range within a field of view observed by the finder, a first position for displaying a first field of view, and a second position for displaying a second field of view. A field-of-view mask movable to a second position; field-of-view range switching means for selectively switching the field-of-view mask between the first position and the second position in response to a switching operation signal; A field mask display driving means for moving the field mask switched by means between at least the first position and the second position in accordance with a release photographing operation. Camera. 3. A camera capable of changing a shooting screen size by changing an imaging screen size by covering an aperture opening provided in a camera body, wherein the camera moves to a first screen position and a second screen position, A photographing screen size defining member that defines at least two selected photographing screen sizes; a first position that is provided for displaying a photographing range within a field of view observed by a finder, and that displays a first field of view; A field-of-view mask movable to a second position for displaying a second field-of-view range, a driving source for moving and driving the radiographic screen size defining member and the field-of-view mask, a radiographic screen size in response to a switching operation signal Photographing visual field range switching means for selectively switching the defining member and the visual field mask between the first position and the second position; and switching by the photographing visual field range switching means. Is the field mask is, according to the release photographing operation, a camera, characterized by comprising a field mask display drive means for moving at least between the first position and the second position.