JPH07209724A - Camera - Google Patents

Abstract

PURPOSE:To make graipping easy even if the photographic optical systems of a long focal distance and a high magnifying power zoom are used in a camera miniaturized by using a compact film cartridge. CONSTITUTION:The compact film cartridge is loaded in a camera main body 1, the zoom lens barrels 2 and 3 of short and long focus sides having different focal distances are provided in the camera main body l and at the time of exposing a film surface, one of the zoom lens barrels 2 and 3 is selected to expose. In the camera main body 1, the objective optical system of the photographic optical system having the long focus distance of one of the zoom lens barrels 2 and 3 is disposed in a position away from a window for emitting electric flash light 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the arrangement of internal mechanisms in a camera.

[0002]

2. Description of the Related Art Conventionally, various inventions and ideas have been made in order to reduce the size and weight of a camera itself. For example, JP-A-5-165166 and JP-A-5-257234.
As described in the publication, by using a film cartridge smaller than the conventional film cartridge, a camera smaller than the conventional camera can be realized.

That is, the film patrone described in the above-mentioned JP-A-5-165166 and JP-A-5-257234 is the same size (φ as the conventional film patrone).
25mm, the area of one exposed part is about 860mm ² ) φ14 ~ 20mm, the area of one exposed part is about 350m
It is a small-sized film cartridge of about m ^{2, and by using} the small-sized film cartridge, the degree of freedom of layout inside the camera is increased and the overall size can be reduced.

[0004]

However, when the size of the entire camera is reduced, problems due to the size reduction occur. For example, when using a long focal length shooting optical system or a high magnification zoom shooting optical system as the shooting optical system,
The photographing optical system becomes larger than that of the camera body, which makes it difficult for the photographer to hold the camera.

Further, when the light emitting portion of the strobe device is arranged in a small camera body, the distance between the optical axis of the photographing optical system and the light emitting portion is small, so that the focal length of the photographing optical system is large, so-called red eye phenomenon. Is likely to occur.

An object of the present invention is to obtain a camera which is miniaturized by using a small film cartridge, and which is easy to grip even if a photographing optical system having a long focal length and a high magnification zoom is used. A second object of the present invention is to suppress the occurrence of the red eye phenomenon even when a strobe device is used in a small camera.

[0007]

To achieve the above object, in a camera according to a first aspect of the present invention, in a camera in which a small film cartridge is loaded in the camera body, the focal length of the camera body is A camera, wherein a plurality of different photographing optical systems are provided, and at the time of exposure on a film surface, at least one of the plurality of photographing optical systems is selected for exposure.

Further, in the camera according to the second aspect, the light emitting portion of the strobe device is arranged in the camera body, and at least the objective optical system of the photographing optical system having a large focal length among the plurality of photographing optical systems is arranged. It is characterized in that it is arranged at a position separated from the light emitting portion.

[0009]

That is, in the camera according to the first aspect of the present invention,
The camera body is provided with a plurality of photographing optical systems having different focal lengths, and at the time of exposure on the film surface, at least one of the plurality of photographing optical systems is selected for exposure.

Further, in the camera according to the second aspect, the light emitting portion of the strobe device is arranged in the camera body, and at least the objective optical system of the photographing optical system having a large focal length among the plurality of photographing optical systems emits the light. It is arranged at a position apart from the section.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 illustrates a perspective view of a camera according to a first embodiment of the present invention. As shown in FIG. 1, a short focus side zoom lens barrel 2 and a long focus side zoom lens barrel 3 are provided at predetermined positions near the center of the front surface of the camera body 1.
And are arranged side by side in parallel with the longitudinal direction of the plane.
Then, at a predetermined position above the plane where the short focus side zoom lens barrel 2 and the long focus side zoom lens barrel 3 are arranged, the objective lens 4 of the zoom finder and the autofocus light projecting lens 5, A light receiving lens 6 for autofocus, a strobe light emitting pad 7, and a photometric pad 11 are provided respectively. Further, a release button 8, a telescopic zoom button 9, and a wide zoom button 10 are arranged on the plane of the camera body 1.

Next, FIG. 2 shows a schematic view of the central cross section of the camera according to the first embodiment as viewed from above and will be described. As shown in FIG. 2, the short focus side zoom lens barrel 2 and the long focus side zoom lens barrel 3 are provided at the center inside the camera body 1.
Are arranged so as to sandwich the light shielding wall 12. Behind the short focus side zoom lens barrel 2 and the long focus side zoom lens barrel 3, an aperture 19 for the short focus side zoom lens barrel and an aperture 20 for the long focus side zoom lens barrel are provided, respectively. There is. In addition, inside the camera body 1, a small cartridge 15, a film winding chamber (spool chamber) 16, a main condenser 17 for stroboscopic light emission, and a battery 18 are arranged.

Each of the zoom lens barrels 2 and 3 is provided with a shutter mechanism necessary for exposure. In particular, the light-shielding cover 12 is a light-shielding member for preventing the light from entering the surrounding film or the like when the zoom lens barrels 2 and 3 are individually exposed.

In such a structure, when the photographer performs a zoom operation using the zoom buttons 9 and 10, the short focus side zoom lens barrel 2 and the long focus side zoom lens barrel 3 are continuously switched. Now, consider a case where the short focus side zoom lens barrel 2 corresponds to a focal length of 25 to 50 mm and the long focus side zoom lens barrel 3 corresponds to a focal length of 50 to 75 mm. In such a case, if the photographer continues to press the tele-side zoom button when the short focus side zoom lens barrel 2 of the camera is at the position of 35 mm, the lens barrel on the short focus side extends up to 50 mm, and After that, the lens barrel on the long focus side is extended up to 75 mm.

Next, FIG. 3 shows a schematic structure of a camera according to the first embodiment and will be described. In this camera,
Central processing unit (CPU) 5 that controls the components of the camera
1 is provided. The CPU 51 includes a photometry circuit 52, a distance measurement circuit 53, and a shutter control mechanism 5 having known configurations.
4 and the focus adjustment mechanism 55 are connected.

Further, the CPU 51 temporarily stores a display circuit 56 for displaying various kinds of information such as photographing information and date, a clock circuit 57 for forming date data, and an upper part for magnetic recording. Memory circuit (EEPRO
M), a photographing lens focal length switching mechanism 59, a focal length detecting mechanism 60, and a magnetic information control circuit 61 for recording / reproducing magnetic information.

A magnetic head 62 connected to the magnetic information control circuit 61 records data from the magnetic information recording / reproducing circuit 61 in a magnetic recording portion on a film 63 with a magnetic recording portion, or a magnetic recording portion on the film. It is for reading out the signal recorded in and supplying it to the magnetic information recording / reproducing circuit 61. The magnetic head 62 is provided with a gap tilt angle adjusting mechanism (not shown) for the magnetic head which will be described later. Then, the film feeding mechanism 66, based on the drive control signal from the drive circuit 65, the film 6 with the magnetic recording portion.
3 is for feeding.

Further, the CPU 51 is provided with a plurality of switches, of which a release switch (REL) 6
When 7 is turned on, the CPU 51 causes the exposure operation. The back cover detection switch (BK) 68 is a switch for detecting opening / closing of the back cover. Rewind switch (REW)
When the CPU 69 turns on, the CPU 51 causes the film to be rewound to the cartridge. Adjust switch (ADJ)
A switch 70 is operated when adjusting the azimuth of the magnetic head. The power switch (PW) 71 is a switch linked to the power supply of the camera, and the camera operates only when the switch is turned on. The tele side zoom switch (ZT) 72 is a switch for zooming the photographing focal length to the long focal side, and the wide side sum switch (ZW) 7
Reference numeral 3 is a switch for zooming the photographing focal length to the short focal length side.

Next, FIG. 4 shows a structure in which the film feeding mechanism is seen through from the rear and will be described. A pinion gear 23 is provided on the output shaft of the film winding / rewinding motor 21 (M1) provided in the main body of the camera, and the pinion gear 23 meshes with the sun gear 24. Further, the sun gear 24 meshes with a planetary gear 25, and the postal gear 25 is supported via a gear arm 26 so that the sun gear 24 is mounted around the rotation axis of the sun gear 24.

A winding spool 27 for winding the film is rotatably provided in the film winding chamber provided on the right side of the camera body in the publication.
A spool gear 27a that meshes with the planetary gear 25 when the planetary gear 25 revolves counterclockwise is integrally provided on the upper end surface of the take-up spool 27.

Further, a perforation locking claw 27b which engages with a perforation of a film, which will be described later, projects from the outer peripheral surface below the take-up spool 27. When the planetary gear 25 revolves clockwise, the planetary gear 2
The idle gear 37 is provided at a position where it meshes with the planetary gear 5, and the planetary gear 25 moves the idle gears 37, 36,
It is connected to a coupler gear 33 described later via 35 and 32.

On the left side from the rear of the camera body,
There is a storage room for storing cartridges.
In the information of this storage chamber, a coupler gear 33 having a coupler 34 having a tip protruding in a "-" shape is rotatably provided. The coupler 34 is fitted in a groove provided on the upper end surface of the feeding spool provided in the film cartridge 15 and is integrated with the feeding spool around the shaft.

A film feeding motor 22 is attached to the camera body.
(M2) is provided. A pinion gear 28 is provided on the output shaft of the film feeding motor 22.
The pinion gear 28 meshes with the sun gear 29. Further, the sun gear 29 meshes with a planetary gear 30, and the planetary gear 30 is supported via a gear arm 31 so as to be revolved around the rotation axis of the sun gear 29. Since the tension of the spring 41 acts on the gear arm 31, only when the film feeding motor 22 (M2) rotates counterclockwise, the planetary gear 30 and the idle gear 3 are rotated.
Two mesh. The photo-reflector 38 is provided to detect perforation of the film.

Hereinafter, with reference to the flowchart of FIG.
The operation of the camera according to the first embodiment having such a configuration will be described. First, when the power switch (PW) is turned on, the CPU 51 resets the power on. And I
Initialization of the / O port Initialization of the memory is executed (step S1), and then the on / off state of the BK switch 68 is determined (step S2). This BK switch 68 allows the user to load a film and close the back cover.
Switch from off to on. When this switching (rising) is detected (YES), the subroutine "idle feed" is executed (step S3).

In the subroutine "idle feed" of this step S3, the film 40 is pulled out from the cartridge 15,
The operation of winding a predetermined amount around the take-up spool 27 is executed.
However, when the switching of the BK switch is not detected (NO), the on / off state of the rewind switch (REW) 69 is determined (step S4).

Based on this determination, the rewind switch 69
When is on, the subroutine "rewind" is executed (step S5). This subroutine "rewind"
Then, the film 40 on the take-up spool 27 is rewound onto the cartridge 15.

Next, the zoom switch 72 on the tele side is turned on / off.
The off state is determined (step S6). And this Z
The T switch 72 is switched from off to on when the photographer presses the telephoto side zoom button 9 of the camera body 1. When this ON is detected, the taking lens zooms up (step S7).

Next, the on / off state of the wide side zoom switch 73 is determined (step S8). The ZW switch 73 is switched from off to on when the photographer presses the wide side zoom button 10 of the camera body 1. And
When this ON is detected, the taking lens 2 or 2 zooms down (step S9).

Next, when the PW switch 71 is on (YES), photometry is performed by the photometry circuit 52 (step S11). Based on the data from the photometric circuit 52, the shutter speed and the square value are calculated.

Next, the display circuit 56 is used to display the photometric data, the number of frames taken, etc. (step S12), and the on / off state of the release switch (REL) 67 is determined (step S13). Based on this determination, the release switch 67
When is OFF (NO), the process proceeds to step S2 and returns to the beginning of the main routine.

However, when the release switch 67 is turned on (YES), the focal length at the time of photographing is read from the focal length detecting mechanism (step S14), and of the two photographing lens barrels (2, 3), Either one of the taking lens barrels is used to perform exposure (step S1)
5).

Next, the aperture 1 on the side of the selected photographing lens
It is determined whether or not the frames of the film to be photographed are matched to 9 and 20, and the necessity of moving the film 40 is determined (step S16). When the film 40 needs to be moved (YES), the motors 21 and 22 are used to move the film to a desired position (step S17).

Further, the subject distance is calculated based on the data from the distance measuring circuit 53 (step S18). Then, the CPU 51 controls the focus adjusting mechanism 55 to focus on the subject. The shutter control mechanism 54 is controlled and exposed on the basis of the shutter speed and the square value calculated in step S11 (step S19).

After the exposure of the film 40 is completed, the film is wound up one frame (step S20). At the time of this winding, the film counter FCo is incremented and the photographing data is stored in the storage circuit 58.

Although the first embodiment of the present invention has been described above, in the normal case, the film 40 is set on the aperture 19 for the short focus side zoom lens barrel 2. And
When the zoom barrel 9 is zoomed by operating the zoom buttons 9 and 10 and the focal length at the time of shooting is used to shoot using the zoom lens barrel 2 on the short focus side, the film is used as it is. When shooting is performed using the long-focus side zoom lens barrel 3, the film frame to be shot is moved to the aperture 20 (rolled up) and then shot.

In the first embodiment, two systems of lenses, that is, a short focus side zoom lens and a long focus side zoom lens (each housed in the lens barrel 2 and 3) are used as a plurality of photographing optical systems. I am using this, for example, when using a short focus side zoom lens, a middle focus side zoom lens, a long focus side zoom lens and three systems of lenses, and also using a larger number of zoom lens systems. May be.

Further, as an improvement example of the first embodiment, in the normal case, the frame of the film to be photographed is changed to the aperture 19,
When set to an intermediate position of 20 and the focal length at the time of shooting is to use the zoom lens barrel 2 on the short focus side, the shooting frame of the film is moved to the position of the aperture 19 (rewinding) before shooting. A second embodiment is also conceivable.

As an improved example of the first embodiment, when the long focal length side zoom lens barrel 3 is used for photographing, the photographing frame of the film is moved to the position of the aperture 20 (rolled up) and then photographed. , Two zoom lens barrels 2, 3
A third embodiment is also conceivable, in which two frames can be simultaneously photographed by each shutter by using each of the shutters simultaneously, that is, tele and wide photographing can be performed at the same time.

Next, FIG. 6 shows a perspective view of a camera according to the fourth embodiment, and FIG. 7 shows a perspective view of the camera according to the fourth embodiment as seen through. As shown in FIG.
A short focus side zoom lens barrel 102 and a long focus side zoom lens barrel 103 are arranged side by side in the longitudinal direction of the surface at a predetermined position on the front surface of the camera body 101. And
On the front side of the camera body 101, at a predetermined position beside the position where the short focus side zoom lens barrel 102 and the long focus side zoom lens barrel 103 are arranged, a zoom finder objective mud 104 and an auto focus projection are provided. Optical lens 105,
A light receiving lens 106 for autofocus, a strobe light emitting mode 107, and a photometric mode 111 are provided. Further, on the plane of the camera body 101, a release button 108, a tele side sum button 109, and a wide side zoom button 110 are arranged.

Further, as shown in FIG. 7, the camera body 1
Inside 01, a zoom finder unit 114, a strobe unit 117, a photometric lens 118, a small-sized cartridge 120, a film winding chamber 121, a battery 122, a stroboscopic light emitting main capacitor 123, a motor 124,
Short focus side zoom lens barrel first mirror 125, long focus side zoom lens barrel first mirror 126, second mirror 1
27 and an aperture 128 are arranged respectively.

Next, FIG. 8 illustrates a camera according to the fourth embodiment by showing a schematic view of a central cross section as seen from above. In FIG. 8, when the short focus side zoom lens barrel 102 is used, the photographing light beam is reflected laterally by the mirror 125 and then downward by the mirror 127 to form an image on the aperture 128 part. Then, the long focus side zoom lens barrel 103
7 is used, the mirror 125 is retracted to the position indicated by the dotted line in FIG. 7, and the photographing light beam is reflected laterally by the mirror 126 and then downward by the mirror 127 to form an image on the aperture 128.

As described above, in the camera according to the fourth embodiment, unlike the first embodiment described above, the film may always set the shooting frame on the aperture 128.
The other points are the same as those in the first embodiment.

Although the embodiments of the present invention have been described above, the camera of the present invention can realize a well-balanced high-magnification zoom even in a camera using a small cartridge, and in that case, the FNo becomes dark. No camera can be provided. In addition, even with a high-powered photographic lens, the red-eye effect caused by strobe light can be reduced.

The present invention is not limited to the above embodiment, and it goes without saying that various improvements and modifications can be made. For example, in the above-described first to fourth embodiments, both of the two photographing optical units are described as zoom lenses,
This is not limited to the zoom lens, but may be a combination of single focal points or a combination of a single focal point and a sume lens. Furthermore, the number of lens barrels is not limited to two.

Further, according to the embodiment of the present invention as detailed above, the following constitution can be obtained. That is, (1) in a camera in which a small film cartridge is loaded in the camera body, a plurality of photographing optical systems having different focal lengths are provided in the camera body, and the plurality of photographing optical systems of the plurality of photographing optical systems are provided at the time of exposure on the film surface. A camera characterized by selecting one of them to perform exposure. (2) In a camera in which a small film cartridge is loaded in the camera body, the camera body is provided with a plurality of photographing optical systems having different focal lengths, and when the film surface is exposed, A camera characterized by selecting an arbitrary number of photographing optical systems and performing exposure at the same time.

[0046]

As described above in detail, in the camera of the present invention, in a camera using a small film cartridge, a plurality of photographing optical systems having different focal lengths are provided, and the plurality of photographing is performed at the time of exposure on the film surface. Since the exposure is performed by selecting at least one of the optical systems, it is possible to arrange a photographic optical system with a long focal length and a high magnification zoom in good balance even if the entire camera is downsized. Further, since the photographic optical system is divided into a plurality of parts, it is possible to cover the drawback that the aperture value (FNo) becomes large, which is peculiar to, for example, a high-magnification zoom optical system.

Further, in the second invention, when the light emitting portion of the strobe device is further arranged in the camera body, at least the objective optical system of the photographing optical system having a large focal length among the plurality of photographing optical systems, Since it is arranged at a position separated from the light emitting unit, it is possible to prevent the red-eye phenomenon that is likely to occur due to the proximity of the photographing optical system having a long focal length and the light emitting unit.

[Brief description of drawings]

FIG. 1 is a perspective view of a camera according to a first embodiment of the present invention.

FIG. 2 is a schematic view of a central cross section of the camera according to the first embodiment as viewed from above.

FIG. 3 is a diagram showing a schematic configuration of a camera according to a first embodiment.

FIG. 4 is a diagram showing a configuration of the film feeding mechanism seen through from the rear.

FIG. 5 is a flowchart for explaining the operation of the camera of the first embodiment.

FIG. 6 is a perspective view of a camera according to a fourth embodiment.

FIG. 7 is a perspective view of a camera according to a fourth embodiment seen through.

FIG. 8 is a schematic view of the camera according to the fourth embodiment with a central cross section viewed from above.

[Explanation of symbols]

1 ... Camera body, 2 ... Short focus side zoom lens barrel, 3 ...
Long focus side zoom lens barrel, 4 ... Zoom viewfinder objective lens, 5 ... Autofocus light emitting lens, 6 ... Autofocus light receiving lens, 7 ... Strobe light emitting lens,
8 ... Release button, 9 ... Tele side zoom button, 10 ... Wide side zoom button, 11 ... Metering pad, 12 ... Light shielding wall, 1
5 ... Small-sized cartridge, 16 ... Film winding room (spool room), 17 ... Main condenser for stroboscopic light emission, 18 ...
Battery, 19 ... Aperture for zoom lens barrel on short focus side,
20 ... Aperture for the long focus side zoom lens barrel.

Claims (2)

[Claims] 1. A camera in which a small film cartridge is loaded in the camera body, wherein the camera body is provided with a plurality of photographing optical systems having different focal lengths, and the plurality of photographing optical systems of the plurality of photographing optical systems are provided at the time of exposure on a film surface. A camera characterized by performing exposure by selecting at least one of them. 2. A light emitting section of a strobe device is further arranged in the camera body, and at least an objective optical system of a photographing optical system having a large focal length among the plurality of photographing optical systems is located at a position separated from the light emitting section. It has been arranged, 1
The camera described in.