JPH04112251U - camera - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a camera that can reliably perform panoramic photography even though it has a simple configuration. [Structure] The present invention includes a photographic optical system that forms an image of light transmitted through a photographic lens on a film, and a forced exposure means that forcibly exposes a specific portion of a film frame formed by this photographic optical system. It is equipped with the following.

Description

[Detailed explanation of the idea]

0001

【Technical field】

The present invention relates to a camera having functions suitable for use in panoramic photography.

0002

[Prior art and its problems]

Panoramic shooting is a method of shooting horizontally It refers to the photographic printing technique used to obtain printed photographs. To prevent this fixed width from top to bottom from being used for drawing. Therefore, a certain width above and below the film frame is usually shielded from light.

0003 By the way, this light shielding device is especially useful when switching the shooting mode. This dual-purpose camera is capable of llama photography and has a complex configuration. child Therefore, the number of manufacturing steps is large, making it difficult to avoid increased costs.

0004

[Purpose of invention]

This invention was made in view of the above-mentioned conventional problems, and it has been developed from a simple configuration. Providing a camera that can reliably take panoramic shots even though it is The purpose is to

[0005]

[Summary of the idea]

This invention does not expose the surroundings (top and bottom) of the panoramic photo frame at all. An image exists in both cases of composing with 100% exposure and composing with full exposure. It was completed by focusing on the fact that they are the same in some respects.

[0006] Therefore, the present invention is a camera that focuses light transmitted through a photographic lens on a film. A shadow optical system and a specific part of the film photographing frame formed by this photographing optical system, It is characterized in that it includes forced exposure means for forcibly applying exposure.

[0007]

[Example of idea] A first embodiment of a camera to which the present invention is applied will be described below with reference to the drawings. Figure 1 8 shows that when shooting panoramas, the outside of the panoramic shooting area on the film surface is Either expose the camera to a specific exposure, or add identification information to the exposed area to indicate that it was panoramic photography. , shows an example in which the image is formed outside the panoramic shooting area.

[0008] As shown in FIG. 5, the camera 21 is mounted directly above the zoom lens system 22. A finder system 23 is provided. The camera 21 has a mode as shown in detail in FIG. A mode changeover switch 24 is provided. This mode changeover switch 24 is a slide switch. The button 24a turns the power off, panoramic shooting mode PANORAMA, and zoom. This is for selecting the macro shooting mode ZOOM and the macro shooting mode MACRO. Ru.

[0009] FIG. 7 shows an example of the finder field of view obtained by the zoom finder system 23. It is. In this example, the focal length of the zoom photographing lens system 22 is 28 mm (WIDE). ) to 70mm (TELE), and switches to panoramic shooting mode at the wide end. You can switch to macro photography mode at the telephoto end. TELE to WID In E, the viewfinder field of view 52 does not change, and in MACRO, parallax is corrected. The macro finder field of view 52M moves downward, and the panorama In accordance with the aspect ratio of llama photography, the panoramic finder field of view 52P becomes horizontally long. power supply When set to OFF, the horizontally elongated panoramic viewfinder field of view 52P remains unchanged. It will be done. In this way, the viewfinder field of view is changed to a panoramic viewfinder field of view. In addition to limiting the field of view to It is also possible to draw a frame line and set the panoramic viewfinder field of view within this frame line, but this is not possible in this book. The composition of the idea does not matter.

0010 As shown in FIG. 1, the camera 21 includes a film cartridge chamber 27 and a film cartridge chamber 27. A spool chamber 28 for winding is formed at the top and bottom of the back of the photographing aperture 25. Each of these has a well-known inner rail 65 and outer rail 66 formed therein. Inner rail 6 A sprocket 67 is disposed between the outer rail 66 and the sprocket 5. The teeth 67a (FIG. 4) of the cut 67 mesh with the perforations P of the film F. . On the other hand, there is a gap between the edge of the photographing opening 25 on the spool chamber 28 side and the spool chamber 28. A pair of light emitters (forced exposure A light device) 68 is provided. This light emitter 68 is in a state where the film F is running. When the light is turned on in the state, forced exposure areas 69 shown in FIG. 2 are created above and below the panoramic shooting area PP. form.

[0011] As shown in FIG. 4, the sprocket 67 has a gear 71 on the same axis. 1 meshes with the gear 73 of the pulse generator 72. The gear 73 has multiple parts on its circumferential surface. A photocoupler 74 is provided across the gear 73. ing. The photocoupler 74 generates one pulse each time the slit 73a passes. This is a well-known thing. In this example, for each perforation P of film F, A slit 73a is provided to generate one pulse. As is well known, 35 One frame of mm film corresponds to 8 perforations, so Winding one frame generates 8 pulses.

0012 The photocoupler 74 is connected to a pulse counting circuit 75, and this pulse counting circuit 7 The output of 5 is sent to a motor control circuit 77 that controls the film winding motor 76 and It is applied to a light emission control circuit 78 that controls the light emission of the light device 68 .

[0013] With this device configured as described above, when shooting in panoramic shooting mode, the shooting frame is When removed, a forced exposure area 69 is formed outside the panoramic shooting area PP. . An example of its operation will be explained according to the flowchart in FIG.

[0014] After photographing in the panorama mode, when winding of the film is started, the pulse counting circuit 75 counts the number n of pulses generated by the pulse generator 72 (steps S1 and S2). As described above, one pulse is generated for each perforation P of the film F. When this count pulse n reaches a predetermined value X ₁ (for example, n=1 or 2), the light emitter 68 is turned on via the light emission control circuit 78 (steps S3 and S4). When the count pulse n reaches a predetermined value X ₂ (n=7 or 8 in the above example), the light emitter 68 is turned off (steps S5 and S6).

[0015] Of course, the number of count pulses in the above example is just an example, and there may be many more pulses per frame. It is also possible to more precisely control the light emission of the light emitter 68 by generating a pulse. Figure 2 is a schematic diagram in which forced exposure regions 69 are formed above and below a panoramic photographing region PP. By forming the forced exposure area 69 in this way, the normal photographic frame RP and the pano Panorama frames having llama shooting areas PP can be mixed.

[0016] Also, in panoramic shooting mode, even if you shoot at all the normal shooting frames, the , if you can specify the burned area for panoramic shooting, you can take horizontal photos by panoramic shooting. It is possible to obtain To do this, it is necessary to In response, a signal indicating that panoramic shooting was performed may be written. Second implementation The examples are based on this perspective. In other words, in this example, the pano Printing is done on the upper and lower parts of the film frame that are not used for printing. The light emitting device 68 is made smaller to form the identification information exposure area indicating that it was a no-rama photo shoot. Instead of a small point light source, this point light source can be used to illuminate the panoramic shooting area on the film frame. Linear identification information exposure portions 79 shown in FIG. 3 are formed at the upper and lower boundaries of the area.

[0017] In the examples shown in Figures 2 and 3, in the printing machine (laboratory), the The existence of the forced exposure area 69 or the identification information exposure area 79 is detected, and the panoramic Recognize that it is a photographic piece. Then, it was detected that it was a panorama shooting piece. Then, depending on the magnification ratio for panoramic photography, the range of panoramic photography area PP is printed on photographic paper. , prints a horizontal photo with a certain width removed from the top and bottom of the film frame.

[0018] In the first and second embodiments described above, the light emitter 68 was provided in the body 26, but this A third embodiment in which this is provided on the back cover 40 will be described with reference to FIG. In this example, the back cover A panoramic shooting area of the film F on the pressure plate 41 is placed on the pressure plate 41 provided on the inner surface of the film F. At least two pieces are placed perpendicularly to the film running direction, corresponding to the upper and lower boundaries of the area. An exposure hole 50 is formed, and a vertically elongated light source 68' is provided on the back surface of the pressure plate 41. ' is projected from two exposure holes 50. And from the start of film winding The light source 68' is turned on at a predetermined timing and turned off at a predetermined timing. this Accordingly, the identification information exposure portion 79 similar to that shown in FIG. 3 can be formed on the film F. Ru. Instead of a point light source consisting of the light source 68' and the exposure hole 50, the light emitter 68 is replaced by the pressure plate 4. 1, a forced exposure area 69 similar to that shown in FIG. 3 can be formed on the film F. Wear. In the figure, 43 is a film pressing roller, and 45 is a rear lid locking mechanism.

[0019] Note that in the first, second, and third embodiments described above, the forced exposure area 69 and the identification information are The information exposure section 79 was formed along the entire length of the panoramic shooting area PP, but this The forced exposure area 69 and the identification information exposure area 79 allow specific film frames to be photographed. It is only necessary to recognize that it is a panoramic shooting frame, but it does not necessarily need to be along the entire length. It is not necessary, and a configuration may be adopted in which it is formed in a part of the panoramic photographing area PP. In addition, in the first, second, and third embodiments described above, the image is emitted after shooting in panorama mode. The forced exposure area 69 or identification information is printed on the film F by turning on the light device 68 or light source 68'. Although the information exposure area 79 is formed, the forced exposure area 69 or the identification information exposure area 7 is formed before photographing. 9 may be formed.

[0020]

[Effect of the idea]

As described above, according to the present invention, it is possible to take panoramic shots, for example, with an extremely simple configuration. Since it is possible to obtain a suitable camera by using it for Accordingly, cost reduction can also be achieved.

[Brief explanation of drawings]

FIG. 1 is a rear view of a camera to which the present invention is applied, with the back cover removed.

FIG. 2 is a schematic diagram of a film according to the first embodiment obtained by forced exposure outside the photographing range.

FIG. 3 is a schematic diagram of a film according to a second embodiment obtained by forced exposure outside the photographing range.

FIG. 4 is a connection diagram showing main parts of a control system for forced exposure outside the photographing range.

FIG. 5 is a perspective view showing the entire camera to which the present invention is applied.

6 is a plan view of a mode conversion switch included in the camera of FIG. 5. FIG.

FIG. 7 is a front view showing how the visual field changes.

FIG. 8 is a flowchart illustrating an example of an operation during panoramic shooting with forced exposure outside the shooting range.

FIG. 9 is a diagram showing a third embodiment in which a forced exposure mechanism outside the photographing range is provided on the rear lid.

[Explanation of symbols]

21 Camera 22 Zoom shooting lens 23 Zoom finder system 24 Mode selection switch 25 Shooting aperture 27 Film cartridge room 28 Spool room 40 Rear lid 41 Pressure plate 65 Inner rail 66 Outer rail 67 Sprocket 68 Light emitter 68' point light source 69 Forced exposure area 72 Pulse generator 73 gear 73a slit 74 Photocoupler 75 Pulse counting circuit 76 Film winding motor 77 Motor control circuit 78 Light emission control circuit 79 Identification information exposure section F film P perforation PP panoramic shooting area

Claims (6)

[Scope of utility model registration request] 1. A photographic optical system that forms an image on a film of light transmitted through a photographic lens; and forced exposure means that forcibly exposes a specific portion of a film frame formed by the photographic optical system; A camera characterized by: 2. In claim 1, the forced exposure means is located between a photographing aperture that regulates the normal photographing range of the film and a spool chamber that winds the film, and is arranged so as to correspond to a portion of the top and bottom of the film. and a light emission control means for controlling the light emission of the light emission device, and the light emission control means causes the light emission device to emit light in accordance with the winding of the film, and exposes a specific upper and lower portion of the film photographing frame. camera. 3. The camera according to claim 1, wherein the camera has a normal shooting mode and a panoramic shooting mode. 4. The camera according to claim 3, wherein the forced exposure means is activated when photography is performed in panoramic photography mode. 5. The camera according to claim 4, wherein the forced exposure means completely exposes the top and bottom of the panoramic shooting area of the film. 6. The camera according to claim 4, wherein the forced exposure means forms a linear identification information exposure section in a portion above and below a panoramic shooting area of the film.