JPH07234463A - Film unit with lens for multiocular stereoscopic photograph and processing method for stereoscopic photographic printing paper - Google Patents

Abstract

PURPOSE:To provide a film unit with a lens for a multiocular stereoscopic photograph constituted so as to view an excellent stereoscopic photographic image on a photographic printing paper by making the relation of the F-number of a photographic lens mounted on the film unit with the lens and a focal distance and the smallest guide number of a built-in stroboscopic unit clear and further, the method of processing a stereoscopic photographic printing paper capable of stably viewing the stereoscopic photographic image on the printing paper over a long period of time. CONSTITUTION:In the film unit with the lens for the multiocular stereoscopic photograph constituted so that a film is previously loaded, images A-C for composing a stereoscopic photograph on each film picture by each lens corresponding to it are photographed on the film pictures of plural frames arranged to be adjacent each other in the feeding direction of the film and then, the film after being photographed is successively rewound in a cartridge by the winding operation of a film winding knob, the relation of the F-number FNO of the lenses L1-L3 and the focal distance (f) satisfies FNO>=f<2>/120.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-lens stereoscopic photography lens having an exposure and film winding function and capable of immediately performing lenticular stereoscopic photography on an unexposed film loaded in advance. The present invention relates to an attached film unit and a processing method of stereoscopic photographic printing paper capable of seeing a lenticular type stereoscopic photo.

[0002]

2. Description of the Related Art In the case of a lenticular type stereoscopic photography method, a sheet of lenticular lenses in which thin, cambered lenses are arranged side by side is attached to a print so that a plurality of photographs with parallax can be seen little by little. It is made so that you can see three-dimensional photographs. By looking at these multiple photographs with a little parallax, it is possible to see a three-dimensional photograph with a natural three-dimensional effect that gradually changes depending on the viewing direction.

Most conventional cameras capable of performing lenticular stereoscopic photography are so-called lens shutter camera systems that use a 35 mm film (J135). Therefore, the film can be arbitrarily selected by the user. Was completed.

The film winding, rewinding, exposure to the film, photographing lens, focusing and the like are performed manually or automatically like the lens shutter camera, and the structure is also adopted in the lens shutter camera. The structure that had been used was almost followed.

Further, since the lenticular method is a three-dimensional photograph, there are three or more photographing frames for each photographing. Therefore, even if the screen size is half, it is horizontally long and becomes a large body as compared with a normal lens shutter camera. However, it cannot be said that it is lightweight from the above-mentioned structure.

As described above, in the conventional camera for taking a lenticular type three-dimensional photograph, the mechanism such as film winding, rewinding, exposure to film, taking lens and focusing can be either manual or automatic. Since the structure of the lens shutter camera is almost followed, the structure is complicated, and the cost is high.
Moreover, its size and weight had to be increased.

Therefore, the marketability is not widened due to the fact that it is a special camera for lenticular type stereoscopic photography, mass production cannot be established, and it cannot be obtained unless you go to a very large camera store. Therefore, even if a user tries to take a lenticular type stereoscopic picture, it is difficult to obtain a camera, and the price of the camera is expensive, so that it is not possible to easily take a stereoscopic picture.

Therefore, the applicant of the present invention has proposed a film unit with a lens, which is a clear-cutting camera capable of performing stereoscopic photography of a lenticular system, as disclosed in Japanese Patent Laid-Open No. 5-265106. The present proposal has achieved the object of providing a user with a lens-equipped film unit that is inexpensive, not too large, and that can easily and reliably take a lenticular-type three-dimensional photograph.

[0009]

However, as a result of further tests conducted by the inventor of the present application, the F number and the focus of the lens attached to the film unit with a lens capable of obtaining a better lenticular type stereoscopic image are obtained. We found the relationship between the distance and the guide number of the built-in flash unit. Further, they have found a processing method for processing a stereoscopic photographic printing paper in which a stereoscopic photographic image can be stably viewed for a long period of time.

That is, when viewing an image on a photographic paper of a lenticular type stereoscopic image, there is a relation between the F number of the lens to be photographed and the focal length, and a good stereoscopic image can be seen if this relation is found. That means. Then, it was found out that the size of the guide number of the built-in strobe at the time of stroboscopic photography should be at least a good stereoscopic photographic image in view of the cost in order to solve it.

Further, since the sheet of the lenticular lens is adhered to the emulsion layer side of the photographic paper during the development processing, the processing solution for the development permeates from the back side of the photographic paper. To develop the emulsion layer. Therefore, the mechanical strength of the photographic paper is not great, and there is a problem in terms of durability.

The present invention has been made to solve the above problems. That is, the relationship between the F number and the focal length of the taking lens attached to the film unit with lens,
A film unit with a multi-lens type stereoscopic photographic lens that makes it possible to see a good stereoscopic photographic image on the photographic paper by clarifying the minimum guide number of the built-in flash unit, and the stereoscopic photographic image on this photographic paper can be stably and long-term. It is an object of the present invention to provide a processing method for processing a three-dimensional photographic printing paper that can be seen throughout.

[0013]

Means for Solving the Problems The above-mentioned object is to mount each film screen on a film screen of a plurality of adjacent frames which are preliminarily loaded with a film and which are lined up in the film feeding direction, by means of respective lenses corresponding to the film screens. In the film unit with a lens for multi-lens stereoscopic photography, an image for making a three-dimensional photograph is photographed on, and the film finished photographing by the winding operation of the film winding knob is sequentially rewound into the patrone. The relationship between the F number F _{NO of the} lens and the focal length f is achieved by a film unit with a lens for multi-view stereoscopic photography characterized by satisfying the following.

[0014] F _NO ≧ f ^2/120 Further the object is pre-film is loaded, on the film screen of the plurality of frames of adjacent arranged in a film feeding direction, wherein the respective lenses corresponding to the respective film screen each Take an image to make a three-dimensional photograph on the film screen,
In a film unit with a lens for multi-lens stereoscopic photography that has a built-in strobe unit in which the film that has been filmed by the film winding knob is sequentially rewound into the cartridge, the guide number of the strobe unit is 16 ( It is achieved by a film unit with a multi-lens type stereoscopic photographic lens, characterized by having an ISO 400) or higher.

Further, the above-mentioned object is to pre-load a film,
On the film screens of a plurality of adjacent frames arranged in the film feeding direction, an image for making a three-dimensional photograph is taken on each film screen by each lens corresponding to each film screen, and the film winding knob is wound. The film that has been taken by the above operation is sequentially rewound into the cartridge, and the images taken by the film unit with the lens for multi-view stereoscopic photography are printed. This is achieved by a method for treating a three-dimensional photographic printing paper, characterized in that after drying, the back surface of the photographic printing paper is laminated.

[0016]

FIG. 1 shows the appearance of one embodiment of a film unit with a lens for multi-view stereoscopic photography (hereinafter also referred to as the present camera) of the present invention. As will be described in detail later, a half-size (17 x 24 mm) film unit with lens for three-lens stereoscopic photography using three taking lenses is shown.

The camera is provided with a pre-loaded ISO400 35mm film (J135), and the film that has been taken is taken into the patrone at the time of shooting and does not need to be rewound after the filming and enters the patrone. The film is sent to the photo lab as it is stored in the camera, the cartridge is taken out from the camera, the film is developed, and a special three-dimensional photograph is created on the photographic paper, which is a photosensitive material with a lenticular lens sheet attached. Print the image of the developed film with a printer for printing,
The print can be viewed immediately as a three-dimensional photograph.

The unexposed film used in this camera is loaded by the loading method described later, but in the loaded state, the film is wound from the cartridge to the spool.
It is designed to be rolled up in the Patrone each time it is taken. Therefore, in the photo lab, the film can be taken out of the camera in a bright room.

In the camera of this embodiment, taking out of the photographed film takes into consideration the reuse of the camera, so that the film is backed up by the user so that the quality is not maintained. It can be easily done only by bending a part of the lid, so it can be reused by checking the camera part, loading a new unexposed film and replacing the back lid on the manufacturer side. .

Particularly, in this embodiment, the cartridge loaded in the camera is a commonly used cartridge (JISK).
7528) can be designed and manufactured, or can be designed and manufactured so as to use a cartridge having a thin outer diameter different from that of the commonly used cartridge.

In the case of a cartridge having a small outer diameter, for example, a cartridge having an outer diameter of φ20.6 mm, the thickness of the camera can be suppressed to about 24 mm except for the lens barrel portion having the taking lens. It is possible to realize an ultra-thin compact camera.

The present camera is provided with a cardboard carton (paper cover) on the outer surface of which a product name, a simple usage method, etc. are displayed.

FIG. 2 is a development view showing the structure of the camera.

Reference numerals 10, 20 and 30 denote a camera body, a front cover and a back lid, which are main components of the camera, respectively, 40 denotes a strobe unit which is a built-in strobe light emitting device, and 50, 60 and 70 denote These are the film winding mechanism, the shutter charge mechanism, and the film counter mechanism.

When the camera body 10 is used alone, each member constituting the film winding mechanism 50, the shutter charge mechanism 60, and the film counter mechanism 70 is mounted, and the shutter case 11 for accommodating the shutter blades is mounted.

The shutter case 11 is fixed by engaging the claws 11A projecting on both sides with the locking portion 10A on the front surface of the camera body 10, and the shutter blades are linked to the shutter charge mechanism 60.

Further, in the three lens mounting recesses on the front surface of the shutter case 11, 12.3 lens for photographing with a single lens having a focal length f = 35 mm and an aperture of F10.5 are respectively dropped, and guide pins are provided. It is covered by a lens retainer 13 having a slit 13A engaging with 11B.

Here, the F number F of the photographing lens is used.
The relationship between _NO and the focal length f will be described.

In the camera of this embodiment, as described above, the screen frame, that is, the screen size is a half size (17 × 24 mm) using J135 film, the focal length is f = 35 mm, and the F number is 1.
It is a film unit with a lens for three-lens stereoscopic photography with a three-screen frame that uses three taking lenses of 0.5 single lens.

The print size when an image taken by this camera is printed as a three-dimensional photograph image is
It is 89 x 121 mm (E version). The lens may be a single plastic lens or a double lens.

FIG. 5 is a diagram showing images of three screen frames photographed by the camera.

In FIG. 5, three lenses L1, L2,
Images of A, B, and C are formed on the screen frame by L3. And since the focal length of the lens is 35 mm as described above, the screen frame of this camera is half size (17 ×
24 mm), so when converted to full size (24 x 36 mm), 35 x {(24 ² +36 ² ) ^1/2 / (17 ² +24 ² ) ^1/2 } = 51.5 ≒ 52, that is, half-size focal length 35 mm The full-size lens is equivalent to a lens with a focal length of 52 mm. At the focal length of this length, the image forming surface of the image may be considered to be a plane as shown in combination with the F number being 10.5. Therefore, the images A, B and C by the three lenses are in the same plane. They will be lined up on the straight line as shown. Therefore, the images A, B, and C have the same size, that is, the image magnification is the same, and the entire image is in focus, so that the three-dimensional photograph image formed by these three images A, B, and C is good. It becomes a three-dimensional photograph image of the focus.

In addition, the fact that the image forming surface of the image is a flat surface has the advantage that the film is easily transported, the film winding force is small, and the operability of the camera is improved.

As described above, the image forming surface of the image of the camera for forming the stereoscopic photograph image needs to be a flat surface, but the screen frame which is the image forming surface of the image is a flat surface and the focal length of the lens is as described above. On the contrary, in the case of a short lens, when considering a film unit with a lens for three-dimensional stereoscopic photography, the focus becomes extremely poor around the screen frame, and it cannot be an image for making a stereoscopic image.

Then, the inventors of the present application have conducted various examinations, and as a result, found that the F number F _NO of the lens for obtaining a good focus and the focal length f have the following relationship. It was

[0036] The use of the F number F _NO to the focal length _{f = 35mm F NO 9.0 9.5 10.0} 10.5 11.5 When the focus of × × × ○ ○ This represented as: F _NO ≧ f ^2/120 focal length f by the equation It was found that a stereoscopic photographic image with a good focus having a depth of field of 1 m or more and ∞ can be obtained. Taking into consideration the use of a film unit with a lens for stereoscopic photography, the focal length f is 33 in terms of ensuring the flatness of the image plane.
Must be mm or greater. The upper limit of the focal length f is preferably 40 mm or less from the viewpoint of suppressing the size of the camera. The focal length f of the lens is 33 mm or more and 40 mm or less, which is a good result.

With respect to the F number of the lens, the upper limit of the F number obtained by the above formula is the lower limit, and the upper limit of the range in which the exposure density of the film is not underexposed during normal outdoor shooting is 13.3 in the case of ISO400 film. Good results have been obtained below. In the case of ISO800 film, 19 or less is preferable.

The camera body 10 and the shutter case 11 described above
Are molded of a black matte self-lubricating plastic material having some elasticity, including the front cover 20 and the back cover 30 described above.

On the other hand, the strobe unit 40 is mounted and supported with reference to the guide pins 10B on the front surface of the camera body 10 and the holes 40A and 40B on the substrate which engage with one guide pin (not shown), respectively.

In the strobe unit 40, the upper and lower battery contact pieces 41, which are integrated with each other, are inserted into the upper and lower slit holes 10D of the camera body 10 and projected into the battery chamber on the rear surface of the camera body 10 to form an AA battery as a strobe charging power source. Hold a certain battery power source E.

The integrated main capacitor C is stored in a capacitor chamber formed under the shutter case 11.

The lens retainer 13 and the strobe unit 40 described above.
The fixing and integration of the above with the camera body 10 is completed by mounting the front cover 20 on the camera body 10.

Now, the guide number of the strobe unit will be described.

In this camera, the guide number is 16 (I
SO400) strobe unit is built in. In this camera of this embodiment, the F number of the lens is 10.5.
Therefore, 1.5m is the proper exposure distance.
However, the film loaded in this camera is a negative color film with a wide exposure latitude. Therefore, if you allow up to 1 step under, you can shoot up to 2.1 m, and if you allow up to 2 steps under, you can shoot up to 3 m. As described above, this camera is a film unit with a lens for stereoscopic photography, and most of the short-distance photographing range where the stereoscopic effect is easily produced can be covered by stroboscopic photography.

Since this camera is a half-size camera, if the conventional full-size strobe unit is used and the reflecting mirror is changed to the half-size, the brightness is doubled and the shooting distance becomes longer. It can be extended further.

The upper limit of the guide number of the flash unit of the camera of the present invention is preferably 31 (ISO400).
As mentioned above, this camera uses a lens with a maximum F number of 13.3, but the shooting distance in this case is
It is 2.3m and 4.6m when considering up to 2 steps under. Furthermore, the minimum F number calculated from the above formula is 9.1. With this F number lens, the shooting distance is 3.4 m, and 6.8 is considered up to 2 steps below.
m. As described above, this camera is a film unit with a lens for stereoscopic photography, and most of the short-distance photographing range where the stereoscopic effect is easily produced can be covered by stroboscopic photography.

As described above, in the film unit with a lens for stereoscopic photography according to the present invention, the guide number of the built-in strobe unit is preferably 16 (ISO400) or more and 31 (ISO400) or less.

The front cover 20 has a decorative cover 22 fixed in advance on its front surface before being mounted on the camera body 10.
The makeup cover 22 has a guide pin 22A and four nails 22 on the back.
B are projected, and each is a hole 20A on the front of the front cover 20.
And 4 are engaged and attached to the locking portions 20B.

The front cover 20 is provided with a hole 20C, a claw 20D and three engaging portions 20E on the back surface, and each of them is attached to a guide pin 10E, a nail 10F and a side engaging portion 10G on the entire surface of the camera body 10. It is attached by engaging.

By mounting the front cover 20 on the camera body 10, the lens retainer 13 and the strobe unit 40 are fixed to the camera body 10.

The camera body 10 with the front cover 20 attached
In the cartridge chamber and the scroll chamber (both not shown) formed on the back surface of the cartridge, the cartridge P1 and the spool S2 with the leading end of the unexposed film F locked are respectively loaded.

The other end of the film F is locked to the spool S1 in the cartridge P1. Even if the film in the cartridge is once wound up by the spool S2 after the film is loaded, the other end is locked to the spool S1. Therefore, each time shooting is completed, the film can be caught in the cartridge P1.

A back cover 30 is attached to the back surface of the camera body 10 in which the film F is loaded to keep the restriction of the position of the film F on the light-shielding focus surface.

The back cover 30 is provided with claws 30A and 30B on the front surface thereof and locking holes 30C and 30D on the side surfaces thereof.
When attaching to the camera, the nails 30A and 30B are the locking parts of the camera body 10.
Holes 30C and 30D and one hole (not shown) are fixed to 10H and 10J by engaging with nails 10K and 10L of the camera body 10 and one nail (not shown).

After the back cover 30 is mounted, a predetermined film winding operation is performed to set a photographable screen, and the carton shown in FIG. 1 is mounted to complete the process.

Next, details of the film winding mechanism 50, the shutter charge mechanism 60, and the film counter mechanism 70 will be described.

FIG. 3 is a perspective view of the above-mentioned respective mechanical parts as seen from the rear side of the camera, and FIG. 4 is a perspective view as seen from the side of inserting the film-wrapped cartridge and spool into the camera body. Is shown.

The camera body 10 has three half-size (17 x 24 mm) half-frame (17 x 24 mm) side-by-side left and right screen frames 16 arranged side by side in the same plane on both sides for film winding and film winding. A cartridge chamber 15A and a scroll chamber 15B are provided as two loading chambers for loading, and the J135 film F wound in the cartridge P1 which is the storage container shown in FIG. 4 is loaded therein.

As described above, the present camera is provided with the three half-size screen frames 16 arranged side by side in the left-right direction as described above, and is adapted to capture a lenticular-type stereoscopic photograph image.

In order to obtain a natural three-dimensional effect, it is preferable that the lenticular type stereoscopic photographic image is photographed on a large number of adjacent side-by-side horizontal (film feeding direction) screens, but the number of screens is large. Naturally, the lateral size of the camera becomes large. That is, the camera becomes large. Therefore, in the case of a camera that normally takes a stereoscopic photographic image of the lenticular system, a three-screen system or a four-screen system is adopted.

When a 35 mm film (J135) is used, the size of the screen frame so as not to cause a problem in the handling of the photo lab is a so-called full size (24 × 36 mm) screen and half size (17 ×). 24mm) screen. And
Of course, if you choose the full size screen size, the lateral size of the camera will also increase. Therefore, in order to make the camera compact, the present inventors chose a half-size screen size.

Therefore, in the present embodiment, the description has been given of the film unit with a lens having half size and three screen frames as described above, that is, the lens unit for three-lens stereoscopic photography. It is possible to use a film unit with a lens for multi-view stereoscopic photography, which has a screen frame of four or more in size and the number of screen frames. In this camera, the back cover opening / closing structure provided in a normal camera is greatly simplified to reduce the size and cost of the camera.

That is, the hinge portion and the tightening claw portion of the back lid opening and closing structure provided in a normal camera are omitted, and the equivalent to the hinge portion is used only once when taking out the patrone after photographing. A groove 32 is provided in the back cover 30 shown in FIG. 2 for bending and taking out, and as the parts corresponding to the tightening claw portions, the claws 10K and 10L of the camera body 10 and the back cover are described above.
The claws 30A and 30B of 30 are engaged with the holes 30C and 30D of the back cover 30 and the locking portions 10H and 10J of the camera body 10, so that the back cover 30 becomes the camera body.
It is designed to be fixed at 10.

The film F used in this camera of this embodiment is a commonly used patrone (JISK7528), a roll film J135 similar to a general camera, or a patrone having an outer diameter of 20.6 mm. J135 film and roll film with a slightly thin total thickness of 130-140 μm
The cartridge is used as a storage container in advance in a dark room or the like, and its end is fixed to the spool S1 of the cartridge P1 so that a predetermined number of frames can be photographed and the film is taken out from the film outlet of the cartridge P1 for a certain length. It is in a state. The film in this state will be loaded into the camera. The loading method will be described below.

As shown in FIG. 3, the cartridge is loaded into the cartridge chamber 15A so that the spool S1 (shown in FIG. 4) of the cartridge P1 is engaged with the fork 52 of the hoisting fork 52. On the other hand, the spool S2 is also inserted in the scroll chamber 15B. Then, in the present embodiment, the film F is pulled out until the tip of the film notch FN of the film F is aligned with the index 17A on the lower portion of the lower rail surface, and the tip of the film F is inserted into the slit SL of the spool S2 to form the film F. The perforation P is locked to the claw H. The film notch FN is designed to indicate the emulsion lot number of the film by means of several holes provided in the tongue portion at the tip of the film.

Next, the back cover 30 is covered and the cover is made light-tight.
Then, the main camera in this state is attached to the film winding device, and the entire film F (however, the other end is within the range where it does not separate from the spool S1 of the cartridge P1) is wound around the spool S2 of the scroll chamber 15B, and the film loading is completed. It will be. That is, by loading the film F in this way, the film F is sequentially rolled into the patrone P1 for each shooting, and after the predetermined number of shootings is completed, in this embodiment, two films, that is, six frames are taken. When the blank feed is performed, the leading end of the film F is not caught in the cartridge, and the photographed film portion is completely caught in the cartridge P1 while leaving a necessary length.
Therefore, this cartridge can be taken out from this camera in a bright room.

In the present camera, when the screen size of the photographic screen is half size (17 × 24 mm) as described above, the rail surface forming the photographic screen and the pressure plate surface for guiding the film to the rail surface are the film running surfaces. It is parallel to the direction and flat.

In the case of a camera, such as a film unit with a lens, which needs to be offered to the market at a low cost, the taking lens is also a single-lens lens as described above, and a plastic molded aspherical single-lens lens is generally used. Therefore, some spherical aberration remains, and the screen size is full size (24 x 36 m
In the case of the screen size of m), the rail surface has a convex curved surface at the center which is the optical axis of the lens in the longitudinal direction of the rail surface (the film feeding direction). The central part, which is the optical axis of, was a curved surface with a concave center.

However, as described above, when the screen size is half size (17 × 24 mm) and the focal length f of the lens is 33 mm or more, the bending of the image in the longitudinal direction of the rail surface due to spherical aberration becomes negligible. Therefore, even if the rail surface and the pressure plate surface are planes parallel to the film running direction, the problems of aberration and image distortion are eliminated.

The length of the film that should be fed by one winding is 1.5 times longer than usual in the three-lens type and twice as long in the four-lens type, so that the friction between the film and the rail surface is ridiculous. do not become. Therefore, in the present application, the fact that the rail surface and the pressure plate surface are parallel and flat with respect to the film traveling direction as described above means that the resistance against the film traveling is small and the hoisting load is lightened.
Then, the film travels linearly and in a planar manner, which has brought about an advantage that it is less likely to cause a scratch on the film.

Further, when the resin molding die for the camera body is made, it is not necessary to make the rail surface which requires precision to be a curved surface having a central convex for each frame in the lateral longitudinal direction, and a linear planar rail surface is obtained. By doing so, the manufacturing cost of the molding die can be significantly reduced. For the same reason, the pressure plate integrally formed with the back cover can also significantly reduce the manufacturing cost of the molding die like the rail surface.

Further, since the length of a plurality of frames exposed by one shot in the film running direction is long, it is possible to obtain a more stable spacing by making the spacing between the rail and the pressure plate uniform between planes.

The reduction in the manufacturing cost of these resin molding dies is naturally effective in reducing the manufacturing cost of the present camera, and the present camera can be provided at a low cost.

Next, the mechanism of the main body will be described with reference to FIG.

The camera body 10 includes a film winding mechanism 50 including a photographing lens, a shutter charging mechanism 60,
The main mechanism of the film counter mechanism 70 is incorporated therein.

First, the film winding mechanism and the shutter charging mechanism will be described.

Reference numeral 51 denotes a film winding knob, and the film F loaded as described above is wound by rotating the film winding knob 51 counterclockwise.

In this embodiment, the number of teeth of the sprocket gear of the feeding means for feeding the film is the same as the number of perforations of the photographing frame group fed for each photographing. It has become. In other words, in this camera, it is half size and has three screen frames.
Since the camera has 16, the gears of the sprocket 54 use sprocket gears having twelve teeth, which is the same as the number of perforations of the photographing frame group fed for each photographing. Therefore, a cam 55 coaxial with the 12-tooth sprocket gear 54 meshing with the perforation P of the film F and having a fan-shaped cam portion 55B at the lower portion
Is designed to rotate exactly once counterclockwise by winding the film.

That is, the film is wound up by taking the length of 12 perforations, which is the number of teeth of the sprocket gear, as the length for one photographing. As described above, the structure in which the sprocket gear of the film feeding means makes one revolution for each filming is a film winding mechanism,
The shutter charge mechanism, the film counter mechanism, etc. can be made into a simple structure, which is very effective for cost reduction.

By the counterclockwise rotation of the cam 55, the fan-shaped cam portion 55B naturally rotates counterclockwise as described above. In the process, the fan-shaped cam portion 55B moves the charge lever 61 and the charge lever shaft 63. Is rotated clockwise against the spring force of the charge lever spring 64 that urges the charge lever 61 in the counterclockwise direction, and the triangular ketobashi 61C provided on the charge lever 61 causes the rising portion 65 of the shutter lever 65 to rise.
When B is pressed, the rising portion 65B is overcome, and the shutter charge mechanism is charged as shown in the figure.

Pin 65C of the shutter lever 65 and the camera body
The shutter spring 67 is stretched between the pins 18C provided on the pin 10. The pin 18B provided on the camera body 10 that guides the elongated hole of the shutter lever 65 slidably and rotatably by the pulling force of the shutter spring 67. The left end of the elongated hole is brought into contact with the arm plate 65D provided on the shutter lever 65 and the pin 18E provided on the camera body 10. Also camera body 10
Shutter drive lever pivotally supported by pin 18D provided on the
A shutter drive pin 65A for operating 66A is inserted in a forked portion of the shutter drive lever 66A. Then, at a pin 66B at the lower end on the opposite side of the shutter drive lever 66A, the shutter drive lever 66A engages with a shutter blade 66 which is slidably guided in the left-right direction.

Here, the shutter blade 66 will be described.

The shutter blade 66 is one thin plate shown by a broken line of a short shape elongated in the left-right direction and guided so as to be slidable in the left-right direction as described above. Shutter blade
When 66 slides to the left, the square holes provided on the shutter blade 66 shown by the three broken lines on the right of the three circular lens holes shown by the three broken lines are aligned with the lens holes. The film screens of the three screen frames 16 are simultaneously exposed. Similarly, in the case of stroboscopic photography, the trigger switch for stroboscopic light emission is turned on when fully opened, and stroboscopic images can be photographed in perfect synchronization with the three screens.

By thus exposing each film with one shutter blade, the shutter mechanism can be very simple in structure, and the same exposure can be applied to each film at the same time with almost no adjustment. It is possible, and the cost can be greatly reduced.

As will be described later, the cam stopper after the shooting is finished.
The projecting portion 62D of 62 is removed from the groove portion 55A of the cam 55,
The arm portion 57A of the hoisting stopper 57 changes from the state shown in the drawing to change the arm portion 61A of the charge lever 61 and the arm portion of the cam stopper 62.
The edge of the arm portion 61A is abutted against the end surface of the arm portion 61A by the spring force of the hoisting stopper spring 58 which is offset from each edge of the arm portion 62A and urges clockwise. When the cam 55 rotates exactly once as described above by the film winding and the groove 55A of the cam 55 returns to the initial position, the spring force that biases the cam stopper 62 in the clockwise direction by the horizontal end portion of the charge lever spring 64. As a result, the protrusion 62D of the cam stopper 62 jumps into the groove 55A. By this jumping operation, the lock of the arm portion 57A of the hoisting stopper 57, which was locked at the end surface of the arm portion 62A of the cam stopper 62 at this time, is released.

The outer peripheral cylindrical surface of the film winding knob 51 is a ratchet gear, and the V-shaped projection at the tip of the winding stopper 57 is released by the release of the lock, and the spring force of the winding stopper spring 58 causes the ratchet to move. It jumps into the tooth space of the gear 51A and prevents the film winding knob 51 from rotating in the counterclockwise direction. That is, when the film winding is completed, the film winding knob 51 is prevented from further rotating.

Further, in the camera body 10, the tip of the reverse rotation preventing claw 53 utilizing the elasticity of the resin material is pressed against the ratchet gear 51A so that the film winding knob 51 is prevented from rotating in the opposite direction. Has become.

By pressing the release button 25 of the front cover 20, the release button pin 25A is planted on the back surface of the release button 25.
Operates in the direction of arrow A. That is, the front cover 20
When the is attached to the camera body 10, the hoist knob 51
The hoisting stopper 57 rotates counterclockwise against the spring force of the hoisting stopper spring 58 by the operation of the tip of the release button pin 25A in the arrow A direction described above. Then, from the end surface of the arm portion 57A of the hoisting stopper 57, the arm portion 61 of the charge lever 61
The edge of A is disengaged, and the charge lever 61, and thus the cam stopper 62, is rotated counterclockwise by the spring force of the charge lever spring 64.

The charge lever 61 is rotated counterclockwise by the spring force of the charge lever spring 64, which is stronger than the shutter spring 67.
61C hits the rising portion 65B of the shutter lever 65, and then comes off the rising portion 65B. Therefore, the shutter lever 65
Rotates clockwise about the pin 18B in the long groove of the shutter lever against the tensile force of the shutter spring 67, and then returns to the original state by the tensile force of the shutter spring 67. Therefore, the shutter drive pin 65A rotates the shutter drive lever 66A about the pin 18D, and the pin 66B at the lower end of the shutter drive lever 66A.
As described above, the shutter blade 66 engaged with is slid to the left and right, and the square holes provided in the shutter blade 66 simultaneously expose three films on each film of the three screen frames 16 and then close the film. Become.

As described above, one shutter blade is formed, and one pin (provided at the central upper portion of the shutter blade 66 and corresponding to the center of gravity of the shutter) 66B is driven by the drive lever 66A. The horizontal shutter blade 66
Can be stably moved horizontally.

Guide means (not shown) is provided above and below or below the shutter blade 66 so that the shutter blade 66 can be moved only in the horizontal direction.

The engagement between the drive lever 66A and the pin 66B is also loosely engaged in the vertical direction.

To smooth the movement of the shutter blades, the surface of the material of the shutter blades 66 is Teflon processed, or the inner surface of the shutter case 11 (FIG. 2) sandwiching the shutter blades is subjected to Teflon processing such as surface friction resistance. It is also preferable to cover it with a small and slippery member, or to impregnate the resin of the shutter case 11 with silicon or the like to improve the sliding property.

Further, by providing springs at both ends in the longitudinal direction of the shutter blades and engaging with the opposing portions of the shutter case, a force for driving the shutter is required a little, but the device can be stably moved in the horizontal direction. Is also good.

On the other hand, the cam stopper 62 also rotates counterclockwise together with the charge lever 61 as described above,
The projecting portion 62D of 62 comes out of the groove portion 55A of the cam 55. Therefore, even if you stop pressing the release button, the winding stopper
The arm portion 57A of 57 is biased clockwise by the spring force of the hoisting stopper spring 58, but the arm portion 61A of the charge lever 61.
Is stopped by the end face of the
The shaped protrusion does not lock the ratchet gear 51A of the winding knob 51. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

As described above, 72 meshes with the V groove 56A provided at the upper end of the cam shaft 56 that is planted in the cam 55 that rotates integrally with the sprocket gear 54, so that the film is equivalent to one shot, that is, three frames. This is an exponential gear that rotates clockwise by one tooth each time the cam shaft 56 is wound up and makes one revolution.

The index board 71 is printed on the upper surface of the index board gear 72 as an integrally molded product, and the remaining filmable number of the film is displayed from the film counter window 26 on the upper surface of the front cover 20.

A projecting portion 72A is provided on the lower surface of the exponential gear 72, and the projecting portion 72A is formed by the next film winding after the predetermined number of shootings is completed.
It is designed to be inserted between the E and another protruding portion 62E of the cam stopper 62. Then, the projecting portion 72A is replaced by the two projecting portions 61.
By inserting between E and 62E, the film is wound up for one shot, and even if the cam 55 makes one rotation and charging of the shutter is completed, both of the projecting portions 61E and 62E become the projecting portion 72A of the exponential gear 72. Since the movement is blocked, the charge lever 61 cannot operate and the protruding portion 62D of the cam stopper 62 cannot jump into the groove 55A of the cam 55. The arm portion 57A of the hoisting stopper 57 contacts the end face of the arm portion 62A of the cam stopper 62 by the spring force of the hoisting stopper spring 58, and the V-shaped projection at the tip of the hoisting stopper 57 locks the ratchet gear 51A. It is also impossible to expose the film by operating the charge lever 61 and opening / closing the shutter blades.

In this way, in the present embodiment, when the film is fed in two shots, the index plate gear 72 rotates by two teeth, and this rotation causes the protruding portion 72A of the index plate gear 72 to move. The movement of the charge lever 61 is prevented by pressing the protruding portion 61E at all, but the charging lever 61 is detached from another protruding portion 62E of the cam stopper 62. Therefore the protrusion
62D jumps into the groove 55A of the cam 55, the winding stopper 57 is disengaged, and the winding stopper 57 locks the winding knob 51, so that the film cannot be wound. Further, as described above, the movement of the charge lever 61 is blocked, so that the film cannot be exposed. In this way, the tongue at the leading edge of the film is prevented from being caught in the cartridge, and the tongue of the required length is secured. Therefore, in order to make the camera compact, even if a cartridge having a small outer diameter is used, there is no problem in pulling out the film from the cartridge at the time of development.

The camera, which has been photographed in this way, does not need to be rewound as described above, and the film in the cartridge is sent to the photo lab while it is still in the camera, and the cartridge is transferred to the camera. Then, the film is developed. Then, an image of the developed film is printed on a photographic printing paper, which is a photosensitive material, to which a lenticular lens sheet is pasted, by a special printer for producing a three-dimensional photograph, and printing is performed.

The printed printing paper is to be developed, and FIG. 6 is an enlarged sectional view showing the state of development and laminating of the printing paper on which the lenticular lens sheet is attached. FIG. 3 is a diagram showing a state of development, and FIG. 3B is a diagram showing a state of lamination processing.

In FIG. 6, since the lenticular lens sheet LS is attached to the emulsion layer EL surface side of the photographic printing paper PP, the processing liquid D for development permeates from the back surface side of the photographic printing paper PP and the reflection plate RP, The emulsion layer EL is developed through the base BP. Base BP of photographic paper PP
The back reflector RP does not have high mechanical strength, is likely to peel from the base BP, has a problem in terms of durability, and it has been difficult to see a stereoscopic image stably over a long period of time.

Therefore, after the photographic printing paper PP is developed and dried, the back surface of the photographic printing paper PP is laminated as shown in FIG.
By doing F, or putting it in a dedicated amount,
By sticking it on the mount, peeling of the reflection plate RP from the base BP can be prevented, so that it becomes possible to view a stereoscopic photographic image stably for a long period of time.

[0105]

According to the present invention, the relationship between the F number and the focal length of the taking lens attached to the film unit with lens and the minimum guide number of the built-in flash unit are clarified, and a good stereoscopic image can be seen on the photographic paper. The present invention provides a film unit with a lens for multi-view stereoscopic photography, and a processing method for processing stereoscopic photographic printing paper in which a stereoscopic photographic image on the photographic printing paper can be stably viewed for a long period of time.

[Brief description of drawings]

FIG. 1 is an external view of a film unit with a lens for three-lens stereoscopic photography according to an embodiment of the present invention.

FIG. 2 is a development view showing the configuration of a film unit with a lens for three-lens type stereoscopic photography according to an embodiment of the present invention.

FIG. 3 is a perspective view of each mechanism such as a camera body and a front cover of the film unit with a lens for three-lens stereoscopic photography according to one embodiment of the present invention as viewed from the back side.

FIG. 4 is a perspective view of a film used in a film unit with a lens for three-eye type stereoscopic photography according to an embodiment of the present invention.

FIG. 5 is a diagram showing images of three screen frames captured by a camera.

FIG. 6 is an enlarged cross-sectional view showing a state of developing and laminating a photographic printing paper to which a lenticular lens sheet is attached.

[Explanation of symbols]

 L1, L2, L3 lens A, B, C image BP base D processing liquid EL emulsion layer LS lenticular lens sheet LF laminating PP printing paper RP reflection plate

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G03C 11/08

Claims (4)

[Claims] 1. A method for making a three-dimensional photograph on each film screen by a lens corresponding to each film screen on a film screen of a plurality of adjacent frames which are preliminarily loaded with a film and are lined up in the film feeding direction. Take a picture,
In a film unit with a lens for multi-view stereoscopic photography, in which the film which has been photographed by the film winding knob is successively rewound into the cartridge, the relationship between the F number F _{NO of the} lens and the focal length f. Is a film unit with a lens for multi-view stereoscopic photography characterized by satisfying the following. F _NO ≧ f ^2/120 2. The film unit with lens for multi-view stereoscopic photography according to claim 1, wherein the focal length of the lens is 33 mm or more. 3. A method for making a three-dimensional photograph on each film screen by a lens corresponding to each film screen on a plurality of adjacent film screens which are preliminarily loaded with a film and are lined up in the film feeding direction. Take a picture,
In a film unit with a lens for multi-lens stereoscopic photography that has a built-in strobe unit in which the film that has been filmed by the film winding knob is sequentially rewound into the cartridge, the guide number of the strobe unit is 16 ( A film unit with a lens for multi-view stereoscopic photography, which is characterized by ISO400) or higher. 4. A method for making a three-dimensional photograph on each film screen by a lens corresponding to each film screen on a film screen of a plurality of adjacent frames which are preliminarily loaded with a film and which are lined up in the film feeding direction. Take a picture,
In the processing method of stereoscopic photographic printing paper, the film that has been filmed by the film winding knob is rewound in the film cartridge for multi-view stereoscopic photography so that the film can be sequentially rewound in the film cartridge. A method for treating stereoscopic photographic printing paper, characterized in that the photographic printing paper is developed and dried, and then the back surface of the photographic printing paper is laminated.