JP3559872B2 - Film integrated camera - Google Patents

Description

[0001]
[Industrial applications]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film-integrated camera in which a photographic film is pre-loaded at the time of assembly.
[0002]
[Prior art]
In recent years, a film-integrated camera that loads photographic film in advance at the time of assembly has been used. For example, a film-integrated camera loads a photographic film in advance at the time of assembly, winds up the photographic film for each photographing, and disassembles at the photofinisher when photographing is completed. Some take out photographic film that has already been taken.
[0003]
[Problems to be solved by the invention]
In such a film-integrated camera, a shooting frame for defining a shooting range of a photographic film, a film storage room and a winding room are integrally formed for miniaturization and simplification. In order to ease exposure to light, the distance between the photographing frame and the film storage room or the winding room is increased, which is an obstacle to miniaturization.
[0004]
In addition, the overlaying near the shooting frame of the main body reduced the gap between the film surface and the main body, preventing light from entering the film storage room and the winding room side, but the perforation of the photographic film at the time of shooting If it comes to the position of the end of the rail that guides the winding of the photographic film, the end of the rail may enter the perforation, and the focus position may shift or the photographic film may be scratched by being caught during winding. There's a problem.
[0005]
Furthermore, the film-integrated camera is provided with a sector for exposing the photographic film by opening and closing the optical path of the taking lens, for the sake of compactness and simplicity. This is a cause of internal reflection in the photographing frame. For this reason, in the case of a metal sector, after punching out by pressing, the end face of the light-shielding part is painted black, and in the case of a resin sector, the end face of the light-shielding part is subjected to lash processing. In the case of (1), separate processing is required, which causes an increase in processing cost.
[0006]
The present invention has been made in view of such a point, and the inventions according to claims 1 to 3 enable miniaturization and simplification, and furthermore, prevent light intrusion and light leakage to prevent image quality of a photographic film. In particular, it is an object of the present invention to provide a film-integrated camera that has a simple structure, reduces reflection of incident light at the end of a light-shielding portion of a sector at the time of photographing , and prevents internal reflection.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem and to achieve the object, the invention according to claim 1 is to load a photographic film in advance at the time of assembling, wind up the photographic film for each photographing, and take out the photographed photographic film. In the body camera, a sector for exposing the photographic film by opening and closing the optical path of a photographic lens is provided, and an uneven portion for diffusing incident light at the time of shooting is formed at an end of the light shielding section of the sector for opening and closing the optical path. And
[0008]
According to a second aspect of the present invention, in a film-integrated camera in which a photographic film is loaded in advance at the time of assembling, the photographic film is wound up for each photographing, and the photographed photographic film is taken out, the optical path of a photographic lens is opened and closed. A sector for exposing the film is provided, and a taper for diffusing incident light at the time of photographing is formed at an end of the light-shielding portion of the sector that opens and closes the optical path.
[0009]
According to a third aspect of the present invention, there is provided a film-integrated camera in which a photographic film is loaded in advance at the time of assembling, the photographic film is wound up for each photographing, and the photographed photographic film is taken out. includes a sector of exposing the film, the end for opening and closing the optical path of the light shielding portion of this sector, to form the irregularities for diffusing the shooting incident light, the more uneven, to form a taper to diffuse photographing incident light It is characterized by:
[0014]
[Action]
According to the first aspect of the present invention, irregularities for diffusing incident light at the time of photographing are formed at the end of the light-shielding portion of the sector that opens and closes the optical path, and the light reflected at the end is diffused and reduced by the irregularities at the time of photographing. And internal reflection can be prevented.
[0015]
According to the second aspect of the present invention, a taper for diffusing incident light at the time of photographing is formed at an end for opening and closing the optical path of the light-shielding portion of the sector, and the reflected light at the end is diffused and reduced by the taper at the time of photographing . Internal reflection can be prevented.
[0016]
In the invention of claim 3, wherein, in an end portion for opening and closing the optical path of the light shielding portion of the sector, to form the irregularities for diffusing the shooting incident light, the more uneven, a tapered diffusing the shooting incident light, photographing Occasionally , the reflected light at the end portion is further diffused and reduced by the unevenness and the taper, and the internal reflection can be prevented.
[0021]
【Example】
Hereinafter, a film-integrated camera according to the present invention will be described in detail with reference to the drawings. 1 is a front view of the film-integrated camera, FIG. 2 is a plan view of the film-integrated camera, FIG. 3 is a diagram showing a state in which a rear cover of the film-integrated camera is opened, and FIG. 4 is a line IV-IV in FIG. FIG.
[0022]
The film-integrated camera 1 is a simple camera that is commercially available with a photographic film loaded therein. The photographic film is loaded in a camera assembling process, and operations such as loading and rewinding of a photographic film by a user can be performed. It is no longer needed and the user can shoot immediately.
[0023]
This film-integrated camera 1 is constructed by assembling a front cover 3 and a rear cover 4 on the front and back of a main body 2, a photographing lens 5 is provided at the front center, and a finder 6 is provided above the photographing lens 5. A flash emission window 7 is provided near the finder 6.
[0024]
The strobe light emission window 7 is arranged horizontally long, and is separated from the photographing lens 5 so that the strobe light emission does not adversely affect the photographing. A grip 8 is provided on the right side of the film-integrated camera 1, and a release button 9 is provided above the grip 8. Further, a part of the winding knob 10 is exposed from the notch 8a at the upper portion of the grip portion 8, and by rotating the winding knob 10, the photographed film is wound.
[0025]
A photographing frame 11 is provided at the center of the main body 2. A film storage room 12 is provided on one of the left and right sides of the photographing frame 11, and a winding room 13 is provided on the other. Further, a battery chamber 14 is provided near the film storage chamber 12, and a battery 15 is stored in the battery chamber 14 from the front side of the drawing.
[0026]
A holding frame 16 is attached to the photographing frame 11 of the main body 2, and a lens frame 17 in which the photographing lens 5 is incorporated is attached to the holding frame 16. A sector 18 is assembled between the holding frame 16 and the lens frame 17. When the release button 9 is pressed, the sector 18 is actuated by a shutter mechanism to open and close the optical path L of the photographing lens 5, thereby exposing the photographic film F.
[0027]
The photographing frame 11 defines a photographing range of the photographic film F, and a light-shielding frame 20 is attached to the photographing frame 11 in a light-tight manner in order to define a screen size formed separately. A rib 20a for blocking light is provided inside the light-blocking frame 20, and this rib 20a blocks light rays that affect other screens to prevent light from entering or leaking.
[0028]
As shown in FIG. 4, engagement recesses 20 d and 20 e are engaged with both side portions 20 b and 20 c of the light shielding frame 20, and one engagement recess 20 d is an engagement protrusion formed on the wall 21 of the film storage chamber 12. The other engaging recess 20e is fitted to the engaging protrusion 22a formed on the wall 22 of the hoisting chamber 13, and is detachably attached. One side 20b of the light-shielding frame 20 is connected to the wall 21 to form a part of the film storage chamber 12, and the other side 20c of the light-shielding frame 20 is connected to the wall 22 and part of the hoisting chamber 13. Is composed.
[0029]
As described above, the light-shielding frame 20 is detachable, and by replacing the light-shielding frame with a light-shielding frame having a different screen size, it is possible to capture a full size, a panorama size, a high definition size, or the like. Further, a part of the film storage chamber 12 and a part of the hoisting chamber 13 are formed by the light shielding frame 20, and the distance between the photographing frame 11 and the film storage room 12 or the hoisting chamber 13 is shortened. Thus, it is possible to prevent light from entering or leaking into the film storage chamber 12 or the winding chamber 13.
[0030]
The film storage chamber 12 is loaded with a spool 23 around which the photographic film F is wound, and the hoisting chamber 13 is loaded with a patrone 24 for winding up the photographic film F. A sprocket 25 is rotatably provided on the upper side of the light shielding frame 20, and the sprocket 25 is engaged with the perforation F1 of the photographic film F, and is rotated by winding the photographic film F to rotate a counter (not shown). Displays the number of shot frames.
[0031]
Rails 20f and 20g for guiding the winding of the photographic film F are provided above and below the light-shielding frame 20, and a guide larger than the perforation F1 of the photographic film F is provided on a part of the rails 20f and 20g on the film storage chamber 12 side. Parts 20h and 20i are formed.
[0032]
There is a projection 20j connecting the guides 20h and 20i at the same height as or slightly lower than the guides 20h and 20i, and the gap between the guides 20h and 20i is reduced to reduce the gap between the photographic film F and light. Preventing intrusion.
[0033]
Further, a guide portion larger than the perforation F1 of the photographic film F and a convex portion connecting the guide portions may be formed on a part of the rails 20f and 20g on the winding chamber 13 side. In this case, the guide portion and the convex portion may be used. Light intrusion and light leakage to the hoisting chamber 13 side are prevented.
[0034]
Further, the guide portions 20h and 20i do not enter the perforations F1 of the photographic film F, and the position of the photographic film F is fixed and the focus position is prevented from being shifted. Further, the guide portions 20h and 20i are not caught by the perforations F1 of the photographic film F during winding, and are smoothly wound.
[0035]
Next, a sector for exposing a photographic film by opening and closing the optical path of the taking lens will be described with reference to FIGS. The sector 18 of the embodiment shown in FIG. 5 has an uneven portion 18b formed at an end 18a for opening and closing the light path of the light-shielding portion, and the uneven portion 18b has a shape in which a portion corresponding to the exposure opening 16a of the holding frame 16 has a straight line and a valley. It has become. In the sector 18 of the embodiment shown in FIG. 6, similarly, an uneven portion 18 b is formed at an end portion 18 a which opens and closes the optical path of the light shielding portion, and the uneven portion 18 b has a curved portion corresponding to the exposure opening portion 16 a of the holding frame 16. It is shaped like a mountain valley. As described above, the unevenness 18b is formed at the end 18a that opens and closes the optical path of the light-shielding portion of the sector 18, and the unevenness 18b allows the end 18a to be formed by the unevenness 18b without performing post-processing such as black dyeing or other processing such as lash processing. The reflected light of the light is diffused and reduced, and the internal reflection can be prevented.
[0036]
In the embodiment of FIG. 7, the sector 18 has a taper 18c at an end 18a for opening and closing the light path of the light-shielding portion, and the taper 18c points a portion corresponding to the exposure opening 16a of the holding frame 16 toward the photographing lens 5 side. It has an inclined surface. The sector 18 in the embodiment of FIG. 8 has a taper 18c at an end 18a for opening and closing the light path of the light-shielding portion, and the taper 18c points a portion corresponding to the exposure opening 16a of the holding frame 16 toward the photographic film F side. It has an inclined surface. As described above, the taper 18c is formed at the end 18a that opens and closes the optical path of the light-shielding portion of the sector 18, and the end 18a is formed by the taper 18c without performing post-processing such as black dyeing or other processing such as lash processing. The reflected light of the light is diffused and reduced, and the internal reflection can be prevented.
[0037]
In the sector 18 in the embodiment of FIG. 9, the end 18a that opens and closes the optical path of the light-shielding portion is formed with irregularities 18b and further has a taper 18c. The unevenness 18b has a shape of a peak and a valley with a curve, but may have a shape of a peak and a valley with a curve. In addition, the taper 18c has an inclined surface facing the photographic lens 5, but may have an inclined surface facing the photographic film F side. In this manner, the unevenness 18b is formed at the end 18a that opens and closes the optical path of the light-shielding portion of the sector 18, and the taper 18C is formed at the unevenness 18b. Without the irregularities 18b and the taper 18c, the light reflected at the end 18a can be further diffused and reduced, and internal reflection can be prevented.
[0038]
【The invention's effect】
As described above, according to the first aspect of the present invention, since an uneven portion for diffusing incident light at the time of photographing is formed at an end portion of the light-shielding portion of the sector that opens and closes the optical path, post-processing such as black dyeing or arashi processing is performed. Without separate processing, with a simple structure due to the unevenness, the reflected light at the end portion can be diffused and reduced at the time of photographing , and internal reflection can be prevented, thereby improving the image quality.
[0039]
According to the second aspect of the present invention, since a taper for diffusing incident light at the time of photographing is formed at the end of the light-shielding portion of the sector that opens and closes the optical path, it is possible to perform post-processing such as blackening or other processing such as lash processing. With a simple structure using a taper, the reflected light at the end portion is diffused and reduced at the time of photographing , and internal reflection can be prevented, thereby improving the image quality.
[0040]
According to the third aspect of the present invention, at the end of the light-shielding portion of the sector that opens and closes the optical path, unevenness for diffusing incident light at the time of imaging is formed, and further, at the unevenness, a taper for diffusing incident light at the time of imaging is formed. With a simple structure with unevenness and taper, without further processing such as post-processing such as black dyeing or rash processing, the reflected light at the end is further diffused and reduced during shooting , preventing internal reflection and improving image quality improves.
[Brief description of the drawings]
FIG. 1 is a front view of a film-integrated camera.
FIG. 2 is a plan view of the film-integrated camera.
FIG. 3 is a diagram showing a state in which a front cover of the film-integrated camera is opened.
FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;
FIG. 5 is a diagram showing a configuration of a sector.
FIG. 6 is a diagram showing a configuration of another embodiment of a sector.
FIG. 7 is a diagram showing a configuration of another embodiment of a sector.
FIG. 8 is a diagram showing a configuration of another embodiment of a sector.
FIG. 9 is a diagram showing a configuration of another embodiment of a sector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Film-integrated camera 2 Main body 11 Photographing frame 20 Shading frame 20a Rib F Photographic film

Claims (3)

A photographic film is loaded in advance at the time of assembly, and the photographic film is wound up for each photographing, and a film-integrated camera for taking out a photographed photographic film,
Includes a sector of exposing the photographic film by opening and closing the optical path of the taking lens, the end for opening and closing the optical path of the light shielding portion of the sector, film-which is characterized in that the formation of the irregularities for diffusing photographing incident light Body camera. A photographic film is loaded in advance at the time of assembly, and the photographic film is wound up for each photographing, and a film-integrated camera for taking out a photographed photographic film,
Includes a sector of exposing the photographic film by opening and closing the optical path of the taking lens, the end for opening and closing the optical path of the light shielding portion of the sector, film-which is characterized in that a tapered diffusing the photographing incident light Body camera. A photographic film is loaded in advance at the time of assembly, and the photographic film is wound up for each photographing, and a film-integrated camera for taking out a photographed photographic film,
Includes a sector of exposing the photographic film by opening and closing the optical path of the taking lens, the end for opening and closing the optical path of the light shielding portion of the sector, to form the irregularities for diffusing the shooting incident light,
A film-integrated camera , wherein a taper for diffusing incident light at the time of photographing is formed in the unevenness.

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