JPH08668Y2 - Film unit with lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a film unit with a lens, and more particularly to the arrangement of a taking lens.

[Conventional technology]

A film unit with a lens (product name "Sharansu Hi") has been released by the applicant of the present invention so that the photographer can easily enjoy taking pictures even if he does not have an ordinary camera.

Such a lens-fitted film unit is a unit main body equipped with a simple photographing mechanism, in which a film with a patrone is built in advance, and an exposed film is wound into the patrone. For this reason, it is sufficient to submit it to a photofinishing shop as it is after the shooting is finished, and the troublesome film rewinding operation is unnecessary. On the other hand, at the developing station, the unit main body may be disassembled or destroyed to take out the cartridge containing the exposed film, and the work can be performed in a bright room.

In such a film unit with a lens, in order to implant a simple image that is out of the ordinary camera's consciousness, the unit main body equipped with a shooting mechanism is wrapped in a cosmetic box with various illustrations and event information. It is commercially available. It should be noted that an opening is formed in a necessary portion such as a taking lens and a finder in this cosmetic box so that the unit can be operated while being put in the cosmetic box.

[Problems to be solved by the device]

However, the conventional lens-equipped film unit directly guides the light transmitted through the shooting lens to the film.
The shooting lens was placed in front of the film, that is, in the center of the unit body. For this reason, an opening for the taking lens has to be formed in the center of the cosmetic box, and when the illustration or the like is displayed on the cosmetic box, the taking lens and the opening for exposing the same are an obstacle.

[Purpose of device]

The present invention has been made in view of the above points, and an object of the present invention is to provide a lens-fitted film unit that can effectively use a cosmetic case.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a dark box between a film supply chamber and a film winding chamber, and mounts the taking lens and a shutter on the entire upper surface of the dark box, and the taking lens is provided on the inner surface of the dark box. Bend the optical axis of the
Further, first and second reflecting means for bending in a Z shape so as to be directed perpendicularly to the film surface are incorporated, and a shutter mechanism for operating the shutter and a single frame are provided between the dark box and the film winding chamber. A filming mechanism including at least a film winding mechanism for preventing rotation of a film winding knob provided at the upper portion of the film winding chamber when the film feeding of a minute portion is completed is provided, and the film is beside the filming lens. A finder opening is provided at a position closer to the supply chamber side.

[Action]

As described above, according to the present invention, since the photographing optical axis is bent in the Z-shape and the film surface is reached, it is not necessary to dispose the photographing lens at the center of the unit body. Further, since the photographing lens is arranged close to the side of the viewfinder opening, there is no opening in the center of the cosmetic case, and a large space for drawing illustrations and event information can be taken.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the outer appearance of the unit body and the paper box of the lens-fitted film unit according to the embodiment. The lens-fitted film unit has a simple photographing mechanism incorporated therein, and is constructed by wrapping a unit body 10 in which a 135 film with a cartridge is loaded in advance with a paper box 12.
The unit body 10 is composed of a body portion 14, a front cover 16 and a rear cover 18 that cover the body portion 14.

A finder opening 22 is formed in the upper right of the unit body 10, and a photographic lens 20 is provided on the side of the film roll chamber 34.
Are placed close together. As a result, even in the lens-fitted photo film unit using the perspective type frame finder, spatial parallax hardly occurs.

A shutter button 24 and a counter window 26 are provided on the upper surface of the unit body 10, and a film winding knob 28 is provided on the rear portion.

On the other hand, the paper box 12 is provided with openings for exposing the taking lens 20, the viewfinder opening 22, the shutter button 24, the film counter window 26 and the film winding knob 28 provided on the unit main body 10. As a result, the unit can be operated while being put in the paper box 12. Also, below the opening for the shooting lens, the illustration
29 is drawn.

2 shows the structure of the main part of the unit main body 10, and FIG. 3 shows the sectional structure of the unit main body 10 placed in the paper box 12.

The main body 14 has a cartridge compartment 32 for storing the cartridges.
A film roll chamber 34 for accommodating the unexposed film is formed, and the film pulled out from the film roll chamber 34 is exposed and then wound into the cartridge.

The transfer of the film is performed by the film winding knob 28 and the sprocket (not shown) interlocked therewith. That is, when the film winding knob 28 is rotated counterclockwise, the sprockets engaged with the perforations of the film are simultaneously rotated,
The film is sent from the film roll chamber 34 to the patrone chamber 32 side. When the film feed for one frame is completed,
The film winding knob 28 is prevented from rotating counterclockwise, and the counter gear 36 makes one rotation to cause the counter plate 38 to rotate.
Rotate by one scale. After all, the photographing mechanism including these various mechanisms necessary for photographing is collectively arranged between the dark box 99 and the patrone chamber described later.

Also, the cartridge chamber 32 of the main body 14 and the film roll chamber
34 and the square tube portion 98 that protrudes forward, and this square tube portion
An opening frame 46 connected to 98 is integrally provided. The first mirror 40, the mirror presser 48 for fixing the first mirror 40 in the opening frame 46, the diaphragm cylinder 97, and the shutter board 50 are attached to the opening frame 46. A second mirror 42 and a mirror retainer 47 for fixing the second mirror 42 inside the square tube portion 98 are attached to the square tube portion 98.
Of these two mirrors, the first mirror 40 is almost directly above the film at the exposure position, and the second mirror 42 is the taking lens 20.
The optical axis of the image is Z-shaped. In addition,
A slit 74 is formed in the mirror holder 47, and the second mirror 42 is elastically fixed in the rectangular tube portion 98. And the square tube
A dark box 99 is formed by attaching a holding member 45 described later to 98 and the opening frame 46. The diaphragm cylinder 97 held by the aperture frame 46 has a double opening, limits the aperture diameter of the taking lens 20, and reduces oblique light to become stray light in the dark box 99 to reduce the contrast of the taken image. Prevent that. A shutter board 50 that holds the shutter blades 52 is arranged in front of the diaphragm cylinder 97. This shutter board 50 has
A rectangular opening 56 and a circular opening 54 are formed respectively, and further,
Below the rectangular opening 56, a pin 58 that rotatably holds the shutter blade 52 is provided in a protruding manner. On the other hand, the shutter blade 52
An opening 62 having a protrusion 60 is formed in the
A spring hooking protrusion 64 is integrally provided. And
The tip of the release bar 66 is the rectangular opening of the shutter board 50.
It penetrates through 56 and is inserted into the opening 62 of the shutter blade 52.
As a result, a photographing optical path that passes through the photographing lens 20 and reaches the film surface through the aperture 54, the diaphragm tube 97, the first mirror 40, and the second mirror 42 is formed, and the dark box 99 allows the external light to enter the photographing optical path. So that it doesn't enter.

The holding member 45 described above is arranged in front of the shutter blades 52. The holding member 45 includes a mirror holder 47, a lens holder 70 for holding the taking lens 20 by being fitted in a circular recess 68, and a shutter board 50.
A support plate 72 that supports the pins 58 is integrally formed.
In addition, one end of the mirror retainer 47 has a protrusion 76 for spring engagement.
The projection 76 and the projection of the shutter blade 52 are formed.
A spring 78 is hooked between 64 and. As a result, the shutter blade 52 is biased counterclockwise about the pin 58.

Next, the operation of the embodiment configured as described above will be briefly described.

Main body with various parts such as shooting lens 20
Unit the main body by engaging the front cover 16 and the rear cover 18 with 14
Forming 10. And an illustration of this unit body 10
A film unit with a lens is formed by putting it in a paper box 12 on which 29 is drawn.

After that, when taking a picture, first, the film winding knob 28 is rotated to set the film F to the exposure position. Then, when the shutter button 24 is pressed, the tip portion of the release bar 66 pushes the projection 60 formed in the opening 62 of the shutter blade 52 in the lateral direction, and the shutter blade 52 rotates in the clockwise direction, so that the photographing lens 20 Light transmitted through the shutter board
It passes through 50 circular openings 54.

The first mirror that passes through the taking lens 20 and passes through the iris tube 97.
The light incident on 40 is reflected here and enters the second mirror 42. Then, the light reflected by the second mirror 42 is incident on the film F at the exposure position and the subject image is exposed on the film F.

Further, it is effective in eliminating parallax by bringing the taking lens 20 close to the viewfinder opening 22.

[Effect of device]

In the present invention, since the taking lens and the viewfinder aperture are provided close to each other, the taking optical axis and the viewfinder optical axis are close to each other, and parallax can be almost eliminated. Further, since the photographing lens is arranged above the unit main body, there is an effect that the cosmetic case can be effectively used and the sales force can be improved by fully utilizing the features of the lens-fitted film unit.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outer appearance of a lens-fitted film unit according to an embodiment of the present invention. FIG. 2 is an assembly perspective view showing the configuration of the main part of the embodiment. FIG. 3 is a sectional view showing a main part of the embodiment. 10 …… Unit main body 12 …… Paper box 20 …… Shooting lens 22 …… Finder opening 40 …… First mirror 42 …… Second mirror F …… Film.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Shown 63-115134 (JP, U) Shown 59-189633 (JP, U) Shown 63-177827 (JP, U) Shown 63- 198032 (JP, U) Actual Kaihei 1-57743 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A photographic lens having a film supply chamber in which an unexposed film is stored in advance and a film winding chamber in which an exposed film is wound, and which has an optical axis perpendicular to the film surface when a shutter is opened and closed. In the lens-fitted film unit in which shooting is performed, a dark box is provided between the film supply chamber and the film winding chamber, the shooting lens and the shutter are assembled on the entire upper surface of the dark box, and the shooting lens is provided on the inner surface of the dark box. First and second reflecting means for bending the optical axis downward downward and further in a Z shape so as to be directed perpendicular to the film surface are incorporated, and the shutter is operated between the dark box and the film winding chamber. Shutter mechanism for rotation and rotation of the film winding knob provided at the upper part of the film winding chamber when the film feeding for one frame is completed. A film-with-lens unit provided with a photographic mechanism including at least a winding stopping mechanism for preventing the above-mentioned, and having a finder opening at a position beside the photographic lens and close to the film supply chamber side.