JP3027477B2 - Film unit with lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens for simultaneously photographing with a plurality of photographing lenses having different focal lengths.

[0002]

2. Description of the Related Art In order to easily take a photograph at any time, a film unit with a lens, "Sharp Run Hi" (product name), with a built-in film in the unit body incorporating a simple photographing mechanism, has been filed by the applicant. Manufactured and sold,
Widely used. This film unit with a lens has a very simple structure as disclosed in, for example, Japanese Patent Publication No. 2-32615, and after photographing, a DPE can be requested for each film unit in the same manner as a conventional photographic film. ing.

In these film units with lenses,
An unexposed film drawn from the patrone between the main body for storing the film and the back cover is extended to an exposure position between the film roll chamber and the patrone chamber. When the unexposed film, which has been drawn out in advance and stored in a roll, is exposed in the film unit, it is taken up in the patrone every time it is taken, and completely stored in the patrone when all frames are taken. Can be stored.

[0004] On the other hand, a camera "TWING" (trade name) which incorporates two lenses having different focal lengths and can switch between standard shooting and triple telephoto shooting is manufactured and sold by the present applicant. In this camera, one of two photographing lenses provided on the left and right sides of the front of the camera is switched and selected by operating a dial, so that telephoto or standard (wide-angle) photographing can be arbitrarily performed on a 135 film half-size screen. It was made.

[0005] By applying such technology, there is a camera which incorporates two lenses having different focal lengths into a film unit with a lens and simultaneously exposes images by two different photographing lenses to an exposure range of one frame of 135 film. Proposed. In such a camera, an object is photographed by two photographing lenses having different focal lengths.
Two viewfinders are provided to confirm the photographing range for telephoto and standard (wide-angle) photographing, and a field frame for telephoto photographing is provided in the window on the object side of the viewfinder for standard (wide-angle) photographing.

[0006]

However, if two viewfinders are provided as described above,
There is a disadvantage that a compact camera, which is a feature of the film unit with a lens, cannot be provided. Also,
Generally, in order to perform photographing with a plurality of photographing lenses having different focal lengths, it is necessary to provide shutter blades for each photographing lens, and there is a problem that a shutter mechanism becomes complicated and costs increase.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems of the prior art.
Provided is a compact film unit with a lens capable of confirming a photographing range of an image photographed by a different photographing lens, and a film unit with a lens that does not complicate a shutter mechanism even when a plurality of photographing lenses are used. With the goal.

[0008]

In order to achieve the above object, the present invention provides a lens-equipped film in which a film is pre-loaded.
Two shootings with different focal lengths in the Illum unit
Place the lenses side by side in the film feed direction, and
Through these shooting lenses by shutter release operation
It is configured to shoot simultaneously. And the angle of view is narrow
One that allows you to check the shooting range of
In front of the viewfinder and one of the lenses with a shorter focal length
And behind the other taking lens,
Open and close by the release operation and pass through each shooting lens
A shutter blade to expose the film
The subject image by the shadow lens is lined up in the film feeding direction
To be exposed at approximately the same screen size
An exposure frame is set to partition the horizontal exposure range for one frame
It is a digit .

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 showing the appearance of a film unit with a lens according to the present invention, a unit body 2 is mainly formed of plastic, and the whole is covered with a package 3.
The package 3 is used to clean the appearance of the lens-fitted film unit, and a paper box or the like having an outer surface printed thereon is used. The package 3 is provided with holes for exposing a photographing cylinder 4, a shutter button 5, a winding knob 6, a finder window 7, and a display window 8 for confirming the number of remaining films. You can do it.

A photographic lens 10a and a photographic aperture 11 are provided inside the photographic tube 4. Telephoto photography is performed by the telephoto lens 10a, and a wide-angle lens 10b (see FIG. 2) provided behind the photographic aperture 11 is provided. Perform standard shooting. The finder window 7 has a size that allows the user to confirm the shooting range of telephoto shooting, and is smaller than the finder window of a film unit with a lens dedicated to standard shooting.
The finder window 7 is a simple window having a rectangular opening.
This is an easy-to-use visual field frame.

As shown in FIG. 2, the unit main body 2 includes a front cover 12, a main body base 13, and a rear cover 14. The exposure frame 1 divided into two is provided on the main body base 13.
A film roll chamber 16 and a patrone chamber 17 are provided so as to sandwich 5a and 15b. A patrone 20 for shielding and storing a 35 mm wide film 19 in advance between the main body base 13 and the back cover 14 during assembly thereof;
A film roll 21 drawn from the patrone 20 and formed into a roll shape is loaded into the film roll chamber 16 and the patrone chamber 17, respectively.

When loaded in the patrone chamber 16, the spool 20a of the patrone 20 engages with the fork of the winding knob 6 projecting from the upper wall of the patrone chamber 16. Patrone 20 and film 19 used here
Is an international standard (ISO: 1007-1979 edition)
35mm film with patrone specified in (13)
The rear end of the film 19 is fixed to a spool 20a rotatably provided in the cartridge 20.

Two photographing lenses 10a and 10b are mounted on the front of the main body base 13 so as to be arranged in a straight line in the feeding direction of the film 19, and the optical axes 22a and 22b of the respective lenses are mounted.
22b is parallel. Two photographing lenses 10a,
Since the lenses 10b have different focal lengths, an appropriate image cannot be obtained unless the distance from the film 19 serving as the image forming surface is changed. Therefore, the telephoto taking lens 10a having a long focal length is provided in front of the shutter blade 23, and the standard taking lens 10b having a short focal length is provided behind the shutter blade 23 and between the film surface. I have. Exposure openings 24a and 24b are provided on the optical axes 22a and 22b, respectively, behind the photographing lenses 10a and 10b.

A shutter device 26 is incorporated between the photographing lenses 10a and 10b.
Is operated, the shutter device 26 is operated, and the exposure openings 24a, 24a,
24b is opened and closed. Therefore, two shot images are simultaneously exposed to the shooting range of one frame of the film 19 by one shutter release as shown in FIG. Thereafter, when the winding knob 6 is rotated, the spool 20a is rotated via the fork, so that the exposed film 19 is rolled into the cartridge 20.

At the same time, the next film frame is supplied from the film roll 21 to the positions of the exposure frames 15a and 15b, and the sprocket rotates following the supply of the film 19. When one frame fixed length feed is detected by the rotation of the sprocket, the rotation of the winding knob 6 is locked, and the preparation for the next photographing is completed. The hoisting knob 6 is provided with a claw for preventing reverse rotation, and does not rotate even if a reverse operation is attempted by mistake.

Since the horizontal length (film feeding direction) of the exposure frames 15a and 15b is the same as the horizontal length of one frame of a 35 mm full size screen, the film is formed by the above-described photographing mechanism. Two photographing screens 25a and 25b as shown in FIG. 3 are exposed on the 19th surface. This 2
One of the photographing screens 25a and 25b has a vertically long screen exposed in parallel in a range of one 35 mm full size screen, an image by telephoto photographing is exposed on the photographing screen 25a, and a standard photographing is exposed on the photographing screen 25b. The image is exposed.

The operation of the thus-configured film unit with lens will be described. The photographer first performs a rotating operation until the rotation of the winding knob 6 is locked, and confirms that the photographing preparation is completed and the shutter is charged. Although the subject is framed at an appropriate position through the viewfinder window 7, the size of the viewfinder window 7 is large enough to confirm the shooting range during telephoto shooting. To do. When the framing is determined and the shutter button 5 is operated, the shutter device 26 is driven, and the shutter blades 23 simultaneously open and close the exposure openings 24a and 24b.

The photographing light flux entering from the photographing lens 10a by opening and closing the shutter blades 23 passes through the exposure opening 24a around the optical axis 22a and passes through the photographing screen 2 on the film 19 surface.
It is exposed to 5a. At the same time, the photographing light flux entering from the photographing opening 11 passes through the exposure opening 24b through the photographing lens 10b around the optical axis 22b, and is exposed to the photographing screen 25b on the film 19 surface.

When one shot is completed, the winding knob 6
Is operated to take up the exposed film 19 into the cartridge 20. When the sprocket, which rotates following the supply of the film 19, detects one-frame fixed-length feed, the winding knob 6
Is locked to inform that the next shooting preparation is completed.
The exposure is repeated as described above, and the film 1 having a width of 35 mm is formed.
Approximately two frames in the range of one full-frame 9 frames
When the vertically long photographing screens 25a and 25b are exposed and "0" appears in the display window 8 displaying the number of remaining films, all frame photographing is completed. After the shooting of all frames is completed, if the film unit with the lens is brought to a developing dealer and requested for a DPE, the film processing and print processing are performed by the conventional processing, and the print photograph 27 as shown in FIG. can get.

In the print photograph 27, two print screens 27a and 27b at the same moment are printed, and a print screen 27a photographed by the photographing lens 10a for telephoto photographing on the right, and a photographing lens 10b for wide-angle photographing on the left. The print screen 27b photographed at the position is positioned. Viewfinder window 7
Of the main subject is photographed at an appropriate position on the print screen 27a.
The main subject is photographed at an appropriate position without protruding from the photographing range.

[0021]

As described above, according to the film unit with the lens of the present invention, two types of photographing having different focal lengths.
You can shoot through the lens at the same time, and the angle of view
So that you can check the shooting range with the narrower shooting lens
Only one viewfinder, and each photographic lens
Shooting using a single shutter blade
Simplifies the structure of the film unit with lens
To reduce the size and cost.
You. Furthermore, the image of the subject by each photographing lens is substantially the same.
Horizontal exposure for one frame of film as a portrait screen
Because the shot is taken to fit within the range,
By just performing the lint processing, it is possible to use two screens with each shooting lens.
One print photo is obtained.

Further, by arranging a photographic lens having a long focal length in front of the shutter blade and a photographic lens having a short focal length behind the shutter blade, the shutter blade which must be provided for each photographic lens. 1
As a result, the shutter mechanism can be simplified and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a film unit with a lens embodying the present invention.

FIG. 2 is a sectional view of the lens-fitted film unit shown in FIG.

FIG. 3 is a photographing screen by the film unit with a lens shown in FIG. 1;

FIG. 4 is a photograph printed by the film unit with a lens shown in FIG. 1;

[Explanation of symbols]

 2 Unit body 4 Photographing cylinder 6 Winding knob 7 Viewfinder window 10a, 10b Photographing lens 11 Photographing opening 15a, 15b Exposure frame 19 Film 23 Shutter blade

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-188737 (JP, A) JP-A-52-56921 (JP, A) JP-A-2-101446 (JP, A) Jpn. Microfilm (JP, U) photographing the contents of the specification and drawings attached to the application form No. 94187 (Japanese Utility Model Application No. 4-50850) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03C 3 / 00 G03B 13/10

Claims (1)

(57) [Claims] 1. A film is loaded in advance and a film is supplied.
Two different focal lengths arranged side by side in the feed direction
In the lens-fitted photo film unit in which imaging is performed at imaging lens, and one viewfinder you can confirm the imaging range of the narrow photographing lens ones angle of the photographing lens, focal length
In front of a short-distance shooting lens and at a long focal length
Behind the lens, and opened by the shutter release operation.
Close and expose the film through each photographic lens
One shutter blade and each lens
The body images are arranged side by side in the film feeding direction and
1 frame of film so that it is exposed at the same screen size
A film unit with a lens, comprising an exposure frame for partitioning a long exposure range .