JPH0635125A - Film unit with lens - Google Patents

Abstract

PURPOSE:To obtain a film unit with a lens provided with a compact finder by which the photographing range of a photographed object by lenses whose focal distances are different can be confirmed. CONSTITUTION:The whole of a unit main body 2 is covered with a packaging body 3. Then, photographing is executed through a hole for exposing a photographing barrel 4 and a shutter button 5. On the inside of the barrel 4, the photographing lens 10a and a photographing aperture 11 are provided and the wide-angle lens is provided further behind the aperture 11. Besides, the size of a finder window 7 is set so that the photographing range by the telephotographing can be confirmed and it is smaller than the finder window of the film unit with a lens dedicated to the standard photographing.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A photo film unit with a lens "Shaken Run Hi" (product name) with a built-in film in a unit body with a simple photographing mechanism built-in so that a photograph can be taken easily at any time from the applicant Manufactured and sold,
Widely used. This film unit with a lens has a very simple structure, as is known from Japanese Patent Publication No. 32-32615, for example, and after photography, it is possible to request a DPE for each film unit like a conventional photo film. ing.

In these film units with lenses,
An unexposed film pulled out from the cartridge between the main body for accommodating the film and the back cover is spread to the exposure position between the film roll chamber and the cartridge chamber. When the unexposed film that has been pulled out in advance in the film unit and stored in a roll is exposed, it is taken up in the patrone every time it is taken, and when it is finished shooting all frames, it is completely stored in the patrone. Can be stored in.

On the other hand, a camera "TWING" (trade name), which has two lenses with different focal lengths and which can switch between standard shooting and triple telephoto shooting, is manufactured and sold by the present applicant. With this camera, you can select either one of the two shooting lenses provided on the left and right of the front of the camera by operating the dial and select either telephoto or standard (wide-angle) shooting on the 135 film half size screen. It is the one.

By applying such a technique, a camera having two lenses having different focal lengths incorporated in a lens-fitted film unit and exposing images by two different photographing lenses simultaneously in an exposure range of one frame of 135 films is provided. Proposed. In such a camera, since the subject is photographed by two photographing lenses having different focal lengths,
Two viewfinders have been provided to confirm the shooting range for telephoto and standard (wide-angle) shooting, and a field frame for telephoto shooting has been provided in the window on the objective side of the viewfinder for standard (wide-angle) shooting.

[0006]

However, if the two viewfinders are provided as described above,
There is a drawback that a compact camera, which is a feature of the lens-fitted film unit, cannot be provided. Also,
Generally, in order to perform shooting with a plurality of shooting lenses having different focal lengths, it is necessary to provide a shutter blade for each shooting lens, which causes a problem that the shutter mechanism becomes complicated and the cost increases.

The present invention has been made in consideration of the above-mentioned problems of the prior art. In a film unit with a lens for simultaneously photographing with a plurality of photographing lenses having different focal lengths,
To provide a compact film unit with a lens capable of confirming a photographing range of an image photographed by different photographing lenses, and further to provide a lens unit with a lens in which a shutter mechanism is not complicated even when a plurality of photographing lenses are used. With the goal.

[0008]

In order to achieve the above object, in a film unit with a lens for simultaneously shooting with a plurality of taking lenses having different focal lengths, the taking range of the taking lens having a narrow angle of view is set among the taking lenses. Only the viewfinder that can be confirmed is provided. Furthermore, by arranging the taking lens with a long focal length in front of the shutter blade and the taking lens with a short focal length behind the shutter blade, one shutter blade can be used for a plurality of taking lenses with different focal lengths. can do.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 showing the external appearance of a lens-fitted film unit embodying the present invention, the unit main body 2 is mainly made of plastic and is entirely covered with a package 3.
The packaging body 3 is for making the appearance of the lens-fitted film unit clean, and a paper box or the like having a printed outer surface is used. The packaging body 3 is provided with holes for exposing a photographing tube 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. Through these holes, photographing is possible. It can be done.

A photographic lens 10a and a photographic aperture 11 are provided inside the photographic barrel 4, a telephoto lens 10a is used for telephoto photography, and a wide-angle lens 10b (see FIG. 2) provided behind the photographic aperture 11 is used. Take standard shooting. The finder window 7 is large enough to confirm the shooting range in telephoto shooting, and is smaller than the finder window of the lens-fitted film unit dedicated to standard shooting.

As shown in FIG. 2, the unit main body 2 is composed of a front cover 12, a main body base 13 and a rear cover 14. The exposure frame 1 is divided into two parts on the main body base 13.
A film roll chamber 16 and a cartridge chamber 17 are provided so as to sandwich 5a and 15b. Between the main body base 13 and the back cover 14, a cartridge 20 for preliminarily shielding and accommodating the film 19 having a width of 35 mm at the time of assembly thereof,
The film roll 21 which is pulled out from the cartridge 20 and has a roll shape is loaded in the film roll chamber 16 and the cartridge chamber 17, respectively.

The spool 20a of the cartridge 20 which is loaded in the cartridge chamber 16 engages with the fork of the winding knob 6 protruding from the upper wall of the cartridge chamber 16. Patrone 20 and film 19 used here
Is an international standard (ISO: 1007-1979 version)
35mm film with patrone specified in (13
5 film), and 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 attached to the front portion of the main body base portion 13 so as to be arranged in a straight line in the feeding direction of the film 19, and optical axes 22a and 22a of the respective lenses are provided.
22b is parallel. Two taking lenses 10a,
Since 10b have different focal lengths, proper image formation cannot be obtained unless the distance from the surface of the film 19 which is the image formation plane is changed. Therefore, the telephoto taking lens 10a having a long focal length is arranged in front of the shutter blade 23, and the standard taking lens 10b having a short focal length is arranged behind the shutter blade 23 between the film surface. There is. Further, behind the taking lenses 10a and 10b, exposure openings 24a and 24b are provided on the optical axes 22a and 22b, respectively.

A shutter device 26 is incorporated between the photographing lenses 10a and 10b, and the shutter button 5
When the shutter device 26 is operated, the shutter device 26 is actuated, and the exposure opening 24a,
Open and close 24b. Therefore, by one shutter release, two photographed images are simultaneously exposed in the photographing range for one frame of the film 19 as shown in FIG. Then, when the winding-up knob 6 is rotated, the spool 20a is rotated through the fork, so that the exposed film 19 is wound 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 is rotated 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. Note that the winding knob 6 is provided with a claw for preventing reverse rotation, and does not rotate even if an attempt is made to perform a reverse rotation operation by mistake.

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

The operation of the lens-fitted film unit constructed as described above will be described. The photographer first rotates the winding knob 6 until the rotation is locked, and confirms that the preparation for photographing is completed and the shutter is charged. The subject is framed at an appropriate position through the viewfinder window 7, but the size of the viewfinder window 7 is large enough to confirm the shooting range during telephoto shooting, so the main subject is placed within the field of view of the viewfinder window 7. To do so. 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 photographic light flux entering from the photographic lens 10a by opening and closing the shutter blade 23 passes through the exposure opening 24a centering on the optical axis 22a and the photographic screen 2 on the surface of the film 19 is taken.
5a is exposed. At the same time, the photographing light flux that has entered from the photographing aperture 11 passes through the exposure aperture 24b via the photographing lens 10b centering on the optical axis 22b, and is exposed on the photographing screen 25b on the surface of the film 19.

When one photographing is completed, the winding knob 6
Is operated to wind the exposed film 19 into the cartridge 20. When the sprocket, which rotates following the supply of the film 19, detects the one-frame fixed length feed, the winding knob 6
Indicates that is locked and ready for the next shot.
The exposure is repeated as described above, and the film 1 having a width of 35 mm is formed.
The photographing screens 25a and 25b are exposed every two frames within the range of the full-size frame of 9, and when "0" appears in the display window 8 for displaying the number of remaining films, the whole frame photographing is completed. After shooting all frames, take the lens-equipped film unit to a photo shop and request a DPE. Film development and print processing will be performed in the same way as before, and a print photo 27 as shown in Fig. 4 will be displayed. can get.

In the print photograph 27, two print screens 27a and 27b at the same moment are printed, a print screen 27a taken by the taking lens 10a for telephoto shooting on the right and a taking lens 10b for wide-angle shooting on the left. The print screen 27b taken at is positioned. Viewfinder window 7
Since the size of is the field of view frame for confirming the shooting range at the time of telephoto shooting, the main subject is taken at an appropriate position on the print screen 27a.
However, the main subject is shot at an appropriate position without protruding from the shooting range.

[0021]

As described above, according to the lens-fitted film unit of the present invention, in the lens-fitted film unit for simultaneously photographing with a plurality of photographing lenses having different focal lengths, the photographing lens having a narrow angle of view among the photographing lenses. Since only the finder that can confirm the shooting range is provided, the unit body can be downsized and a compact film unit with a lens can be provided. Also,
If the shooting range of the shooting lens with a narrow angle of view can be confirmed, good shooting can be performed without the main subject protruding beyond the shooting range without checking the shooting range of the shooting lens with a wide angle of view.

Further, by disposing the taking lens having the long focal length in front of the shutter blade and the taking lens having the short focal length behind the shutter blade, the shutter blade which should originally be provided for each taking lens. 1
Since it can be shared by one sheet, the shutter mechanism can be simplified and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is an external perspective view of a lens-fitted film unit 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 lens-fitted film unit shown in FIG.

FIG. 4 is a print photograph of the lens-fitted film unit shown in FIG.

[Explanation of symbols]

 2 unit body 4 shooting tube 6 winding knob 7 viewfinder windows 10a, 10b shooting lens 11 shooting openings 15a, 15b exposure frame 19 film 23 shutter blades

Claims (2)

[Claims] 1. A film unit with a lens for simultaneously taking images with a plurality of taking lenses having different focal lengths, wherein only a finder is provided for confirming a taking range of the taking lens having a narrow angle of view among the taking lenses. Film unit with lens. 2. In a lens-equipped film unit including a plurality of taking lenses having different focal lengths, one of the taking lenses having the shorter focal length is arranged behind one shutter blade, and the one having the longer focal length is arranged. A lens-fitted film unit, which is arranged in front of the shutter blade so that one shutter blade is opened and closed by a shutter release operation so that photographing is performed simultaneously by the plurality of lenses.