# US 5,353,079 A · Film unit with photographic lens

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- Number: US 5,353,079 A
- Document ID: US5353079A
- Status: Granted
- Kind: A
- Application number: 08/008,164
- Filed: 1993-01-25
- Granted: 1994-10-04
- Earliest claimed: 1992-01-30
- Assignees: Konica Corporation
- Inventors: Zeniti Sakai; Ken Ishida
- Web page: https://patentgrep.com/patent/US5353079A

## CPC

- G03B 19/04: Roll-film cameras
- G03B 15/05: Combinations of cameras with electronic flash apparatus; Electronic flash units
- G03B 43/00: Testing correct operation of photographic apparatus or parts thereof
- G03B 2215/0503: Built-in units
- G03B 2219/045: adapted for unloading the film in the processing laboratory, e.g. disposable, reusable or recyclable cameras
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

In a single use camera in which an unexposed film has been loaded and which is sold together with the unexposed film, the camera comprises a strobe including an electric circuit, to irradiating a subject; and a camera body in which the strobe is incorporated, the camera body provided with a hole through which the function of the strobe can be checked.

## Claims

### Claim 1

A film unit including a picture-taking lens through which a subject is photographed on an unexposed film, comprising:
a shutter mechanism to open or close an aperture for the picture-taking lens;
a release button to actuate said shutter mechanism so as to open the aperture for the picture-taking lens;
a strobe to irradiate the subject with light;
an electrical circuit electrically coupled to the strobe to supply electric power thereto;
a trigger switch mechanically linked with said shutter mechanism and electrically coupled to said electrical circuit so that the strobe is triggered when said shutter mechanism opens the aperture for the picture-taking lens;
a pair of terminals in said electrical circuit electrically coupled to both sides of said trigger switch, respectively; and
a film unit body on which holes corresponding in position to said pair of terminals are provided so that said trigger switch can be by-passed with a by-pass line in contact with the pair of terminals through said holes, whereby the strobe can be triggered without actuating the shutter mechanism.

### Claim 2

A method of checking a film unit which includes a picture-taking lens through which a subject is photographed on an unexposed film, a strobe to irradiate the subject with light, an electrical circuit to supply electric power to the strobe, a trigger switch to trigger the strobe, by-pass terminals to by-pass the trigger switch, and a film unit body on which holes corresponding in position to the by-pass terminals are provided, comprising the steps of:
inserting ends of a by-pass line through said holes, respectively, and
engaging said ends of the by-pass line with the by-pass terminals so as to enable triggering of the strobe to emit light.