Title:
FILM UNIT WITH LENS
Document Type and Number:
Japanese Patent JP3458195
Kind Code:
B2
Abstract:
PURPOSE: To prevent generation of film flaws by retreating the first ribs and regulating a film position at the time of exposing in the optical axis direction by the spacing between the remaining second ribs and a main body.
CONSTITUTION: A subject is exposed in a range of A on the film F by an image pickup lens L. In such a case, the plural first ribs 12a are formed at positions in the vertical direction corresponding at least to the exposing range A on the film side surface of a rear cover 12 and respectively at least one piece of the second ribs 12b are formed at position in the vertical direction corresponding to the ranges exclusive of the exposing range A. The position in the optical axis direction at the time of exposing of the film F is regulated by rail surfaces 11a formed in the upper and lower part of the main body 11 and the second ribs 12b of the rear cover 12. The part near the center of the film F curves at this time but the first ribs 12a are retreated by 0.2 to 1.0mm from the second ribs 12b. As a result, the film F does no longer come into contact with the first ribs 12a and the generation of the film flaws within the exposing range does not arise any more.
Inventors:
Sakai Zenichi
Application Number:
JP716494A
Publication Date:
October 20, 2003
Filing Date:
January 26, 1994
Export Citation:
Assignee:
Konica Minolta Holdings, Inc.
International Classes:
G03B17/28; G03B17/04; G03C3/00; (IPC1-7): G03C3/00; G03B17/04; G03B17/28
Domestic Patent References:
| JP41528U | ||||
| JP6366840U |
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