Title:
FILM UNIT WITH LENS
Document Type and Number:
Japanese Patent JP3937628
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a background from being photographed dark by dimming a strobe light so that difference in luminance between a main subject to be photographed that is irradiated with the strobe light and the background is not more than a specified EV value on an incorporated film.
SOLUTION: In the film unit with lens, an armature 16 that has its tip branched in two and acts as a main switch for strobe is provided on the back surface of an arm part 11c of a diaphragm plate 11 and the tip part of the armature 16 is brought into pressurized contact with a surface of a printed board 151. The tip parts of the armature 16 is abutted to both conductive patterns 151a and 151b forming the main switch. In this case, a stop value and reference exposure quantity at the time of photographing with the strobe light is determined so that the difference in luminance between a standard reflection plate irradiated with the strobe light and the background that is 9 or below in EV value and at the same time, the lowest luminance for forming a printable latent image on the film is equivalent to ≤4.5 in EV value equivalent to the latitude of printing paper on the incorporated film.
Inventors:
Takao Hosaka
硲 清昭
Kiyoshi Yamashita
Toshifumi Iijima
硲 清昭
Kiyoshi Yamashita
Toshifumi Iijima
Application Number:
JP3136999A
Publication Date:
June 27, 2007
Filing Date:
February 09, 1999
Export Citation:
Assignee:
Konica Minolta Holdings Co., Ltd.
International Classes:
G03B7/16; G03B15/05; G03B17/04; G03C3/00; (IPC1-7): G03B7/16; G03B15/05; G03B17/04; G03C3/00
Domestic Patent References:
| JP7261237A | ||||
| JP4251831A | ||||
| JP5188454A | ||||
| JP8184944A |
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