Photography – With object illumination for exposure – Having flash built into camera
Patent
1998-01-14
1999-03-30
Perkey, W. B.
Photography
With object illumination for exposure
Having flash built into camera
396201, 396267, 396282, 396284, G03B 166, G03B 1503
Patent
active
058900225
ABSTRACT:
A camera comprises an exposure counter for indicating the number of frames of a film load that have been exposed or remain to be exposed, and a flash illumination light source for illuminating a subject being photographed. The exposure counter has a phosphorescent substance that becomes luminescent due to the absorption of radiation and continues with an afterglow some time after the radiation has stopped, to permit one to read the exposure counter in dimly lit or dark ambience. A light pipe directs illumination from the light source to the phosphorescent substance. Thus, the exposure counter can be read in dimly lit or dark ambience after the light source has been used.
REFERENCES:
patent: 2298403 (1942-03-01), Mihalyi
patent: 3729626 (1973-04-01), Thurlow et al.
patent: 4758716 (1988-07-01), Mayer et al.
patent: 4829164 (1989-05-01), Rudolph et al.
patent: 4914278 (1990-04-01), Rudolph et al.
patent: 5339125 (1994-08-01), Fridman et al.
patent: 5432578 (1995-07-01), Suzuki
patent: 5486885 (1996-01-01), Matsumoto
patent: 5572283 (1996-11-01), Wakabayashi et al.
patent: 5784658 (1998-07-01), Hata et al.
McGinn Donald P.
Petruchik Dwight J.
Eastman Kodak Company
Fields Roger A.
Perkey W. B.
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