Patent
1981-10-13
1984-02-14
Adams, Russell E.
354413, 35414911, G03B 700
Patent
active
044312865
ABSTRACT:
A photographic exposure control system of the type embodying scanning shutter blade elements includes a control blade selectively actuatable in accordance with whether the photographic apparatus is utilized in an ambient or artificial scene-lighted mode of operation for controlling which of two separate sets of photocell sweep secondary apertures in the shutter blade elements will direct scene light to a photoresponsive element while at the same time controlling a maximum effective primary aperture to which the shutter blade elements are allowed to progressively increase.
REFERENCES:
patent: 3757643 (1973-09-01), Burgarella
patent: 3942183 (1976-03-01), Whiteside
patent: 3972057 (1976-07-01), Whiteside
patent: 3972058 (1976-07-01), Johnson et al.
patent: 4008481 (1977-02-01), Whiteside
patent: 4023187 (1977-05-01), Shenk
patent: 4040069 (1977-08-01), Pope
patent: 4040072 (1977-08-01), Johnson et al.
patent: 4058818 (1977-11-01), Johnson et al.
patent: 4104653 (1978-08-01), Johnson et al.
patent: 4147418 (1979-04-01), Whiteside et al.
patent: 4192587 (1980-03-01), LaRocque et al.
patent: 4315675 (1982-02-01), Johnson
patent: 4351593 (1982-09-01), Johnson et al.
Adams Russell E.
Polaroid Corporation
Roman Edward S.
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