Camera having multizone shutter mechanism

Details Camera having multizone shutter mechanism Camera having multizone shutter mechanism

1977-01-03

1978-08-08

Hix, L. T.

354 50, 354236, 354258, G03B 708, G03B 946

Patent

active

041060342

ABSTRACT:
A shutter mechanism for a camera has a plurality of shutter elements each of which is associated with a predetermined elemental area of a photosensitive film frame located behind the shutter mechanism. Each of the shutter elements is selectively operable independently of the other elements for transmitting light from a scene being photographed to the film area with which the shutter element is associated. Initial acutation of the shutter mechanism causes simultaneous opening of each shutter element for initiating exposure. Then, each shutter element is independently closed in accordance with a predetermined amount of light being incident on the given film area. Thus, the amount of light incident on various elemental areas of the film frame is independently controlled to compress the range of scene brightness to within the linear range of the film.

REFERENCES:
patent: 1416502 (1922-05-01), Payne
patent: 3116670 (1964-01-01), Ball
patent: 3122077 (1964-02-01), Splendore
patent: 3477787 (1969-11-01), VAN Wijngarrt et al.
patent: 3500729 (1970-03-01), Rentschler
patent: 3555987 (1971-01-01), Browning
patent: 3712202 (1973-01-01), Lang
patent: 3971046 (1976-07-01), Nobusawa

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