Registers – Coded record sensors – Particular sensor structure
Patent
1976-03-11
1978-01-03
Hix, L. T.
Registers
Coded record sensors
Particular sensor structure
354 32, 235 647, G03B 708, G06C 300
Patent
active
040670244
ABSTRACT:
An improved calculator structure primarily for use with photographic apparatus is disclosed. A base member carries therein certain electronics including a light sensing device which receives light from an electronic flash associated with a camera and reflected from the subject to be photographed through an aperture in the base and through one of a plurality of apertures carried by a top member which is rotatable with respect to the base about a first axis. Carried by the base member are a first set of indicia indicative of the maximum distance from camera to subject available from the electronic flash being used. The first set of indicia are viewable through a window carried by the top member. A middle member is carried by the top member and is rotatable about a second axis displaced from the first axis. The middle member carries a second set of indicia indicative of various ASA film speeds and these are also viewable through the window in the top member. The middle member also carries a third set of indicia indicative of various F stop settings. These are viewable through a cutaway portion of the top member and in cooperation with an indicia bearing means mounted on the base member.
REFERENCES:
patent: 1259373 (1918-03-01), Dice
patent: 2557478 (1951-06-01), Smith
patent: 2879691 (1959-03-01), Faulhaber
patent: 2999635 (1961-09-01), Robertson
patent: 3769888 (1973-11-01), Quinn
Gellner M. L.
Hix L. T,.
Honeywell Inc.
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