Patent
1991-04-08
1991-12-03
Hix, L. T.
G03B 118
Patent
active
050703501
ABSTRACT:
Insertion of a planar element of plastic into the optical path between camera taking lens and the film, or rack and pinion rotation of the lens is a threaded lens mount, under the control of the device by which the user selects that particular pseudo or other image, adjusts the compromise setting of the lens to provide improved focus in the film area receiving the selected type of image.
REFERENCES:
patent: 2289133 (1942-07-01), Lessler et al.
patent: 3048092 (1962-08-01), Gottschalk
patent: 3598031 (1971-08-01), Harvey
patent: 3738241 (1973-06-01), Behnsen
patent: 4426145 (1984-01-01), Hashimoto
patent: 4650304 (1987-03-01), Harvey
Blankenship Howard B.
Eastman Kodak Company
Fields Roger A.
Hix L. T,.
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