Patent
1989-07-20
1991-07-23
Henry, Jon W.
350317, 350318, G02B 522, G02B 700
Patent
active
050338200
ABSTRACT:
In a filter conversion device employed in an optical system having a function for locating one of a plurality of color filter units in an optical path frame member is provided supporting a plurality of filter units and being arranged so as to be movable in a predetertmined plane between a light sending element and a light receiving element. A mechanism for controlling the frame member to move horizontally and vertically in the plane is also provided. Thus, the desired filter unit is located in the optical path without requiring a large space for movement.
REFERENCES:
patent: 3028483 (1962-04-01), Simmon
patent: 3912362 (1975-01-01), Bentley
patent: 4588266 (1986-05-01), Komoto
patent: 4746955 (1988-05-01), Slayton et al.
patent: 4825252 (1989-04-01), Suzuki et al.
Asahi Kogaku Kogyo Kabushiki Kaisha
Henry Jon W.
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