Light chopper assembly

Details Light chopper assembly Light chopper assembly

1988-10-28

1990-03-20

Arnold, Bruce Y.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

350274, 350315, 358 42, 356233, 250233, G02B 522

Patent

active

049096001

ABSTRACT:
A light chopper wheel for use in a video system that is capable of producing either black and white or full color images. The wheel is formed of two circular sheet metal plates that are joined in back-to-back contact. A first series of circumferentially spaced color filter windows are located about a first diameter on the wheel and a second series of clear windows are circumferentially spaced about a second diameter on the wheel so that a clear window is radially adjacent each color filter window. Recesses are stamped in the back of each plate behind each color filter window and filters are mounted between the plates within the recesses.

REFERENCES:
patent: 2844987 (1958-07-01), Parker
patent: 3299274 (1967-01-01), Hoelter
patent: 3493748 (1970-02-01), Tajima
patent: 3603722 (1971-09-01), Graham
patent: 3856418 (1974-12-01), Levine
patent: 4165919 (1979-08-01), Little

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