Optical beam-splitting arrangements on image side of a lens

Details Optical beam-splitting arrangements on image side of a lens Optical beam-splitting arrangements on image side of a lens

1986-08-20

1989-04-18

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821328, 358293, H04N 1028, H04N 315, H04N 5335

Patent

active

048232025

ABSTRACT:
A picture image of a linear area to be read out of an original picture is projected and focused on a plurality of line sensors. The light flux transmitted through a projecting lens is divided into two light fluxes, along a plane containing the linear area of the original picture and an optical axis of the lens, by a light dividing apparatus disposed at the image side of the projecting lens. The light dividing apparatus thus provides two light fluxes which are projected and focused on respective line sensors. The light dividing apparatus comprises one or two flat mirrors which are so disposed that one side edge of each mirror coincides with or is disposed near to the plane along which the entire light flux is divided into two parts. The reflecting plane or reflecting planes of the mirrors are inclined at desired predetermined angle(s) with respect to the optical axis of the projecting lens in order to project the light onto the light sensors.

REFERENCES:
patent: 4005285 (1977-01-01), Price
patent: 4080633 (1978-03-01), Starkweather
patent: 4143403 (1979-03-01), Ohnishi
patent: 4272684 (1981-06-01), Seachman
patent: 4415934 (1983-11-01), Konishi
patent: 4531054 (1985-07-01), Suzuki
patent: 4725729 (1988-03-01), Morizumi
patent: 4786821 (1988-11-01), Uchida

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