Color separation optical system

Details Color separation optical system Color separation optical system

1998-01-05

1999-07-27

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

G02B 2714

Patent

active

059300485

ABSTRACT:
Each reflective wall of two pairs of parallel reflective walls, which compose a four-wall reflection optical system, consists of three layers of a first dichroic mirror which reflects blue light, a second dichroic mirror which reflects green light, and a third dichroic mirror which reflects red light. In the four-wall reflection optical system, the total number of reflections varies according to the ratio of lengths of two pairs of the parallel reflective walls. For this reason, by selecting the number of reflections, it is possible to form an optical path of desired length and to color-separate the incident light into three rays of the three primary colors at desired separation intervals. A color scanner optical system can easily be constructed by using the color separation optical system and a 3-line CCD.

REFERENCES:
patent: 5541771 (1996-07-01), Bohn

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