Tri-color separating and composing optical system

Details Tri-color separating and composing optical system Tri-color separating and composing optical system

1992-06-24

1994-04-19

Bertsch, Richard A.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359637, 359497, 359483, G02B 2714, G02B 530

Patent

active

053051467

ABSTRACT:
Color separating or composing optical system having an optical axis wherein at least one color filter is placed obliquely to the optical axis to perform color separation or composition by color-selective reflection and passing of lights proceeding along the optical axis, a cylindrical lens is placed in an optical path of a light passing the color filter, another feature of this invention is that two color filters are placed obliquely with respect to the optical axis to perform color separation or composition by color-selective reflection and passing of lights proceeding along the optical axis, and are arranged in configuration as such that an imaginary plane defined to include the optical axis and a line perpendicular to one of the two color filters, is perpendicular to another imaginary plane defined to include the optical axis and another line perpendicular to the other of the two color filters.

REFERENCES:
patent: 3794407 (1974-02-01), Nishimura
patent: 3914787 (1975-10-01), Sekiguchi
patent: 4541688 (1985-09-01), Watt et al.
patent: 5130826 (1992-07-01), Takanashi et al.
patent: 5200857 (1993-04-01), Matsushita

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