Color separating and mixing element, video light producing...

Details Color separating and mixing element, video light producing... Color separating and mixing element, video light producing...

2007-05-15

2007-05-15

Perkey, W. B. (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S081000, C353S020000, C349S062000, C348S800000, C348S752000, C359S490020

Reexamination Certificate

active

10809477

ABSTRACT:
A color separating and mixing element comprises, in its transparent cube, a first optical function surface formed on a dividing surface for dividing the cube into two triangular prisms and a second optical function surface formed on another dividing surface. The first optical function surface has the function of transmitting both P-polarized light and S-polarized light with respect to red light, has the function of transmitting both P-polarized light and S-polarized light with respect to green light, and has the function of transmitting P-polarized light and reflecting S-polarized light with respect to blue light. The second optical function surface has the function of transmitting P-polarized light and reflecting S-polarized light with respect to red light, has the function of transmitting P-polarized light and reflecting S-polarized light with respect to green light, and has the function of transmitting both P-polarized light and S-polarized light with respect to blue light.

REFERENCES:
patent: 5903388 (1999-05-01), Sedlmayr
patent: 6042234 (2000-03-01), Itoh
patent: 2003/0011752 (2003-01-01), Ikeda et al.
patent: 2003/0160859 (2003-08-01), Roddy et al.
patent: 2004/0227899 (2004-11-01), Kurosaka et al.
patent: 2002-162520 (2002-06-01), None
patent: WO 2004/068197 (2004-08-01), None
Translation of WO 2004/068197 A1 to Okuhara, Kuninori 12, Aug. 2004, translated on May 2006 by the McElroy Translation Company.

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