Parallel plate beam splitter configuration in high index glass

Details Parallel plate beam splitter configuration in high index glass Parallel plate beam splitter configuration in high index glass

1997-08-20

1999-09-28

Nguyen, Thong

Optical: systems and elements

Polarization without modulation

By relatively adjustable superimposed or in series polarizers

349 5, 349 8, 349 9, 359487, 359496, G02B 530

Patent

active

059597739

ABSTRACT:
Color and/or polarization beam splitters are used in a multi-color light valve projection systems. The color and/or polarization beam splitters each include first and second prisms with a thin-film stack located therebetween. The prisms are made of glass which has an index of refraction between 1.65 and 1.85. The color and polarization beam splitters operate at an angle of incidence of 45 degrees. By operating at 45 degrees, the color and/or polarization beam splitters can be assembled in a compact and parallel manner and thereby reduce the size of the color and/or polarization beam splitter while increasing the contrast of the light valve projection system. The high index of refraction glass also produces a smaller optical path for a given physical path. The disadvantages associated with index of refraction oil prisms are also eliminated.

REFERENCES:
patent: 4127322 (1978-11-01), Jacobson et al.
patent: 4836649 (1989-06-01), Ledebuhr et al.
patent: 5153752 (1992-10-01), Kurematsu et al.
patent: 5229872 (1993-07-01), Mumola
patent: 5267029 (1993-11-01), Kurematsu et al.
patent: 5530489 (1996-06-01), Henderson et al.
patent: 5577826 (1996-11-01), Kasama et al.
patent: 5625491 (1997-04-01), von Gunten et al.

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