Plate-like polarizing element, a polarizing conversion unit prov

Details Plate-like polarizing element, a polarizing conversion unit prov Plate-like polarizing element, a polarizing conversion unit prov

1992-04-08

1998-05-12

Shafer, Ricky D.

Optical: systems and elements

Polarization without modulation

Polarization by reflection or refraction

359487, 359495, 359497, G02B 530, G02B 2728

Patent

active

057514801

ABSTRACT:
This specification discloses a polarizing element for dividing light into first and second polarized lights differing in polarized state from each other by a polarizing dividing surface, directing the first polarized light in a first direction, reflecting the second polarized light by a reflecting surface and directing it in the first direction, and varying the polarized state of at least one of the first and second polarized lights to thereby make the polarized states of the first and second polarized lights coincident with each other, characterized in that the polarizing dividing surface is disposed on one surface of a plane parallel plate and the reflecting,surface is disposed on the other surface of the plane parallel plate, and the light enters obliquely from the one surface or the other surface. The specification also discloses a polarizing conversion unit provided with such polarizing element, and a projector provided with such polarizing conversion unit.

REFERENCES:
patent: 2748659 (1956-06-01), Geffcken et al.
patent: 2811077 (1957-10-01), Wiemer et al.
patent: 3449051 (1969-06-01), Levitt
patent: 3743378 (1973-07-01), Bousky
patent: 3743380 (1973-07-01), Fugitt
patent: 3876285 (1975-04-01), Schwarzmuller
patent: 4020336 (1977-04-01), Linder
patent: 4358200 (1982-11-01), Heemskerk et al.
patent: 4392729 (1983-07-01), Tsunfugi
patent: 4560999 (1985-12-01), Tokuhara
patent: 4641926 (1987-02-01), Shirasaki
patent: 4863246 (1989-09-01), Anthon
patent: 4864390 (1989-09-01), McKechnie et al.
patent: 4989076 (1991-01-01), Owada et al.
patent: 5566367 (1996-10-01), Mitsutake et al.

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