G - Physics – 02 – B
Patent
G - Physics
02
B
375/49, 88/96.4
G02B 26/10 (2006.01) G02B 27/18 (2006.01) G02B 27/28 (2006.01) G02F 1/1335 (2006.01) G09F 9/00 (2006.01) G09G 3/02 (2006.01) H04N 5/74 (2006.01) H04N 9/31 (2006.01)
Patent
CA 2032680
An image display apparatus has a radiation source, generator for generating an image by modulating a polarized light beam and directing device for directing a light beam from the radiation source toward the generator. The directing device has a conversion optical system for converting the beam from the radiation source into the polarized light beam. The conversion optical system has a polarizing beam splitter for splitting the beam from the radiation source into a first and second beams. In the conversion optical system, a 1/4 wavelength plate and a mirror are arranged so that the plane of polarization of the first beam is rotated to generate a third beam with the plane of polarization same as that of the second beam. The third beam is directed toward the generator through the polarizing beam splitter while the second beam is also directed toward the generator.
Minoura Nobuo
Mitsutake Hideaki
Canon Kabushiki Kaisha
Ridout & Maybee Llp
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