G - Physics – 03 – B
Patent
G - Physics
03
B
G03B 21/28 (2006.01) G02B 5/30 (2006.01) G02B 27/10 (2006.01) G02B 27/18 (2006.01) G02B 27/22 (2006.01) G02B 27/28 (2006.01) G02F 1/13357 (2006.01) H04N 9/31 (2006.01) G02F 1/1335 (2006.01)
Patent
CA 2058514
A polarization illumination device and projector having the polarization illumination device are provided. An example of the polarization illumination device comprises an illuminator and a polarized including a polarization splitting surface and a reflecting surface, the splitting surface and the reflecting surface form an inverted V shape. The splitting surface splits part of the light into a transmitted component and a reflected component and directs the former in a first direction and the latter toward the reflecting surface. The reflecting surface reflects a remaining part of the light and directs it toward the splitting surface. The splitting surface splits the remaining part of the light into a transmitted component and a reflected component. The former directed toward a second direction different from the first direction, and the latter is returned to the illuminator. The illuminator modulates a plane of each returned reflected light component and causes each returned reflected component to be incident on the polarizer again.
Kimura Kazumi
Minoura Nobuo
Canon Kabushiki Kaisha
Ridout & Maybee Llp
LandOfFree
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