Projection device and fabrication method of a polarization grating

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United States of America Patent

PATENT NO 9743054
SERIAL NO

14205382

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Abstract

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A projection device including a light source, a reflective spatial polarization modulator, a polarization grating, and a projection lens is provided. The light source is configured to provide a light beam. The reflective spatial polarization modulator is disposed on a path of the light beam and configured to reflect the light beam and modulate a polarization state of the light beam. The polarization grating is disposed on the path of the light beam between the light source and the reflective spatial polarization modulator, wherein the reflective spatial polarization modulator reflects the light beam from the reflective spatial polarization modulator back to the polarization grating. The projection lens is disposed on the path of the light beam from the reflective spatial polarization modulator, wherein the polarization grating is disposed on the path of the light beam between the reflective spatial polarization modulator and the projection lens.

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Patent Owner(s)

Patent OwnerAddress
HIMAX DISPLAY INCNO 26 ZILIAN RD XINSHI DIST TAINAN CITY 74148
THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYCLEAR WATER BAY KOWLOON

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kwok, Hoi-Sing Kowloon, HK 41 258
Li, Yuet-Wing Tainan, TW 24 37
Tan, Li Kowloon, HK 77 378

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