Title:
PROJECTION DEVICE AND PORTABLE ELECTRONIC APPARATUS USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/140708
Kind Code:
A1
Abstract:
A projection device (100) and a portable electronic apparatus using the same, the
projection device (100) comprising a light source section (200), an optical engine
section (300) and a signal processing section (400). The light source section
(200) comprises an illuminating source (210) and a light control unit (105).
The optical engine section (300) comprises a polarization beam splitter (310)
and two reflective light modulation components (320,330). The signal processing
section (400) controls two reflective light modulation components (320,330)
to perform light modulation. The polarization beam splitter (310) comprises
a sub-wavelength grating (315) and two optical prisms (316,317), the sub-wavelength
grating (315) is formed on a separate substrate or a surface of the optical prisms
(316,317) by semiconductor process, and the sub-wavelength grating (315) and
the optical prisms (316,317) are designed so that the incident light is separated
into polarized light perpendicular to each other and incident on two reflective
light modulation components (320,330), respectively.
Inventors:
FAN BIN (CN)
SHAO JIANXIN (CN)
SHAO JIANXIN (CN)
Application Number:
PCT/CN2007/001737
Publication Date:
December 13, 2007
Filing Date:
May 29, 2007
Export Citation:
Assignee:
KINOPTICS TECHNOLOGIES INC (GB)
FAN BIN (CN)
SHAO JIANXIN (CN)
FAN BIN (CN)
SHAO JIANXIN (CN)
International Classes:
G02B27/18; G02B27/28; G03B21/00; G03B29/00
Foreign References:
| JP2003344946A | 2003-12-03 | |||
| CN1713022A | 2005-12-28 | |||
| US20050078372A1 | 2005-04-14 | |||
| CN1430074A | 2003-07-16 | |||
| CN1627126A | 2005-06-15 | |||
| CN1487356A | 2004-04-07 | |||
| CN1732403A | 2006-02-08 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (Tower E2 The Towers, Oriental Plaza, NO.1 East Chang An Ave., Dongcheng District, Beijing 8, CN)
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