Title:
PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2013/018441
Kind Code:
A1
Abstract:
Light emitted from a light source (2) falls incident on an optical waveguide plate (3) that emits the light from a light-emitting surface (32). A prism sheet (5) reflects light having a specified angle within the light emitted from the light-emitting surface (32) so that the reflected light falls incident on the optical waveguide plate (3), and transmits light having other angles. A polarization control element (8) is provided parallel to the light-emitting surface (32) and between a 1/4-wavelength plate (12) and a reflective liquid crystal display element (1). The polarization control element (8) separates light emitted from the 1/4-wavelength plate (12) into a first polarized light transmitted as illumination light incident on the reflective liquid crystal display element (1) and a second polarized light (2) reflected so as to fall incident on the optical waveguide plate (3), and the polarization control element (8) reflects the light modulated and emitted by the reflective liquid crystal display element (1) towards an imaging lens (10).
Inventors:
KOBAYASHI MANABU (JP)
Application Number:
PCT/JP2012/064967
Publication Date:
February 07, 2013
Filing Date:
June 12, 2012
Export Citation:
Assignee:
JVC KENWOOD CORP (JP)
KOBAYASHI MANABU (JP)
KOBAYASHI MANABU (JP)
International Classes:
G02F1/13; G02F1/13357; G02F1/1335; G03B21/00; G03B21/14
Foreign References:
| JP2008165066A | 2008-07-17 | |||
| JP3539904B2 | 2004-07-07 |
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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Claims:
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