Title:
画像投影システム
Document Type and Number:
Japanese Patent JP4817570
Kind Code:
B2
Abstract:
An electronic projector has a projection system that includes a spatial light modulator (SLM) for importing image information to the projected light beam. The light beam leaving the SLM is prepolarized in a defined orientation and the projected light is polarized in the same orientation so as to effectively block any light that has been scattered within the projector and become depolarized. The SLM may be a digital mirror device (DMD). Reflective surfaces within the projector may be covered or coated with material that alters the polarization of reflected stray light from the defined orientation or depolarizes the reflected stray light.
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Inventors:
Gibbon, Michael, A.
Reed, stephen, charles
Reed, stephen, charles
Application Number:
JP2001510494A
Publication Date:
November 16, 2011
Filing Date:
July 06, 2000
Export Citation:
Assignee:
Imax corporation
International Classes:
G02B27/18; G02F1/13; G02B27/28; G02F1/1335; G02F1/13357; G03B21/00; H04N9/31
Domestic Patent References:
| JPH08327965A | 1996-12-13 | |||
| JPH1114942A | 1999-01-22 | |||
| JPH1115074A | 1999-01-22 | |||
| JPH1082959A | 1998-03-31 | |||
| JPH09230258A | 1997-09-05 | |||
| JPH10333599A | 1998-12-18 |
Attorney, Agent or Firm:
Kijuro Kawakita