Title:
ANGLED ILLUMINATION FOR A SINGLE ORDER GLV BASED PROJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO2002084397
Kind Code:
A3
Abstract:
A display apparatus projects a two dimensional image onto a display screen and includes illumination optics, a light modulator, separating optics and scanning optics. The light modulator is optically coupled to the illumination optics such that in operation the illumination optics illuminate the light modulator with an off-axis illumination and further such that the light modulator directs light onto an optic axis for a bright pixel, thereby forming on-axis light, and away from the optic axis for a dark pixel, thereby forming off-axis light. The separating optics are coupled to the light modulator and separate the off-axis and on-axis light where the on-axis light produces a real and virtual image that is displayed by the projection and scanning optics.
Inventors:
AMM DAVID T
Application Number:
PCT/US2002/009604
Publication Date:
April 03, 2003
Filing Date:
March 27, 2002
Export Citation:
Assignee:
SILICON LIGHT MACHINES INC (US)
International Classes:
G02B19/00; G02B27/18; G02B26/08; G03B21/00; G03B21/14; (IPC1-7): G02B27/18; G02B27/54
Domestic Patent References:
| WO1997026569A2 | 1997-07-24 |
Foreign References:
| US5629801A | 1997-05-13 | |||
| US5982553A | 1999-11-09 | |||
| EP1014143A1 | 2000-06-28 | |||
| EP0436738A1 | 1991-07-17 | |||
| US6091521A | 2000-07-18 | |||
| US4724467A | 1988-02-09 | |||
| US5825443A | 1998-10-20 | |||
| US5798805A | 1998-08-25 | |||
| US6025859A | 2000-02-15 |
Other References:
GLASER T ET AL: "BEAM SWITCHING WITH BINARY SINGLE-ORDER DIFFRACTIVE GRATINGS", OPTICS LETTERS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, US, vol. 23, no. 24, 15 December 1998 (1998-12-15), pages 1933 - 1935, XP000802142, ISSN: 0146-9592
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