Image generating apparatus

Details Image generating apparatus Image generating apparatus

2011-08-23

2011-08-23

Pritchett, Joshua L (Department: 2872)

Optical: systems and elements

Compound lens system

With curved reflective imaging element

C359S362000

Reexamination Certificate

active

08004754

ABSTRACT:
The present invention relates to an image generating apparatus (1) which comprises an illumination unit (20) having an intermediate face (21, S), as well as an image modulator (30) for generating an image (I). In addition a deflecting means (10) for deflecting a received light beam (L) of primary illumination light (L1) to said illumination unit (20) is provided in order to irradiate said intermediate face (21, S). Said deflecting means (10) is adapted to have—during the process of irradiating said intermediate face (21, S)—said light beam (L) subsequently in time irradiate different portions of said intermediate face (21, S) in order to thereby reduce the speckle effect.

REFERENCES:
patent: 4970546 (1990-11-01), Suzuki et al.
patent: 6323984 (2001-11-01), Trisnadi
patent: 6577429 (2003-06-01), Kurtz et al.
patent: 2005/0057727 (2005-03-01), Troyer
patent: 2006/0125969 (2006-06-01), Chilla et al.
patent: 2007/0291240 (2007-12-01), Hintersteiner et al.
patent: WO 2006/065524 (2006-06-01), None
patent: WO 2006/065537 (2006-06-01), None
J. W. Goodman, “Some Fundamental Properties of Speckle”, J. Opt. Soc. Am., vol. 66, No. 11, Nov. 1976, pp. 1145-1150.
Jahja I. Trisnadi, “Speckle Contrast Reduction in Laser Projection Displays”, Silicon Light Machines, 7 pages.
Office Action issued Feb. 15, 2011, in Chinese Patent Application No. 200810090044.2, filed Mar. 31, 2008 (English Translation only).

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