Optics: image projectors – Miscellaneous
Patent
1997-06-11
2000-07-25
Dowling, William
Optics: image projectors
Miscellaneous
359446, 359227, G03B 2114
Patent
active
060929006
ABSTRACT:
A projection surface includes scattering microparticles that are in constant motion in relation to each other and to a source of laser radiation in a laser projection system. The microparticles reduce the formation of spots that normally occur when viewing the contents of images which are uniformly illuminated by means of laser projection and which are reflected off a projection surface. The microparticles are formed in a suspension fluid and move due to Brownian molecular motion. The fluid is warmed to further increase motion of the microparticles or a piezoelectric force or other mixing mechanism is used to cause turbulence that also increases motion and mixing of the microparticles.
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Diedrich Frank
Dorsel Andreas N.
Dowling William
Hewlett--Packard Company
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