Optics: image projectors – Miscellaneous
Reexamination Certificate
2005-04-19
2005-04-19
Dowling, William C. (Department: 2851)
Optics: image projectors
Miscellaneous
C353S069000
Reexamination Certificate
active
06880939
ABSTRACT:
An optical projection system includes an image source that is configured to generate an array of image pixels. A lens assembly is configured to project the array of image pixels onto a hemispherical surface at a projection angle greater than 180°. The lens assembly may include a wide-angle lens assembly and an image relay lens assembly that is configured to reduce dispersion in the array of image pixels between the image source and the wide-angle lens assembly. The wide-angle lens assembly may include a meniscus lens assembly and a wavefront shaping lens assembly. The lens assembly may be further configured to project the array of image pixels onto the hemispherical surface such that there is a constant angular separation between adjacent image pixels. An optical projection system may also include two image sources that are configured to generate first and second arrays of image pixels and two lens assemblies that are configured to respectively project the first and second arrays of image pixels at projection angles that are greater than 180° onto a surface in opposite directions of each other. The combination of the first and second arrays of image pixels may cover a continuous, 360° portion of the hemispherical surface.
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PCT International Search Report for PCT/US 02/09706 dated Feb. 27, 2003.
Balu Suresh
Colucci D'nardo
Idaszak Raymond L.
McConville David
Zobel, Jr. Richard W.
Dowling William C.
Elumens Corporation
Myers Bigel & Sibley & Sajovec
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