Diffusing imager and associated methods

Details Diffusing imager and associated methods Diffusing imager and associated methods

1999-04-23

2000-06-13

Spyrou, Cassandra

Optical: systems and elements

Holographic system or element

For synthetically generating a hologram

359 15, 359 19, G03H 108

Patent

active

060756276

ABSTRACT:
A diffusing function and a lens function are provided on a single surface. Such a structure may be formed from a computer generated hologram including free form regions having a phase shift associated therewith, i.e., the computer generated hologram being shifted within the free form regions by the phase shift relative to the computer generated hologram outside the free form regions. When the computer generated hologram includes zero and .pi. regions, the zero and .pi. regions may be transposed within the free form regions.

REFERENCES:
patent: 3604778 (1971-09-01), Burckhardt
patent: 5608695 (1997-03-01), Yamazaki
patent: 5808759 (1998-09-01), Okamori et al.
patent: 5815251 (1998-09-01), Ehbets et al.
patent: 5850300 (1998-12-01), Kathman et al.
Lee, Wai-Hon; "Method For Converting A Gaussian Laser Beam Into A Uniform Beam", Optics Communications Mar. 15, 1981 vol. 36. No. 6, See entire document.

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