Doublet based large aperture free space imaging system

Details Doublet based large aperture free space imaging system Doublet based large aperture free space imaging system

1998-02-11

2000-04-25

Spyrou, Cassandra

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

359478, 359565, 359742, 359743, 353 38, G03B 2160, G03B 2114, G02B 2722, G02B 308

Patent

active

060551003

ABSTRACT:
A free space imaging system utilizing a doublet form of optic. The doublet is configured with two large Fresnel lenses configured such that their echelon groove components are mutually oppositely disposed within the optical path of the system. The method includes an arrangement wherein the output focal plane deliberately is curved and generated with a relatively wide field of view to evoke an emulation of three-dimensionality.

REFERENCES:
patent: 4391495 (1983-07-01), Mazurkewitz
patent: 4484219 (1984-11-01), Kirk
patent: 4566031 (1986-01-01), Kirk
patent: 4671625 (1987-06-01), Noble
patent: 5379133 (1995-01-01), Kirk
Cox, Arthur. Application of Fresnel Lenses to Virtual Image Display. Proceedings of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA, USA, pp. 130-137, Aug. 31, 1978

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