Optical rearview system for vehicle

Details Optical rearview system for vehicle Optical rearview system for vehicle

1997-08-29

1999-06-22

Spyrou, Cassandra

Optical: systems and elements

Diffraction

From grating

359838, 359871, B60R 108

Patent

active

059148152

ABSTRACT:
An optical rearview system for a vehicle includes a reflective element which reflects light incident thereon and at least one diffraction grating in the path of light from an object rearward of the vehicle towards the reflective element. The at least one diffraction grating diffracts light from the object wherein light passing through the diffraction grating is directed towards the reflective element. Such optical rearview system eliminates secondary reflections and flare which have precluded successful commercialization of previously known optical rearview systems.

REFERENCES:
patent: 3441335 (1969-04-01), Johnson
patent: 3809462 (1974-05-01), Baumgardner et al.
patent: 4988152 (1991-01-01), Wreede
patent: 5278695 (1994-01-01), Gebelein et al.
patent: 5559640 (1996-09-01), Vachss et al.
patent: 5594593 (1997-01-01), Milner
patent: 5617245 (1997-04-01), Milner
G. J. Swanson, "Binary Optics Technology: The Theory and Design of Multi-Level Diffractive Optical Elements", Technical Report 854, M.I.T. Lincoln Laboratory, Lexington, MASS., pp. 1-47, Aug. 1989.

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