Enhanced raster scanning assembly

Details Enhanced raster scanning assembly Enhanced raster scanning assembly

1997-12-24

2000-05-02

Spyrou, Cassandra

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 17, 359572, 359196, G02B 532

Patent

active

060579471

ABSTRACT:
An optical assembly utilizing a novel optical element. The assembly includes a tunable source of input radiation; an optical element that can receive at least a portion of the input radiation and comprises a manifold having at least two independent surfaces, in which at least a portion of each independent surface is selected from the group consisting of a reflective structure and a diffractive structure, and the independent surfaces are geometrically configured so that a portion of incident radiation to the manifold is diffracted at least twice in an angular sense that can increase a tuning sensitivity of an angular deviation of the incident radiation exiting the manifold; and, a scanner means which can accept and redirect a portion of the radiation output by the optical element for producing an illumination pattern.

REFERENCES:
patent: 4938550 (1990-07-01), Inagaki et al.
patent: 5223956 (1993-06-01), Kramer et al.
patent: 5608563 (1997-03-01), Matsumura et al.

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