Gaussian laser beam filter

Details Gaussian laser beam filter Gaussian laser beam filter

1985-02-28

1986-08-12

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Holographic process, composition, or product

Composition or product or process of making the same

430 1, 430 4, 430321, 350 38, 350 386, 350 367, 372 9, G03H 110, G03H 118

Patent

active

046056068

ABSTRACT:
A method for constructing an optical filter for use in a holographic scanner includes exposing a photographic film to a laser, developing the film and reinserting the developed film into the unexpanded output beam of the laser to provide a uniform illumination of the outputted beam. The filter is positioned in the reference beam in the construction of a hologram used in the holographic scanner.

REFERENCES:
patent: 3149968 (1964-09-01), Stephens
patent: 3465347 (1969-09-01), Hudson
patent: 3582326 (1971-06-01), Smithgall
patent: 3676129 (1972-07-01), Ragland

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