Laser beam product marking system

Details Laser beam product marking system Laser beam product marking system

1984-05-16

1986-04-29

Goldberg, E. A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346108, 346110R, 358237, G01D 900, G01D 942

Patent

active

045860530

ABSTRACT:
The invention concerns a system for marking information on items particularly mass produced items. The message to be marked is generated on a high resolution cathode ray tube screen. The image is then coupled into the input end of a liquid crystal light valve and the incoherent image converted to a coherent image by using a laser beam and then separated by a light polarizer into positive and negative images. The separated images are then used to mark a message on the surface of an object.

REFERENCES:
patent: 3506782 (1970-04-01), Anwyl
patent: 3723651 (1973-03-01), Gorog
patent: 3990783 (1976-11-01), Kohashi
patent: 4467335 (1984-08-01), Schmidt

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