Barrier materials for laser drilling

Details Barrier materials for laser drilling Barrier materials for laser drilling

1988-06-13

1991-04-30

Maples, John S.

Compositions

Light transmission modifying compositions

252304, 21912162, 2191217, F21V 900, B01F 300, B23K 2604, B23K 2600

Patent

active

050116266

ABSTRACT:
A barrier for use in laser drilling. The barrier is placed in front of those surfaces that one wishes to protect from the laser beam. The barrier comprises a thixotropic medium, for example polyacrylamide suspension in water. The medium includes material which will disperse the laser light and material which will emit light when exposed to the laser light. The light emitter materials could be luminescent materials, phosphorescent materials, or fluorescent materials.

REFERENCES:
patent: 4202697 (1980-05-01), Van Goethem et al.
patent: 4282928 (1981-08-01), McDonald et al.
patent: 4657345 (1987-04-01), Gordon
patent: 4689307 (1987-08-01), Schwartz
patent: 4766048 (1988-08-01), Hisamura
patent: 4873414 (1989-10-01), Ma et al.

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