Method and apparatus for the fine position adjustment of a laser

Details Method and apparatus for the fine position adjustment of a laser Method and apparatus for the fine position adjustment of a laser

1986-08-18

1987-12-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

219121LU, H01J 516

Patent

active

047135379

ABSTRACT:
On an essentially non-absorbing plate located in the focal plane of a laser beam to be adjusted, a plurality of marks is arranged in a definite pattern. The marks deflect the laser light incident upon them by refraction, scattering, diffraction or otherwise, and direct the deflected light onto one or several laser detectors. The detectors convert the light received into corresponding electrical signals which may used for the fine adjustment of the laser beam by an evaluating electronic device.

REFERENCES:
patent: 3453097 (1969-07-01), Hafner
patent: 3485996 (1969-12-01), Chiuo et al.
patent: 4140544 (1979-02-01), Sill
patent: 4156124 (1979-05-01), Macken et al.
patent: 4328410 (1982-05-01), Slivinsky et al.
patent: 4539481 (1985-09-01), Troukens et al.

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