Method and apparatus for acoustic supervision of adjustment oper

Details Method and apparatus for acoustic supervision of adjustment oper Method and apparatus for acoustic supervision of adjustment oper

1985-06-11

1987-09-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

356153, 356400, G01J 120

Patent

active

046941525

ABSTRACT:
A method and apparatus for acoustic supervision of adjustment of a light bundle composed of component beams with respect to its intensity distribution in an expanse of a reference plane situated in a beam path at right angles to an optical axis of the light bundle. Intensity values I of the component beams lying at a margin of the light wave are measured and the differential intensity values .DELTA.I are identified according to amount and operational sign. An oscillation is generated whose parameters are modified dependent on the amounts and operational signs of the respective differential intensity values. The modified oscillation is made audible as a distinguishable measuring tone for amounts and operational signs of the differential intensity values .DELTA.I.

REFERENCES:
patent: 3907435 (1975-09-01), Roodvoets
patent: 4081216 (1978-03-01), Cook
patent: 4126834 (1978-11-01), Coppock
Applied Optics, vol. 18, No. 17, Sep. 1, 1979, "Acoustooptic Modulator Intensity Servo" by Howard P. Layer, pp. 2947-2949.

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