Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1989-11-17
1991-03-05
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
369 4423, G01J 120
Patent
active
049980114
ABSTRACT:
An optical element microstructure detects changes in the propagation angle of an optical beam on a local basis. The optical element microstructure preferably comprises an array of structures which are small compared to the size of the beam. Detection is done on a local basis, with each optical element in the microstructure array perturbing the optical beam in a predictable manner. By virtue of the number of optical sensing elements, the microstructure array is less sensitive to flaws in the optical elements, as compared to a single optical component placed in the path of the light. In addition, the microstructure lends itself to mass production by replication, and other low cost methods such as injection molding.
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Applied Magnetics Corporation
Nelms David C.
Shami Khaled
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