Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1998-04-15
2000-04-04
Lee, John R.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250214A, H01S 4014
Patent
active
060464453
ABSTRACT:
A light detection system is provided including a switching circuit connected to an inductor shunted across a photoelectric cell and operative to switch between a light detection state and a charge storage state, wherein the light detection state causes a majority of current flowing through the inductor to bypass the charge storage circuit, and wherein the charge storage state causes a majority of current flowing through the inductor to pass through the charge storage circuit. In one embodiment of the present invention, the switching circuit is changed to the light detection state during a first period of time during which the laser beam is in the vicinity of the photoelectric cell and to the charge storage state during a second period of time during which the laser beam is remote from the photoelectric cell.
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Declaration of Timothy David Kaiser (Jul. 13, 1998).
Lee John R.
Spectra Precision, Inc.
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