Coherent light generators – Particular beam control device – Having particular beam control circuit component
Patent
1985-12-30
1988-05-17
Davie, James W.
Coherent light generators
Particular beam control device
Having particular beam control circuit component
372 31, 372 38, H01S 313
Patent
active
047456094
ABSTRACT:
A stabilized laser device has a semiconductor laser, an optical detector for performing photoelectrical conversion of laser light from the laser and producing a detection signal, and a variable voltage power source for outputting an analog voltage signal as a preset value for the laser output light. A differential amplifier produces a differential signal representing the difference between the detection signal and the preset analog voltage signal, and a gate circuit supplies a clock pulse from a clock pulse generator to one of the up and down terminals of an up/down counter in accordance with the output signal from the differential amplifier. A D/A converter converts the output digital signal from the counter to an analog signal and supplies it to a driver circuit for the laser. The D/A converter generates an analog signal which corresponds to the product of the output digital signal from the counter and the preset analog voltage signal from the variable voltage power source.
REFERENCES:
patent: 4344173 (1982-08-01), Straus
patent: 4577320 (1986-03-01), Yoshikawa et al.
patent: 4580044 (1986-04-01), Hongo et al.
Davie James W.
Olympus Optical Co,. Ltd.
LandOfFree
Stabilized laser device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stabilized laser device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilized laser device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1886484