Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1988-02-16
1989-11-07
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
372 29, G01J 132
Patent
active
048794597
ABSTRACT:
A controller for controlling the output intensity of a semiconductor laser used in a laser printer or the like in such a manner that the desired adjustment value is obtained, even in the presence of noise in a signal P.sub.D indicating the value of the detected intensity. An adjustment value is provided depending on the results of a comparison between the signal P.sub.D and a set value P.sub.S. The adjustment value is decreased when P.sub.S <P.sub.D and increased when P.sub.D <P.sub.S. The current through the semiconductor laser is adjusted in accordance with this set value.
REFERENCES:
patent: 4605848 (1986-08-01), Ogawa
patent: 4647981 (1987-03-01), Froelich
patent: 4677287 (1987-06-01), Ejima
patent: 4692606 (1987-09-01), Sakai et al.
patent: 4695714 (1987-09-01), Kimizuka et al.
Asahi Kogaku Kogyo Kabushiki Kaisha
Shami Khaled
Westin Edward P.
LandOfFree
Automatic power controller for semiconductor laser does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic power controller for semiconductor laser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic power controller for semiconductor laser will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-85227