Automatic ranging optical power monitoring system

Details Automatic ranging optical power monitoring system Automatic ranging optical power monitoring system

1996-02-02

1997-03-11

Epps, Georgia Y.

Optics: measuring and testing

Photometers

Photoelectric

356224, 356228, G01J 142

Patent

active

056107099

ABSTRACT:
A high speed, automatic calibration system of laser (or other light source) sensitometers capable of a wide range of power measurements, of densitometers and of other optical power measuring systems, and particularly to an automatic gain scaling circuit for use in the same. The system measures optical power incident on a photodiode detector in the course of calibrating or using a sensitometer and automatically and rapidly selects the appropriate gain for the operational amplifier. An automatic gain scaling function performed in gain scale logic rapidly selects the proper gain of a transimpedance operation amplifier operating as a current to voltage converter and delivers an analog voltage signal within a range between an upper limit and a lower limit. An over range error signal is generated in response to an upper out of limit signal generated at the minimum gain set by said gain scale logic. A low resolution error signal is generated in response to a lower out of limit signal generated at the maximum gain set by the gain scale logic.

REFERENCES:
patent: 3687558 (1972-08-01), Rex
patent: 3818198 (1974-06-01), Walker et al.
patent: 3898583 (1975-08-01), Shuey
patent: 4306807 (1981-12-01), Sakane et al.
patent: 4698817 (1987-10-01), Burley
patent: 4763334 (1988-08-01), Shimada et al.
patent: 4780607 (1988-10-01), Blaszuk
patent: 4877311 (1989-10-01), Shernoff
patent: 4903276 (1990-05-01), Ross
patent: 5033061 (1991-07-01), Hobart et al.
patent: 5040163 (1991-08-01), Sasaki et al.
patent: 5067117 (1991-11-01), Shimizu et al.
patent: 5097473 (1992-03-01), Taguchi
patent: 5115207 (1992-05-01), Fry
patent: 5140601 (1992-08-01), Shimada et al.
patent: 5184189 (1993-02-01), Hawsey et al.
patent: 5247167 (1993-09-01), Bargerhuff et al.
patent: 5264911 (1993-11-01), Nakane et al.
patent: 5267071 (1993-11-01), Little et al.
patent: 5268914 (1993-12-01), Yamamuro et al.
patent: 5276697 (1994-01-01), Davis
patent: 5303249 (1994-04-01), Weimel
patent: 5319656 (1994-06-01), Geller
patent: 5327210 (1994-07-01), Okui et al.
patent: 5347503 (1994-09-01), Koyama et al.
patent: 5548398 (1996-08-01), Gaboury

Affiliated with

Also associated with

Rating

Automatic ranging optical power monitoring system 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 ranging optical power monitoring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic ranging optical power monitoring system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-447573