Light-measuring device for accurate and continuous measurement o

Details Light-measuring device for accurate and continuous measurement o Light-measuring device for accurate and continuous measurement o

1998-07-31

1999-10-19

Font, Frank G.

Optics: measuring and testing

Photometers

With variable light aperture size

356227, 356232, G01J 140

Patent

active

059698098

ABSTRACT:
A light-measuring device is disclosed for continuously and accurately measuring the intensity of light beams of from low intensity to high intensity. The intensity of a light beam to be measured is measured by a photodiode. A bias voltage is applied to the photodiode by a bias power source to improve the saturation characteristic. When the measured light beam is of high intensity, an analog switch and a photo MOS relay are switched on. When measuring a light beam with medium intensity, only the analog switch is turned off and a bias voltage is not applied to the photodiode. When measuring a light beam with low intensity, the bias voltage is not applied to the photodiode by switching off the photo MOS relay.

REFERENCES:
patent: 3973266 (1976-08-01), Kakunodate et al.
patent: 4914468 (1990-04-01), Naruse et al.

Affiliated with

Also associated with

Rating

Light-measuring device for accurate and continuous measurement o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light-measuring device for accurate and continuous measurement o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light-measuring device for accurate and continuous measurement o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2063160