Particle detection system with coincident detection

Details Particle detection system with coincident detection Particle detection system with coincident detection

1992-11-24

1994-07-12

Rosenberger, Richard A.

Optics: measuring and testing

Inspection of flaws or impurities

Having predetermined light transmission regions

2502082, G01N 2188

Patent

active

053293517

ABSTRACT:
The particle detection system detects particles or flaws on the surface of an article. The system has a source of light directed against the surface of the article and a detector for detecting light scattered from the article and indicative of the presence of particles or flaws present on the article. The detector includes a light collector positioned for receiving and collecting light scattered from the surface of the article, a light splitter cooperating with the collector for dividing the collected light into first and second light collect components, first and second photodetectors positioned for receiving respectively first and second like light components, and an electrical circuit for combining the output signals from the first and second photodetectors to form a combined output signal with a higher signal-to-noise ratio than traditional systems.

REFERENCES:
patent: 4197011 (1980-04-01), Hudson
patent: 4376583 (1983-03-01), Alford et al.
patent: 4423331 (1983-12-01), Koizumi et al.
patent: 4464050 (1984-08-01), Kato et al.
patent: 4556903 (1985-12-01), Blitchington et al.
patent: 4586786 (1986-05-01), Suzuki et al.
patent: 4630276 (1986-12-01), Moran
patent: 4643569 (1987-02-01), Sullivan et al.
patent: 4720191 (1988-01-01), Siegel et al.
patent: 4740708 (1988-04-01), Batchelder
patent: 4861164 (1989-08-01), West
patent: 4893932 (1990-01-01), Kollenberg
patent: 5076692 (1991-12-01), Neukermans et al.
patent: 5127726 (1992-07-01), Moran

Affiliated with

Also associated with

Rating

Particle detection system with coincident detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Particle detection system with coincident detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particle detection system with coincident detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-400589