Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1987-11-13
1989-08-15
Rosenberger, Richard A.
Optics: measuring and testing
By polarized light examination
With light attenuation
G01B 1100
Patent
active
048569020
ABSTRACT:
An improved method and apparatus for detecting the edges of a sample part operates on the Gaussian distribution of light intensity across a laser beam and uses analog signal and simple logical circuits to produce highly accurate, highly repeatable and rapid edge position indications. A multi-segment detector is configured with reference to the dimensions of the laser beam to provide independent outputs representative of relative position of the reflected or transmitted portion of the laser beam upon the detector as the edge of the sample part moves across the beam.
REFERENCES:
patent: 3435232 (1969-03-01), Sorenson
patent: 3856412 (1974-12-01), Zanoni
patent: 3879131 (1975-04-01), Cuthbert et al.
patent: 4201476 (1980-05-01), Musto
patent: 4272190 (1981-06-01), Shapiro
patent: 4384195 (1983-05-01), Nosler
patent: 4422763 (1983-12-01), Kleinknecht
patent: 4427296 (1984-01-01), Demarest et al.
patent: 4547895 (1985-10-01), Mita et al.
patent: 4557602 (1986-11-01), Maruo et al.
patent: 4583854 (1986-04-01), Lozar
patent: 4597668 (1986-07-01), Ono
patent: 4624563 (1986-11-01), Johnson
patent: 4701053 (1987-10-01), Ikenaga
patent: 4713533 (1987-12-01), Bremer et al.
patent: 4730927 (1988-03-01), Ototake et al.
Lasersense, Inc.
Rosenberger Richard A.
Smith A. C.
LandOfFree
Imaging and inspection apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Imaging and inspection apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging and inspection apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-118101