Noncontact optical gauging system

Details Noncontact optical gauging system Noncontact optical gauging system

1979-12-11

1981-11-10

Rosenberger, R. A.

Optics: measuring and testing

By polarized light examination

With light attenuation

356 4, G01B 1124

Patent

active

042994918

ABSTRACT:
A laser beam is focused to a spot on the surface of an object whose contour is to be measured. The spot is projected from the surface onto a detector by a reciprocating mirror which scans the spot across the detector. The detector produces two output signals consisting of sequential pulses at the frequency scan. The relative duration of these pulses or duty cycle reflects the change in contour dimension with respect to the scan centerline or mid point that corresponds to the base or zero dimension of the contour surface. The duty cycle is utilized to compute the change in contour dimension and to move the optics in such a way as to allow the spot to be continually scanned across the detector. The movement of the optics is made whenever there is a certain contour dimension change and by correlating the movement in the position of the optics and the instantaneous computed contour change reflected in the scan, the actual contour dimension is obtained.

REFERENCES:
patent: 3589815 (1971-06-01), Hosterman
patent: 3856411 (1974-12-01), Zanoni
patent: 3909131 (1975-09-01), Waters
patent: 3986774 (1976-10-01), Lowrey et al.
patent: 4183672 (1980-01-01), Raber et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2360293