Optics: measuring and testing – Refraction testing – Prism engaging specimen
Patent
1974-04-15
1976-01-06
Corbin, John K.
Optics: measuring and testing
Refraction testing
Prism engaging specimen
356152, G01B 902
Patent
active
039307336
ABSTRACT:
Process and apparatus for sensing the angular orientation of a line or slit element, which comprise producing a laterally moving interference fringe zone wherein the fringe period is substantially wider than the element or the positive difference between the width of the element and a integer multiple of the fringe period, by converging two beams of coherent light of equal intensity and different frequency; positioning the portion of the article bearing the element within the fringe zone such that the article lies in a plane defined by the x and y axes in the fringe pattern and the element is in a position, relative to the article, such that its longitudinal axis is substantially parallel to the fringe plane or can, by rotation of the fringe zone relative to the article around the z-axis, be brought into fringe-plane parallel position; rotating the fringe zone and/or the article around the z-axis to produce relative angular rotation between them; and determining the ratio of AC to DC signal components of the radiation scattered by the line or transmitted by the slit as rotation around the z-axis continues. The maximum AC/DC ratio indicates parallel fringe-plane alignment of the element and the degree of angular rotation from a given relative position of the fringe plane and the element to a succeeding position of parallel fringe-plane and element alignment indicates the angular orientation of the element on the article.
REFERENCES:
patent: 3572937 (1971-03-01), Baldwin
Farmer; "Observation of Large Particle with a Laser Interferometer" 13 Applied Optics 610, Mar. 1974.
Atlantic Research Corporation
Clark Conrad J.
Corbin John K.
Ross Martha L.
LandOfFree
Process and apparatus for monitoring angular orientation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and apparatus for monitoring angular orientation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for monitoring angular orientation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2345185