Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1983-02-15
1986-12-23
Rosenberger, R. A.
Optics: measuring and testing
By polarized light examination
With light attenuation
356375, G01B 1114
Patent
active
046309276
ABSTRACT:
An invention is disclosed for optically determining the position of an object in space, using a single lens for triangulation, wherein an indexing light beam is projected to a lens on one side nonparallel to the optical axis of the lens. The lens focuses the indexing light beam at a known point on the other side of the lens at or near which reflection occurs by the object. Reflected light is captured by the lens and focused toward a photodetector which generates a signal indicating whether reflection occurred at the known point, thus indicating whether the object is present at the known point. If laser light is used, provision is made for, in effect, positioning the laser light source on the optical axis to reduce the effects of laser pointing instabilities. The invention can be used to measure the radii of rotating gas turbine engine rotors.
REFERENCES:
patent: 3667846 (1972-06-01), Nater et al.
patent: 4074104 (1978-02-01), Fulkerson
patent: 4204772 (1980-05-01), Balasubramanian
patent: 4326804 (1982-04-01), Mossey
IBM Technical Disclosure Bulletin, vol. 15, No. 2, Jul. 1972, pp. 504, 505, "Optical Surface Microtopography Measurement and/or Automatic Focussing," A Frosch/M Kallmeyer/H Korth/F Schedewie.
Cooper Crystal D.
General Electric Company
Lawrence Derek P.
Rosenberger R. A.
Welte Gregory A.
LandOfFree
Optical projector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical projector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical projector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-169332