Optical measuring apparatus and method
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United States of America Patent
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Nov 24, 1987
Grant Date -
N/A
app pub date -
Jun 28, 1985
filing date -
Jun 28, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical triangulation probe is provided for measuring the distance and inclination of a surface. A light source is utilized for projecting a beam toward the surface to form a light spot on the surface. The image of the light spot is reflected and formed on a light detector means which produces a signal representation of the image intensity distribution of the light spot image and the location of the image on the detector means. Estimating means utilizes the signal representation of the light spot image and a signal representation of a theoretical image to estimate the location of the light spot image on the detector means. The distance of the surface and its inclination as established upon making the estimation due to the known triangulation relationship between the location of the light spot image on the detector means and the location of the light spot on the surface.
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