US Patent No: 4,660,970

Number of patents in Portfolio can not be more than 2000

Method and apparatus for the contact-less measuring of objects

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Abstract

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The invention concerns a method for the optical sensing of workpieces in accordance with the principle of triangulation in which a light spot is projected at an angle onto the object to be measured (13) and the distance from the object (13) is determined from the displacement of the image of the light spot as measured with a position-sensitive detector (10). In addition, the shape or the area of the light spot is measured by means of an image analysis instrument (3) and the inclination of the surface of the object to the direction of observation is determined therefrom in order to increase the accuracy of the distance determination.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CARL-ZEISS-STIFTUNGOBERKOCHEN578

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ferrano, Gert Aalen, DE 3 138

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Control Data Corporation (1)
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H. A. Schlatter AG (1)
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MILES INC. (1)
4,355,904 Optical inspection device for measuring depthwise variations from a focal plane 41 1980
 
Westinghouse Electric Corp. (1)
4,427,880 Non-contact visual proximity sensing apparatus 36 1981

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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