Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2005-02-22
2005-02-22
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S559190
Reexamination Certificate
active
06858836
ABSTRACT:
The invention relates to a laser scanner measurement system, comprising a transmission unit consisting of a laser, beam deflection unit and transmitting optical system, and a receiving part with a photodetector which is arranged in the focal plane of the optical system destined for the receiving beam path. The invention is characterized in that the scanner unit and receiving unit are arranged on the same side in relation to the object and the surface normal of the receiving optical system is parallel to the direction of radiation of the scanner unit, i.e. that the scanner and receiver beam path in the outer area at all times have the same optical axis or that the axes are displaced parallel to each other and perpendicular to the direction ofmovement of the laser beam.
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K.-S. Chang et al., “Correction Algorithms in a Laser Scanning Dimension Measurement System”, in8049a IEE Proceedings-A, 139(1992) March, No. 2, ParetA,Stevenage, Herts, Great Britain.
Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung
Luu Thanh X.
Sohn Seung C.
Venable LLP
Voorhees Catherine M.
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