Telecentric reflection head for optical monitor
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United States of America Patent
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-
Dec 16, 1997
Grant Date -
N/A
app pub date -
Apr 4, 1996
filing date -
Apr 4, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The use of a telecentric system allows for minimizing the changes in the measured radiometric quantity as a result of defocus or tilt of the object under measurement or of the detector. In a preferred embodiment, a telecentric illuminating system is provided, which illuminates an object from a source. A telecentric receiving system receives reflections from the object and relays them to a detector. In another preferred embodiment, a telecentric system is also described that is appropriate for radiance or radiant intensity measurements.
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