Moire contouring camera
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United States of America Patent
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-
Dec 3, 1991
Grant Date -
N/A
app pub date -
Nov 2, 1990
filing date -
Nov 2, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A moire contouring imaging device for small field moire imaging in which both the illumination and viewing optical beam paths pass through a common primary lens and optical grating. The use of such common optical elements improves optical stability and accuracy since magnification and focal length and other mismatching between discrete optical elements in the viewing and illumination paths are avoided. The device is assembled in a rugged elongated housing. Additional features are provided to avoid the effects of unwanted stray light reflected off rear surfaces of optical elements within the system.
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Cited Art Landscape
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