Optics: measuring and testing – Lens or reflective image former testing
Reexamination Certificate
2006-09-12
2009-08-25
Lauchman, L. G (Department: 2877)
Optics: measuring and testing
Lens or reflective image former testing
C356S364000, C356S239200
Reexamination Certificate
active
07580122
ABSTRACT:
A lens inspection device and method are provided. The lens inspection method includes the steps of providing a collimating light beam, polarizing the collimating light beam by a polarizer to produce a polarized light beam, deflecting the polarized light beam by a lens to be measured to produce a deflected light beam, providing a phase retardation plate through which a polarized compensation image is generated, and comparing the polarized compensation image with a lookup table having standard color values of a plurality of standard polarization compensated images recorded therein, so as to determine whether a deformation is presented on the lens.
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patent: 485253 (2002-05-01), None
patent: 200428361 (2004-12-01), None
Hsu Chia-Wei
Huang Kuo-Cheng
Huang Ting-Ming
Wu Wen-Hong
Instrument Technology Research Center
Lauchman L. G
The Webb Law Firm
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