Optics: measuring and testing – By light interference – Having polarization
Reexamination Certificate
2007-01-25
2008-12-23
Connolly, Patrick J (Department: 2877)
Optics: measuring and testing
By light interference
Having polarization
C356S515000
Reexamination Certificate
active
07468798
ABSTRACT:
A method for irradiating onto a target optical system plural linearly polarized rays having different polarization directions, and for measuring a polarization characteristic of the target optical system including a birefringence amount R and a fast axis Φ includes the steps of irradiating linearly polarized ray having a polarization direction θ onto the target optical system and obtaining a centroid amount P of the ray that has transmitted through the target optical system, and obtaining the birefringence amount R and the fast axis Φ from P=−R·cos(2θ−Φ) or P=R·cos(2θ−Φ).
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Canon Kabushiki Kaisha
Connolly Patrick J
Morgan & Finnegan , LLP
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