Optics: measuring and testing – By polarized light examination – Of surface reflection
Patent
1998-08-31
1999-10-19
Pham, Hoa Q.
Optics: measuring and testing
By polarized light examination
Of surface reflection
356364, G01J 400
Patent
active
059698187
ABSTRACT:
Disclosed is an electromagnetic beam directing system and method which enables changing the direction of propagation of a beam of electromagnetic radiation without significantly changing the phase angle between orthogonal components therein. Two pairs of mirrors are oriented to form two orthogonally related planes such that phase shift entered to an electromagnetic beam by interaction with the first pair of mirrors is canceled by interaction with the second pair.
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He Ping
Johs Blaine D.
J. A. Woollam Co. Inc.
Pham Hoa Q.
Welch James D.
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