Optics: measuring and testing – By polarized light examination – With polariscopes
Patent
1994-03-30
1996-05-21
Rosenberger, Richard A.
Optics: measuring and testing
By polarized light examination
With polariscopes
356369, G01N 2121
Patent
active
055194931
ABSTRACT:
A polarimeter with a polarization state generator and a polarization state analyzer mounted together on a single rotary mount. This novel structure allows built-in alignment and synchronization of the polarization state analyzer and the polarization state generator. Because of this built-in alignment and synchronization, polarization properties of samples can be measured quickly, accurately, inexpensively, and reliably. The instrument can measure polarization properties of remote samples, without placing the sample inside the instrument. The surrounding lenses and mirrors are designed in such a way that light leaving the instrument will pass through the polarization state generator and light returning into the instrument will pass through the polarization state analyzer and onto a photodetector. Samples can be measured directly in reflection or in small-angle backscatter; or they can be measured in double-pass transmission with the addition of a mirror or retroreflector.
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