High-speed polarizing device and high-speed birefringence...

Details High-speed polarizing device and high-speed birefringence... High-speed polarizing device and high-speed birefringence...

2007-07-03

2010-06-22

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

By polarized light examination

Of surface reflection

C356S364000

Reexamination Certificate

active

07742169

ABSTRACT:
A polarizing device including a plurality of polarized light radiating units for radiating polarized light rays each of which is polarized in a particular direction, a rotary reflector for receiving light rays emitted by the plurality of polarized light radiating units while being rotated and for outputting reflected light in a certain direction, and an analyzer disposed midway an optical path of the reflected light from the rotary reflector to set a polarization direction of the reflected light in a certain direction, wherein each of the polarized light radiating units includes a light source, a polarizer for setting a polarization direction of light from the light source, and a first compensator for compensating for a change in a state of polarization attributable to the rotary reflector, and the plurality of polarized light radiating units are disposed in a radial arrangement that is centered at the rotary reflector.

REFERENCES:
patent: 7170567 (2007-01-01), Ouchi et al.
patent: 2004-294370 (2004-10-01), None

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