Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-07-11
2006-07-11
Allen, Stephone B. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C356S369000
Reexamination Certificate
active
07075055
ABSTRACT:
Provided is a measuring device which has a focusing unit for focusing light flux from a light source and irradiating it to a magnetic substance to be measured, a half-turn asymmetric element acting only on the light flux reflected by the magnetic substance to be measured and acting in such a manner that its action on polarization distribution in a cross section of the light flux has asymmetry nature about half-turn around an optical axis in order to obtain sensitivity to in-plane magnetization vector components of the magnetic substance to be measured, and a polarization split detector for detecting a light amount of a polarization component in one direction or separated each component of polarization components orthogonal to each other of the light which receives action of the half-turn asymmetric element so that the in-plane magnetization vector component in one direction can be measured separately from other components.
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Allen Stephone B.
Armstrong, Kratz, Quintos Hanson & Brooks, LLP.
Ellis Suezu
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