Polarization state measurement apparatus and polarization state measurement method
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United States of America Patent
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Mar 10, 2015
Grant Date -
Feb 7, 2013
app pub date -
Aug 1, 2012
filing date -
Aug 5, 2011
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Abstract
An optical apparatus has a light detecting section which detects light and emits transmitted light where linearly polarized light, which is converted by a polarizing section, is transmitted through a subject. In addition, the optical apparatus has an orthogonal separating section which orthogonally separates the emitted light from the light detecting section and a light reception section which receives light which is orthogonally separated by the orthogonal separating section. A calculation apparatus outputs a rotation control signal to a rotation apparatus and rotation controls the light detecting section so that the rotation plane is orthogonal with regard to an optical path of the transmitted light. Then, the calculation apparatus measures the polarization state of the transmitted light, which is transmitted through the subject S using the intensity with which the light, is received by the light receiving section.
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