| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem caused by depolarization of linearly polarized light in an optical system such as laser device and flat panel display and, in particular, in manufacturing electronic components. SOLUTION: A device is disposed so as to prevent or reduce the depolarization of linearly polarized light caused during the transmission of light through crystals having a ä111} or ä100} crystal plane and a <111> or <100> crystal axis. The device is characterized in that the surface of the crystals is formed with the ä111} or ä100} crystal plane onto which the linearly polarized light impinges at an angle of 45 to 75°and the crystals are disposed so that the light after entering the crystal propagates as parallel as possible to the <100> or <111> crystal axis and/or that the system for preventing the formation of a temperature gradient in the crystal comprises a tempering unit. COPYRIGHT: (C)2008,JPO&INPIT
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