| 摘要 |
PROBLEM TO BE SOLVED: To allow easy operation, to simplify a structure, and to provide test work at low cost. SOLUTION: This test device has at least one light source 41, and at least one polarization device 43. In the test device, a beam 40 is emitted from the light source 41, and the beam 40 is polarized by polarization action of the polarization device 43. COPYRIGHT: (C)2006,JPO&NCIPI
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