Optics: measuring and testing – By polarized light examination
Reexamination Certificate
2008-09-04
2009-12-29
Nguyen, Sang (Department: 2886)
Optics: measuring and testing
By polarized light examination
C356S369000, C349S117000, C349S136000, C428S001100
Reexamination Certificate
active
07639360
ABSTRACT:
An examining device adapted to examining a transmittance of a display panel is provided. The examining device includes a light source, a first polarizer, a photodetector, a second polarizer, at least one first reflector and at least one second reflector. The light source and the photodetector are respectively disposed on both sides of the display panel. The second polarizer is disposed between the display panel and the photodetector. The first reflector is disposed between the display panel and the second polarizer. The second reflector is disposed between the display panel and the first polarizer. Light emitting from the light source successively passes via the first polarizer, the display panel, the first reflector, the display panel, the second reflector, the display panel, the second polarizer and then emits into the photodetector.
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Chang Chao-Song
Hu Cheng-Chung
Huang Chiu-Jung
Li Huan-Ting
Wu Chun-Wei
Chunghwa Picture Tubes Ltd.
Jianq Chyun IP Office
Nguyen Sang
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