Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2007-04-03
2007-04-03
Koval, Melissa Jan (Department: 2851)
Optics: image projectors
Polarizer or interference filter
C353S031000
Reexamination Certificate
active
10970385
ABSTRACT:
An image displaying apparatus employs quartz wave plates and displays images of high contrast. The quartz wave plates in the image displaying apparatus are each arranged between a polarizing beam splitter of a color separating-combining unit and a reflective spatial light modulator. Each of the quartz wave plates is made of two elementary quartz plates. An angle formed between slow axes of the two elemental quartz plates is within a range of 5 minutes to 15 minutes from a right angle.
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Ishizaka Yasuo
Yonekura Atsuhiro
Kang Gregory B.
Koval Melissa Jan
Nath Law Group PLLC
Protigal Stanley N.
Victor Company of Japan , Limited
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