Optics: image projectors – Composite projected image
Reexamination Certificate
2007-08-28
2007-08-28
Perkey, W. B. (Department: 2851)
Optics: image projectors
Composite projected image
C353S097000, C353S076000, C359S663000, C359S362000, C359S794000
Reexamination Certificate
active
11637692
ABSTRACT:
A projection optical unit for enlarged projection of an image displayed by an image display element includes a first projection optical unit having positive refractive power, and a second projection optical unit having positive refractive power for further enlarging the first enlarged image obtained by the first projection optical unit. The first projection optical unit is in an almost telecentric relationship with respect to the image display element side and the first enlarged image side, and the first enlarged image is formed at the image display element side, rather than at the second projection optical unit.
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Hirata Koji
Ikeda Hidehiro
Yatsu Masahiko
Antonelli, Terry Stout & Kraus, LLP.
Cruz Magda
Perkey W. B.
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