Optics: image projectors – Reflector – Plural
Reexamination Certificate
2006-01-31
2006-01-31
Koval, Melissa Jan (Department: 2851)
Optics: image projectors
Reflector
Plural
C353S037000, C353S078000, C359S631000, C359S633000, C359S858000, C359S859000
Reexamination Certificate
active
06991338
ABSTRACT:
A projection optical system having a plurality of reflecting surfaces is disclosed in which a sufficiently large angle is provided between an incident side reference axis and an emerging side reference axis while tilt angles of the respective reflecting surfaces can remain small. The projection optical system projects luminous flux from an image forming element which forms an original image onto a projection surface. The incident side reference axis and the emerging side reference axis of the projection optical system are oblique to each other. The projection optical system has a plurality of reflecting surfaces each having a curvature. The reflecting surfaces are arranged such that the reference axis has at least one intersection in the projection optical system.
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European Search Report, Dated Nov. 26, 2003.
Chatani Sawako
Ishii Takayuki
Kurematsu Katsumi
Kurioka Yoshiaki
Sunaga Toshihiro
Koval Melissa Jan
Morgan & Finnegan , LLP
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