Optics: image projectors – Distortion compensation – For projection axis inclined to screen
Reexamination Certificate
2007-02-27
2007-02-27
Mahoney, Christopher (Department: 2851)
Optics: image projectors
Distortion compensation
For projection axis inclined to screen
C353S069000, C348S756000, C359S216100, C359S217200
Reexamination Certificate
active
10235620
ABSTRACT:
A projection optical system includes an optical modulation unit which outputs modulated light for displaying an image, an optical scanning unit on which the modulated light output from the optical modulation unit is incident, the optical scanning unit scanning the light from the optical modulation unit to obtain a two-dimensional image, and a plurality of curved reflecting surfaces on which the light scanned by the optical scanning means is sequentially incident, the plurality of curved reflecting surfaces sequentially reflecting the light scanned by the optical scanning means and projecting the light on a projected surface, wherein when an optical path of a ray connecting a center of a pupil of the projection optical system and a center of a projected image is set as a reference axis, the reference axis is inclined with respect to a normal to the projected surface.
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Canon Kabushiki Kaisha
Mahoney Christopher
Morgan & Finnegan , LLP
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