Projection optical system

Details Projection optical system Projection optical system

2006-08-08

2006-08-08

Perkey, W. B. (Department: 2851)

Optics: image projectors

Distortion compensation

For projection axis inclined to screen

C353S081000, C353S099000, C359S633000, C359S631000, C359S858000, C348S745000

Reexamination Certificate

active

07086742

ABSTRACT:
A projection optical system is disclosed with which undistorted images can be obtained at any image position within a specification range, and whose projection angle can be changed. The projection optical system includes a plurality of optical elements and a first optical system constituted by at least one of the plurality of optical elements having the ability to form an image with light onto a predetermined surface different from the projection surface. A projection image of the original image can be moved by rotating a first optical element of the plurality of optical elements substantially around a center of an exit pupil position of the first optical system as the rotation center.

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