Projector including a relay optical system

Details Projector including a relay optical system Projector including a relay optical system

2005-02-08

2005-02-08

Nguyen, Judy (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S034000, C353S037000, C353S069000, C353S084000, C353S099000, C353S102000, C349S005000, C349S006000, C349S007000, C349S008000, C348S743000, C359S889000

Reexamination Certificate

active

06851811

ABSTRACT:
A relay optical system, which focuses light from a light outgoing plane of an integrator rod into an image on a predetermined illumination area, has a first optical element for correcting at least a distortion aberration, and a second optical element for correcting at least a chromatic aberration. The first optical element includes at least one focusing lens having a non-spherical convex plane, and the second optical element includes at least one diverging lens having a spherical concave lens. The diverging lens is composed of a relatively high dispersive optical glass material having an Abbe's number of not greater than 40. The focusing lens is composed of either an acrylic resin material or an olefin resin material. This arrangement focuses light into an image as an illumination area with a high accuracy and thereby enhances the quality of a resulting displayed image in a projector based on SCR technique.

REFERENCES:
patent: 6474818 (2002-11-01), Engle
patent: 6547396 (2003-04-01), Svardal et al.
patent: 6698891 (2004-03-01), Kato
patent: 6702446 (2004-03-01), De Vaan et al.
patent: 20040070738 (2004-04-01), Sekiguchi et al.

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