Multi-zoned dichroic mirror for liquid crystal projection system

Details Multi-zoned dichroic mirror for liquid crystal projection system Multi-zoned dichroic mirror for liquid crystal projection system

1996-03-29

1998-01-13

Epps, Georgia Y.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

G02B 2714

Patent

active

057085307

ABSTRACT:
A multi-zoned dichroic mirror for use in a liquid crystal projection system that is capable producing projected images having improved color uniformity including a dichroic mirror which is divided into at least two regions of a first and a second region, a first region on the dichroic mirror that is coated with a first dichroic coating which compensates for color variations caused by variations in the incident angles of the incident light beams in a positive manner, and a second region on the dichroic mirror coated with second dichroic coating which compensates for color variation caused by variations in the incident angles of the incident light beams in a negative manner.

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