Light projection apparatus and light-mixing module thereof

Details Light projection apparatus and light-mixing module thereof Light projection apparatus and light-mixing module thereof

2008-12-02

2011-10-25

Mack, Ricky (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C359S618000, C359S638000, C353S033000

Reexamination Certificate

active

08045273

ABSTRACT:
A projection apparatus includes a first, a second and a third light sources, a first reflective element, a first and a second dichroic mirrors, a light-homogenizing element, a light valve and a projection lens. The first reflective element is configured to reflect the first light beam, and the first dichroic mirror is configured to reflect the second light beam and to transmit the first light beam transmitted from the first reflective element. The second dichroic mirror is configured to reflect the first and the second light beams transmitted from the first dichroic mirror and to transmit the third light beam. The light-homogenizing element is used for homogenizing the combined light beam, and the light valve is used for modulating the combined light beam to form an image beam. The projection lens is used for receiving and then projecting the image beam.

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Hecht, Eugene. Optics. Reading, MA: Addison-Wesley, 1998. pp. 109-123. Print.

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