Color splitting apparatus and method with unequal glass path...

Details Color splitting apparatus and method with unequal glass path... Color splitting apparatus and method with unequal glass path...

2005-02-15

2005-02-15

Liang, Hung Xuan (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C359S618000, C359S629000, C359S638000, C359S833000, C353S033000, C353S081000

Reexamination Certificate

active

06856464

ABSTRACT:
A three element prism system and method for splitting/combining three different colors of light arranged such that the size of a selected one of the color prism, such as for example, the red prism and, consequently the clear aperture, are increased without a corresponding increase in the size of the other prisms (e.g., the blue and green prisms). This is accomplished by adjusting the air gap A2of the selected light path (e.g., red) so that the effective total selected light path T, which includes the selected light air gap A2and the selected light glass path G2is the same as the total path length T of both the other light paths (e.g., green and blue) comprised of air gap A1plus glass path G1.

REFERENCES:
patent: 6456447 (2002-09-01), Sato

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