Triple-lens type projection display with uniform optical path lengths for different color components
First Claim
1. A triple-lens type projection display, comprising:
- a source for generating a white primary beam output;
a first beam splitter for splitting the white primary beam output into a first color component and a secondary beam output;
a second beam splitter for splitting the secondary beam output into a second color component and a third color component;
first, second and third light modulators for modulating the first, second and third color components, respectively;
a first projection lens for receiving the first color component from said first light modulator;
a second projection lens for receiving the second color component from said second light modulator; and
a third projection lens for receiving the third color component from said third light modulator;
wherein each of the first, second and third color components has a respective optical path length that is measured from said first beam splitter to the respective one of said first, second and third light modulators; and
wherein the optical path lengths of the first, second and third color components are equal.
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Accused Products
Abstract
A triple-lens type projection display includes a source for generating a white primary beam output, a first beam splitter for splitting the white primary beam output into a first color component and a secondary beam output, a second beam splitter for splitting the secondary beam output into a second color component and a third color component, first, second and third light modulators for modulating the first, second and third color components, respectively, a first projection lens for receiving the first color component from the first light modulator, a second projection lens for receiving the second color component from the second light modulator, and a third projection lens for receiving the third color component from the third light modulator. Each of the first, second and third color components has a respective optical path length that is measured from the first beam splitter to a respective one of the first, second and third light modulators. The optical path lengths of the first, second and third color components are equal.
8 Citations
16 Claims
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1. A triple-lens type projection display, comprising:
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a source for generating a white primary beam output;
a first beam splitter for splitting the white primary beam output into a first color component and a secondary beam output;
a second beam splitter for splitting the secondary beam output into a second color component and a third color component;
first, second and third light modulators for modulating the first, second and third color components, respectively;
a first projection lens for receiving the first color component from said first light modulator;
a second projection lens for receiving the second color component from said second light modulator; and
a third projection lens for receiving the third color component from said third light modulator;
wherein each of the first, second and third color components has a respective optical path length that is measured from said first beam splitter to the respective one of said first, second and third light modulators; and
wherein the optical path lengths of the first, second and third color components are equal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification