Optical system and projection display device

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United States of America Patent

PATENT NO 7686455
SERIAL NO

12289942

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Light in primary colors RGB modulated in a first modulation optical system is transmitted through a relay lens (36) and further divided into a P-polarized light and an S-polarized light by a PS separation wire grid (37). The S-polarized light is transmitted through a wavelength spectral filter (39) to select red/green/blue light components R1, G1, B1 of 615, 515, 450 nm in wavelength, which are then modulated by a Y1 device (44). The P-polarized light is transmitted through a wavelength spectral filter (46) to select red/green/blue light components R2, G2, B2 of 650, 550, 475 nm in wavelength, which are then modulated by a Y2 device (51). The 3 -primary color lights modulated by the Y1/Y2 devices (44), (51) are combined with each other at a PS composite wire grid (55) to project a synthetic light on a screen.

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Patent Owner(s)

Patent OwnerAddress
JVC KENWOOD CORPORATIONKANAGAWA-KU YOKOHAMA-SHI KANAGAWA 221-0022

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furuya, Masato Yokohama, JP 66 752
Kanazawa, Masaru Tokyo, JP 34 341
Kusakabe, Yuichi Tokyo, JP 5 70
Yoshimura, Makoto Yokohama, JP 32 282

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