Cross dichroic prism, image display module, and image display device

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United States of America Patent

PATENT NO 11733438
SERIAL NO

17532531

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Abstract

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The cross dichroic prism according to the present disclosure includes four prisms and two dichroic mirrors. Each of the four prisms has a triangle-prism shape. The four prisms are arranged to form a quadrangular prism as a whole in a manner such that the ridge line portions are located close to each other, a first plane of one prism faces a second plane of another prism, and a third plane faces outward. Each of the two dichroic mirrors is constituted of a dielectric multilayer film provided between the first plane of one prism and the second plane of another prism. The outermost layer of a dielectric layer constituting the dielectric multilayer film is provided in contact with each of the first plane of the one prism and the second plane of the other prism.

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Patent Owner(s)

Patent OwnerAddress
SEIKO EPSON CORPORATIONTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukase, Akio Chino, JP 25 87
Yano, Kunihiko Shiojiri, JP 39 478

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