Projection screen

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United States of America Patent

PATENT NO 9891515
SERIAL NO

15431780

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A projection screen including a substrate, Fresnel structures and a protective layer is provided. The Fresnel structures are located on a surface of the substrate facing an image-source side and arranged along a first direction. Each Fresnel structure extends along a second direction. The protective layer has a first surface facing the image-source side. The first surface has optical microstructures. The optical microstructures are orthographically projected on a reference plane to form orthographic projection patterns. Each of the orthographic projection patterns has a first axis and a second axis substantially perpendicular to each other. The first axis passes through two end points having a maximum distance in the first direction. The second axis passes through two end points having a maximum distance in the second direction. Each of the orthographic projection patterns is symmetry to at least one of the first axis and the second axis.

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Patent Owner(s)

Patent OwnerAddress
CORETRONIC CORPORATIONNO 11 LI-HSIN RD HSINCHU SCIENCE PARK HSIN-CHU 300

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chien, Hung-Ta Hsin-Chu, TW 23 42
Hsu, Fu-Chiang Hsin-Chu, TW 9 38
Su, Fang-Hsuan Hsin-Chu, TW 16 46

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