- Patent Title: Reflective screen, reflective screen unit, and video display device
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Application No.: US17906266Application Date: 2021-03-18
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Publication No.: US12219288B2Publication Date: 2025-02-04
- Inventor: Sunao Yamaguchi , Masashi Hiromitsu
- Applicant: Dai Nippon Printing Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: BURR PATENT LAW, PLLC
- Priority: JP2020-047506 20200318
- International Application: PCT/JP2021/011136 WO 20210318
- International Announcement: WO2021/187570 WO 20210923
- Main IPC: G03B21/602
- IPC: G03B21/602 ; G02B3/08 ; H04N5/74

Abstract:
A reflective screen including a Fresnel lens-shaped lens layer having unit lenses and a reflective layer formed on the unit lenses for reflecting light. The unit lens protrudes from a video source side to a back surface side in the thickness direction of the lens layer. In the lens layer, a flat part having a flat surface f on the back surface side is formed at at least one end edge. In the thickness direction of the lens layer, a maximum lens height h1max of a lens height h1 that is the distance from a position closest to the video source side to a position closest to the back surface side, and a flat surface height h2 that is the distance from the position closest to the video source side of the unit lens to the flat surface f of the flat part 114 satisfy h2≥h1max.
Public/Granted literature
- US20230130094A1 REFLECTIVE SCREEN, REFLECTIVE SCREEN UNIT, AND VIDEO DISPLAY DEVICE Public/Granted day:2023-04-27
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