OPTICAL MEMBER, LIGHT SOURCE DEVICE, AND IRRADIATION SYSTEM

    公开(公告)号:US20180058660A1

    公开(公告)日:2018-03-01

    申请号:US15691555

    申请日:2017-08-30

    IPC分类号: F21V5/00 G02B3/00

    摘要: An optical member includes one or more lens surfaces, each lens surface comprising a curved surface having: a curvature in a first direction, and a curvature in a second direction that is perpendicular to the first direction in an imaginary plane perpendicular to an optical axis of incident light. Each of the one or more lens surfaces has a substantially rectangular planar shape when viewed in an optical axis direction, the substantially rectangular planar shape being defined by two sides substantially parallel to the first direction and two sides substantially parallel to the second direction. The curvature in the second direction continuously increases from a first end of each of the one or more lens surfaces in the first direction toward a second end of each of the one or more lens surfaces in the first direction.

    TRANSPARENT SCREEN AND METHOD FOR MANUFACTURING TRANSPARENT SCREEN

    公开(公告)号:US20170336704A1

    公开(公告)日:2017-11-23

    申请号:US15531711

    申请日:2015-12-24

    申请人: ARC CO., LTD.

    发明人: Kosuke MIZOSHITA

    IPC分类号: G03B21/62 C23C16/44 B41F15/08

    摘要: An object is to provide a transparent screen which can clearly project and display an image without degradation of transmission visibility and a method for manufacturing the transparent screen.A thin film 4 in which a large number of regular hexagonal hole portions 3 that are identical to each other are opened, in a transparent sheet 2, in a web-like manner is applied to a transparent screen 1. The regular hexagonal hole portions 3 are segmented with web-like line portions 6 formed by connecting the sides 5 of the adjacent regular hexagonal hole portions 3 so as to have an even width, image light projected from a projector 7 is reflected off the web-like line portions 6 and is shown on the transparent screen 1 and a background on the back surface side of the transparent screen 1 can be visually recognized through the regular hexagonal hole portions 3.