Invention Grant
- Patent Title: Illumination apparatus having light guide plate with curvedly tapered light coupling portion
- Patent Title (中): 具有具有弯曲锥形光耦合部分的导光板的照明装置
-
Application No.: US14318301Application Date: 2014-06-27
-
Publication No.: US09535204B2Publication Date: 2017-01-03
- Inventor: Toru Kunimochi
- Applicant: MINEBEA CO., LTD.
- Applicant Address: JP Kitasaku-Gun
- Assignee: MINEBEA CO., LTD.
- Current Assignee: MINEBEA CO., LTD.
- Current Assignee Address: JP Kitasaku-Gun
- Agency: Oliff PLC
- Priority: JP2014-024436 20140212
- Main IPC: G02B6/10
- IPC: G02B6/10 ; F21V8/00 ; G02B6/28
Abstract:
An illumination apparatus includes a light source, and a light guide plate having an emitting surface and a light incident portion including a curved surface, and decreasing in thickness from the light source side towards the emitting surface. The curved surface has an S-shape as viewed from a side, with a convex portion on the light source side and a concave portion on the emitting surface with an inflection point in between, but closer to the emitting surface than to the source side.
Public/Granted literature
- US20150226908A1 SPREAD ILLUMINATING APPARATUS Public/Granted day:2015-08-13
Information query
