Invention Grant
- Patent Title: Light guide and illumination device having same
- Patent Title (中): 具有相同的导光和照明装置
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Application No.: US12428444Application Date: 2009-04-22
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Publication No.: US07972042B2Publication Date: 2011-07-05
- Inventor: Mei-Chun Lin , Chun-Hsiang Huang , Kuang-Wei Lin , Kuan-Ting Chen , Hsin-Tsung Yeh , Wei-Hsiu Chang
- Applicant: Mei-Chun Lin , Chun-Hsiang Huang , Kuang-Wei Lin , Kuan-Ting Chen , Hsin-Tsung Yeh , Wei-Hsiu Chang
- Applicant Address: TW Tu-Cheng, New Taipei
- Assignee: Hon Hai Precision Industry Co., Ltd.
- Current Assignee: Hon Hai Precision Industry Co., Ltd.
- Current Assignee Address: TW Tu-Cheng, New Taipei
- Agent Zhigang Ma
- Priority: CN200810305293 20081030
- Main IPC: F21V5/04
- IPC: F21V5/04 ; F21V5/00
Abstract:
A light guide is a quarter of cylinder in shape and includes a cylindrical emitting surface, an incident surface adjacent to and facing away from the cylindrical emitting surface, and a connecting surface connecting the cylindrical emitting surface and incident surface. The light guide defines five a number of grooves in the incident surface. Each groove is bounded by two surfaces. The inclined angle of the two surface is designed to satisfy a set of conditions to improve light uniformity of the cylindrical emitting surface.
Public/Granted literature
- US20100110729A1 LIGHT GUIDE AND ILLUMINATION DEVICE HAVING SAME Public/Granted day:2010-05-06
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