Title:
光偏向領域を有する光導波体
Document Type and Number:
Japanese Patent JP2008547175
Kind Code:
A
Abstract:
The invention relates to an optical light guide comprising: a substantially rigid light transmissive body having an input window, a distal end, a front side (180), and a rear side (200); said light transmissive body having a substantially smooth exterior surface on said front side and a substantially clear and solid interior, said input window transmitting light into said light transmissive body and extending substantially transverse to a longitudinal axis of a light emitting diode (LED) light source (10);
said light transmissive body substantially being a body of rotation about said longitudinal axis, and having a substantially constant thickness measured between said front side and said rear side, said light transmissive body extending way from said input window through an arc of from 60 to 120 degrees to an extension forming an output region extending towards said distal end; said rear side at least in said output region being formed with a plurality of reflective steps (240) directing intercepted light towards the front side.
Inventors:
Thomas Tesnow
Application Number:
JP2008518434A
Publication Date:
December 25, 2008
Filing Date:
June 23, 2006
Export Citation:
Assignee:
OSRAM SYLVANIA Inc.
International Classes:
F21S8/10; F21K99/00; F21S2/00; G02B6/00; G02B6/42; F21Y101/02
Domestic Patent References:
| JP2005158362A | 2005-06-16 | |||
| JP2004047351A | 2004-02-12 | |||
| JP2003141909A | 2003-05-16 | |||
| JP2004146169A | 2004-05-20 |
Foreign References:
| US6356394B1 | 2002-03-12 | |||
| US6097549A | 2000-08-01 | |||
| WO2004090415A2 | 2004-10-21 | |||
| FR2853392A1 | 2004-10-08 |
Attorney, Agent or Firm:
Takuya Kuno
Toshiomi Yamazaki
Kimihiro Hoshi
Toshiomi Yamazaki
Kimihiro Hoshi