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(12) United States Patent

Gasquet

(io) Patent No.: (45) Date of Patent:

US 7,452,114 B2 Nov. 18, 2008

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6,193,383 Bl* 2/2001 Onikiri et al 362/26

6,565,244 Bl 5/2003 Murphy etal.

6,724,543 Bl* 4/2004 Chinniah et al 359/718

6,755,556 B2 * 6/2004 Gasquet etal 362/329

6,953,271 B2* 10/2005 Aynie et al 362/511

2003/0026106 Al 2/2003 Knaacketal.

FOREIGN PATENT DOCUMENTS

DE 198 57 561 Al 6/2000

EP 0 515 921 A 12/1992

WO 82/00272 2/1982

WO 99/09349 2/1999

OTHER PUBLICATIONS

Motorola Optoelectronics Device Data, Semi Conductor Technical Data, 1989, pp. (4-11)- (4-12).*

French Patent Office; "French Search Report"; corresponding to FR Patent Application No. FR03 15 115; dated May 24,2004; (3 pages).

* cited by examiner

Primary Examiner—John A. Ward
Assistant Examiner—Robert May

(74) Attorney, Agent, or Firm—Morgan & Finnegan, LLP

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A signalling or lighting apparatus comprising at least one light source defining a main emission direction, together with at least one elongate light guide, one end of which is lit by the light source, the light guide being adapted to diffuse the light transversely along its length. At least in the vicinity of the light source, the guide has a longitudinal axis which is disposed transversely to the main emission direction, in such a way that some of the light flux from the light source provides a primary signalling or lighting function with a relatively high luminous intensity, and a second signalling or linear lighting function, of lesser light intensity, is provided along a length of the light guide.

14 Claims, 4 Drawing Sheets

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