Optical light guide member, illumination unit, and instrument

Details Optical light guide member, illumination unit, and instrument Optical light guide member, illumination unit, and instrument

2005-02-01

2005-02-01

Lee, Y My Quach (Department: 2875)

Illumination

Illuminated scale or dial

C362S026000, C362S027000

Reexamination Certificate

active

06848799

ABSTRACT:
An optical light guide member according to the present invention includes a tubular portion in which an annular light incident end surface for entering light is formed on a one end thereof, a funnel-shaped expanded section having a one end side thereof continuously extending to the other end of the tubular portion, a flat section which has on a front side thereof a light exit surface extending along a flat plane intersecting an axis of the tubular portion, and which extends continuously to the one end side of the funnel-shaped expanded section, and a plurality of light deflection elements formed at least on the back side of the flat section each for altering the traveling direction of the light. An incident light on the tubular portion from the light incident end surface is emitted with a uniform intensity distribution from the light exit end surface.

REFERENCES:
patent: 5971558 (1999-10-01), Peel
patent: 6065846 (2000-05-01), Kato et al.
patent: 6183099 (2001-02-01), Garay et al.
patent: 6356394 (2002-03-01), Glienicke
patent: 0 732 679 (1996-09-01), None
patent: Sho. 54-147248 (1979-11-01), None
patent: 62-76617 (1987-05-01), None
patent: 06300765 (1994-10-01), None
patent: 08099563 (1996-04-01), None
patent: 09287981 (1997-11-01), None
patent: 11115552 (1999-04-01), None
patent: 2000213964 (2000-08-01), None
patent: 2001067029 (2001-03-01), None
patent: 2001304920 (2001-10-01), None
patent: WO 9826212 (1998-06-01), None

Affiliated with

Also associated with

Rating

Optical light guide member, illumination unit, and instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical light guide member, illumination unit, and instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical light guide member, illumination unit, and instrument will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3450847