Linear light source having indented reflecting plane

Details Linear light source having indented reflecting plane Linear light source having indented reflecting plane

2005-11-22

2005-11-22

Tso, Laura K. (Department: 2875)

Illumination

Revolving

C362S555000

Reexamination Certificate

active

06966664

ABSTRACT:
A linear light source having an indented reflecting plane comprises a light guide bar and a light source component. The light guide bar is a polygonal cylinder having an arc-shaped plane. Any two opposed surfaces of the cylinder are an indented reflecting plane and an arc-shaped emission place, respectively. The other surfaces are composed of a plurality of reflecting layers. Through controlling the light-emission slope and height of the indented reflecting plane, the light will be more uniform. The brightness can also be enhanced through the light collecting effect of the arc-shaped emission plane. Moreover, the light source component can let the light emission angle of each LED be closer to accomplish a shorter useless region through the arrangement of the LEDs.

REFERENCES:
patent: 5810463 (1998-09-01), Kawahara et al.
patent: 6204938 (2001-03-01), Horiuchi et al.
patent: 6206534 (2001-03-01), Jenkins et al.
patent: 6461007 (2002-10-01), Akaoka
patent: 6540368 (2003-04-01), Akaoka
patent: 6786626 (2004-09-01), Wu et al.

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