Spread illuminating apparatus having light controlling means

Details Spread illuminating apparatus having light controlling means Spread illuminating apparatus having light controlling means

2006-06-27

2006-06-27

O'Shea, Sandra (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S600000, C362S610000, C362S622000, C362S621000

Reexamination Certificate

active

07066634

ABSTRACT:
A spread illuminating apparatus comprises a plurality of LED's as light sources, a light conductive plate, and a light controlling means disposed between the LED's and the light conductive plate. The light controlling means includes a plurality of transparent resin films which have respective different refractive indexes, which are laminated over one another in a direction parallel to a major surface as a light exit surface of the light conductive plate thereby forming a refractive index profile in the direction parallel to the light exit surface of the light conductive plate, and two adjacent ones of which are put together by adhesive that can transmit light emitted from the LED.

REFERENCES:
patent: 5838869 (1998-11-01), Rasch et al.
patent: 6540368 (2003-04-01), Akaoka
patent: 2004/0165371 (2004-08-01), Kitamura et al.
patent: 2004/0190279 (2004-09-01), Kitamura
patent: A 10-199316 (1998-07-01), None
patent: A 10-293202 (1998-11-01), None
patent: A 2002-260427 (2002-09-01), None

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