Backlight system

Details Backlight system Backlight system

2006-05-16

2006-05-16

Kim, Ellen E. (Department: 2874)

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

C385S031000

Reexamination Certificate

active

07046907

ABSTRACT:
A backlight system comprising a light-guiding plate (1), a light emitting source (2) disposed to face a light-entrance surface (1c), which is a side surface of the light-guiding plate (1), a prismatic sheet (3) disposed at a position facing an upper surface (1a) of the light-guiding plate (1), and a reflecting sheet (4) disposed to face a lower surface (1b) of the light-guiding plate (1), light emitted from the light emitting source (2) enters the light-guiding plate (1), and the light being adapted so as to change the path thereof in the light-guiding plate (1) and then, the light is emitted from the upper surface of the light-guiding plate and enters the prismatic sheet (3), and the light is adapted to arrange a direction thereof in the prismatic sheet (3) to irradiate illumination light emitted from a from exit surface which is the upper surface (1a) of the prismatic sheet to an object, and the prismatic sheet (3) including a lens mechanism provided on the final exit surface and configured to refract the light in the prismatic sheet (3) and direct the light to the object.

REFERENCES:
patent: 5050946 (1991-09-01), Hathaway et al.
patent: 5748828 (1998-05-01), Steiner et al.
patent: 5914760 (1999-06-01), Daiku
patent: 2003-59321 (2003-02-01), None

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