Optical device and color display unit using the optical device

Details Optical device and color display unit using the optical device Optical device and color display unit using the optical device

2007-12-25

2007-12-25

Healy, Brian M. (Department: 2883)

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

C385S129000, C385S131000, C385S014000, C385S901000, C385S036000, C349S064000, C349S061000, C349S062000, C359S599000, C359S640000, C359S738000

Reexamination Certificate

active

11016268

ABSTRACT:
Optical device and color display unit to correct an angle of visibility, emphasize front brightness or diffusion degree, improve brightness and the performance of angle of visibility, and moreover improve the performance of chromaticity. An optical device is a film-like optical device for angle-correcting light toward a predetermined direction and of two materials whose refractive index difference is at least 0.1 or over, formed so that one material constitutes a plurality of light guide paths having total reflection at the boundary with the adjacent other material, in which the light guide paths are formed so that they are not arranged at equal intervals or they have different cross sections from each other and the ratio of the width or diameter of the light input portion of each of the light guide paths to the film thickness of an optical device is at least 1:10 or more.

REFERENCES:
patent: 6751023 (2004-06-01), Umemoto et al.
patent: 7074463 (2006-07-01), Jones et al.
patent: 7179513 (2007-02-01), Jones et al.
patent: 2001/0012159 (2001-08-01), Umemoto et al.
Japanese Publication No. 2000-241812 published on Sep. 8, 2000.
Japanese Publication No. 2000-056105 published on Feb. 25, 2000.
Japanese Publication No. 09-127331 published on May 16, 1997.
Japanese Publication No. 2000-084995 published on Mar. 28, 2000.

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