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Class Information
Number: 362/620
Name: Illumination > Edge lighted panel > Light guide > Emission face > Type of surface > Prism
Description: Subject matter indented wherein the exterior or upper boundary of the emission face has been modified for an optical purpose with the shape of pyramid or triangle.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6244719 |
Surface light source device and liquid crystal display device sign display apparatus and traffic sign display apparatus using the surface light source device |
Jun. 12, 2001 |
| 6239851 |
Planar light source device having polarization separator formed of two sheets with mating triangular prisms and different indices of refraction |
May. 29, 2001 |
| 6222689 |
Surface light source device and asymmetrical prism sheet |
Apr. 24, 2001 |
| 6151169 |
Sheet type optical device and backlighting unit using the same |
Nov. 21, 2000 |
| 6129439 |
Illumination system employing an array of multi-faceted microprisms |
Oct. 10, 2000 |
| 6099135 |
Surface light source element and liquid crystal display device, sign device and traffic control sign device using same |
Aug. 8, 2000 |
| 6086211 |
Side lighted surface light source device having orthogonal projections on light control surface of emission plate and light diffusion member |
Jul. 11, 2000 |
| 6027222 |
Back light device for crystal liquid display |
Feb. 22, 2000 |
| 6011602 |
Lighting apparatus with a light guiding body having projections in the shape of a trapezoid |
Jan. 4, 2000 |
| 5999685 |
Light guide plate and surface light source using the light guide plate |
Dec. 7, 1999 |
| 5966192 |
Surface light source device and a liquid crystal display |
Oct. 12, 1999 |
| 5951138 |
Surface light source device of side light type |
Sep. 14, 1999 |
| 5890791 |
Light control sheet, surface light source unit and liquid crystal display device |
Apr. 6, 1999 |
| 5887964 |
Surface light source device and liquid crystal display |
Mar. 30, 1999 |
| 5863113 |
Plane light source unit |
Jan. 26, 1999 |
| 5851062 |
Prism sheet for surface light source |
Dec. 22, 1998 |
| 5833344 |
Surface light source device of dual light flux generation |
Nov. 10, 1998 |
| 5810464 |
Surface light source device of side light type |
Sep. 22, 1998 |
| 5735590 |
Backlighting device with a transparent sheet having straight ridges |
Apr. 7, 1998 |
| 5711589 |
Plane light source unit |
Jan. 27, 1998 |
| 5668913 |
Light expanding system for producing a linear or planar light beam from a point-like light source |
Sep. 16, 1997 |
| 5648858 |
Liquid crystal display which suppresses interference fringes |
Jul. 15, 1997 |
| 5627926 |
Prism plate for efficiently emitting light flux within a predetermined range, and liquid crystal indicator and indicator illumination method using the same |
May. 6, 1997 |
| 5600455 |
Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface |
Feb. 4, 1997 |
| 5572411 |
Surface light source device |
Nov. 5, 1996 |
| 5479275 |
Backlit liquid crystal display with integral collimating, refracting, and reflecting means which refracts and collimates light from a first light source and reflects light from a second light |
Dec. 26, 1995 |
| 5467417 |
Prism plate for efficiently emitting light flux within a predetermined range, and liquid crystal indicator and indicator illumination method using the same |
Nov. 14, 1995 |
| 5402324 |
Surface illuminant device |
Mar. 28, 1995 |
| 5243506 |
High aspect ratio light emitter having high uniformity and directionality |
Sep. 7, 1993 |
| 5222795 |
Controlled light extraction from light guides and fibers |
Jun. 29, 1993 |
| 5190370 |
High aspect ratio lighting element |
Mar. 2, 1993 |
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