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US 2006/0187676 A1Published application
Light guide plate, light guide device, lighting device, light guide system, and drive circuit
AssigneeSharp Kabushiki Kaisha
InventorTakuro Ishikura
Life of this patent
Estimating the term…
Abstract
A light guide plate 2 in accordance with the present invention includes a bend section 13 in which external light incident to a surface opposite a surface 11a is turned into a direction from a surface 13d to the surface 11c by one reflection so that the light enters a light guide section 11. Therefore, a light guide plate realized which is applicable in reducing the thickness of a backlight device and increasing the illumination surface of the backlight device in area.
Claims50
A light guide plate, comprising:
- a light guide section for guiding predetermined light incident from a pre-set direction along a predetermined surface so that the incident light exits through the predetermined surface;
- and
- a bend section for turning external light incident to a surface opposite the predetermined surface into the pre-set direction by one reflection so that the external light enters the light guide section.
A light guide plate, comprising:
- a light guide section for guiding predetermined light incident from a pre-set direction along a predetermined surface so that the incident light exits through the predetermined surface;
- a bend section for turning external light incident to a surface opposite the predetermined surface into a predetermined direction by one reflection;
- and
- another light guide section for guiding inside thereof the external light turned into the predetermined direction by total reflection and turning that light into the pre-set direction at a plurality of predetermined positions so that the light enters the light guide section.
1 more element
A light guide plate, comprising:
- a light guide section for guiding light incident from a fifth direction along an illumination surface so that the incident light exits through the illumination surface;
- and
- a second surface including:
- a reflection region for turning external light incident to a surface opposite the illumination surface into the fifth direction by one reflection so that the external light enters the light guide section;
- and a transmission region allowing the external light to pass therethrough toward the illumination surface.
2 more elements
A light guide plate, comprising:
- a light guide section for guiding light incident from a fifth direction along an illumination surface so that the incident light exits through the illumination surface;
- and
- a reflection surface for turning external light incident to a surface opposite the illumination surface into the fifth direction by one reflection so that the external light enters the light guide section, the reflection surface including at least a third reflection surface and a fourth reflection surface both being tilted with respect to the illumination surface, the fourth reflection surface being tilted with respect to the illumination surface by a smaller tilt angle than the third reflection surface and disposed opposite the illumination surface with respect to the third reflection surface.
A light guide plate, comprising:
- a light guide section for guiding light incident from a fifth direction along an illumination surface so that the incident light exits through the illumination surface;
- and
- a reflection surface for turning external light incident to a surface opposite the illumination surface into the fifth direction by one reflection so that the external light enters the light guide section,
- wherein:
- the light guide section includes a plurality of continuous incident surfaces which allows the external light turned by the reflection surface to enter the light guide section therethrough;
- and
- those of the continuous incident surfaces which are adjacent to each other make an angle greater than 90°.
4 more elements
A light guide plate, comprising:
- a light guide section for guiding light incident from a fifth direction along an illumination surface so that the incident light exits through the illumination surface;
- and
- a reflection surface for turning external light incident to a surface opposite the illumination surface into the fifth direction by one reflection so that the external light enters the light guide section,
- wherein:
- the reflection surface is constituted by a plurality of continuous planes;
- those of the planes which are adjacent to each other have an intersecting line thereof being tilted with respect to the illumination surface;
- and
- the planes each have a normal thereof pointing in a different direction from the others.
5 more elements
A light guide plate, comprising:
- a light guide section for guiding predetermined light incident from a sixth direction along a predetermined surface so that the incident light exits through the predetermined surface;
- a bend section for turning external light incident to a surface opposite the predetermined surface into a seventh direction by one reflection;
- and
- another light guide section for guiding inside thereof the external light turned into the seventh direction by total reflection and reflecting that light into the sixth direction from a plurality of reflection surfaces so that the light enters the light guide section,
- wherein
- the reflection surfaces grow in area with increasing distance from the bend section.
3 more elements
Dependencies are inferred from the claim text.