LIGHT GUIDE PLATE WITH NON-EQUILATERAL TRIANGLE LENS STRUCTURE
PROBLEM TO BE SOLVED: To provide a light guide plate with a non-equilateral triangle lens structure capable of effectively emitting light and decreasing cost. SOLUTION: The light guide plate 11 has a light-incident face at a side face, a light-emitting face with a plurality of non-equilateral triang...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a light guide plate with a non-equilateral triangle lens structure capable of effectively emitting light and decreasing cost. SOLUTION: The light guide plate 11 has a light-incident face at a side face, a light-emitting face with a plurality of non-equilateral triangle lenses 14 at the other side, and a reflecting face at a bottom face. The non-equilateral triangle 13 takes on an obtuse triangle, with an angle between a lens bottom face and a lens side face of 90° or more. A light source device emits light from a light source incapable of controlling emission or a plurality of light beams controlled to be in parallel, and that, lets all light beams naturally emitted within the light guide plate 11 or, can adjust them to be incident. The light beams are guided to the non-equilateral triangle lens 13 through the light guide plate 11, guided to a specific direction by total reflection of the non-equilateral triangle lens 13, and light flux irradiated by the non-equilateral triangle lens 13 is irradiated from a specific position of the light guide plate. COPYRIGHT: (C)2006,JPO&NCIPI |
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