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    • 5. 发明授权
    • Surface light source apparatus
    • 表面光源装置
    • US5779339A
    • 1998-07-14
    • US784409
    • 1997-01-16
    • Satoru KonishiKazushige OhtaKoji KawadaTakashi Obata
    • Satoru KonishiKazushige OhtaKoji KawadaTakashi Obata
    • G02B6/00F21V8/00G01D11/28G02F1/1335G02F1/13357F21V7/04
    • G02B6/0021G01D11/28G02B6/0026
    • A surface light source apparatus is constituted such that an overhang portion overhanging a light source is provided on part of an end surface where the light source of an optical guide plate is arranged in such a manner that it is flush with the front surface of the optical guide plate and that an incident light control unit formed from a resin for diffusing and attenuating light is provided integratedly on at least an overhang portion side out of the overhang portion and the end surface of the optical guide plate, and accordingly light from the light source is transmitted through the overhang portion, radiated in an illumination direction, and diffused and attenuated by the incident light control unit to equalize the amount of light so that it can be used as illumination light. Thereby, the total area of the light emitting portions is increased.
    • 表面光源装置被构成为使得在端面的一部分上设置有悬垂在光源上的突出部分,其中导光板的光源以与光学器件的前表面齐平的方式排列 并且由用于漫射和衰减光的树脂形成的入射光控制单元一体地设置在突出部分和导光板的端表面之外的至少一个突出部分侧上,并且因此从光源 通过突出部分透射,在照射方向上辐射,并被入射光控制单元扩散和衰减,以使光量均匀,使其可以用作照明光。 由此,发光部的总面积增加。