LIGHTING DEVICE AND MEASURING DEVICE
To provide a technique of equalizing light to upper directions from a lighting device.SOLUTION: A lighting device 5 includes a light guide member 7, a guided light entering surface 71, and at least one light source 9. The light guide member is formed into a plate by a transparent member. A guided li...
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Zusammenfassung: | To provide a technique of equalizing light to upper directions from a lighting device.SOLUTION: A lighting device 5 includes a light guide member 7, a guided light entering surface 71, and at least one light source 9. The light guide member is formed into a plate by a transparent member. A guided light entering surface is a surface of the light guide member. The at least one light source is arranged so that light is introduced into the guided light entering surface. The light guide member propagates light from the light source to the guided light entering surface, into the light guide member. In the light guide member, an end surface in the thickness direction, which is a part of a bottom surface near the light source, is formed in a non-diffused reflection surface, where diffused reflections are difficult to happen.SELECTED DRAWING: Figure 2
【課題】照明装置において、簡便に、上方への光を均等化する技術を提供する。【解決手段】照明装置5は、導光部材7と、導光入射面71と、少なくとも1つの光源9と、を備える。導光部材は、透明部材によって板状に形成される。導光入射面は、導光部材が備える面である。光源は、導光入射面に光を入射するように配置される。導光部材は、光源から導光入射面に入射された光を導光部材内に伝搬させる。導光部材は、厚さ方向における端面であって光源に近い側の面である底面のうち少なくとも一部は、乱反射が生じにくい非乱反射面に形成される。【選択図】図2 |
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