| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting unit which can change a lighting range with reduced brightness unevenness. <P>SOLUTION: An LED 100 is mounted on a base 101 disposed at one corner of a substantial square shape. Outgoing light of the LED 100 is incident obliquely on a reflector 102, and guided to the whole surface from the one corner of the lighting unit. The reflector 102 is configured such that the reflectivity is low at a position close to the LED 100 and increases as it goes away from the LED 100, and reflects the outgoing light of the LED 100 toward a diffuser plate 107. Reflectors 103, 104 are reciprocated in directions of arrows A, B respectively to change the lighting range by the lighting unit. <P>COPYRIGHT: (C)2011,JPO&INPIT |
