| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light emitting device that enhances output and reduces the size. <P>SOLUTION: In the light emitting device 1000, a first reflection surface 212 and a third reflection surface 232 are disposed at the position where the optical path length D1 of first emission light L1 from a first emission surface 162a to the first reflection surface 212 is equal to the optical path length D3 of third emission light L3 from a third emission surface 162b to the third reflection surface 232, a second reflection surface 222 and a fourth reflection surface 242 are disposed at the position where the optical path length D2 of second emission light L2 from a second emission surface 164a to the second reflection surface 222 is equal to the optical path length D4 of fourth emission light L4 from a fourth emission surface 164b to the fourth reflection surface 242, and the travelling direction of the first emission light L1 reflected by the first reflection surface 212, the travelling direction of the second emission light L2 reflected by the second reflection surface 222, the travelling direction of the third emission light L3 reflected by the third reflection surface 232, and the travelling direction of the fourth emission light L4 reflected by the fourth reflection surface 242 are equalized. <P>COPYRIGHT: (C)2011,JPO&INPIT |
