| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light emitting device that does no generate loss in the output light intensity of a light source and can perform stable control. <P>SOLUTION: The light emitting device includes the light source which has a light emission part on a predetermined surface and emits light from the light emission part, a light receiving element which is so disposed as to be capable of receiving leakage light leaking from a surface other than the predetermined surface, and a control part which controls the light emitted from the light source based on a signal obtained by receiving the leakage light by the light receiving element. <P>COPYRIGHT: (C)2011,JPO&INPIT |
