| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a luminous flux control member in which all of stabilization of optical performance, easiness in manufacturing, and improvement in light utilization efficiency are achieved, and to provide an optical device having the same. <P>SOLUTION: A reflection face 15 is formed in a plane shape which once intersects with a virtual plane and whose tip end most apart from an emission region 5 is located radially inner than a base end closest to the emission region 5. The virtual plane is inclined with respect to an optical axis connecting the tip end and base end of the reflection face 15. With this plane shape, deviation from designed light distribution of distribution of light emitted from the emission region 5 accompanying deviation of the light axis and the center axis of the light emitted from a light source is suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
