| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lamp capable of making a light guide emit light in a linear form. <P>SOLUTION: The lamp 1 includes a light source 2 wherein an optical axis Ax is turned forward, and the light guide 3 arranged in front of the light source 2. The light guide 3 has an incident surface 311 arranged at a position opposite to the light source 2 for making light from the light source 2 incident to the light guide 3; a light-distribution control surface 321 arranged in front of the incident surface 311, wherein a plurality of light-transmitting surfaces 322 for emitting forward the light from the incident surface 311 and a plurality of first reflecting surfaces 323 for internally reflecting the light from the incident surface 311 substantially along a lateral direction are formed in a stair state alternately connected along the lateral direction; a second reflecting surface 33 arranged in the lateral direction of a first reflecting surface 323 and arranged so as to connect the light-distribution control surface 321 and a position in the lateral direction and making the light internally reflected by the first reflecting surface 323 internally reflect in front; and an emitting surface 34 arranged in front of the second reflecting surface 33 and emitting the light internally reflected by the second reflecting surface 33. <P>COPYRIGHT: (C)2013,JPO&INPIT |
