| 摘要 |
PROBLEM TO BE SOLVED: To minimize reduction of condensation property at a condensation point even if a light emission point of a light source is large.SOLUTION: A condensation type light guide 8 includes: a reflection surface 40 that extends from an LED package 24A including an LED chip 26 being a plurality of light emission points at least to the vicinity of a receiving point, in which the LED chip 26 is set at a first focal point f1 and the light receiving point is set at a second focal point f2, and that is a curved surface that condenses light from the LED package 24 and guides to the light receiving point; and an optical control element 60 that is internally provided to an end of the reflection surface 40 on the light receiving point side. The optical control element 60 performs control such that light oriented to the reflection surface 40 at the end on the light receiving point side is deflected and an emission angle α of emission light is equal to or smaller than a given angle.SELECTED DRAWING: Figure 12 |
