ILLUMINATION LAMP FITTING

摘要

PROBLEM TO BE SOLVED: To provide a technique capable of relieving color quality unevenness in a lighting device while miniaturizing an optical lens.

SOLUTION: The optical lens 3 of an illumination lamp fitting 1 has a first incident surface 31 which makes light incident to the optical lens and emitted from a light-emitting diode turn to a light-emitting diode optical axis direction by refracting the light; second incident surfaces 32 arranged on the circumference of the first incident surface 31; total reflection surfaces 33 which make the light incident from the second incident surfaces 32 turn to the light-emitting diode optical axis direction by internally reflecting the light; a first light-emitting surface 34 being a surface arranged at a location corresponding to incident light from the first incident surface 31 in the light-emitting diode optical axis direction and emitting light incident from the first incident surface 31; and a second light-emitting surface 35 which is a surface arranged at a location corresponding to the incident light from the second incident surfaces 32 in the optical axis direction and becomes an uneven curved cross section viewed from a plane perpendicular to an optical axis and gives lens cut formed by making the uneven curved cross section rotate around the optical axis while the uneven curved cross section is oscillated around one point on the optical axis.

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