| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-weight lighting system with less luminance unevenness in a light-emitting region.SOLUTION: A lighting system 100 includes: a light-emitting element 110; a luminous flux control member 120 to control a light distribution so as to narrow light emitted from the light-emitting element 110; an approximately cylindrical-shaped prism member 140 that is formed of a light-transmitting material, has a plurality of prism rows 141, and extends in the direction of an optical axis LA; and an approximately cylindrical-shaped distribution member 150 having light transmitting and diffusing properties. The plurality of prism rows 141 are disposed on an outer circumferential surface of the prism member 140 so as to be parallel to the optical axis LA. |
