| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source unit ensuring the illumination distribution of high uniformity on an irradiated surface, by suppressing the difference of emission efficiency of the light-emitting element on each heat sink block, in a configuration where the heat sink is divided into a plurality of heat sink blocks, and the heat sink blocks are juxtaposed in one direction.SOLUTION: In a light source unit where a plurality of luminous elements composed by mounting a plurality of light-emitting element substrates each provided with a light-emitting element on heat sink blocks, are juxtaposed in one direction, the light-emitting element substrates mounted on the respective heat sink blocks are arranged to be located on the same plane. A clamping mechanism for clamping the plurality of luminous elements in one direction is provided, and the heat sink blocks related to the luminous elements adjacent to each other are held while adhering the end faces facing each other. |
