Light projection unit and light projection device

摘要

A light projection unit (20) is provided that can reduce the production of a portion where the light density is excessively increased on a fluorescent member (22). This light projection unit includes: a light collection member (21) that includes a light entrance surface (21a) and a light emission surface (21b) which has an area smaller than that of the light entrance surface; a fluorescent member (22) that includes an application surface (22a) to which the laser light emitted from the light collection member is applied and that mainly emits fluorescent light from the application surface; and a light projection member (23) that projects the fluorescent light. The light emission surface (21b) of the light collection member is arranged a predetermined distance from the application surface (22a) of the fluorescent member (22).