LIGHT SOURCE UNIT, LIGHT SOURCE DEVICE, AND DISTANCE MEASUREMENT DEVICE

Provided are a light source unit and light source device capable of enhancing safety and/or producing reflected light having a desired cross-sectional shape, and a distance measurement device comprising the light source unit or light source device. The light source unit comprises a light source and a holding body for holding the light source. The holding body has a diffuse reflection surface for diffusely reflecting at least some of the light from the light source toward an object. The light source device comprises a light source and a reflection member for producing reflected light by reflecting at least some of the light from the light source. The reflection member includes a plurality of curved mirrors that are arranged regularly along a reference plane and are struck by the light from the light source. Each of the plurality of curved mirrors has curvature in a first axial direction and second axial direction that are orthogonal to each other within the reference plane. 提供一种能够提高安全性和/或生成具有期望截面形状的反射光的光源单元、光源