Sensing device with conical reflector for making two-dimensional optical radar

A sensing device of a two-dimensional optical radar, comprising:

• a sensing module;
• a light source module, the light source module being disposed in a first direction adjacent to the sensing module, and the light source module providing a light source;
• a diffusing element, the diffusing element being disposed in the first direction adjacent to the light source module, the diffusing element receiving the light source, and diffusing the light source toward the first direction to form a diffused light;
• a reflective element, the reflective element being disposed in the first direction of the diffusing element diffusing the light source, the reflective element being surroundingly disposed with a reflection surface, the reflection surface receiving the diffused light and reflecting the diffused light onto a reflector, when the reflector receiving the diffused light, the reflector reflecting the diffused light to form a reflected light, and reflecting the reflected light onto the reflection surface in order to reflect the reflected light by using the reflection surface;
• and
• an optical lens, the optical lens being disposed between the light source module and the diffusing element, the optical lens being internally provided with a hollow portion disposed in the first direction of the light source module providing the light source in order that the light source penetrating the hollow portion, and the optical lens receiving the reflected light and directing the reflected light onto the sensing module;
• wherein a light beam from the light source penetrating the hollow portion of the optical lens is directly projected to the diffusing element.