ILLUMINATION DEVICE, RECOGNIZING DEVICE WITH THE ILLUMINATION DEVICE, AND PART MOUNTING DEVICE

摘要

An illumination device capable of recognizing a detected object without error by properly illuminating the detected object according to the state of the surface thereof even if the surface of the detected object is formed in a mirror finished surface or irregular surface while reducing a cost and a size with a simple structure, a recognizing device having the illumination device, and a part mounting device, the illumination device wherein an annular diffusion plate (14), a fixed plate (15) having a light source for directional light (12) and a light source for diffused light (13) annularly installed on the upper and lower surfaces thereof, and an annular reflective plate (17) reflecting light from the light source for directional light (12) to the detected object (10) are disposed in a case (11) in order from the side of the detected object (10), and through-holes (18, 21, 22) for passing light to an imaging camera (20) therethrough are provided in the case, whereby the diffused light (L1) can be generated by radiating the light from the light source for diffused light (13) to the detected object (10) through the diffusion plate (14) and the directional light (L2) can be generated by radiating the light from the light source for directional light (12) on the detected object (10) after reflecting on the reflective plate (17).