SERVO MOTOR WHICH HAS MULTIPLE ILLUMINATION WINDOW

摘要

PURPOSE: A servo motor having a multiple illumination window is provided to detect the change of light by preventing the scattering of light from a light source while maintaining a case rigid. CONSTITUTION: In a servo motor having a multiple illumination window, a case(1) corresponds to a member forming the outer shape of the servo motor. The case includes a light exposure area exposing light from a light source(2) which radiates light in the case. An optical path member(3) includes an optical path passing through a light exposure area which is formed in the case. The optical path member radiates the light from one light source to a plurality of light exposure areas. The optical path member includes a light receiving unit and light transmission unit. The optical path member an illumination unit and also includes at least one of an light diffusion part and a reflecting body.