JP2009216678A5 - - Google Patents

Claims (11)

An optical sensor module provided in an optical sensor used for identifying an object to be identified,
A light source ;
A light guide that is disposed on an optical path between the light source and the identification target and propagates light from the light source from a first end surface to a second end surface facing the first end surface;
With
The light guide has a light guide with an even-numbered prism shape ,
An optical sensor module, wherein a diffusion surface for diffusing light is formed on the first end surface. 2. The optical sensor module according to claim 1, wherein the light guide includes a light guide formed of any one of a quadrangular prism, a hexagonal prism, and an octagonal prism . The diffusing surface has a plurality of concave portions formed regularly in the vertical and horizontal directions, for each of the vertical and horizontal directions, according to claim 1 wherein the recess adjacent, characterized in that it is formed so as to overlap partially or 3. The optical sensor module according to 2. The optical sensor module according to claim 3 , wherein the recess is a semi-cylindrical groove . The said light guide has an octagonal prism-shaped light guide provided in the said 1st end surface side, and a cylindrical light guide provided in the said 2nd end surface side from Claim 1 characterized by the above-mentioned. 5. The optical sensor module according to any one of 4 above. The optical sensor module according to claim 1 , wherein the light source includes a plurality of light sources that emit light having different wavelengths . The optical sensor module according to claim 6, wherein the plurality of light sources are arranged side by side on a substrate. A housing portion for accommodating the light source and the substrate;
  The optical sensor module according to claim 7, wherein the light guide and the housing portion are integrally formed. 9. The optical sensor module according to claim 1, wherein the number of the light sources is two, one emitting blue light and the other emitting ultraviolet light. An optical sensor module according to any one of claims 1 to 9,
  A light receiving unit for receiving light from the identification object;
  An optical sensor comprising: The optical sensor according to claim 10, wherein the light receiving unit receives transmitted light that has passed through the identification target.