| 摘要 |
PROBLEM TO BE SOLVED: To provide a photoelectric sensor device certainly detecting an object even when the object to be measured is a transparent member such as glass. SOLUTION: The photoelectric sensor device includes a light projecting part projecting light toward a detection region of the object and a light-receiving part receiving light projected from the light projecting part through the detection region and detects the existence of the transparent member in the detection region from the light amount received by the light-receiving part. The incident angleθof the light, projected from the light projecting part toward the transparent member and irradiated to the transparent member, is set to be tilted to 40°or more where the reflectance at the surface of the transparent member becomes unignorable. COPYRIGHT: (C)2010,JPO&INPIT |
