| 摘要 |
PROBLEM TO BE SOLVED: To provide a light sensor which can show the light from a light emitting diode (LED) uniformly from any viewing direction to see a filter.SOLUTION: A light sensor 10 comprises a filter 50 in a hemispherical shell shape assembled to a holder 20 which has a pedestal part 21 on which a sensor chip 30 and a light emitting diode (LED) 40 are arranged. The filter 50 has a lens part 51 which collects external lights in a receiver 31 and a spherical shell part 52 on the LED 40 side than the lens part 51. The hemispherical shell shape 52 has a specular surface 53 processed on an internal surface 54 of the spherical shell part 52, as a reflection part which reflects the light reflected from the LED 40 to the opposite side of the lens part 51 and guide it to the lens part 51. From above, the light from the LED 40 toward the opposite side of the sensor chip 30 can be collected to the lens part 51 side. |
