Patent ID: 7626492
Filing Date: 2009-12-01
Classification: G01J

Abstract:
1. An ultraviolet light detection device for detecting ultraviolet light radiated to an occupant of a vehicle, the device comprising: a detecting element including an ultraviolet detector for detecting intensity of ultraviolet light radiated inside of the vehicle, wherein the ultraviolet detector is made of lanthanum-doped lead zirconate titanate (PLZT); and an electrical unit for outputting an ultraviolet light detection signal representing that a predetermined or more amount of ultraviolet light is radiated to the occupant, wherein the ultraviolet detector sends ultrasonic wave to an incidence direction of ultraviolet light, and detects ultrasonic wave reflected by an object to be detected, and the electrical unit outputs the ultraviolet light detection signal when the detecting element detects the predetermined or more amount of ultraviolet light and when the object is determined to be the occupant of the vehicle based on the reflected ultrasonic wave.