Patent ID: 6357909
Filing Date: 2002-03-19
Classification: G01J

Abstract:
A radiation thermometer, comprising:a window member which can transmit an infrared ray from a measurement target; an infrared ray sensor for detecting said infrared ray; light-guiding means for guiding said infrared ray which is transmitted through said window member from the measurement target to said infrared ray sensor; a temperature-sensitive sensor arranged near said infrared ray sensor for measuring a temperature of said infrared ray sensor; case means which covers at least said light-guiding means, said infrared ray sensor and said temperature-sensitive sensor and which comprises a probe portion which is inserted into an opening of a living being; wherein said probe portion is provided with an opening portion only at an infrared ray introducing side of said light-guiding means and a holding member for holding said window member at said opening portion of the probe portion characterized in that a first water proofing means is arranged between said holding member and said probe portion, a second water proofing means is arranged between said holding member and said light-guiding means and said first and second water proofing means are both arranged at said opening portion of said probe portion.