INFRARED RAY SOURCE AND SENSOR AND GAS SENSOR USING INFRARED RAY SOURCE

Japanese Patent JP2014123476

A

PROBLEM TO BE SOLVED: To provide an infrared ray source having a larger total amount (integration amount) of infrared ray of a wavelength region in some range including a predetermined wavelength.SOLUTION: A infrared ray source 101 includes a heating element 15, and a radiator 23 having an outermost surface composed of a metal, and radiates infrared ray having a peak at a predetermined wavelength. On the surface of the radiator 23, micro cavities MC having a micro rectangular concave cross section are arranged two-dimensionally at a constant period. Following relations are satisfied; 0.6