An electronic apparatus includes a thermopile array sensor, a reflector, and a temperature detection unit. The thermopile array sensor includes a plurality of thermopile elements arranged in a two-dimensional array pattern and a temperature detection surface divided into a plurality of predetermined regions aligned in vertical and horizontal directions, and the thermopile elements output a temperature detection signal corresponding to a temperature of the respective predetermined regions. The reflector is set at an angle to reflect infrared light emitted from a measurement point located outside of a viewing angle of the thermopile array sensor, so as to allow the infrared light to be incident on the temperature detection surface. The temperature detection unit detects the temperature on the basis of the temperature detection signal outputted from each of the thermopile elements. The thermopile array sensor and the reflector are located inside the electronic apparatus.