Infrared Ear Thermometers
NASA collaborated with Diatek Corporation to develop the infrared aural thermometer. This device measures thermal radiation emitted by the patient's eardrum in much the same way the temperature of stars and planets is also measured.
It does this by inferring the temperature based on the thermal (black-body) radiation emitted by an object being measured. Each device consists of a lens to focus infrared thermal energy onto a detector which converts the energy into an electrical signal. This signal is then converted to temperature, after being ambient temperature is compensated, and displayed on the device.
The immediate benefit of this device is that it avoids contact with mucous membranes and can easily be used for measuring temperatures of newborn patients. Today they used in a wide range of applications from monitoring hot spot temperatures in mechanical and electrical systems to checking patient temperatures.