the first infrared thermometer is harmless to the human body;

thermometer is passive to accept infrared radiation emitted by objects, so without any damage.

the infrared temperature measurement by optical system, photoelectric detector, signal amplifier, signal processing and display output parts. Optical system convergence within its field of view of target infrared radiation energy, the size of the field by the thermometer optical components and their location. Infrared energy focusing on the photoelectric detector and translated into corresponding electrical signals. The signal after amplifier and signal processing circuit, and according to the instrument internal algorithm and target emissivity adjusted to the temperature of the measured target.

in nature, all object temperature above zero constantly emit infrared radiation energy into the surrounding space. The size of the object's infrared radiation energy and one by one according to the distribution of the wavelength and the surface temperature has a very close relationship. Therefore, based on the object of the radiation of infrared energy measurement, can accurately determine its surface temperature, which is the objective basis which is the basis of the infrared radiation temperature measurement.

thermometer not emit infrared, is to detect infrared intensity. Once have fever will emit infrared object, after the detection of infrared intensity can analyze how high temperature, it is harmful to human body absolutely impossible.

but don't have the best infrared light eyes, because that belongs to the strong light, light eyes, for a long time is bad for your eyes, like old eyes to see the sun, it a little damage to the eyes.