Are infrared thermometers harmful to the human body in any way?
At a press conference held by the Joint Prevention and Control Mechanism of the State Council in response to the new coronavirus infection, in response to the question of whether infrared thermometers are harmful to the human body, Feng Luqiu, a researcher at the China Centers for Disease Control and Prevention, responded that the working principle of infrared thermometers is to The infrared thermal radiation of the human body is focused on the detector, and the detector converts the radiation power into an electrical signal. The electrical signal is displayed in units of temperature after being compensated for the ambient temperature.
"So, the infrared thermometer does not emit infrared rays to the human body, but receives the infrared thermal radiation emitted by the human body, so it is not harmful to the eyes or body." Feng Zhaolu said.
Are infrared thermometers harmful to eyes?
Some experts said that the infrared rays emitted by the LED lights in the infrared temperature measurement ceremony are being measured. When being measured, the infrared rays shine on the head, not the eyes. Only if the infrared rays are directly irradiated into the eyes for a long time, it may cause damage to the lens and retina. , but the chance of such damage from an infrared thermometer is almost zero.
Will infrared rays really damage the eyes?
If the intensity of infrared rays is high, it will cause certain irritation and damage to the eyes. In severe cases, it can cause cataracts, retinal damage, and even blindness. Infrared rays with a wavelength less than 1.5 microns will be absorbed by the eyes to a certain extent. If the infrared rays directly illuminate the eyes, the liquid in the eyeballs may react and cause some eye diseases. Infrared thermometers are not designed to emit infrared rays, but are only used for positioning. , measured by the heat emitted by the human body. Please feel free to use infrared thermometers during the epidemic.
Moreover, the editor believes in the power of science. After science and technology tell us how this thermometer works, everyone will no longer worry so much. Moreover, the editor believes in the power of the country. The epidemic will definitely pass, and it is only temporary now.
