The damage of laser pointer intensity to eyes
The use of lasers will bring special dangers. The laser beam does not penetrate deeply into biological tissues, and mainly damages the skin and eyes. This is the degree of damage of wavelength (in nanometers), intensity (output power in watts) and irradiation time dependent. Due to its structure, the eye is particularly sensitive compared to laser radiation. When the laser beam passes through the lens and vitreous body through the cornea, the retina and there cause irreparable damage. Generally speaking, the higher the output power of the laser pointer, the higher the risk to the eyes and skin: Although the output power up to 1 mW (the power allowed by the laser pointer) is usually not dangerous, the premise is that if the instructions and warnings are followed, It can be expected that lasers with higher output power will damage the eyes and/or skin.
Tags
Technology
Laser 1 is a device that emits a coherent beam. Due to the good bundling of radiation, the beam diameter changes even at relatively large distances by only a little bit. Irradiance, that is, the power per unit area (power density), the laser radiation is only slightly reduced with the increase of the distance from the source, so it can be dangerous even in the long distance of the corresponding high power.Yes. From a laser safety perspective, the situation has become more complicated with the development of new diode lasers that produce 670, 650, and 640 nm light. As the wavelength emitted by the diode laser becomes shorter, the output power level remains at 5 mW. So today we have a 5mW 640nm Laser pointer beam, which is very bright for the eyes. In addition, brighter pointers are now available on the market. Its wavelength is 533 nm (green). This new technology uses dual-frequency neodymium:YAG lasers that block infrared components.
2021-09-27 12:18:24
Your Answer: