Tips for buying high quality laser Pointers
For astronomy enthusiasts, should the power and price of star springs be determined relative to the requirements of star bumping into them? I think the power of 20mW to 50mW is more appropriate, and the power of more than 50mW can feel special publicity under dark indoor conditions. The main prize green laser pointer is related to its bandwidth and stability, the narrower the bandwidth, the more expensive the price, but the human eye can not distinguish, at this time the bandwidth so financially strapped friends choose power below 50mW, the price of the laser pen is less than 100 yuan more appropriate. In addition, the laser pen usually consumes more power, in line with the principle of environmental protection and money, bring a good battery is also very necessary. Experts say the human body can withstand about 0.4 milliwatts of laser power, which can cause permanent vision loss if the power of the laser beam causes eye damage, severe damage, or burns if it comes into direct contact with the skin for a long time. Prolonged contact with a high-powered laser pointer can cause permanent damage to the macula, affecting vision for life.
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Lasers, and laser Pointers, not toys. The high powered laser beam should not be deliberately aimed at a person, as radiation output of more than 1 mW can cause eye damage, which may damage the vision of the person concerned in the long term. Class 2 laser Pointers can also cause glare, which can lead to other accidents. If the lid closure reflex is suppressed, there is a risk of permanent eye damage even with a Level 2 laser pointer. The quality of the laser crystal is particularly important. Low cost is the reason for the low price, so mass manufactured laser crystals are of poor quality. Sloppy laser Pointers are cheap, but there's always a risk at first, so people opt for sloppy laser crystals. A sloppy laser pointer is not as bright as a real one over the same power output range. Sloppy laser crystals usually don't have infrared lasers, and infrared light is so dangerous that people don't notice it until it seriously damages their eyes. Therefore, you should pay special attention to whether the laser crystal passes through the infrared filter. Infrared filter with green laser Pointer It is not only much brighter than sloppy lasers, but also the safest choice for laser enthusiasts
2021-12-17 10:47:51
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