When was the laser pointer invented?
The affordable pocket laser pointer dates back to the 1980s. However, the concept of lasers can be traced back to the late 1950s. Researchers at Bell Labs proposed the theory of manufacturing lasers in 1958. Two years later, Hughes Aircraft built the first laser, which used ruby, light and mirrors to produce a beam of light. Then, in 1962, the first semiconductor laser came out. Also known as a diode laser, this technology makes laser pointers cheaper and easier to enter the mass market.
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There are many types of Laser pointer, which can be divided into green, red, blue, and blue-violet according to the color. At present, for these four colors, green is the most widely used color laser pointer. According to the power, it is small. 5mw, up to 5000mw, according to the function, there are laser flashlights, and adjustable focal lengths to light cigarettes. After understanding the above, I will answer your questions positively. As far as I know, green light is more suitable for outdoor use.
2021-10-08 09:02:56
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