How to distinguish between red or green lasers?
Red light: red light has a wavelength of 650-660nm; green light: a wavelength of 532nm, green light is brighter than red light, and the beam is more obvious than red light. Is the Laser pointer red or green? Intuitively, green is brighter. Red is not dazzling at night, and green can be seen clearly during the day. Although both are laser pointers, there are still differences: under the same power condition, the brightness of the two color laser pointers is different. In other words, for the eyes, the green one should be brighter; under the same power condition, the red one is cheaper; under the same power condition, the green range should be selected. About 3 kilometers. As for the good or bad, it depends on where you use it. Generally, the red light is the most common for page turning pens, because they are cheap. The laser pointer is mostly green.
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The conversion efficiency of green light is generally less than 10%, which means that 50mW green light requires 500mW infrared laser tube. Red light is easier to transmit through air, dust, and moisture, so it needs more power to be seen in the light path; green light scatters more in the air than red light (the shorter the wavelength, the greater the scatter), and the eye The sensitivity of green 532nm wavelength is about 8 times greater than that of red 650nm, so the visual effect of green light is about 10 times greater than that of red light. The difference between red and green light: 1. The wavelength of red light is generally 650nm, 635nm; the wavelength of green laser is 532nm. The wavelength of the laser is different, and the light color displayed is different. 2: Under the same power, the light of green light is brighter than that of red light. , Which has a longer range than red light. 3: Some people think that at the same power, red light has a slightly higher burnability than green light. 4: At the same power, red light is relatively weak and belongs to the natural attribute of red light. Green light has strong brightness. The laser is good or bad. It depends on your needs and preferences. For example, if you like the beautiful laser light, choose green light. If you want a higher power, the price is not too high, and the beam is clear, choose Blu-ray flashlight.
2021-09-15 12:31:42
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