We all know that 520nm green laser diode has many applications in daily life, for example, it is common on the level meter. So do you know what it does? What are the main applications?

Speaking of the wavelength of 520nm, it belongs to the "pure green light" range in the visible spectrum. This kind of light is pure in color and high in brightness, and it is easier to be captured by human eyes visually. To put it simply, under the same power, green light is more conspicuous than red light and blue light, which is why many rangefinders, laser pens and even stage lights are more and more inclined to "green light".

Take laser ranging for example. In the past, red laser was used, although it can be measured, but in strong light environment, red light is easily "submerged" by sunlight. After changing to 520nm green light, the light spot can still be seen clearly in the outdoor noon sun, and the measurement distance is further. For example, rangefinders and line detectors on construction sites have basically started to lean in the direction of green light, because they are practical, clear and convenient.

Another example is the field of laser medical treatment. Green laser can be well absorbed by hemoglobin, so it has applications in ophthalmology and dermatology. For example, when doing fundus surgery, removing red blood and stopping bleeding, doctors like to use green laser, which has concentrated and accurate heat and is not easy to hurt surrounding tissues.

Of course, green light is also very popular in industry. Nowadays, in many machine vision systems, the light source used is green laser. Because in contrast detection, green light can make the surface details more obvious and the edges clearer. For example, in the detection of metal surface scratches, glass thickness and component positioning, the "resolving power" of green light is particularly high.

Generally speaking, the 520nm green laser diode has a wide range of functions, which can be used for ranging, positioning and detection, as well as on the stage, in the laboratory and even in the hospital. Its advantages are not only bright, but also friendly to human eyes, high precision and strong penetration.

Many people may think that laser is high-tech. In fact, in life, we are dealing with it every day, from supermarket code scanning and site ranging to medical surgery and optical inspection. That seemingly small beam of green light is behind a set of stable light source system.