Due to the continuous development of laser technology, high-power green Laser Pointer are very popular in some special fields. Among all available laser equipment, the high-power 10,000 mW laser pointer is a real surprise for all laser enthusiasts and enthusiasts. The apparent brightness of the illuminated point strongly depends on the wavelength of the emitted light. Most devices work in the red spectral region, and the sensitivity of the eye decreases rapidly as the wavelength increases. A device with 650 nm output appears to be about twice as bright as a device emitting the same output at 670 nm, while a device with 635 nm is still about twice as bright. However, laser pointers with shorter wavelengths are usually more expensive. Unlike traditional lasers, the visibility and brightness of a green laser pointer is about five times that of a red laser.
The star pen refers to the high-power laser pointer, while the energy of the traditional laser pointer is tens of milliwatts, and the display distance is usually 10 meters or less, while the high-power laser pointer can transmit. It is also called a star pen because it can give a good directionality to the night sky, from a few kilometers to tens of kilometers. This is due to the Tyndall phenomenon. When light passes through the colloid (water particles), the bright "path" inside the colloid is observed from the vertical direction of the incident light. This phenomenon is called the Tyndall phenomenon. (Tyndall phenomenon) or Dinzel phenomenon, Dinzel effect, fire effect. The Tyndall effect is the result of particles resisting light scattering (light waves deviating from their original direction, divergence and propagation).