As a special light source, laser is widely used in military, aerospace, civilian use, etc. Laser has many characteristics: First of all, laser is color-single, said to be single-frequency. There are several types that can generate different frequencies at the same time. The laser is coherent light. The characteristic of coherent light is that its light waves are all synchronized, and the whole beam of light is like a "train wave". Once again, the laser is highly concentrated, and there is a long period of time, it may be distracting or appetite. The appearance of invisible matter.
Compared with ordinary flashlights, laser flashlights have a small beam divergence angle and high purity of the Laser pointer light, which can make the beam more concentrated, and can also make the beam transmission longer. With the help of the focusing mechanism, the beam can also be diverged. The optical system of the laser flashlight belongs to the category of optical beam expansion. Because the beam expansion ratio is relatively large, the larger the aperture, the more difficult the optical design is. Since green lasers require frequency doubling, it is more difficult to produce than other colors of laser flashlights.
A new type of laser flashlight. The rear and middle parts of the shell are made of plastic material, the front end of the shell is made of metal material, and the front end of the shell and the middle part are connected by a threaded structure; the light source is fixed on the upper surface of the heat sink through an insulating gasket. The lower surface of the heat sink is isolated from the control circuit by an insulating gasket, and the outer circumference of the heat sink is fixed with the inner wall of the front end of the housing. The utility model realizes the heat dissipation of the main heat source inside the shell through the heat sink closely attached to the light source, which effectively blocks the heat of the light source from diffusing to the middle and rear end of the shell through the air gap; the front end of the shell is made of metal material, which effectively diffuses the light source The heat generated and the heat sink form a closed metal heat sink, which separates the main heat source of the laser flashlight at the front end and spreads it out.