Best military tactical pen flashlight
The beam with high energy density is one of the advantages of the blue laser pointer, so that the focal spot diameter will be as small as possible in order to produce tiny gaps. Because of the smaller focal depth of the focusing lens, the smaller the diameter of the focal spot. High-quality, high-precision cutting, the effective focal depth of the lens diameter and another material are cut, and therefore the focus position is controlled, and the cut surface of the material is very important. When the laser cutting head is cutting, the height of the nozzle cannot be changed, that is, the height of the nozzle does not change, so it is impossible to focus by lifting the cutting head. The height of the nozzle cannot be changed, and the focal length of the focusing lens cannot be changed, so the position of the lens can only be changed, the focusing lens is lowered, and the focal point is lowered; if the focusing lens is raised, the focal point will be higher. Through this principle, the motor is used to adjust the position of the focusing lens up and down to realize automatic focusing.
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With the automatic focusing function, the processing efficiency of the laser cutting machine can be significantly improved: the perforation time of thick plates is greatly reduced; when processing workpieces of different materials and different thicknesses, the machine can automatically adjust the focus to the appropriate position quickly. When the focus lens is lowered, the focus is lowered, and when the focus lens is enlarged, the focus is increased. This is indeed a way of focusing the laser pointer. Using the focus lens drive motor for upward and downward movement, automatic focusing is achieved. Another method is auto-focusing: before the light beam enters the focusing lens, the variable curvature lens group (or adjustable mirror), by changing the curvature of the reflecting mirror, changing the divergence angle of the reflected light beam, and changing the focus position.
2021-09-23 12:41:15
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