Adjustable laser pointer focus improves its reliability
The beam with high energy density is one of the advantages of the laser pointer, making the focal spot diameter as small as possible to create a tiny gap. Because the focal length of the focusing lens is smaller, the diameter of the focal spot is smaller. High quality, high precision cutting, cutting lens diameter and effective focal length of other materials, so as to control the focal length position, cutting surface of the material is very important. Laser cutting head in the cutting, the height of the nozzle can not be changed, that is, the height of the nozzle is not changed, 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 to lower the focusing lens and reduce the focus; If you raise the focusing lens, the focus will be higher. Through this principle, the motor is used to adjust the position of the focusing lens up and down to achieve automatic focusing.
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With automatic focusing function, greatly improve the processing efficiency of blue laser pointer cutting machine: greatly shorten the drilling time of thick plate; When machining workpiece of different material and thickness, the machine can quickly and automatically adjust the focus to the appropriate position. When the focal length lens is lowered, the focal length is reduced; As the focal length lens increases, the focal length increases. This is really a way to focus a laser pointer. Using focal length drive motor up and down movement, to achieve automatic focusing. Another method is auto-focusing: before the beam enters the focusing lens, the variable curvature lens group (or adjustable mirror) is focused by changing the curvature of the mirror, changing the divergence Angle of the reflected beam, and changing the focus position.
2021-09-23 12:40:54
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