After precision polishing, optical lenses are usually low in transmission rate and must be coated to use. The coating is a process of superimposing the film on the surface of the lens by steaming the film on one layer and one layer. The thickness of the film for each layer needs to be strictly controlled. There are two ways of controlling the thickness of the film, such as light control and crystal control. The thickness of the membrane is usually based on nanoscale nm.
The range of visible light ranges 400-700nm, which is the color of the human eye. If the green is 532nm and the red light is 633nm, the difference between the two is 100nm. The lenses used in this area are very high in the peak value of the center of the coating, and the usually controlled offset is within 5nm. The shorter the wavelength, the higher the position precision for the central peak, such as the UV 355nm and 266nm, and the offset less than 5nm. This is a very harsh test for the coating equipment and process.
The lens of a metal laser cutting machine is a precise component that is easily dirty and easy to stick to dust.
It is necessary for the metal manufacturers to clean the lenses carefully and carefully. The following notes are given on how to clean the lens of the laser cutting machine.
A, when we take out the lens, we must wear rubber gloves, which is not easy to be stained by the grease and dirt on the hand, and it is not easy to destroy the performance of the lens application.
B, do not use any clips or tweezers pick tools to avoid damage to the lens. C, do not put the lens on the surface of hard and rough objects, and should put it on the lens paper to avoid the scraping of the lens.
Safety operation and protection of optical glass for laser engraving machine
The above is a matter of attention to laser optical glass for optical engraving machines. Here we are talking about specific safety operations.
1. observe the safety operation rules of the general cutting machine. The laser is started in strict accordance with the laser initiating program.
2. the operator must be trained to be familiar with the structure and performance of the equipment and the knowledge of the operating system.
3. wear good labor protection articles according to the regulations, and must wear protective glasses in the vicinity of the laser beam.
4. before making a clear understanding of whether a material can be irradiated or heated by a laser, do not process it to avoid the potential danger of smoke and steam.
5. the operator is not allowed to leave the post or the trustee to be managed when the equipment is opened. If it is necessary to leave, the power switch should be stopped or cut off.
6., fire extinguishers should be placed wherever they are accessible. When they are not processed, they must turn off the lasers or light gates. Do not put paper, cloth or other inflammable materials near the unprotected laser beam.
7. when the exception is found during the process of processing, the machine should be stopped immediately, to eliminate the fault in time or to report to the supervisor.
8. keep the laser, the bed and the surrounding site clean, orderly, and without oil, and the work pieces, board and waste are piled up according to the regulations.
The use of 9. cylinders, should avoid crushing welding wire, so as to avoid leakage accident. The use and transportation of the cylinder should be observed in the supervision regulations of the gas cylinder. The gas cylinder is forbidden to burst in the sun or close to the heat source. When the bottle valve is opened, the operator must stand on the side of the bottle.
10. the high pressure safety regulations should be observed during maintenance. Every 40 hour or weekly maintenance, 1000 hours per operation or every six months of maintenance should be carried out in accordance with the regulations and procedures.
After 11. opening, the machine should be operated at low speed X and Y. Check and confirm whether there is any abnormal condition.
12. after the input of the new work-piece program, it should be run first and check its operation.
13. work, pay attention to observe the operation of machine tools, so as to avoid the cutting machine out of the effective range or two collisions caused by the accident.