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The production process of green laser optics lens
Posted on:
2021-10-27
The raw materials for green laser optics lens are some oxides, hydroxides, nitrates and carbonates, and phosphates or fluorides are introduced according to the requirements of the formulation. In order to ensure the transparency of glass, the content of colored impurities, such as iron, chromium, copper, manganese, cobalt, and nickel, must be strictly controlled. When ingredients are required, accurate weighing and uniform mixing are required.
The main production process is smelting, forming, annealing and inspection. Then the specific steps are as follows:
①Smelting has single crucible batch smelting method and tank kiln (see kiln) continuous smelting method. Single crucible smelting method can be divided into clay crucible smelting method and platinum crucible smelting method. No matter what kind of smelting method is used, it needs to be stirred with a stirrer, and the temperature and stirring are strictly controlled to make the glass liquid reach a high degree of uniformity. The clay laser focusing mirror crucible can melt most of the crown glass and flint glass, with low cost, and is used when the melting temperature of the glass exceeds the service temperature of platinum. The platinum crucible can smelt high-quality glass that has a serious corrosive effect on the clay crucible, such as heavy crown, heavy barium flint, rare earth glass and fluorophosphorous glass. Platinum crucibles are heated by electricity, generally silicon-carbon rods or silicon-molybdenum rod electric furnaces are used. However, high-frequency heating can be used to manufacture glass that has a high tendency to crystallize, requires rapid cooling, and has certain requirements on the atmosphere.
②The molding methods of green laser optics lens include classical crushing method, rolling method and pouring method. However, leakage molding (using a single crucible or continuous melt to flow out the material liquid) is more and more widely used, and it can be directly drawn or drawn. Gob material is pressed or leaked to form large-size blanks, which improves the utilization rate and yield rate of gobli laser protective mirrors.
③ Annealing In order to eliminate the internal stress of the green laser optics lens to the utmost extent and improve the optical uniformity, a strict annealing system must be established for precision annealing.
④Inspection and measurement of green laser optics lens indicators include: optical constant, optical uniformity, stress birefringence, streaks, bubbles, etc.
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