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Home » News » Blog » How to choose USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens(two)

How to choose USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens(two)

Views:1     Author:Site Editor     Publish Time: 2019-01-16      Origin:Site

        used as reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses when they require their unique properties. Transmissive materials are also used when the designer needs a small amount of laser "cell leakage" through the mirror to the detector to monitor the laser power.  The thermal properties of the substrate are an important selection criterion for reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses. Mechanical properties and cost are also important factors for designers to consider when selecting substrate materials. Table 1 lists the thermal and mechanical properties of silicon and copper. The reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens coating absorbs the laser to raise the temperature of the reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens. The substrate must act as a heat sink to prevent deformation of the mirror and laser beam. Reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses with high thermal conductivity reduce heat due to absorption. The low coefficient of linear expansion ensures that the deformation of the mirror is minimized. The thermal conductivity of copper is 2.5 times that of silicon, but this is offset by their respective linear expansion coefficients; copper has a coefficient of expansion of 6.5 times that of silicon. In summary, silicon has higher thermal stability than copper, resulting in less thermal deformation.

      Surface deformation caused by improper installation is also a major concern for optical engineers. The physical properties of the substrate material determine how thick the substrate must be when the reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens is not deformed and how much mounting pressure it can withstand. By comparing the physical properties of silicon and copper, the slight advantage of silicon in the higher Young's modulus is offset by its lower Poisson's ratio. The deviation of the silicon reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens and the copper reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens of the same thickness due to the mounting pressure is substantially the same.

    Other key parameters are hardness and mass density. The copper used as the substrate is pure, finely textured and polycrystalline oxygen-free copper. It is very soft and malleable and difficult to polish with conventional techniques. Therefore, single point diamond turning is widely used to machine copper mirrors. Care must be taken when handling and installing copper mirrors as it is easily scratched or deformed. Finally, because silicon raw materials are cheaper and easier to polish, finished copper reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses are generally more expensive than silicon reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses.

  

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