Military precision components（laser resonator、infrared detector、Precision optical prism、Guidance components、Gyroscope window）It is the core unit of national defense equipment，Its accuracy、Stability and durability directly determine the upper limit of equipment performance。according to《General technical specifications for military precision components》（GJB 190-1986），Dimensional accuracy of military precision components≤±0.001mm，Optical performance deviation≤0.1%，And it needs to be within the temperature difference、vibration、Maintain stability under high humidity and other working conditions，And minor pollution、Fogging and condensation、surface wear，It is the core cause of device performance drift or failure。

Vacuum coating is the core process for improving the reliability of military precision components，Weichuang Vacuum relies on high-purity coating materials、Low stress dense membrane system、Precision coating process and maintenance capability of imported equipment，Ensure high consistency of components in mass production、high reliability、High quality rate。Accurate application of superhydrophilic membrane layer，Provides flexibility for precision components、Efficient surface protection solution，It is to solve the problems of minor pollution and fogging、Important support for ensuring long-term stable operation of devices。

High precision for military precision components、High stability requirements，Case Study of Weichuang Vacuum Design Special Film System，No substrate mounting description，Clearly define the reference coating materials for each film system（For technical personnel to design reference），All fit togetherGJB 190-1986Military Precision Standards，as follows：

（1） laser resonator（1064nmband）Specialized low loss anti reflective film system（case1）：Reference coating material selectionZrO₂（Zirconia）+ MgF₂（Magnesium fluoride），Using electron beam evaporation+Ion assisted deposition（IAD）process preparation，Core technical parameters：Ion source current1-2A，Sedimentation rate0.05-0.15nm/s，coating thickness120-150nm（tolerance≤±1nm），Membrane loss≤0.1%，refractive index1.52-1.98，adhesion≥45N，Friction resistance times≥10000time（load200g），high and low temperature resistance（-55℃～+70℃）Cycle without cracking；core functionality：Reduce laser energy loss，Improve laser transmission efficiency and resonance stability，Reduce power fluctuations（≤±0.5%），Suitable for military laser guidance、Core precision components such as laser communication，Ensure stable transmission of laser signals。

（2） Infrared detector specific anti reflection+Passivation composite film system（case2）：Reference coating material selectionGeO₂（Germanium oxide）+ Al₂O₃（alumina），Preparation using electron beam evaporation process，Core technical parameters：Sedimentation rate0.1-0.2nm/s，coating thickness30-50nm（passivation layer10-20nm，Anti reflection layer20-30nm），refractive index1.48-2.10，8-14μmInfrared band transmittance≥97%，reflectance≤0.3%，Passivation layer breakdown voltage≥100V，noise voltage≤0.1mV；core functionality：anti-reflection、anti-pollution、Passivation protection，Reduce infrared signal attenuation，Reduce detector noise，Enhance detection sensitivity≥20%，Avoid water vapor、Detection failure caused by impurity contamination，Suitable for various military infrared detectors and precision components。

（3） High stability anti reflective protective film system specifically designed for gyroscope windows（case3）：Reference coating material selectionSiO₂（silica）+ ZrO₂（Zirconia），Using electron beam evaporation+Preparation of Magnetron Sputtering Composite Process，Core technical parameters：deposition temperature200-300℃，coating thickness80-100nm（tolerance≤±1nm），refractive index1.48-2.10，Transmittance≥98%，flatness≤0.0005mm，coefficient of thermal expansion≤5×10⁻⁷/℃，vibration-resistant（10-2000Hz）No detachment；core functionality：Reduce refraction errors of light rays，Improve gyroscope positioning accuracy（positioning error≤0.001°），Resist vibration、Film deformation caused by temperature difference，Ensure stable operation of gyroscope，Adapt to military guided gyroscope、Inertial navigation gyroscope precision window。

Weichuang Vacuum is deeply involved in the field of coating for military precision components，All membrane systems pass throughGJB 190-1986Military precision standard verification，Mass production dimensional accuracy deviation≤±0.001mm，Optical performance consistency deviation≤0.1%；The combination of high-purity coating materials and precision coating processes，Can effectively improve the stability and durability of precision components；Imported coating equipment（Electron beam evaporator、Magnetron sputtering machine）Maintenance Service，Can ensure the stability of mass production。Relying on precision membrane design and superhydrophilic protection technology，Weichuang vacuum assists military precision components“just right、stable and reliable”，Provide core support for the performance upgrade of national defense equipment。