Ecoptik provide the round, square and customized shape mirrors with a protected gold coating in various sizes. Protected gold is ideal for use in the IR wavelength range. The protective dielectric overcoat supplied by Ecoptik is layered over the gold to help protect it from damage and make cleaning easier. These optics provide >96% average reflectance from 800nm to 20μm.
The optical mirror coated with metal (Au, Al, or Ag) over coated with silicon monoxide(SiO2). Metallic coatings have low peak reflectance, mechanical durability and damage threshold, but they have extremely broadband and low cost. They are insensitivity to angle of incident light and polarization.
| Substrate | Fused silica/ Silica/ BK7 Glass |
| Dimension | 2mm~100mm |
| Clear aperture | >90% of dimension |
| Surface quality | 40/20, 20/10 Scratch-Dig |
| Surface Irregularity | λ/2~λ/10 @632.nm |
| Thickness | 1mm~20mm |
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