Metal-Coated Mirrors
Aluminum-coated mirrors: UV-enhanced aluminum mirrors use a magnesium-fluoride protective layer over aluminum to resist scratching and oxidation and improveUVreflectance,with reflectance above90%over250–450nm. Enhanced aluminum mirrors use an outer silicon-dioxide protective film to protect the soft aluminum coating against oxidation and scratching. Average reflectance exceeds90%over450–2000nm and95%over2–20μm. Gold-coated mirrors: front-surface gold mirrors use a silicon-dioxide protective coating over the soft gold film for scratch and moisture protection,with reflectance above96%over0.75–20μm. Rear-surface gold reflecting films use a chromium protective layer on gold; light passes through glass before reaching the gold reflector. They suit applications with less demanding spot requirements and provide reflectance above96%over0.75–20μm.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Coating Process | Gold Coating,Silver Coating,Aluminum with Dielectric Overcoat |
| Average Reflectance [420–680nm] | >94% |
| Enhanced Single-Band Reflectance [450nm,532nm,650nm,780nm] | >97% |
| Substrate Material | Optical-Grade Glass,Microcrystalline Material,Aluminum |
| Surface Finish | 40-20 |
| Environmental Tests | High/Low-Temperature Tests,Smoke Test,Adhesion Test |
| UV-Enhanced Aluminum Reflectance [UV-Enhanced Aluminum with MgF2Protection;250–450nm] | >90% |
| Enhanced Aluminum Average Reflectance [Enhanced Aluminum with SiO2Protection;450–2000nm] | >90% |
| Enhanced Aluminum Average Reflectance [Enhanced Aluminum with SiO2Protection;2–20um] | Greater than95% |
| Front-Surface Gold-Mirror Reflectance [SiO2-Protected Gold;0.75–20um] | >96% |
| Rear-Surface Gold-Film Reflectance [Chromium-Protected Gold;Through-Glass Incidence;0.75–20um] | >96% |
Datasheet
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