Metal Reflective Coating / Metal Reflector
Metal coatings are reflective films: aluminum is common in UV; aluminum/silver in visible; gold/silver/copper in IR; chromium/platinum in special films. Simple fabrication and broad wavelength coverage are advantages. Aluminum, silver and copper oxidize in air, so dielectric protection is needed and can further enhance reflectivity. Common protective materials include silicon monoxide, magnesium fluoride, silica and alumina. Protected silver gives excellent visible/NIR reflection above aluminum, with good cleanability/durability. Visible-enhanced aluminum gives higher visible reflectivity than ordinary aluminum and excellent abrasion resistance, with custom sizes/specifications. Custom UV-enhanced aluminum mirrors serve UV analytical/optical instruments, with high UV reflection and scratch resistance, especially better wiping resistance than ordinary UV aluminum. The supplier mass-produces and exports these quality products to Europe/US.
Overview
Specifications
| Parameter | Value |
|---|---|
| Material | H-K9, H-BAK7 and Other Optical Glasses |
| Operating Wavelength - Gold | >650nm |
| Operating Wavelength - Silver | >400nm |
| Operating Wavelength - Aluminum | >200nm |
| Reflectance - Gold R(ave) | R(ave)>97% |
| Reflectance - Silver R(ave) | R(ave)>94% |
| Reflectance - Aluminum R(ave) | R(ave)>90% |
| Angle of Incidence | 0 Degrees or According to Customer Requirements |
| Surface Finish | II-V |
| Clear Aperture Dimension | >90% External Dimensions |
Datasheet
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