Single or Multilayer AR Coatings
In addition to the aluminium front surface mirrors as described under Front Surface Mirrors (201) and Unbreakable Plastic Mirrors (217), TMF can offer many other metals for the generation of front and back surface reflectors. They include gold, silver, copper chrome and various nickel/chrome alloys.
The choice of reflector depends on several factors such as:-
- Operational wavelength band.
- Reflectivity.
- Environmental conditions.
Gold
An excellent I.R. reflector which can be used for both I.R. mirrors or thermal shielding. It can be applied to glass and most plastics with a suitable ‘keying’ layer precoat and a protective overcoat.
| Reflectivity: | >96% 700 - 2500nm |
| >98% 2500 - 12000nm |
Silver
Silver mirrors exhibit a good reflectivity over the visible and I.R. regions, but are not suitable for U.V. application. Long term oxidation can be a problem but with careful overcoating design the mirror can be made durable and cleanable.
| Reflectivity: | >96% 700 - 2500nm |
| >98% 2500 - 12000nm |
Chrome
A more robust coating than aluminium with a neutral reflectance.
| Reflectivity: | >95% 400 - 2500nm |
| >97% 2500 - 12000nm |
We can also deposit Cerium, Copper, Nickel Chrome alloys, Inconnel, Magnesium, Platinum, Palladium, Scandium, Tantalum, Titanium and Vanadium to name a few.
Please contact us for further details or if your requirements are not listed.
Download Specification in PDF format