These Optical Coatings are seen on a wide variety of lenses from common eyewear to scientific instrumentation like telescopes and microscopes. Incident photons can either be reflected by the medium, transmitted through the medium, or be absorbed by it. By reducing the amount of light lost due to reflectance, the efficiency of the optic increases.
The back glare from reflection is also a huge factor in image quality, especially in things like cameras. An AR Coating exploits destructive interference to achieve its desired effect. The index of refraction of the coating is chosen to be somewhere between air and glass (or the substrate material). Since both the inner and outer will exhibit reflection at a similar intensity, they destructively interfere with one another which achieves the desired effect.
AR Coatings are an affordable and effective way of ensuring your optical equipment is performing well. Intlvac's techniques have been iterated and perfected for over 20 years. In our pursuit of unprecedented materials science, we are proud to offer some of the best coatings available, fabricated with our own machines.
Intlvac can provide Anti-Reflection (AR) coatings for a diverse range of substrates and for the VIS, NIR, SWIR, and MWIR spectral regions. All of our coatings are non-radioactive. The links below provide examples.
1. NARROWBAND AR (V COATING)
This coating is usually used for a single wavelength or very narrow band, such as for a laser receiver. It can be coated on practically all optical materials. The spectrum in the graph is of a flat window coated using our reactive magnetron sputtering process with plasma assist (PARMS).
Adhesion, moderate abrasion, severe abrasion, humidity as per the following (where applicable): MIL-C-675, MIL-M-13508, MIL-M-14806, MIL-C-48497, MIL-F-48616, MIL-STD-810F