Case Study: 1250 – 2300 nm AR 2 Side B270 Glass
Data Table |
|
Specification |
Value |
Anti Reflection Range |
1250 – 2300 nm |
Reflection % |
R < 1.5% Per Surface |
Transmission Range |
1250- 2300 nm |
Transmission % |
T% >97% Abs |
No. Sides Coated |
2 Sides |
Substrate |
B270 Window |
Dimensions |
30 mm Dia |
Thickness |
1.1 mm |
Scratch/Dig |
60/40 |
Quantity Per Year |
1000 |

Case Study: Highly Durable Sputtered Anti-Reflection Coatings for Tough Environments
Customer Challenge: The end use for these lenses was as a protective lens on an environmental monitoring device. This device would be exposed to the elements 365 days a year, so the coating had to be highly durable in a range of conditions.
Vortex’s Solution: At vortex all of our anti-reflection coatings are deposited using our advanced sputtering technology to produce robust and long-lasting optical coatings that will stand the test of time in the toughest of environments. Unlike traditional evaporation methods which are often used for anti-reflection coatings, sputtering deposits coatings with a much higher energy (up to 4 times higher), resulting in superior adhesion and durability.
Once the coating was complete the following rigorous testing was completed:
- Abrasion and Severe Abrasion: Simulating harsh physical wear to ensure the coatings could withstand rough handling and abrasive conditions.
- Humidity: Exposing the filters to high humidity environments for 24 hours to test their resistance to moisture-induced degradation.
- Water Immersion: Submerging the filters in water for 24 hours to verify their durability and performance under prolonged water exposure.
The Result: We were able to deliver the specified coating, exceeding the specified minimum transmission levels as well as meeting all of the environmental specifications relating to MIL-F-48616. All parts passed the environmental tests and accompanying documentation was delivered alongside the parts.