Every optical surface will experience certain amount of light reflection due to the index difference in comparison with the medium. These unwanted reflections can create ghost images and deteriorate the image quality. Thin film coating consists of single or multilayers will be used to reduce the reflection. Anti reflection coating will be used in  Laser scanner windows, Reflex free sight glasses, Low reflection camera windows, Contrast enhancement, Anti glare coated instrument windows and in microelectronic photo lithography to reduce image (substrate) distortions.

 

Customized anti reflection coating can be designed to meet the reflection requirements over the desired wavelength band on different substrates like BK7, UVFS, Germanium, Silicon, Zinc sulphide.. etc

 

Visible AR coating

Wavelength Region (nm) Reflection (%) Durability
400 – 700
Avg < 1%
Mil-C-48497A

High efficiency AR coating

Wavelength Region (nm) Reflection (%) Durability
425 – 675
Avg < 0.5%
Mil-C-48497A

Broad Band AR coating

Wavelength Region (nm) Reflection (%) Durability
400 – 1000
Avg < 1%
Mil-C-48497A

AR coating in infrared wavelength region

Substrate Wavelength Region (nm) Reflection (%) Durability
Germanium, Silicon, Zinc sulphide
3000 – 5000
Avg < 1%
Mil-C-48497A
Germanium, Zinc Sulphide
8000 – 12000
Avg < 1%
Mil-C-48497A