Below are different types of coatings that can enhance feature:
Anti-Reflection Coating – clear thin film to be applied to reduce the surface reflection by light interference. AR Coating reduces ghost images from the backside surface with multi-layer coating 
(Approx. hundreds nm thick) by physical vapor deposition. Lequa-Dry is suited for dry coating (Vacuum deposition), reflectance (bottom value) being 0.5% or less with excellent cosmetics and thickness can be 0.5mm to 5mm.
Anti-Smudge Coating: Avoids the Dirt and Fingerprints with few nm to more than a dozen nm thick organic coatings available. Anti-Fingerprint (AFP) / Smudge advantages are easy smudge removal by coating AFP layer which does not affect optical properties of Lequa-Dry and over 100-degree water contact angle
Hard Coating: Protect the surface of combiner from the scratches with sub μm to more than a dozen μm organic coating by wet method. Spec. of hard coating are dependent on customer’s request and 
hardness (Pencil hardness). It is also dependent on molding shape; coating method should be select carefully. Parts are normally molded by polycarbonate material, but surface condition varies depends on the molding condition.
Half Mirror Coating: Reflectance: 30 to 40 % mirror coating, with high transparency and multi-layer coating (Approx. hundreds nm thick) by physical vapor deposition.
Transfer tinting technology: This provides good stability of color, easy color control by ink-jet printer, possible for less dyeable material, dot-less gradation possible (Transferred in vacuum without contact) and multi color gradation possible.
Process of Transfer tinting:
- Print out special paper by ink-jet printer.
- Transfer dye from paper to lens by TTM-2000.
- Imbibing dye on lens in oven
Droplet-Prevention Film for Face Guard Coating: As premise, film cutting or providing of headset can be arranged at your side so that you have flexibility for cutting shape. Material would be PET 100um.
For more information go to NIDEK COATING DIVISION
