Sport Optics

Structure and Optical Technologies

Lens coatings

Part of the light that passes through the lens is reflected by the front (incident light) and rear (exiting light) surfaces. This reduces the amount of light passing through the lens, so the image appears to be dark. Also, the reflected light may cause ghosting and flare, affecting image contrast. To minimize reflection on the lens surfaces and ensure clear, sharp images, anti-reflective coating is applied.

Coating is applied to both surfaces of the lens. There are two main types of coating: a single layer and multilayer (usually 3-5 layers). A multilayer coating effectively reduces reflected light that cannot be eliminated with a single-layer coating, and increases the transmittance of light.

No coating (Left)   Multilayer coating (Right)
Multilayer coating effectively reduces reflected light.


[Transmittance by type of coating]

Sport Optics Guide -Binoculars-


Basic Information about Binoculars


How to Choose Binoculars


How to Use Binoculars


Structure and Optical Technologies


Sport Optics Guide -Fieldscopes-