Next, the lens surface is polished to its final form.

A circular opening is created on the lens surface (capsule).

It is also possible to remove an eyepiece lens to make a direct observation of the objective lens surface.

The vertex of the lens surface is located on the local optical axis.

By convention, R denotes the first lens surface counted from the object.

Using the torn end of the tube, he carefully brushed the lens surface until it was dust-free and shiny.

But since the chamois gets rubbed across the lens surface, some preparation is necessary.

The transmission efficiency of a modern multicoated lens surface is about 99.7% or better.

Another technique incorporates internal rewetting agents to make the lens surface hydrophilic.

Each lens has an individual cornea, that is limited to the lens surface.