Digital Surfacing
Precise surface cutting using single point turning; cutting height is controlled at all points on the lens.
glossary
Precise surface cutting using single point turning; cutting height is controlled at all points on the lens.
Optical system with a focal distance of 1m. Refraction defects are measured in diopters (visual insufficiency). Unit of measurement for lens power. It is the reciprocal of the focal length in Meters.
A unit of power of a lens, the reciprocal of the focal length of the lens.