Photonics Dictionary: S

A method of polishing an aspheric surface by mechanically distorting the optic while polishing the surface to a perfect sphere. When the stress is released, the substrate assumes the desired aspheric...

The cutting of pitch tooling surfaces by an optical technician to permit polishing compounds to flow across the surface of the tool.

A defect on a polished optical surface whose length is many times its width. Block reek is a chainlike scratch formed in polishing. A runner cut is a curved scratch caused by grinding. A sleek is a...

A term used to describe a convex surface having too short a radius of curvature. To correct this condition, material is cut from the outer portion of the polishing tool.

A polishing scratch having no visible conchoidal breaking of the edges.

The name of the mixture of liquid and grinding or polishing compounds used in processing optical materials.

A loose term for a single polishing machine. In a lens factory it is the minimum unit of production.

A metal tool used to hold a number of lens blanks during grinding and polishing.

A polishing machine with a lens mounted on a wooden stick, allowing a very wide sweep. It is used to polish hemispherical or hyper-hemispherical surfaces.

The length of the oscillation of a grinding or polishing lap.