Similar to the relationship between aspheric and spheric surfaces, with atoric and toric surfaces the arc that is rotated in creation of the torus can deviate from a circle with the introduction of a conic constant or aspheric coefficients, allowing the designer greater freedom in creating optical surfaces.
|Dia. Tolerance [mm]||±0.1||±0.02|
|Irregularity (RMS) [nm]||100||50|
|CT. Tolerance [mm]||±0.1||±0.03|
|Surface Roughness Rq [nm]||<7.5nm||<7.5nm|