ISO WIDGET | AmeriCOM Learning Management

ISO 10110 Drawing Guide

Click the marked areas to learn the values technicians need for setup, manufacturing, inspection, metrology, and coating checks.

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Asphere Essentials

For an asphere drawing, technicians usually need the manufacturing-critical values, not every line of math broken apart.

Show these clearly: base radius of curvature R, conic constant K, aspheric variable coefficients, and a separate sag table.

Item	What it tells the technician
Base R	The starting sphere used by CNC programming and metrology setup.
Conic K	How the surface departs from a sphere: parabola, ellipse, hyperbola, or other conic behavior.
Aspheric coefficients	Higher-order terms used by the machine or metrology software to define the exact surface.
Sag table	Discrete radius/sag points used as a practical check when programming or inspecting the surface.

Blueprint item	Plain-language meaning
R	Radius of curvature. CV means concave, CX means convex, PL means plano/flat.
Øe	Effective aperture, also called clear aperture. This is the usable optical diameter.
3/	Surface form or power/irregularity callout. On these drawings it is shown as 3 (0,5) at λ=632.8 nm; technicians often discuss this in fringes.
4/	Centering/wedge callout. Values such as 3.82′ or 4.46′ are in arc minutes.
5/	Scratch-dig cosmetic surface quality, here 40-20 per MIL-PRF-13830B.
λ	Wavelength used for the specification.
G and P	G = surfaces to be a ground finish. P = surfaces to be polished.
Coating note numbers	Small numbered note markers on the drawing connect a written note, such as coating Note 1, to the surface or surfaces where that note applies.