What do the ISO 10110 code numbers mean?

0/ stress birefringence, 1/ bubbles and inclusions, 2/ inhomogeneity and striae (ISO 10110-18), 3/ surface form (ISO 10110-5), 4/ centring (ISO 10110-6), 5/ surface imperfections (ISO 10110-7), 6/ laser damage threshold (ISO 10110-17).

What do 00/ and 10/ mean?

A leading 0 applies a material requirement (0/, 1/, 2/) to the raw material; a leading 1 applies it to the finished assembly. 15/ is surface imperfections in an assembly.

ISO 10110 code numbers 0/ to 6/

Every tolerance on an ISO 10110 optical drawing starts with a code number and a slash. Codes 0/ to 2/ describe the material and go in the middle field of the drawing table; 3/ to 6/ describe a surface and go in that surface’s field.

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The codes

0/	Stress birefringence ISO 10110-18:2018 · e.g. `0/ 10`
1/	Bubbles and inclusions ISO 10110-18:2018 · e.g. `1/ 3x0.16`
2/	Inhomogeneity and striae ISO 10110-18:2018 · e.g. `2/ 1;3`
3/	Surface form tolerance ISO 10110-5 · e.g. `3/ 2(0.5); λ = 632.8 nm`
4/	Centring tolerance ISO 10110-6 · e.g. `4/ 3′`
5/	Surface imperfections ISO 10110-7:2017 · e.g. `5/ 3x0.16; L2x0.004; E0.5`
6/	Laser damage threshold ISO 10110-17:2004 · e.g. `6/ 25 J/cm2; 1064 nm; 20 ns`

Prefixes

00/ 01/ 02/ apply a material requirement to the raw material (the glass maker’s certificate is accepted as proof); 10/ 11/ 12/ to a finished assembly. 15/ is surface imperfections in an assembly. 13/ is used for wavefront deformation (ISO 10110-14) verify.

An unofficial summary written from public previews of the standards and reputable secondary sources. It does not reproduce the ISO text. Items marked verify could not be fully confirmed. Check against the current edition; see Sources & editions.