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ISO TC 172, Optics and Optical Instruments, writes and maintains the majority of standards for specifying optical components. 3 ISO system for specifying optical components However, the unique aspects of optical components require additional standards to accurately describe the part to be made. As a mechanical part, an optical component can be described to some extent under the standards listed above. This tutorial assumes that the reader is familiar with basic GD&T/GPS practices, so we can focus on the unique practices associated with describing optical components. It would be a good idea for the designer to verify what revision of standard the fabricator uses when submitting drawing packages to avoid any possible misinterpretations. GD&T standards for data exchange and integration are governed by ISO 10303. Under the ISO system, geometrical product specifications (GPS) are governed by the Technical Committee (TC) 213 and include ISO 286-1 and -2:2010, ISO 1101:2012, ISO 5458:1998, ISO 5459:2011, and many other standards. In the United States, the use of ANSI Y14.5-2009 is almost universal, although many machine shops may still rely on ANSI Y14.5M-1994 because the current version is relatively new. GD&T was devised as a method to explicitly describe nominal geometry and allowed variation for use in engineering drawings. ISO 10110 fundamentally relies on the principles of GD&T to describe a mechanical part. The goal of this tutorial is to fulfill this role as an aid to the designer or the drafter in adequately and correctly completing an ISO 10110 drawing. In particular, a guide is written for designers who may want to use ISO 10110 but are unsure of where to begin or for anybody who may need a lens fabricated but is not necessarily familiar with the details of optical fabrication. The real problem seems to be the lack of a ‘simple, practical’ guide for generating an ISO drawing. This is not particularly the designer’s fault.
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In talking to vendors and fellow designers about the issue, it became obvious to me that most errors arise from a designer’s or a design team’s unfamiliarity with the standard and how to implement it.
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Although the ISO 10110 optical drawing standard has begun to see widespread use in the optical industry, an optical shop will often receive an ISO 10110 drawing that is incomplete or incorrectly implemented. The ISO 10110 standard is an optical drawing standard used to explicitly describe an optical part based on the principle of geometric dimensioning and tolerancing (GD&T). Keywords: ISO 10110 guide ISO 10110 tutorial lens drawings lens specifications optical drawings 1 Introduction