ISO 25297-1:2012
Optics and photonics - Electronic exchange of optical data - Part 1: NODIF information model

Standard No.

ISO 25297-1:2012

Release Date

2012

Published By

International Organization for Standardization (ISO)

Latest

ISO 25297-1:2012

Scope

This part of ISO 25297 specifies the information requirements for optical systems and parts, and provides an information model to support the processes of optical design, optical evaluation and analysis for these optical systems and parts when using computers with CAD and CAE. NOTE Generally, an optical system means an optical unit as an optical product, which performs optical functions, and is composed of optical elements and the barrels in which these elements are mounted. In this part of ISO 25297, an optical system is a collection of optical parts and optical assemblies, e.g. the viewfinder system or the taking lens system of a leaf shutter camera. This information model adds the data peculiar to optical design specification based on STEP to ISO 10303 (all parts). The additional information is product specification information, optical design information, optical evaluation information and analysis information. This part of ISO 25297 is generically called the Neutral Optical Data Interchange Format (NODIF). The following are within the scope: — information on product specification, optical design, optical evaluation and analysis; — optical systems and parts in imaging systems, such as cameras and copiers, viewing systems for telescopes and microscopes and the other optical systems, such as projectors and pick-up lenses; — multiple-configuration optical systems, including zoom lenses and inner focusing systems; — optical path definition, including ray-path sequence and optical surface arrangement; — optical assemblies, including cemented parts and dynamic parts; — mathematical description of the optical surface form; — description of diffractive surfaces; — machining process designation, such as polishing, moulding or replicating; — optical material specifications, such as material names, lot numbers and measured refractive indices; — optical tolerances for the shape and material property of each optical part; — assembly tolerances, such as separation, parallelism, displacement and tilt; — effective diameters, coatings and protective surface treatment; — paraxial evaluation, such as focal length, back focal length, principal points and f-number; — ray-tracing evaluation, such as geometrical ray-tracing results (i.e. ray directions and intersection points on each surface and optical path lengths), aberrations and wavefront aberration; — OTF evaluation based on geometrical and/or physical optics; — illuminance distribution on a detection surface or a projection surface; — spectral characteristics;  1 — ghost image evaluation; — thermal analysis accompanying optical surface deformation and material property value change; — stress analysis accompanying optical surface deformation and material property value change; — veiling glare and surface imperfections. The following are outside the scope of this part of ISO 25297: — mechanical design, electronic design and embedded software design; — optical systems in which the optical path is changeable, e.g. beam splitters or variable magnification converters; — tolerances for mechanical parts; — parts with a diameter less than 10 times the wavelength of light; — parts made from materials whose dielectric constant, σ, electric permittivity, ε, and magnetic permittivity, µ, are uninfluenced by interaction between the materials and the light; — graphical documents resulting from design, evaluation and analysis of products; — optical wave guide for optical communications; — product planning information concerning market research and customer analysis; — product definition and configuration control information irrelevant to design, evaluation and analysis; — analysis information, except thermal and stress analysis, e.g. vibration analysis; — information on trial production, production process including production planning and production control, and processes after production, such as shipment and repair; — ophthalmic optics.

ISO 25297-1:2012 Referenced Document

• ISO 10110-1 Optics and photonics — Preparation of drawings for optical elements and systems — Part 1: General*， 2019-10-10 Update
• ISO 10110-12:2007 Optics and photonics - Preparation of drawings for optical elements and systems - Part 12: Aspheric surfaces
• ISO 10110-17:2004 Optics and photonics - Preparation of drawings for optical elements and systems - Part 17: Laser irradiation damage threshold
• ISO 10110-2:1996 Optics and optical instruments - Preparation of drawings for optical elements and systems - Part 2: Material imperfections - Stress birefringence
• ISO 10110-3:1996 Optics and optical instruments - Preparation of drawings for optical elements and systems - Part 3: Material imperfections - Bubbles and inclusions
• ISO 10110-4:1997 Optics and optical instruments - Preparation of drawings for optical elements and systems - Part 4: Material imperfections - Inhomogeneity and striae
• ISO 10110-5:2007 Optics and photonics - Preparation of drawings for optical elements and systems - Part 5: Surface form tolerances
• ISO 10110-6:1996 Optics and optical instruments - Preparation of drawings for optical elements and systems - Part 6: Centring tolerances
• ISO 10110-7:2008 Optics and photonics - Preparation of drawings for optical elements and systems - Part 7: Surface imperfection tolerances
• ISO 10110-8 Optics and photonics — Preparation of drawings for optical elements and systems — Part 8: Surface texture*， 2019-11-15 Update
• ISO 10303-1:1994 Industrial automation systems and integration - Product data representation and exchange - Part 1: Overview and fundamental principles
• ISO 23584-2 Optics and photonics - Specification of reference dictionary - Part 2: Classes' and properties' definitions*， 2012-08-01 Update
• ISO 25297-2 Optics and photonics - Electronic exchange of optical data - Part 2: Mapping to the classes and properties defined in ISO 23584

ISO 25297-1:2012 history

• 2012 ISO 25297-1:2012 Optics and photonics - Electronic exchange of optical data - Part 1: NODIF information model
• 2010 ISO 25297-1:2010 Optics and photonics - Electronic exchange of optical data - Part 1: NODIF information model