ISO 10110-18-2018 PDF

Full title and description

ISO 10110-18:2018 — Optics and photonics — Preparation of drawings for optical elements and systems — Part 18: Stress birefringence, bubbles and inclusions, homogeneity, and striae. This part of the ISO 10110 series establishes symbols, indications and tolerance notation to be used on engineering drawings to specify acceptable levels of stress birefringence, bubbles and inclusions, material homogeneity, and striae in optical materials and finished optical elements or systems.

Abstract

This standard specifies how to indicate tolerances for four categories of material imperfections in optical components and raw optical materials — stress birefringence, bubbles and inclusions, homogeneity, and striae — on technical drawings. The tolerancing rules apply to finished optical parts, finished systems of optical parts, or to the raw material used to manufacture optical parts, enabling consistent specification and communication between designers, manufacturers and quality inspectors.

General information

• Status: Published; ISO edition confirmed (stage 90.93) and re-confirmed in the periodic review cycle.
• Publication date: December 2018 (ISO publication date: 2018-12; national adoptions published late 2018 / 2019).
• Publisher: International Organization for Standardization (ISO); available through national standards bodies (e.g., BSI, ANSI, DIN).
• ICS / categories: 37.020 (Optical equipment), 01.100.20 (Mechanical engineering drawings).
• Edition / version: Edition 1, ISO 10110-18:2018.
• Number of pages: ISO published edition listed as 22 pages (national publications may show different page counts: e.g., some national/adapted publications list 22–32 pages depending on national forewords/cover material).

Scope

ISO 10110-18:2018 standardizes the graphical indications and tolerance notation used on drawings to define acceptable levels of: 1) stress-induced birefringence in optical glass and other transparent materials; 2) bubbles and inclusions (size, quantity and location criteria); 3) bulk material homogeneity (refractive index variations); and 4) striae (visible streaks and internal flow lines). It applies to finished optical parts, assemblies of optical parts, and to raw materials supplied for optical manufacture. The standard does not prescribe specific acceptance criteria for every application but provides the notation and measurement descriptors to allow designers and manufacturers to specify and document their chosen acceptance levels.

Key topics and requirements

• Standardized symbols and drawing indications for stress birefringence measurement reporting and tolerance specification.
• Notation for bubbles and inclusions: classification by size, count and permitted location on optical elements.
• Methods for indicating bulk homogeneity tolerances (refractive index variation limits and where they apply in the part).
• Definitions and notation for striae (appearance, orientation and allowed severity on drawings).
• Guidance on applying tolerances to finished parts, assemblies, or raw material specifications to ensure consistent procurement and inspection.

Typical use and users

Used by optical engineers, lens designers, drawing/technical drafters, procurement specialists, quality engineers, and manufacturers of precision optics and optical components (lenses, prisms, windows, substrates). Typical uses include specifying material acceptance on purchase orders, defining inspection limits, communicating tolerances between designers and vendors, and documenting acceptance criteria in inspection reports. Industry sectors include scientific instrumentation, aerospace, defense, medical devices, imaging systems, and any application requiring controlled optical material quality.

Related standards

ISO 10110 is a multipart series covering drawing indications for optical elements and systems. Parts 2, 3 and 4 (which addressed various material imperfections) were superseded by and consolidated into Part 18; earlier withdrawn parts include ISO 10110-2:1996, ISO 10110-3:1996 and ISO 10110-4:1997. Other parts of ISO 10110 cover surface form, surface texture, tolerancing, coatings, and centration; users often apply multiple ISO 10110 parts together when producing complete optical drawings.

Keywords

Optics; photonics; drawing indications; stress birefringence; bubbles; inclusions; homogeneity; striae; tolerances; optical materials; ISO 10110.

FAQ

Q: What is this standard?

A: ISO 10110-18:2018 is part of the ISO 10110 series and provides standardized drawing indications and tolerance notation relating to stress birefringence, bubbles and inclusions, material homogeneity, and striae in optical materials and finished optical elements or systems.

Q: What does it cover?

A: It covers the symbols, notation and tolerancing conventions to specify acceptable levels of the four listed categories of material imperfections on engineering drawings, and explains how those tolerances apply to finished parts, assemblies, or raw materials. It does not mandate numeric acceptance limits for all applications but gives the means to document chosen limits unambiguously.

Q: Who typically uses it?

A: Optical designers, mechanical drafters working on optical assemblies, procurement and quality engineers, optics manufacturers, and inspectors who need a common language for specifying and verifying bulk material quality and internal imperfections.

Q: Is it current or superseded?

A: ISO 10110-18:2018 is the first edition published in December 2018 and has been confirmed in the ISO five‑year review cycle (status shown as confirmed). Earlier related ISO 10110 parts addressing material imperfections were withdrawn and consolidated into this part. National adopters (for example BSI, ANSI, DIN) offer identical or adapted national versions.

Q: Is it part of a series?

A: Yes — it is Part 18 of the ISO 10110 series (Preparation of drawings for optical elements and systems). The series contains many parts covering surface form, surface texture, coatings, centration, material imperfections and other drawing indications used in optics.

Q: What are the key keywords?

A: Stress birefringence, bubbles, inclusions, homogeneity, striae, optical drawing indications, tolerances, ISO 10110.