ISO 19741:2018 PDF

Optics and photonics — Optical materials and components — Test method for striae in infrared optical materials

Open preview (PDF)

Title (English):

ISO 19741:2018

Optics and photonics — Optical materials and components — Test method for striae in infrared optical materials

Document status:: Withdrawn
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: May 8, 2018
Edition:: ISO IS 19741 edition 1 version 1
ICS:: 37.020

Delivery type:

Full version25 €Read online 24h10 €Read online 72h15 €

Document language:

enru

Delivery time:Immediate download

Price:25 €

Description (English):

This document specifies the principle, apparatus, condition, sample, procedure and data processing of measuring striae in infrared optical materials. It is applicable to the determination of striae in infrared optical materials, such as infrared optical glass, which is opaque to visible wavelengths and whose transmission optical spectra are beyond 0,78 µm.

Technical details

Technical committee: ISO/TC 172/SC 3 - Optical materials and components
SKU: ISO 19741:2018

Abstract

Overview - ISO 19741:2018 (striae in infrared optical materials)

ISO 19741:2018 establishes a standardized test method for detecting and quantifying striae (localized refractive-index deviations) in infrared optical materials. It applies to materials such as infrared optical glass that are opaque in the visible and transmit beyond 0.78 µm. The standard defines the principle, apparatus, environmental conditions, sample requirements, measurement procedures (projection and Schlieren), data processing and reporting needed for consistent, reproducible striae assessment.

Key topics and technical requirements

Principle: Illuminate a sample with collimated infrared radiation and image refractive-index disturbances using either a projection (beam-contracting telescope) or Schlieren measurement (knife edge + camera) system.
Apparatus: Collimating IR light source, sample stage, projection optical system (lens 1, lens 2, knife edge/diaphragm), infrared image sensor and computer image-processing/display system.
Light and sensor:
- Emission spectrum must cover the sample’s transmission band.
- Light intensity non-uniformity ≤ 5%.
- Image sensor working spectrum within sample transmission; spatial resolution ≤ 0.25 mm.
Environmental conditions:
- Temperature: stable between 15 °C and 35 °C (±2 °C tolerance).
- Relative humidity: **

Related standards

Other ISO standards

Overview - ISO 19741:2018 (striae in infrared optical materials)

Key topics and technical requirements

Principle: Illuminate a sample with collimated infrared radiation and image refractive-index disturbances using either a projection (beam-contracting telescope) or Schlieren measurement (knife edge + camera) system.
Apparatus: Collimating IR light source, sample stage, projection optical system (lens 1, lens 2, knife edge/diaphragm), infrared image sensor and computer image-processing/display system.
Light and sensor:
- Emission spectrum must cover the sample’s transmission band.
- Light intensity non-uniformity ≤ 5%.
- Image sensor working spectrum within sample transmission; spatial resolution ≤ 0.25 mm.
Environmental conditions:
- Temperature: stable between 15 °C and 35 °C (±2 °C tolerance).
- Relative humidity: **

ISO 19741:2018 PDF

Technical details

Abstract

Overview - ISO 19741:2018 (striae in infrared optical materials)

Key topics and technical requirements

Related standards

Abstract

Overview - ISO 19741:2018 (striae in infrared optical materials)

Key topics and technical requirements

Related standards

Systems and software engineering — Software life cycle processes

Asset management — Vocabulary, overview and principles

Asset management — Asset management system — Requirements

Information technology — Radio frequency identification device conformance test methods — Part 2: Test method…

Information technology — Multimedia framework (MPEG-21) — Part 22: User Description

Milk — Determination of the lactoperoxidase activity — Photometric method (Reference method)

Carbonaceous materials for the production of aluminium — Cold and tepid ramming pastes — Expansion/shrinkage…

Agricultural machinery — Safety — Part 13: Large rotary mowers