ISO 19962:2019

Name: ISO 19962:2019 — Optics and photonics — Spectroscopic measurement methods for integrated scattering by plane parallel optical elements
SKU: ISO 19962:2019
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Optics and photonics — Spectroscopic measurement methods for integrated scattering by plane parallel optical elements

Название (английский):

ISO 19962:2019

Optics and photonics — Spectroscopic measurement methods for integrated scattering by plane parallel optical elements

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 20
Дата публикации:: 13 мая 2019 г.
Издание:: ISO IS 19962 edition 1 version 1
ICS:: 17.180.01

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Описание (английский):

This document specifies procedures for determining the spectroscopic forward scattering characteristics of coated and uncoated optical surfaces over a specified wavelength range between 350 nm and 850 nm using a double-beam spectrophotometer with an integrating sphere. This document is also applicable to the forward scattering properties at a single wavelength. This document is applicable to spectroscopic forward scattering measurements with collection angles larger than 2,7 degrees. ISO 13696 provides a measurement method for smaller collection angles.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 19962:2019 - "Optics and photonics - Spectroscopic measurement methods for integrated scattering by plane parallel optical elements" specifies a practical spectroscopic method to determine forward scattering of coated and uncoated plane‑parallel optics using a double‑beam spectrophotometer with an integrating sphere. The method covers spectral measurements from 350 nm to 850 nm, and is also applicable at a single wavelength. It applies to measurements with collection angles larger than 2.7°; for smaller collection angles see ISO 13696.

Key technical topics and requirements

Measurement principle: collection and integration of forward scattered radiation via an integrating sphere and detector assembly.

Instrumentation: use of a double‑beam spectrophotometer fitted with appropriate radiation source, optical system, integrating sphere, detector, baffles and light traps to minimize background (remaining scattering).

Measurement parameters: record minimum scattering collection angle (MCA), specimen transmittance, remaining scattering, and scattering with specimen; calculate forward scattering and mean forward scattering.

Operational procedures: specimen preparation and conditioning, specimen mounting, baseline and transmittance measurements, subtraction of remaining scattering, and calculation methods.

Performance and quality control: requirements for performance certification of the spectrophotometer, recommended remaining scattering target (preferably < 0.02 %), and an uncertainty budget to document measurement uncertainty.

Reporting: standardized test report elements to ensure traceability and comparability of results.

Annexes: informative examples, performance certification protocol, MCA influence analysis, and derivation of forward scattering formulae.

Practical applications and who uses this standard

ISO 19962:2019 is relevant to professionals and organizations involved in optical metrology and quality assurance:

Optical component manufacturers and coating houses - to quantify scattering from substrates and thin‑film coatings for product specifications and process control.

Metrology and test laboratories - to provide standardized spectroscopic forward scattering data for customers and compliance testing.

System designers and imaging engineers - to assess stray light and scattering impacts on optical system efficiency and image quality across the visible to near‑IR spectrum (350–850 nm).

R&D teams - to characterize wavelength‑dependent scattering linked to surface/interface roughness, contamination or defects.

Practical value: this cost‑effective method leverages commonly available spectrophotometers, enabling routine spectroscopic assessment of integrated forward scattering for production QA, failure analysis, and optical performance verification.

ISO 19962:2019

Abstract

Похожие стандарты

Overview

Key technical topics and requirements

Practical applications and who uses this standard

Related standards

Технические детали

BS EN ISO 13696:2022

Optics and photonics. Test method for total scattering by optical components.

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