ISO 14368-4:2020 PDF

Name: ISO 14368-4:2020 — Mineral and sapphire watch-glasses — Part 4: Anti-reflective treatment
SKU: ISO 14368-4:2020
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Mineral and sapphire watch-glasses — Part 4: Anti-reflective treatment

Название (английский):

ISO 14368-4:2020

Mineral and sapphire watch-glasses — Part 4: Anti-reflective treatment

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 21 августа 2020 г.
Издание:: ISO IS 14368 edition 1 version 1
ICS:: 39.040.10

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Описание (английский):

This document specifies the terms and definitions, the test methods and the evaluation of results of watch-glasses with anti-reflective treatments. The document is applicable to sapphire watch-glasses with anti-reflective treatments, and it can also be used as a reference for mineral watch-glasses with anti-reflective treatments.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 14368-4:2020 - "Mineral and sapphire watch‑glasses - Part 4: Anti‑reflective treatment" defines the terminology, test methods and evaluation criteria for anti‑reflective (AR) treatments applied to watch‑glasses. The standard is written primarily for sapphire watch‑glasses and may be used as a reference for mineral watch‑glasses. It clarifies how to measure optical performance and environmental durability so manufacturers and test laboratories can assess AR coatings consistently.

Key topics and technical requirements

Scope and purpose: Terms and definitions, separate standardized tests, and evaluation procedures for AR‑treated watch‑glasses. Tests are conducted on new samples and are generally not superimposed; test plans can be agreed between contracting parties.

Optical characterization:

Measurement of luminous transmittance and luminous reflectance using illuminant D65 and a 2° standard observer.
Digital integration parameters: spectral range typically 380–780 nm, step width ≤ 10 nm (truncation allowed where justified).
Use of spectrocolorimeter/spectrophotometer with integration sphere for Specular Component Included (SCI); geometry options (e.g., 0°:di, 8°:di) are specified and can be agreed between parties.
Colour reported in Lab* (or alternative CIE spaces).

Environmental and mechanical tests: standardized methods and result evaluation for:

Adhesive force
Humidity test
Thermal shock
Salt spray (corrosion)
Synthetic sweat
Abrasion resistance
Scratch resistance
Sunlight (UV/xenon) resistance
Cleaning test

Evaluation: Visual inspection and comparison with reference samples; appearance checks in accordance with ISO 14368‑3:2003 (Annex A). Acceptance criteria may be tightened by agreement.

Applications and who uses it

Watch manufacturers specifying AR coatings for sapphire or mineral watch‑glasses.

Coating suppliers and material engineers validating AR performance and durability.

Quality control and test laboratories performing optical, environmental and mechanical testing.

Design and procurement teams ensuring legibility, optical performance and long‑term resistance to wear, moisture, corrosion and sunlight.

Related standards and references

ISO 14368‑3:2003 (quality criteria and test methods for watch‑glasses)

ISO/CIE 11664 (colorimetry and illuminants), CIE 15, ISO 4892 (light exposure), ISO 9227 (salt spray)

ISO 3160‑2, ISO 23160 (related watch case and wear tests)

ISO 14368‑4:2020 provides a consistent, measurable framework for assessing AR treatments on watch‑glasses, supporting reproducible quality control and supplier specifications across the watch industry.

ISO 14368-4:2020 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses it

Related standards and references

Технические детали

ISO 14368-3:2003

Mineral and sapphire watch-glasses — Part 3: Qualitative criteria and test methods

ISO 4892-2:2013/Amd 1:2021

Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps — Amendment 1: Classific…

SIST EN ISO 9227:2023/A1:2024

Corrosion tests in artificial atmospheres - Salt spray tests - Amendment 1: Footnote of warning (ISO 9227:202…

ISO 3160-2:2003

Watch-cases and accessories — Gold alloy coverings — Part 2: Determination of fineness, thickness, corrosion…

BS ISO 23160:2011

Watch cases and accessories. Tests of the resistance to wear, scratching and impacts.