Road vehicles - Anti-fog coating for exterior lighting devices - Specification

This document specifies test methods and requirements for anti-fog coating of the exterior lighting devices of road vehicles.

Véhicules routiers — Revêtement antibuée pour dispositifs d'éclairage extérieurs — Spécification

General Information

Status
Published
Publication Date
07-Apr-2022
Current Stage
9093 - International Standard confirmed
Start Date
03-Sep-2025
Completion Date
13-Dec-2025

Overview

ISO/TS 5385:2022 - Road vehicles: Anti-fog coating for exterior lighting devices - Specification - defines standardized test methods and requirements for anti‑fog coatings applied to the outer lenses of vehicle exterior lighting (glass, polycarbonate, PMMA or other materials). The Technical Specification helps manufacturers and test laboratories evaluate anti‑fog performance, durability and coating integrity under controlled laboratory and environmental exposures.

Key Topics and Requirements

The document describes specimen preparation, visual assessment and a suite of quantitative and qualitative tests:

  • General conditions

    • Standard laboratory environment: (23 ± 5) °C and (50 ± 10) % RH.
    • Specimens preconditioned at least 24 h; minimum 3 specimens per measurement.
    • Test specimens: plates or outer lenses with wall thickness 2–4 mm and coatings free from visible flaws.
  • Coating thickness

    • Method A: optical interference using manufacturer refractive index.
    • Method B: cross‑section mean (ISO 2808) as alternative.
    • Thickness must meet manufacturer recommended values at all measured points.
  • Adhesion

    • Per ISO 2409 cross‑cut procedure with pressure‑sensitive tape (≥ 4.5 N/cm peel strength).
    • Adhesion classification: Grade 1 maximum.
  • Anti‑fog performance

    • Steam test (Method A & B): controlled steam exposure (e.g., 80 ± 2 °C water bath / 20 ± 1 s exposure; Method B at 40 ± 2 °C) with visual classification of water film. Method A accepts Class 1 or 2; Method B requires Class 1.
    • Cyclic steam test: repeated steam cycles to assess long‑term durability until failure.
  • Environmental durability

    • High/low temperature tests, condensation water tests, environmental cycle tests, accelerated weathering (xenon‑arc per ISO 4892‑2) and outdoor exposure. Visual assessments follow ISO 13076 lighting/procedure.

Applications and Who Uses It

ISO/TS 5385:2022 is intended for:

  • Automotive OEMs and tier‑1 lighting suppliers verifying exterior lamp performance.
  • Coating formulators and manufacturers developing anti‑fog treatments.
  • Independent testing laboratories and quality assurance teams performing type approval, R&D validation and production quality control.
  • Regulatory bodies or procurement teams specifying performance criteria for lighting assemblies.

Practical uses include product development, batch acceptance testing, durability benchmarking and documenting compliance with industry best practices for anti‑fog performance.

Related Standards

  • ISO 2409 - Paints and varnishes - Cross‑cut test (adhesion)
  • ISO 4892‑2 - Plastics - Exposure to xenon‑arc lamps (accelerated weathering)
  • ISO 13076 - Visual assessments of coatings

Keywords: ISO/TS 5385:2022, anti‑fog coating, exterior lighting devices, road vehicles, steam test, adhesion test, coating thickness, accelerated weathering, automotive lighting testing.

Technical specification

ISO/TS 5385:2022 - Road vehicles — Anti-fog coating for exterior lighting devices — Specification Released:4/8/2022

English language
9 pages
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Frequently Asked Questions

ISO/TS 5385:2022 is a technical specification published by the International Organization for Standardization (ISO). Its full title is "Road vehicles - Anti-fog coating for exterior lighting devices - Specification". This standard covers: This document specifies test methods and requirements for anti-fog coating of the exterior lighting devices of road vehicles.

This document specifies test methods and requirements for anti-fog coating of the exterior lighting devices of road vehicles.

ISO/TS 5385:2022 is classified under the following ICS (International Classification for Standards) categories: 43.040.20 - Lighting, signalling and warning devices. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase ISO/TS 5385:2022 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.

Standards Content (Sample)


TECHNICAL ISO/TS
SPECIFICATION 5385
First edition
2022-04
Road vehicles — Anti-fog coating
for exterior lighting devices —
Specification
Véhicules routiers — Revêtement antibuée pour dispositifs d'éclairage
extérieurs — Spécification
Reference number
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 1
4.1 Test condition . 1
4.2 Test specimens. 1
4.3 Examination . 2
5 Specifications . 2
5.1 Coating thickness . 2
5.1.1 Procedure . 2
5.1.2 Requirement . 2
5.2 Adhesion test . 2
5.2.1 Procedure . 2
5.2.2 Evaluation . . 2
5.3 Steam test . 3
5.3.1 Method A . . . 3
5.3.2 Method B . . 4
5.4 Cyclic steam test . 5
5.4.1 Procedure . 5
5.4.2 Evaluation . 5
5.5 High temperature test . . . 5
5.5.1 Procedure . 5
5.5.2 Apparatus . 5
5.5.3 Evaluation . . 5
5.6 Low temperature test . 5
5.6.1 Procedure . 5
5.6.2 Apparatus . 5
5.6.3 Evaluation . . 5
5.7 Condensation water test . 6
5.7.1 Procedure . 6
5.7.2 Evaluation . . 6
5.8 Environmental cycle test . 6
5.8.1 Procedure . 6
5.8.2 Apparatus . 7
5.8.3 Evaluation . 7
5.9 Accelerated weathering . 7
5.9.1 Preparation . 7
5.9.2 Procedure . 8
5.9.3 Evaluation . 8
5.10 Outdoor exposure test . 8
Bibliography . 9
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO should not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22 Road Vehicles, Subcommittee SC 35
Lighting and Visibility.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
TECHNICAL SPECIFICATION ISO/TS 5385:2022(E)
Road vehicles — Anti-fog coating for exterior lighting
devices — Specification
1 Scope
This document specifies test methods and requirements for anti-fog coating of the exterior lighting
devices of road vehicles.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. The following referenced documents are indispensable
for the application of this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 2409, Paints and varnishes — Cross-cut test
ISO 4892-2, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
ISO 13076, Paints and varnishes — Lighting and procedure for visual assessments of coatings
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// w
...

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