ISO 13837:2021 道路車両—安全グレージング材料—日射透過率の測定方法 | ページ 2

3.1 用語と定義

このドキュメントでは、次の用語と定義が適用されます。

ISO および IEC は、次のアドレスで標準化に使用する用語データベースを維持しています。

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, 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, 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 shall 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.

This second edition cancels and replaces the first edition (ISO 13837:2008), which has been technically revised.

The main changes compared to the previous edition are as follows:

• deletion of definitions of convention “A” and convention “B”;
• deletion of all texts and tables corresponding to air mass 1,0 global;
• revision of 3.1;
• addition of some symbol definitions for variables and parameters;
• addition of calculation methods for luminous transmittance [T_L], solar direct reflectance [R_e], solar direct absorbance [] and colorimetry;
• revision of calculation method for solar UV transmittance to calculate with air mass 1,5 global;
• addition of a new Table 1 for calculation of luminous transmittance [T_L], a new Table 2 for calculation of solar UV transmittance [], and a new Table 5 for calculation of colorimetry;
• revision of Table 3 (former Table 1) for calculation of solar UV transmittance [], Table 4 (former Table 2) for calculation of solar direct transmittance solar direct reflectance , and Table A.1 for explanation of the derivation process;
• revision of Annex A to list the source of values in the new solar weight tables and give out the derivation process of Table 3 as an example;
• deletion of Figure A.1 and Figure A.2;
• moving of texts of Annex B to 5.3.7 and revision of text structure;
• revision of Bibliography;
• editorial update.

Introduction

A review of existing standards and industry specifications and procedures reveals a lack of agreement with respect to the basis for defining and measuring the ultraviolet (UV), visible (VIS), infrared (IR) transmittance and colorimetry (L*, a*, b*) properties of glazing materials. To avoid the continued preparation and promulgation of conflicting standards by individual entities, there is an interest in the automotive and glazing industries to harmonize on a worldwide basis the test procedures and protocols used to assess the solar transmittance properties of glazing materials.

1 Scope

This document specifies test methods to determine the luminous, the direct and total solar transmittance, and the colorimetry of safety glazing materials for road vehicles.

This document applies to monolithic or laminated, clear or tinted samples of safety glazing materials. Essentially flat sections of glazing parts can be used in this test, as well as flat samples of the same materials.

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. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms, definitions and symbols

3.2 Symbols

Bibliography