Proof
ISO/PRF 20351
Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for optical properties of ceramic phosphors for white light-emitting diodes using an integrating sphere
Reference number
ISO/PRF 20351
Edition 2
2024-10
© ISO 2024
Proof
Under development (Edition 2, 2024)
This draft is in the approval phase.
Will replace ISO 20351:2017

Abstract

This document describes test methods using an integrating sphere to measure the optical properties of ceramic phosphor powders, which are used in white light-emitting diodes (LEDs) and emit visible light when excited by UV or blue light. It specifies an absolute method to measure internal quantum efficiency and a substitution method to measure external quantum efficiency and absorptance. The substitution method uses reference materials whose external quantum efficiency and absorptance have been obtained in accordance with ISO 23946.

General information

  • Status
     : Under development
    Publication date
     : 2024-10
    Stage
    : Proof sent to secretariat or FDIS ballot initiated: 8 weeks [50.20]
  • Edition
     : 2
    Number of pages
     : 14
  • Technical Committee :
    ISO/TC 206
    ICS :
    81.060.30 
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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