Aktívna norma | Vydaná: 16.10.2024

ISO 20351:2024-ed.2.0

Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for optical properties of ceramic phosphors for white light-emitting diodes using an integrating sphere
(Titre manque)

Dostupné jazyky: Anglicky

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Podrobné informácie

Označenie: ISO 20351:2024-ed.2.0

Dátum vydania: 16.10.2024

Stránok: 14

Krajina: Medzinárodná technická norma

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Anotácia

Description / Abstract: This document specifies test methods for the use of 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. This document 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.

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