Optics and optical instruments. Lasers and laser-related equipment. Lifetime of lasers Ingestion-build-78747 even if the other heating

even if the other heating components of the appliance use electrical energy (e

including vertical gap

for printed board connectors

development of the colour

This document specifies the requirements for the construction and testing of flow restricting enclosures for non-electrical equipment intended for use in potentially explosive atmospheres if the atmosphere outside the enclosure becomes explosive rarely and for short durations only

Optics and optical instruments. Lasers and laser-related equipment. Lifetime of lasers Ingestion-build-78747 even if the other heating1 Scope This International Standard covers terms and definitions as well as test methods and evaluation procedures to characterize, estimate and predict the longterm behaviour of various types of lasers. This International Standard defines terms for the lifetime of lasers and specifies test procedures and fundamental aspects for the determination of lifetime. It applies for all types of lasers for which lifetime is a critical issue, including diode