BS ISO 20711:2017 pdf download – Optics and photonics Environmental requirements – Test requirements for telescopic systems 1 Scope This document specifies requirements to be met with regard to resistance of the optical , mechanical , chemical and electrical properties or performance data of instruments to environmental influences and hence determines geograp hi cal and technical areas of appl i cat ion. It applies to consumer telescopic systems and accessor ies , such as hunting and sporting products. Environmental test methods as specified in relevant parts of I SO 9022 are assigned to the various areas of application for the purpose of ascertaining the suitability of the instruments in their respective area of application. This document is the basis for the specification of environmental requirements and environmental tests in instrument standards. If necessary , these requirements and tests can be amended in the instrument standards . This document does not deal with the requirements to be met by the packaging of the instrument during transport from the manufacturer to the user. NOTE Nominal values of properties and performance characteristi cs as understood by this document are predetermined by specifications provided by the manufacturer , technical terms of delivery and instrument standards. 2 Normative references The following documents are referred to in the text in such a way that some or a ll 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 (i ncluding any amendments) applies. ISO 9022 -1 , Optics and photonics – Environmenta/ test methods – Part 1: Definitions , extent of testing ISO 9022-2 , Optics photonics – test methods – 2: Cold , heat and humídíty ISO 9022-3 , Optics and photonics – Environmental test methods – 3: Mechanical stress ISO 9022-4 , photonics – Environmenta/ test methods – Part 4: Sa/t mist ISO 9022-7 , Optics and photonics – Envíronmental test methods – to dríp or rain ISO 9022 -8 , Optics and photonics – Environmenta/ test methods – Part 8: High interna/ pressure , /ow pressure , immersion ISO 9022-9 , Optics and photonics – Environmenta/ test methods – Part 9: So/ar radiation and weathering ISO 9022-12 , Optícs photonics – Envíronmental test methods – 12: Contamination ISO 10109 , Optics and photonics – Guidance for the selection of environmental tests ISO 14133-1 , Optics...

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