ISO INTERNATIONAL STANDARD 20711 First edition 2017-05 Optics and photonics Environmental requirements Test requirements for telescopic systems Optique et photonique-Prescriptions d'environnement- Prescriptions d'essaipour les systemes telescopiques Referencenumber IS020711:2017(E) iso Intemational Organization for Standardization @IS02017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 ted without license from IHS IS020711:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,Published inSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8. CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 [email protected] www.iso.org Intemationaibr PrganizationforStandardization Uicensee-ZHEJIANG INST OF STANDARDIZoISQ 3q,7 -All rights reserved networking permited without license from IHS Notfor Resale, 2017/8/21 02:17:26 IS020711:2017(E) Contents Page Foreword ..iv Introduction. 1 Scope.. 2 Normative references 3 Termsanddefinitions ..2 4 Subdivision of the instrument group"telescopic systems" 5 Designationofenvironmentalrequirements and environmentaltests ..3 6 Specification oftechnical requirements and appropriate environmental tests .3 6.1 Accelerationoffreefall .3 6.2 Binoculars, monoculars and spotting scopes (instrument types 01 and o2) .3 6.3 Telescopic sights (instrument type 03, 04 and 05) .6 6.4 Astronomical telescopes (instrument type 06 and 07) .8 7 Procedure 9 iii 2e=ZHEJIANG INSTOFSTANDARDIZATION C15956617 houtlicense from IHS