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Optik og optiske instrumenter Medicinske endoskoper og endoskopitilbehør Del 5: Bestemmelse af optisk opløsning af stive endoskoper med optik - PDF
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Emma Inger Christoffersen
1 Dansk standard DS/ISO : udgave Optik og optiske instrumenter Medicinske endoskoper og endoskopitilbehør Del 5: Bestemmelse af optisk opløsning af stive endoskoper med optik Optics and photonics Medical endoscopes and endotherapy devices Part 5: Determination of optical resolution of rigid endoscopes with optics
2 DS/ISO :2005 København DS projekt: M ICS: ; Første del af denne publikations betegnelse er: DS/ISO, hvilket betyder, at det er en international standard, der har status som dansk standard Denne publikations overensstemmelse er: IDT med: ISO :2005. DS-publikationen er på engelsk. DS-publikationstyper Dansk Standard udgiver forskellige publikationstyper. Typen på denne publikation fremgår af forsiden. Der kan være tale om: Dansk standard standard, der er udarbejdet på nationalt niveau, eller som er baseret på et andet lands nationale standard, eller standard, der er udarbejdet på internationalt og/eller europæisk niveau, og som har fået status som dansk standard DS-information publikation, der er udarbejdet på nationalt niveau, og som ikke har opnået status som standard, eller publikation, der er udarbejdet på internationalt og/eller europæisk niveau, og som ikke har fået status som standard, fx en teknisk rapport, eller europæisk præstandard DS-håndbog samling af standarder, eventuelt suppleret med informativt materiale DS-hæfte publikation med informativt materiale Til disse publikationstyper kan endvidere udgives tillæg og rettelsesblade DS-publikationsform Publikationstyperne udgives i forskellig form som henholdsvis fuldtekstpublikation (publikationen er trykt i sin helhed) godkendelsesblad (publikationen leveres i kopi med et trykt DS-omslag) elektronisk (publikationen leveres på et elektronisk medie) DS-betegnelse Alle DS-publikationers betegnelse begynder med DS efterfulgt af et eller flere præfikser og et nr., fx DS 383, DS/EN 5414 osv. Hvis der efter nr. er angivet et A eller Cor, betyder det, enten at det er et tillæg eller et rettelsesblad til hovedstandarden, eller at det er indført i hovedstandarden. DS-betegnelse angives på forsiden. Overensstemmelse med anden publikation: Overensstemmelse kan enten være IDT, EQV, NEQ eller MOD IDT: Når publikationen er identisk med en given publikation. EQV: Når publikationen teknisk er i overensstemmelse med en given publikation, men præsentationen er ændret. NEQ: Når publikationen teknisk eller præsentationsmæssigt ikke er i overensstemmelse med en given standard, men udarbejdet på baggrund af denne. MOD: Når publikationen er modificeret i forhold til en given publikation.
3 INTERNATIONAL STANDARD ISO First edition Optics and photonics Medical endoscopes and endotherapy devices Part 5: Determination of optical resolution of rigid endoscopes with optics Optique et photonique Endoscopes médicaux et dispositifs d'endothérapie Partie 5: Détermination de la résolution optique des endoscopes optiques rigides Reference number ISO :2005(E) ISO 2005
4 ISO :2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel Fax Web Published in Switzerland ii ISO 2005 All rights reserved
5 ISO :2005(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 5, Microscopes and endoscopes. ISO 8600 consists of the following parts, under the general title Optics and photonics Medical endoscopes and endotherapy devices: Part 1: General requirements Part 2: Particular requirements for rigid bronchoscopes Part 3: Determination of field of view and direction of view of endoscopes with optics Part 4: Determination of maximum width of insertion portion Part 5: Determination of optical resolution of rigid endoscopes with optics Part 6: Vocabulary ISO 2005 All rights reserved iii
7 INTERNATIONAL STANDARD ISO :2005(E) Optics and photonics Medical endoscopes and endotherapy devices Part 5: Determination of optical resolution of rigid endoscopes with optics 1 Scope This part of ISO 8600 specifies a test method for determining the optical resolution of endoscopes for type testing. It is applicable to rigid endoscopes with optics designed for use in the practice of medicine for type testing. It is not applicable to endoscopes having a fibre-optic or opto-electronic imaging system. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 working distance d distance between object and distal end of endoscope NOTE For the purposes of the test specified in this part of ISO 8600, the object will be the resolution target specified in optical resolution r(d) maximum number of line pairs per millimetre which can be just perceived at a given working distance d of the endoscope 2.3 angular resolution α smallest angle whose vertex is at the distal window surface of the endoscope at which a line pair at a given working distance d can just be identified; it is calculated as follows: 1 α = arctan d r ( d ) 2.4 maximum image height maximum image height circular field of view radius of the field circle ISO 2005 All rights reserved 1