1、BRITISH STANDARD BS EN ISO 17526:2003 Incorporating Corrigendum No. 1 Optics and optical instruments Lasers and laser-related equipment Lifetime of lasers The European Standard EN ISO 17526:2003 has the status of a British Standard ICS 31.260 BS EN ISO 17526:2003 This British Standard was published
2、under the authority of the Standards Policy and Strategy Committee on 30 June 2003 BSI 20 August 2003 ISBN 0 580 42167 8 National foreword This British Standard is the official English language version of EN ISO 17526:2003. It is identical with ISO 17526:2003. The UK participation in its preparation
3、 was entrusted to Technical Committee CPW/172, Optics and optical instruments, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publicat
4、ions referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necess
5、ary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interp
6、retation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title
7、page, pages ii to v, a blank page, pages 1 to 12, the Annex ZA page and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 14630 Corrigendum No. 1 20 August 2003 Replacing the EN ISO
8、foreword page and incoporating the Annex ZA pageEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO17526 June2003 ICS31.260 Englishversion OpticsandopticalinstrumentsLasersandlaserrelated equipmentLifetimeoflasers(ISO17526:2003) OptiqueetinstrumentsdoptiqueLasersetquipements associsauxlasersDuredev
9、iedeslasers(ISO 17526:2003) LaserundLaseranlagenLebensdauervonLasern(ISO 17526:2003) ThisEuropeanStandardwasapprovedbyCENon20May2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalterat
10、ion.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoi
11、tsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzer
12、landandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO17526:2003ECORRECTED20030716 Fo
13、reword Thisdocument(ENISO17526:2003)hasbeenpreparedbyTechnicalCommitteeISO/TC176 “Qualitymanagementandqualityassurance“incollaborationwithTechnicalCommitteeCEN/TC 123“Lasersandlaserrelatedequipment“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,either
14、bypublicationof anidenticaltextorbyendorsement,atthelatestbyDecember2003,andconflictingnational standardsshallbewithdrawnatthelatestbyDecember2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Be
15、lgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy, Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlandand theUnitedKingdom. Endorsementnotice ThetextofISO17526:2003hasbeenapprovedbyCENasENISO17526:2003withoutany modifications. NOTENor
16、mativereferencestoInternationalStandardsarelistedinAnnexZA(normative). ENISO17526:2003 Reference number ISO 17526:2003(E)INTERNATIONAL STANDARD ISO 17526 First edition 2003-06-15 Optics and optical instruments Lasers and laser-related equipment Lifetime of lasers Optique et instruments doptique Lase
17、rs et quipements associs aux lasers Dure de vie des lasers ENISO17526:2003ii ENISO17526:2003iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 3.1 Modes of operation . 1 3.2 Operating conditions 2 3.3 Lifetime related terms. 3 3.4 Types and cl
18、assification. 5 3.5 Others. 5 4 Symbols and abbreviated terms 6 4.1 Symbols . 6 4.2 Abbreviated terms. 6 5 Test methods. 6 5.1 General. 6 5.2 Selection of lasers for lifetime testing 7 5.3 Lifetime test in APPC- and ACC-mode . 7 5.4 Lifetime test at APC-mode . 7 5.5 Lifetime tests at limited apertur
19、e. 8 6 Evaluation and extrapolation. 8 7 Test report 10 Bibliography . 12 ENISO17526:2003iv 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
20、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
21、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 Internationa
22、l 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 eleme
23、nts 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 17526 was prepared by Technical Committee ISO/TC 172, Optics and optical instruments, Subcommittee SC 9, Electro-optical systems. ENISO17526:2003 vIntroducti
24、on There are many different types of lasers with very different attributes and very different areas of application; not all types of lasers can be treated by the same means and measures to characterize and specify their longterm behaviour and lifetime. This International Standard covers many types o
25、f laser, but not all methods and procedures can be applied to all types. There are lasers, primarily laser diodes in the lower power range, which are produced in large quantities and which allow the performance of lifetime tests on large quantities to gain results on a statistically significant leve
26、l. In this case and if more than approximately 50 lasers are used for testing, lifetime predictions using informative annex B of IEC 61751:1998, may be applied alternatively to this International Standard. High-power lasers are manufactured in low quantities and lifetime tests cannot be carried out
27、on statistically significant sample sizes. There are types of laser of which the main components cannot be repaired, e.g. sealed-tube gas lasers or semiconductor lasers. There are others that can easily be repaired, e.g. CO 2 lasers. The former class may be characterized by “lifetime”, the latter mo
28、re appropriately characterized by “meantime to failure”. ENISO17526:2003blankINTENRATIONAL TSANDADR IS:62571 O3002(E)I SO 3002 All irhgts seredevr 1Optics and optical instruments Lasers and laser-related equipment Lifetime of lasers 1 Scope This International Standard covers terms and definitions as
29、 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 ap
30、plies for all types of lasers for which lifetime is a critical issue, including diode lasers except those used in telecommunications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies
31、. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 11145:2001, Optics and optical instruments Lasers and laser-related equipment Vocabulary and symbols ISO 11554:2003, Optics and optical instruments Lasers and laser-related equipment Test
32、methods for laser beam power, energy and temporal characteristics IEC 60050-191:1990, International Electrotechnical Vocabulary. Chapter 191: Dependability and quality of service IEC 61703:2001, Mathematical expressions for reliability, availability, maintainability and maintenance support terms 3 T
33、erms and definitions For the purposes of this document, the terms and definitions given in ISO 11145 and the following apply. NOTE For simplicity, in all following parts of this International Standard the term “power” refers to cw or repetitive-cw mode, whereas “energy“ refers to pulse and quasi-cw
34、mode. 3.1 Modes of operation NOTE 1 The following modes of operation define the temporal and pulsed characteristics of the laser. NOTE 2 There might be modes of operation that are not covered by the subsequent classification. These modes should be described in detail in the test report. 3.1.1 cw-mod
35、e mode where the laser emits radiation continuously over periods of time longer than or equal to 0,25 s ENISO17526:20031ISO 17526:2003(E) 2 I SO 3002 All irhgts seredevr3.1.2 repetitive cw-mode mode in which the laser is operated in cw-mode but repetitively switched on and off more than once per min
36、ute 3.1.3 pulsed mode mode in which the laser delivers its energy in the form of a single pulse or a train of pulses NOTE 1 The duration of a pulse is shorter than 0,25 s. NOTE 2 The subsequently defined modes of operation (3.1.4 to 3.1.7) are special cases of pulsed mode. 3.1.4 pulse train mode mod
37、e in which the laser emits at least 100 subsequent radiation pulses (pulse duration 0,25 s) at a continuous pulse repetition rate 3.1.5 single pulse mode mode in which the laser emits single pulses at low repetition rate, i.e. the laser medium has reached its equilibrium state between subsequent pul
38、ses NOTE The laser is considered to be in its state of equilibrium, if each pulse is identical to the first pulse after switch- on of the laser in all characteristics that are relevant for the intended application. 3.1.6 burst pulse mode mode in which a pulsed laser beam emitting at a fixed pulse re
39、petition rate f Pis repetitively switched on and off, where each burst contains at least two pulses and the time interval between two bursts is at least 2 the inverse of the pulse repetition rate 3.1.7 quasi-cw-mode mode in which the duration of the laser radiation is so long that the laser active m
40、aterial has reached its optical but not its thermal equilibrium NOTE For some laser types (especially diode lasers and diode laser based devices) this operation mode is relevant. 3.2 Operating conditions NOTE 1 In the following definitions different modes of long-term operation are defined under whi
41、ch a lifetime test is performed. NOTE 2 For simplicity, in the subsequent clauses, only the term “laser” is used, although the respective definitions and methods might also refer to laser devices, laser units, laser modules, etc. in accordance with 3.4. 3.2.1 automatic pump power control mode APPC-m
42、ode mode in which the laser is operated at a constant, automatically controlled pump power (energy) with all other operating conditions (e.g. temperature) being kept constant NOTE For optically pumped lasers, e.g. solid-state lasers, the operating current for the arc lamps or pump diodes is adjusted
43、 to compensate for degradation of the pump source. ENISO17526:20032ISO 17526:2003(E) I SO 3002 All irhgts seredevr 33.2.2 automatic current control mode ACC-mode mode in which the laser is operated at constant, automatically controlled operation current with all other operating conditions (e.g. temp
44、erature) being kept constant NOTE ACC-mode is only applicable for lasers with current-controlled output power, e.g. arc lamp pumped solid-state- lasers, some types of gas lasers or diode lasers. For certain types of lasers, an automatic voltage control mode (AVC- mode) may also be applied. 3.2.3 aut
45、omatic power control mode APC-mode mode in which the laser is operated at constant automatic controlled optical output power (energy) by adjusting the pump power (energy) (e.g. operation current or optical pump power) with all other operating conditions (e.g. temperature) being kept constant 3.2.4 u
46、ser selected mode mode in which the laser is operated at constant user-accessible settings NOTE Examples of the parameters to be held on a constant level are: the current of the exciting discharge of a gas laser, the current of the flashlamp of a solid state laser, the current of a diode laser, pump
47、 power or pump energy. 3.3 Lifetime related terms 3.3.1 time to failure TTF total time duration of operating time of an item, from the instant it is first put in an up state, until failure or from the instant of restoration until next failure IEC 60050-191-10-02:1990 NOTE If time to failure refers t
48、o a significant component or subsystem of the laser, this should be stated with the TTF-statement. 3.3.2 mean time to failure MTTF expectation of the time to failure IEC 60050-191-12-07:1990 3.3.3 availability ability of an item to be in a state to perform a required function under given conditions at a given instant of time or over a given time interval, assuming t
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