1、BRITISH STANDARD BS ISO 11884-1:2006 Optics and photonics Minimum requirements for stereomicroscopes Part 1: Stereomicroscopes for general use ICS 37.020 BS ISO 11884-1:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 9 February 2006 BSI
2、9 February 2006 ISBN 0 580 47811 4 National foreword This British Standard reproduces verbatim ISO 11884-1:2006 and implements it as the UK national standard. It supersedes BS 7012-10-10.1:1998 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee which has
3、 the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the U
4、K. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standard
5、s 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 necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard do
6、es not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document w
7、as last issued. Amendments issued since publication Amd. No. Date Comments CPW/172, Optics and photonics, to Subcommittee CPW/172/5, Microscopes, Reference number ISO 11884-1:2006(E)INTERNATIONAL STANDARD ISO 11884-1 Second edition 2006-01-15 Optics and photonics Minimum requirements for stereomicro
8、scopes Part 1: Stereomicroscopes for general use Optique et photonique Exigences minimales pour les stromicroscopes Partie 1: Stromicroscopes usage gnral BS ISO 11884-1:2006ii iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
9、 (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,
10、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/
11、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 me
12、mber 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 11884-1 was prepared by Technical Committee ISO/TC 172, Optics and ph
13、otonics, Subcommittee SC 5, Microscopes and endoscopes. This second edition cancels and replaces the first edition (ISO 11884-1:1998), which has been technically revised. ISO 11884 consists of the following parts, under the general title Optics and photonics Minimum requirements for stereomicroscope
14、s: Part 1: Stereomicroscopes for general use Part 2: High performance microscopes BS ISO 11884-1:2006blank 1 Optics and photonics Minimum requirements for stereomicroscopes Part 1: Stereomicroscopes for general use 1 Scope This part of ISO 11884 specifies minimum requirements for stereomicroscopes u
15、sed mainly for visual observation for general use. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including
16、any amendments) applies. ISO 9022-1, Optics and optical instruments Environmental test methods Part 1: Definitions, extent of testing ISO 9022-2, Optics and optical instruments Environmental test methods Part 2: Cold, heat and humidity ISO 9022-3, Optics and optical instruments Environmental test me
17、thods Part 3: Mechanical stress ISO 10934-1, Optics and optical instruments Vocabulary for microscopy Part 1: Light microscopy ISO 11883, Optics and optical instruments Microscopes Marking of stereomicroscopes ISO 15227, Optics and optical instruments Microscopes Testing of stereomicroscopes IEC 610
18、10-1, Safety requirements for electrical equipment for measurement, control, and laboratory use Part 1: General requirements CIE 10526, CIE Standard Illuminants for Colorimetry 3 Terms and definitions For the purposes of this part of ISO 11884, the terms and definitions given in ISO 10934-1 apply. 4
19、 Requirements The following are minimum requirements. 4.1 Optical and mechanical specifications The specifications given in Table 1 shall apply. Testing shall be done in accordance with 5.1. BS ISO 11884-1:2006BS ISO 11884-1:2006 2 Table 1 Requirements for optical and mechanical specifications Crite
20、rion Requirements Tolerance of total magnification 10 % Difference in magnification between left and right optical systems u 2 % vertical u 20 horizontal bconvergence u 45 Difference in axis between left and right optical systems adivergence u 10 Horizontal difference in the centre of the primary im
21、age between left and right optical systems cu 0,33 mm vertical u 0,2 mm horizontal edivergence u 0,4 mm Difference in the centre of the eyepiece diaphragm between left and right optical systems dconvergence u 0,4 mm Lateral shift of focusing plane by magnification change 0,4 mm diameter fFocus diffe
22、rence between left and right optical systems u 1,5 D F gDifference in imaging rotation between left and right image u 3 Minimum range for interpupillary distance 55 mm to 75 mm Difference in exit pupil height between left and right optical system at the equal dioptre adjustments u 1,5 mm Resolution
23、in the centre of the field W 2 000 NA line pairs/mm haTo be measured with a 10 eyepiece adjusted at 0 D. bThis requirement applies to those stereomicroscopes where the mechanical axes of the eyepieces are parallel to each other due to the design. cThis requirement is only valid when the horizontal d
24、ifference in axis does not apply. dTo be measured on the primary image plane of the stereomicroscope to be tested. eThis requirement applies to those stereomicroscopes where the mechanical axes of the eyepieces are not parallel due to the design. fThe displacement of a centred structure shall be ins
25、ide a centred circle of 0,4 mm diameter in the primary image plane. gDepth of field (in object space) D F , expressed in millimetres, is given by: (= )= (= ) F 2 TOT VIS 1 7 NA 2 NA D M = = += = where is the wavelength in millimetres; NA is the numerical aperture; M TOT VIS is the total visual magni
26、fication. hTo be measured with the standard illuminant A in accordance with CIE 10526. 4.2 Environmental conditions Testing shall be done in accordance with 5.2. BS ISO 11884-1:20063 4.2.1 Conditions of use The functioning of stereomicroscopes given in the relevant instrument specifications, shall b
27、e ensured under the environmental conditions given in Table 2. Under these conditions all optical and mechanical requirements apply, if necessary with the inclusion of correction tables. Table 2 Conditions of use Criterion Environmental condition Temperature 10 C to 40 C Relative humidity u 85 % Atm
28、ospheric pressure 700 hPa to 1 060 hPa Shock 10 g for the duration of 6 ms 4.2.2 Storage conditions After being exposed to the conditions given in Table 3, stereomicroscopes shall meet the instrument specifications under conditions of use as specified in 4.2.1. Table 3 Storage conditions Criterion E
29、nvironmental condition Temperature 10 C to 55 C Relative humidity u 95 % Atmospheric pressure 700 hPa to 1 060 hPa 4.2.3 Transport conditions The transport clause is recommended for all packing requirements, but the following conditions shall apply when compliance to the transport clause of this par
30、t of ISO 11884 is claimed by the manufacturer. After exposure of the stereomicroscopes in their original packing to the conditions given in Table 4, the stereomicroscopes shall meet the instrument specifications under conditions of use as specified in 4.2.1. Table 4 Transport conditions Criterion En
31、vironmental condition Temperature 40 C to 70 C Relative humidity u 100 % Atmospheric pressure 500 hPa to 1 060 hPa Vibration, sinusoidal 10 Hz to 500 Hz; 0,5 g Shock 30 g for the duration of 6 ms Bump 10 g for the duration of 6 ms 4 4.3 Safety Testing shall be done in accordance with 5.3. IEC 61010-
32、1 shall apply. 5 Test methods All tests specified in this part of ISO 11884 are type tests. 5.1 Testing of optical and mechanical specifications The requirements of 4.1 are tested in accordance with the test methods of ISO 15227. Measurements shall be carried out according to general rules of statis
33、tical evaluation. 5.2 Testing of the environmental conditions The requirements of 4.2 shall be tested in accordance with the test methods of the relevant part of ISO 9022 given in Table 5. 5.3 Testing of the safety Tests in accordance with IEC 61010-1 apply. 6 Accompanying documents The stereomicros
34、cope shall be accompanied by documents containing instructions for use, cleaning and maintenance. 7 Marking Marking shall be done in accordance with ISO 11883. BS ISO 11884-1:2006 5 Table 5 Environmental tests Conditions Test aIn accordance with Remarks ISO 9022-11-01-2 (10 2) C / 16 h dry heat ISO
35、9022-11-02-2 (40 2) C / 16 h Environmental conditions of use ISO 9022-12-01-2 (40 2) C / 90 % to 95 % RH / 16 h ISO 9022-2 damp heat ISO 9022-10-02-1 (10 3) C / 16 h cold ISO 9022-11-03-1 (55 2) C / 16 h dry heat Storage conditions ISO 9022-12-01-1 (40 2) C / 90 % to 95 % RH / 16 h ISO 9022-2 damp h
36、eat ISO 9022-10-08-0 (40 3) C / 16 h cold ISO 9022-11-05-0 (70 2) C / 6 h dry heat ISO 9022-16-01-0 (23 2) C / 80 % to 85 % RH / 5 cycles (40 2) C / 90 % to 95 % RH / 5 cycles ISO 9022-2 damp heat, cyclic ISO 9022-30-03-0 30 g / 6 ms shock ISO 9022-31-01-0 10 g / 6 ms / 1 000 shocks bump Transport c
37、onditions ISO 9022-36-02-0 1 g / 10 Hz to 2 000 Hz / 2 cycles ISO 9022-3 sinusoidal vibration aThe environmental test code reads as follows: ISO 9022-xx-yy-z ISO 9022 environmental International Standard xx: conditioning method _ yy: degree of severity _ z: state of operation of the instrument _ The
38、 figures “xx” in the conditioning methods listed above have the following meaning: 10: cold 11: dry heat 12: damp heat 13: condensed water 14: slow temperature change 16: damp heat, cyclic 30: mechanical stress - shock 31: mechanical stress - bump 36: mechanical stress - sinusoidal vibration. Severi
39、ty grades “yy” are given in the relevant part of ISO 9022. The figure “z” of the state of operation means: 0: specimen in its normal transport and/or storage container as provided by the manufacturer. 1: specimen unprotected, ready for operation, power supply not connected. 2: specimen in operation
40、during the test as specified in the relevant specification. BS ISO 11884-1:2006BS ISO 11884-1:2006 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Euro
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