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1、INTERNATIONAL STANDARD 8577 First edition 1 i397-0845 Optics and optical instruments - Microscopes - Spectral filters Optique et instruments doptique - Microscopes - Filtres color a=400net; p=iso; o=isocs; s=central Printed in Switzerland Copyright International Organization for Standardization Prov
2、ided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 23:54:14 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 IS0 IS0 8577: 1997(E) Introduction The objective of this International Standard is to define the diameters
3、 of spectral filters used in microscopes in order to make an exchange of these filters possible. In addition, qualitative specifications are given for the optical properties of two kinds of filters: filters which can be used in the observation light path, and others with larger optical tolerances wh
4、ich are used in the illumination light path. By choosing appropriate filters, optical microscope illumination can be modified in order to make it possible to view specific details or to improve their observation. Copyright International Organization for Standardization Provided by IHS under license
5、with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 23:54:14 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Lic
6、ensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 23:54:14 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD o IS0 IS0 8577:1997( E) Optics and optical instruments - Microscopes - Spectral filters 1 Scope This International Standard
7、 specifies recommended diameters to allow the interchangeability of spectral filters used in microscopes, as well as permissible filter material defects and processing faults. This International Standard differentiates between two forms of spectral filters: Form A: Filters to be used both in the obs
8、ervation light path and in the illumination light path; Form B: Filters to be used solely in the illumination light path. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publ
9、ication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain regis
10、ters of currently valid International Standards. IS0 1011 O-3:1 996, Optics and optical instruments - Preparation of drawings for optical elements and systems - Parf 3: Material imperfections - Bubbles and inclusions. IS0 10110-4:- 1 Optics and op , tical instruments - Preparation of drawings for op
11、tical elements and systems - Part 4: Material imperfections - Inhomogeneity and striae. IS0 1011 O-51 996, Optics and optical instruments - Preparation of drawings for optical elements and systems - Part 5: Surface form tolerances. IS0 1011 O-7:1 996, Optics and optical instruments - Preparation of
12、drawings for optical elements and systems - Part 7: Surface imperfection tolerances. IS0 1 OIIO-8:- 1 Optics and op Part 8: Sunace t4 -I- 2/-; 1 surface form tolerance31 in accordance with so 1011 o-5 313 (0,5) 3120 (10) P3 Surface quality4) in accordance with IS0 10110-8 P2 I d- Bubble$) in accorda
13、nce with IS0 1011 O-3 l/2 x 0,lO l/2 x 0,25 l/3 x 0,40 Parallelism tolerance I s 5 I s 20 Permissible deflectio#) =s 2,5 s 10 NOTE - The currently used diameters 18 mm, 30 mm, 40 mm and 50 mm should be avoided in new designs. Data for diameters apply only to unmounted filters. I) This indicates the
14、code number for surface imperfections (5) followed by the number of permissible defects multiplied by the square root, expressed in millimetres, of the area of the maximum allowed defect. EXAMPLE 2 x OJO stands for 2 defects with a maximum area of 0,Ol mm* (the sum for both sides of the filter). 2)
15、This indicates the code number for striae (2) the specification for inhomogeneity (-) and the striae class, i.e. referred to the diameter of the filter, the following permissible effective area of striae: For filter diameters 20 mm, 25 mm, 32 mm and 45 mm, permissible effective areas of class 4 stri
16、ae are, respectively, s 3,0 mm*, s 4,5 mm*, s 7,5 mm* and s 15 mm*; for class 1 striae the areas are, respectively, c 30 mm*, s 45 mm*, G 75 mm* and s 150 mm*. 3) In accordance with IS0 10110-5, the first number represents the code number for surface form tolerance (3), followed by the number of int
17、erference fringes; the number in brackets indicates the permissible deviation from rotational symmetry. 4) This indicates that a polished surface is required with less than 16 (P3) or 80 (P2) microdefects per IO mm linear scan. 5) This indicates the code number for bubbles (I), the permissible numbe
18、r of bubbles, multiplied by the square root, in millimetres, of the area of the largest permissible bubble. 6) In some cases, e.g. compound filters, it may be advisable to state the permissible deflection instead of the parallelism tolerance. 4 Marking Filters of form A shall be marked with the indi
19、cation “IS0 8577 A”. The marking shall be placed on the filter itself or on the packaging. Marking of filters of form B is not required. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04
20、/25/2007 23:54:14 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 23:
21、54:14 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 8577: 1997(E) 0 IS0 ICS 37.020 Descriptors: optics, optical. equipment diameters, marking, interchangeability. ,m icroscopes, optical microscopes, optical filters, specifications, materials specifications, dimensions, Price based on 2 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 23:54:14 MDTNo reproduction or networking permitted without license from IHS -,-,-