ISO 9345:2019 pdf free.Microscopes – Interfacing dimensions for imaging components.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in Iso 10934-1 and the following apply.
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3.1 parfocalizing distance of the objective Ii distance in air between the object plane (i.e. the uncovered surface of the object) and the locating flange
of the objective, when the microscope is in its working position
Note 1 to entry: See Figure 1. Figure 2 and Footnote b in Table 1.
[SOURCE: ISO 10934-1:2002, 2.80.2.4; modified — the symbol I added in the definition; Note from 150 10934-1:2002 omitted, and Note 1 to entry added.J
3.2 objective to primary image distance distance in air between the objective locating surface (of the nosepiece) and the primary image plane Note I to entry: It commonly has a value either 150 mm or infinity. It is a hypothetical value applied to microscopes designed for infinity-corrected objectives.
Note 2 to entry: See Figure 1.2 and Table 1.
[SOURCE: ISO 10934-1:2002, 2.80.2.1, modified — the symbol 12 added, Note 1 to entry modified, and Note 2 to entry added.]
3.3 focal length of the normal tube lens JNTL. focal length related to the magnification and the focal length of the objectives which are designed to operate with this tube lens
Note 1 to entry: See Figure2.
3.4 mechanical tube length distance in air between the objective-locating surface of the nosepiece and the eyepiece-locating surface of the viewing tube
Note 1 to entry: It is the length of the tube in its simplest form without any intermediate lenses for objectives corrected for a finite primary image distance.
Note 2 to entry: It commonly has a value of 160 mm. See Figure 1.
Note 3 to entry: For infinity-corrected objectives, the mechanical tube length is hypothetically considered to be infinite.
3.5 parfocalizing distance of the eyepiece distance between the locating flange of the eyepiece and the plane upon which the eyepiece is focused
Note 1 to entry: The plane upon which the eyepiece is focused is coincident with the plane of the final real image of the microscope when the eyepiece is mounted in the viewing tube. The parfocalizing distance of the eyepiece is one of the optical interfacing dimensions, and is commonly 10 mm.Note 2 to entry: This plane is coincident with the primary image plane of the microscope when the eyepiece is mounted in the viewing tube. See Figure 1 and Figure 2.
ISOURCE: ISO 10934-1:2002, 2.80.2.3, modified — the symbol 13 added, and Note 2 to entry added.1 NOTE 1 Examples of values with infinity-corrected imaging components in use by the several microscope manufacturers are given in the informative Annex A. NOTE 2 In case of adaptation of infinity-corrected objectives and tube lenses to instruments and equipment other than the microscopes of the manufacturer, the user of these components needs additional dimensional information from the manufacturer for proper assembly, which are described in the informative Annex C. Many microscopes have built-in prisms and lenses to change the position and/or the magnification of the image. In this case, the microscope shall have a construction such that, in combination with objectives conforming to this document, the primary image is produced 10 mm below the eyepiecelocating surface of the viewing tube.Nominal dimensions and tolerances on diameters of eyepieces and viewing tubes are given in Table 8 and illustrated in Figure 5.If the magnification of the primary image is changed by built-in optical systems, the tube factor shall be marked on the magnification changing component (stand, tube, etc.); e.g. 1,25x.ISO 9345 pdf download.