ISO 9345:2019 pdf download.Microscopes — Interfacing dimensions for imaging components
1 Scope
This document specifies optically and mechanically related dimensions for imaging components of a microscope such as
a) the dimensions related to objective, eyepiece and tube lens,
b) the dimensions of screw thread types for connecting a microscope objective to the nosepiece, and
c) the diameters of interchangeable eyepieces and corresponding viewing tubes of microscopes.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 10934-1, Optics and optical instruments — Vocabulary for microscopy — Part 1: Light microscopy
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10934-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1 parfocalizing distance of the objective
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 l 1 added in the definition; Note from ISO 10934-1:2002 omitted, and Note 1 to entry added.]
3.2 objective to primary image distance
distance in air between the objective locating surface (of the nosepiece) and the primary image plane
Note 1 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 l 2 added, Note 1 to entry modified, and Note 2 to entry added.]
3.3 focal length of the normal tube lens
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 Figure 2.
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.
[SOURCE: ISO 10934-1:2002, 2.80.2.3, modified — the symbol l 3 added, and Note 2 to entry added.]
ISO 9345:2019 pdf download
