GB/T 41398-2022Microscopes一Minimum requirements for binocular tubes (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document is modified to adopt ISO 19055:2015 "Minimum Requirements for Microscope Binocular Tubes".

Compared with ISO 19055:2015, this document has the following structural adjustments.

--- Added 3.4, and the subsequent item numbers will be extended in turn;

--- Chapter 4 has added article numbers, 4.1~4.6 correspond to the paragraphs in Chapter 4 of ISO 19055:2015 in turn;

--- Added A.6, and subsequent item numbers will be extended in turn.

The technical differences between this document and ISO 19055:2015 and their reasons are as follows.

--- Replace ISO 15227:2000 with the normatively cited GB/T 19863-2005, and the degree of consistency between the two documents is Modified to adapt to our country's technical conditions and improve operability;

--- Added the term and definition of "divergence" (see 3.4) to facilitate a correct understanding of the meaning of divergence in Table 1;

---In the characteristic "direction difference of the optical axis of the left and right optical systems" in Table 1, change the convergence requirement of the general-purpose lens barrel "<=45'" to "<=60'", the divergence requirement "<=10'" was changed to "<=30'", and the divergence requirement "<=3'" of the high-performance lens barrel was changed to "<=10'", so as to In line with the production level of Chinese enterprises and improve the economy;

--- Change the test method "ISO 15227.20006.3.13" in Table 2 to "A.6";

--- Increased the test method for the minimum range of diopter adjustment (see A.6).

1 Scope

This document specifies the requirements for compound microscope binocular tubes.

This document applies to the design, manufacture and quality assessment of compound microscope binocular tubes.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 19863-2005 Stereo microscope test method (ISO 15227:2000, MOD)

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 The distance between the exit pupils of the left and right optical systems

4 Requirements

4.1 Tables 1, 2 and 3 specify the minimum requirements for the optomechanical and radiometric characteristics of the binocular tube.