GB/T 41398-2022 English PDF

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GB/T 41398-2022: Microscopes一Minimum requirements for binocular tubes
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Basic data

Standard ID: GB/T 41398-2022 (GB/T41398-2022)
Description (Translated English): MicroscopesһMinimum requirements for binocular tubes
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N32
Word Count Estimation: 6,660
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41398-2022: Microscopes一Minimum requirements for binocular tubes

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Microscopes—Minimum requirements for binocular tubes ICS 37.020 CCSN32 National Standards of People's Republic of China Microscope Binocular Tube Minimum Requirements (ISO 19055.2015, MOD) Published on 2022-04-15 2022-11-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Requirement 1 Appendix A (normative) Test method for binocular tube 3

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). Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Optical and Photonics Standardization Technical Committee (SAC/TC103). This document is drafted by. Ningbo Teaching Instruments Co., Ltd., Shanghai Visionary Optoelectronics Technology Co., Ltd., Nanjing Donglilai Optoelectronics Industry Co., Ltd., Shanghai Qianxin Instrument Co., Ltd., Shanghai University of Science and Technology, Jiangxi Phoenix Optical Technology Co., Ltd., Guangzhou Mingmei Optoelectronics Technology Technology Co., Ltd., Microaudie Industrial Group Co., Ltd., Ningbo Zhanjing Optical Instrument Co., Ltd., Ningbo Yongxin Optical Co., Ltd., Wu Zhou Oka Optical Instrument Co., Ltd., Ningbo Sunny Instrument Co., Ltd., Ningbo Huaguang Precision Instrument Co., Ltd., Nanjing Jiangnan Yongxin Optical Co., Ltd. Co., Ltd., Shanghai Institute of Optical Instruments. The main drafters of this document. Wang Guorui, Wang Weisheng, Hong Yiping, Hua Yue, Zhang Wei, Cao Xiaohong, Zhang Chunwang, Yang Zesheng, Bao Jinquan, Cui Zhiying, Zhang Tao, Hu Senhu, Kong Yanbo, Li Xi, Feng Yisheng. Microscope Binocular Tube Minimum Requirements

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. 3.2 optical axis The axis determined by the central ray emitted from the central object point of the object plane and exiting through the eyepiece. 3.3 convergence convergence The phenomenon in which the intersection of the optical axes of the left and right optical systems is farther from the eye than the eyepiece. 3.4 divergence The phenomenon in which the intersection of the optical axes of the left and right optical systems is closer to the eye than the eyepiece. 3.5 like curl imagingrotation The image rotation orientation with the optical axis as the rotation axis. 3.6 relative brightness The ratio of the brightness of the darker to the brighter of two optical systems. Note 1.The relative brightness requirements specified in Table 3 apply to any polarization state. Note 2.Expressed in percentage (%).

4 Requirements

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

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