GB/T 7242-2010 English PDF

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GB/T 7242-2010: Centering error of lenses
Status: Valid

GB/T 7242: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7242-2010	329	Add to Cart	3 days	Centering error of lenses	Valid
GB/T 7242-1987	239	Add to Cart	2 days	Centering errors of lenses	Obsolete

Similar standards

GB/T 22062   GB/T 4315.2   GB/T 4315.1   GB/T 1224   GB/T 7660.2   GB/T 7660.1   

Basic data

Standard ID: GB/T 7242-2010 (GB/T7242-2010)
Description (Translated English): Centering error of lenses
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N30
Classification of International Standard: 01.100.20; 37.020
Word Count Estimation: 14,123
Date of Issue: 2010-12-01
Date of Implementation: 2011-05-01
Older Standard (superseded by this standard): GB/T 7242-1987
Quoted Standard: GB/T 1182; GB/T 1224; GB/T 13323-2009; GB/T 13962
Regulation (derived from): Announcement of Newly Approved National Standards 2010 No. 9 (No. 164 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the lens center offset terms and definitions, the reference axis is selected and labeling, labeling and inspection center deviation. This standard applies to spherical and spherical or spherical and plane consisting of the edge surface and has a rotationally symmetric lens and a cemented lens single. For a shape of the edge of the other lens (for example: rectangular lenses) is also applicable.

GB/T 7242-2010: Centering error of lenses

---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.
Centering error of lenses ICS 01.100.20; 37.020 N30 National Standards of People's Republic of China Replacing GB/T 7242-1987 Lens center deviation Issued on. 2010-12-01 2011-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 7242-1987 "center of the lens error." The main difference between this standard and GB/T 7242-1987 version is. --- Modify the standard name; --- Increasing the foreword, scope and normative references two sections; --- Updated reference standard code and name; --- Increasing the table heading 1; --- Modified form "of the selected reference axis" and "description" content 1. Examples 5 and 6 of the section; --- To increase the content of Table 1. Note 3; --- Modified "center deviation label" content; --- Increase the informative Appendix A representation of an example; --- Increased the title and the lens center deviation informative Appendix B formula. The Standard Annexes A and B are informative appendices. The standard proposed by China Machinery Industry Federation. This standard by the National Standardization Technical Committee photon science and optics (SAC/TC103) centralized. This new standard from Nanjing Jiangnan Yong Optical Co., Ltd., Suzhou, a light Instrument Co., Ltd., Shanghai Polytechnic University, Ningbo Yongxin Optics shares Ltd., Phoenix Optical Group Co., Ltd. Ningbo City, teaching equipment, Guiyang Xintian Optoelectronics Technology Co., Ltd., Ningbo Huaguang fine Dense Instrument Co., Ltd., Nanjing East to facilitate photoelectric Industrial Co., Ltd. Ningbo Sunny Instruments Co., Ltd., Wuzhou Oka optical instrument company and wheat Keao Di Industrial Group Co., Ltd. is responsible for drafting. The main drafters of this standard. HOU Yu Wei, Feng Qionghui, who Franc, son Wu Gang, Li Xi, Wang Guorui Hu Qing, Xu Liming, Yang Guanglie, Husen tiger, Zhang Jinghua, Outlay. This standard replaces the standards previously issued as follows. --- GB/T 7242-1987. Lens center deviation

1 Scope

This standard specifies the center of the lens deviation of terms and definitions, and the selected reference axis labels, labeling and inspection center deviation. This standard applies to the spherical surface with the spherical or spherical plane and consisting of a single lens and a cemented lens having a rotationally symmetrical edge surface. Correct Other edge shape having a lens (for example. rectangular lenses) is also applicable.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1182 Geometrical product specifications (GPS) geometric tolerances of form, orientation, location and runout tolerancing (GB/T 1182-2008, ISO 1101.2004, IDT) GB/T 1224 geometrical optics terminology, symbols GB/T 13323-2009 optical mapping (ISO 10110-1.2006, NEQ) GB/T 13962 Optical Instrument term

3 Terms and Definitions

GB/T 1224, GB/T 13323-2009 and GB/T 13962 and established the following terms and definitions apply to this standard. 3.1 Centering optical surface normals at the vertex of the reference axis deviation amount. An optical center of the lens surface of the centering deviation is the angle between the normal and the reference axis is measured at the apex of this angle called a loft, with Greece Χ represents the letter (see FIG. 1). figure 1 3.2 Reference axis datumaxis For labeling, testing and calibration center deviation, press locate parts or components of the optical surface of the specific properties of the selected axis. 3.3 Geometry axes geometricalaxis The axis of rotation of the lens edge surfaces. ......

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