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JJG 311-2014 English PDF

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JJG 311-2014: Focometers
Status: Valid

JJG 311: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 311-2014English509 Add to Cart 4 days [Need to translate] Focometers Valid JJG 311-2014
JJG 311-1996English279 Add to Cart 3 days [Need to translate] Verification Regulation of Focometer Obsolete JJG 311-1996
JJG 311-1983EnglishRFQ ASK 3 days [Need to translate] (Chinese Industry Standard) Obsolete JJG 311-1983

PDF similar to JJG 311-2014


Standard similar to JJG 311-2014

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Basic data

Standard ID JJG 311-2014 (JJG311-2014)
Description (Translated English) Focometers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A60
Classification of International Standard 17.180
Word Count Estimation 22,255
Date of Issue 2/14/2014
Date of Implementation 8/14/2014
Older Standard (superseded by this standard) JJG 311-1996
Quoted Standard GB/T 13962-2009
Regulation (derived from) AQSIQ Announcement No. 17 of 2014
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This Standard specifies the focal length of the instrument's initial verification, verification and subsequent use of checks.

JJG 311-2014: Focometers

---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.
Focometers State verification procedures People's Republic of China Meter focal length Issued on. 2014-02-14 2014-08-14 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Focal length instrument verification procedures Replacing JJG 311-1996 Focal point. the National Technical Committee on Optical metrology The main drafting units. China Institute of Metrology Participated in the drafting unit. Beijing Institute of Technology Shanghai Measurement and Testing Technology Research Institute This procedure committee commissioned by the National Optical measurement technology is responsible for interpreting The main drafters of this procedure. Li Fei (China Institute of Metrology) Zhu Jianping (China Institute of Metrology) Drafters participate. Yang Lei (China Institute of Metrology) He Chuan (Beijing Institute of Technology) Ye Junan (Shanghai Institute of Measurement and Testing)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 focal length (1) 3.2 boresight (1) Conjugate 3.3 (1) 3.4 lateral magnification (1) 4 Overview (1) 5 metering performance requirements (2) Luo 5.1 glass plate engraved line spacing (2) 5.2 collimator lens focal length (2) 5.3 measuring microscope objective lateral magnification (2) 5.4 holder and collimator positioning surface perpendicular to the visual axis of (3) 5.5 rail and boresight collimator parallelism (3) 5.6 meter focal length relative error (3) 6 General Requirements (3) 6.1 appearance requirements (3) 6.2 star point inspection collimator lens (3) 6.3 The actual resolution collimator lens (3) 6.4 collimator parallax (3) 7 control of measuring instruments (3) 7.1 test conditions (3) 7.2 Verification Project (4) 7.3 Verification Methods (5) 7.4 Verification Results Processing (8) 7.5 test cycle (8) Appendix A Calibrating the focal length of the original record format recommended (9) Appendix B focal length instrument calibration certificate/test results notice (inside) Recommended format (11) Appendix C shows the relative error of the focal length of instrument calibration results Uncertainty Analysis (14)

Introduction

This procedure is based on the JJG 311-1996 reference JJF1002-2010 "national verification procedures compiled Write Rules "re-revised. Compared with JJG 311-1996, except in accordance with section JJF1002-2010 made constitution And modify the formatting on the outside, the main technical changes are as follows. --- Increasing the focal length of the instrument described in the relevant terms (see Chapter 3); --- Chinese simplified the original procedure (2), (7), (9), and adjust the corresponding text (see Chapter 4, 7.3.2.3,7.3.2.6); --- Increasing the measurement performance requirements and general technical requirements, and "Perot engraving line spacing" "collimator was Vertical Lens Focal "" measuring microscope objective lateral magnification "" holder positioning surface and the visual axis collimator Degree "" parallel rails and the visual axis collimator "" focal length instrument relative error "and adjusted to the measurability Energy requirements, the "look and feel requirements" "collimator lens star point inspection," "collimator lens actual points Discrimination of "" collimator parallax "adjustment to general performance requirements (see Chapters 5 and 6); --- "Optical instruments term", the "holder positioning surface parallel to the optical axis of the light pipe according to GB/T 13962-2009 Verticality "and" rail and collimator axis parallel degree ", changed to" holder positioning surface and Peace Vertical row of the visual axis of the light pipe "and" parallel "with the collimator rail visual axis, and adjust the subject Reference methods and measuring instruments (see Chapters 5 and 7); --- Modify the focal length of the instrument "collimator lens resolution" requirement, appropriate to reduce the "real collimator lens International resolution "requirement (see Chapter 6); --- Increasing the recommended format for the original record verification, calibration certificate/test results notice (inside) Recommended format Etc. (see Appendix A and Appendix B). The previous versions of this Recommendation published case. --- JJG 311-1996. Focal length instrument verification procedures

1 Scope

The order applies to the focal length of instrument initial verification, subsequent verification and the use of checks. 2. References This procedure references the following documents. GB/T 13962-2009 optical instruments term For dated references, only the dated edition applies to this procedure; undated reference documents Member, the latest edition (including any amendments) applies to this procedure.

3 terminology and units of measurement

The following terms and definitions apply to this procedure. 3.1 focal length focallength Main point corresponding to the distance between the focal point. 3.2 boresight visualaxis In the optical instruments, the reticle crosshairs intersection with the connection was mirrored side node. 3.3 conjugated conjugate In the object space of the optical system and the image space, and was like a mutual correspondence relationship. 3.4 lateral magnification lateralmagnification Also known as lateral magnification. When the imaging optical system, the size of the image and the object size ratio.

4 Overview

The main instrument used to measure the focal length of the zoom optical lens or optical lens group. At present, the common focal instrument has two main Kinds. one is the traditional optical bench, in addition to measuring the focal length, the optical bench can also be used for the optical system resolution Force measurement; the other is the focal length of new optoelectronic device, in the traditional basis of the principle of measuring the focal length of the optical bench, using Modern optoelectronic devices to achieve measurement acquisition and the length of the image data, by computing systems software, and ultimately focus Distance measurements. By the focal length of the light pipe instrument generally parallel to the lens holder, microscopes and measuring section rails and other components. The method of measuring instrument is mainly used in the focal length magnification method, the principle shown in Figure 1. Collimator lens focal plane reticle (also known as Perot plate) engraved on a certain line spacing Y0, imaging test Focal plane of the lens, the pitch of the reticle image is Y'0, it was like the relationship between two focal plane by equation (1). f '= f'c Y0 Y'0 (1) Where. f '--- sample lens focal length, mm;

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