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JJG 922-2008 English PDF

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JJG 922-2008: Verification Regulation of Standard Devices of Vertex Power for Eye Refractometers
Status: Valid

JJG 922: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 922-2008English399 Add to Cart 3 days [Need to translate] Verification Regulation of Standard Devices of Vertex Power for Eye Refractometers Valid JJG 922-2008
JJG 922-1996English239 Add to Cart 2 days [Need to translate] Verification Regulation of The Standard Device of Vertex Power for Refractometers Obsolete JJG 922-1996

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Basic data

Standard ID JJG 922-2008 (JJG922-2008)
Description (Translated English) Verification Regulation of Standard Devices of Vertex Power for Eye Refractometers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A60
Classification of International Standard 17.180
Word Count Estimation 17,175
Date of Issue 2008-09-27
Date of Implementation 2009-01-01
Older Standard (superseded by this standard) JJG 922-1996
Quoted Standard ISO 10342-2003; JJG 892-2005; JJF 1002-1998; JJF 1059-1999
Drafting Organization China Institute of Metrology
Administrative Organization National Technical Committee on Optical Measurement
Regulation (derived from) ?AQSIQ Announcement 2008 No.112;
Issuing agency(ies) State Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to standard vertex refractometer (including objective standards analog eye, subjective standards simulated eye, cylinder standard device, refractor IPD standard device) initial verification, follow-up tests and in-service inspection.

Similar standards

JJG 879   JJF 1106   JJG 810   JJG 211   JJG 920   JJG 923   

JJG 922-2008: Verification Regulation of Standard Devices of Vertex Power for Eye Refractometers


---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.
Verification Regulation of Standard Devices of Vertex Power for Eye Refractometers State verification procedures People's Republic of China Refractor vertex standard equipment Posted 2008-09-27 2009-01-01 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Refractor device vertex standard test procedures eRefractometers Replacing JJG 922-1996 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on September 27, 2008, and from From January 1, 2009 implementation. Focal point. the National Technical Committee on Optical metrology Drafting units. China Institute of Metrology This procedure committee commissioned by the National Optical measurement technology is responsible for interpreting The drafters of the regulations. Liu Wenli (China Institute of Metrology) Zhu Jianping (China Institute of Metrology) Li Fei (China Institute of Metrology) Hongbao Yu (China Institute of Metrology)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 Terms (1) 4 Overview (2) 4.1 Classification and Application (2) 4.2 Composition (2) 5 metering performance requirements (2) 5.1 objective standards model eye (2) 5.2 Subjective standards model eye (2) 5.3 Standard cylinder (3) 5.4 IPD Standard (3) 6 General Requirements (3) 7 control of measuring instruments (3) 7.1 Verification Environment (3) 7.2 test project and the main test equipment (3) 7.3 Verification Methods (4) 7.4 Verification Results Processing (6) 7.5 test cycle (6) Appendix A refractor vertex standard format recommended by the original record verification device (7) Appendix B refractor vertex standard is the certificate verification page format (8) Appendix C objective standards model eye measurements Uncertainty Evaluation Example (9) Appendix D model eye principle objective standards (11) Appendix E subjective standards model eye principle (12) Refractor device vertex standard test procedures

1 Scope

The order applies to standard vertex refractometer (including simulation objective standards eye, subjective standards analog eyes, Lenticular standard, a standard device refractor IPD) of the initial verification, subsequent verification and in-service inspection.

2 Citations

ISO 10342.2003 "ophthalmic equipment - refractometer" (Ophthalmicinstruments─EyeRefracto- meters) JJG 892-2005 "optometry machine test procedures" JJF1002-1998 "national verification procedures to write rules" JJF1059-1999 "Evaluation and Expression of Uncertainty in Measurement" When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 Terms

The following terms apply to this procedure. 3.1 refractor vertex standard equipment standarddevicesofvertexpowerforeyerefractometers Verification of all types of standard device refractor spherical degree, degree cylinder, cylinder axial, IPD and other technical indicators called optometry Instrument vertex standard device. Refractor vertex standard is divided into objective and subjective standards standards unit. 3.2 objective standards is objectivestandarddevices Mirror Ball standard for verification of objective type refractometer, cylinder, cylinder lens axial, IPD and other technical indicators. Including simulation objective standards eye, cylinder standard, a standard device IPD refractor. 3.3 Subjective standards is subjectivestandarddevices Verification subjective formula for the standard device refractor spherical degrees. Subjective standards including analog and eye diopter cylinder. 3.4 objective standards model eye objectivestandardmodeleyes Standard model eye test objective refractor style mirror ball is called the degree of use of objective standards model eye (called objective Analog eye). 3.5 Subjective standards model eye subjectivestandardmodeleyes Standard analog subjective eye test refractor style mirror ball of the formula used is called subjective standard analog eyes (referred to subjective Analog eye). By the sight of the cylinder with the top power of a standard lens zero diopter mating together. 3.6 lenticular standard device cylindricalstandarddevices Verification objective refractor type lenticular degree cylinder axial standard device used is called lenticular standard device. Lenticular standard It consists of lenticular model eye (cylindricalmodeleyes) and axial controller (axialholder) components. 3.7 refractor IPD standard device pupildistancestandarddevices Device characterization objective refractor type IPD IPD refractometer measurement function is called standard (hereinafter referred to as the standard IPD Aligner).
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