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JJG 866-2008: Verification Regulation of Standard Lenses of Vertex Power
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJG 866-2008	English	559	Add to Cart	5 days [Need to translate]	Verification Regulation of Standard Lenses of Vertex Power
JJG 866-1994	English	279	Add to Cart	3 days [Need to translate]	Verification Regulation of Standard Lenses of Vertex Power

JJG 866-2008: Verification Regulation of Standard Lenses of Vertex Power

---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 Lenses of Vertex Power State verification procedures People's Republic of China Vertex standard lens Posted 2008-09-27 2009-01-01 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Vertex standard lens test procedures Replacing JJG 866-1994 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. Zhang Ji Yan (China Institute of Metrology) Liu Wenli (China Institute of Metrology) Zhu Jianping (China Institute of Metrology) High Bright (China Institute of Metrology)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 Terms (1) 4 Overview (2) 4.1 Classification (2) 4.2 Composition and use (2) 5 metering performance requirements (2) 5.1 glasses with vertex standard lens (2) 5.2 special contact lens vertex standard lens (3) 6 General Requirements (3) 7 control of measuring instruments (3) 7.1 Verification Environment (3) 7.2 Verification Project and measuring equipment (4) 7.3 Verification Methods (5) 7.4 Verification Results Processing (8) 7.5 test cycle (8) Appendix A glasses recommended format with standard lens vertex original records (9) Appendix B special contact lens standard lens vertex original record format recommended (11) Appendix C glasses with lenses in the vertex standard test certificate Recommended page format (12) Appendix D special contact lens vertex standard lens calibration certificate within the recommended format page (13) Appendix E lens vertex standard measurement uncertainty evaluation sample (14) Vertex standard lens test procedures

1 Scope

The order applies to vertex standard lenses (including glasses dedicated vertex by vertex standard lenses and contact lenses Standard lens) of the initial verification, subsequent verification and in-service inspection.

2 Citations

ISO 9342-1.2005 "Optics and optical instruments - focimeter check with lenses - Part 1. Measurement glasses mirror Focimeter check sheet with lens "(Opticsandopticalinstruments-Testlensesforcalibrationof focimeters-Part 1. Testlensesforfocimetersusedformeasuringspectaclelenses) ISO 9342-2.2005 "Optics and optical instruments - focimeter check with lenses - Part 2. Measurement of contact lenses Focimeter check with lens "(Opticsandopticalinstruments-Testlensesforcalibrationoffoci- meters-Part 2. Testlensesforfocimetersusedformeasuringcontactlenses) JJG 580-2005 "focus meter test procedures" 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 glasses with vertex standard lens standardtestlensesforcalibrationoffocimetersused formeasuringspectaclelenses Designed to measure the test spectacle lens focimeter standard lenses. 3.2 special contact lens vertex standard lens standardtestlensesforcalibrationoffocimetersused formeasuringcontactlenses Designed to measure the test contact lenses focimeter standard lenses. 3.3 After the vertex backvertexpower After the lens near the axis in meters measured at the top of the reciprocal of the focal length. After the lens vertex to the paraxial back focus distance is called Paraxial back vertex length (see Figure 1), the symbol l'f says its reciprocal called back vertex power, ie 1l'f . After the vertex The unit is the reciprocal meter (m-1). Note. a lens comprising front and rear two vertex. Such as not specified, the vertex of the lens mean a subsequent vertex. 3.4 standard spherical lenses standardsphericaltestlens Nearly axis parallel beam converges to a focus on the standard lens. 3.5 standard lenticular lens standardcylindricaltestlens Nearly parallel beam axis converge to two separate, mutually perpendicular focal line, different standards and spherical lenses, with There are two main standard lens vertex degree. One of the primary vertex may be zero, which corresponds to the focal line is located at infinity. ...