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JJF 1292-2024: Program of Pattern Evaluation of Focimeters
Status: Valid JJF 1292: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJF 1292-2024 | English | 699 |
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Program of Pattern Evaluation of Focimeters
| Valid |
JJF 1292-2024
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| JJF 1292-2011 | English | 919 |
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Program of Pattern Evaluation of Focimeters
| Obsolete |
JJF 1292-2011
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| JJF 1292-1990 | English | 199 |
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O.T.N. for Primary Standard of Induction
| Obsolete |
JJF 1292-1990
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Basic data | Standard ID | JJF 1292-2024 (JJF1292-2024) | | Description (Translated English) | Program of Pattern Evaluation of Focimeters | | Sector / Industry | Metrology & Measurement Industry Standard | | Word Count Estimation | 34,347 | | Date of Issue | 2024-06-14 | | Date of Implementation | 2024-12-14 | | Issuing agency(ies) | State Administration for Market Regulation | JJF 1292-2024: Program of Pattern Evaluation of Focimeters---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.
National Metrology Technical Specifications of the People's Republic of China
Lensmeter Type Evaluation Outline
Released on 2024-06-14
Implementation on 2024-12-14
The State Administration for Market Regulation issued
Lensmeter Type Evaluation Outline
of Focimeters
Replace JJF 1292-2011
Responsible unit. National Medical Metrology Technical Committee
Main drafting unit. China National Institute of Metrology
Participating in the drafting. Shandong Institute of Metrology
This standard is entrusted to the National Medical Metrology Technical Committee for interpretation
The main drafters of this specification are.
Sun Jie (China National Institute of Metrology)
Hong Baoyu (China National Institute of Metrology)
Li Jiao (China National Institute of Metrology)
Participating drafters.
Qin Xiaowen (Shandong Institute of Metrology)
Table of contents
Introduction (III)
1 Scope(1)
2 References(1)
3 Overview(1)
3.1 Purpose(1)
3.2 Measurement principle (1)
4 Legal management requirements (1)
4.1 Requirements for measurement units (1)
4.2 Logo(1)
5 Measurement requirements (2)
5.1 Zero indication error (2)
5.2 Spherical power indication error (2)
5.3 Cylindrical power indication error (2)
5.4 Nonlinear error (2)
5.5 Prism indication error (2)
5.6 Center error (3)
5.7 Axis marking deviation (3)
5.8 Deviation of lens optical center mark (3)
5.9 Parallelism deviation of adjustable baffle (3)
6 General technical requirements (3)
6.1 Appearance(3)
6.2 Mechanical structure (3)
6.3 Measuring range(4)
6.4 Printing Marks(4)
6.5 Parallax(4)
6.6 Support structure (4)
6.7 Climate and environmental adaptability (4)
6.8 Power supply environment adaptability (5)
7 Type Evaluation Items Table (5)
8.Provide the number of samples and how to use them (6)
8.1 Number of samples provided (6)
8.2 How to use the prototype (6)
9 Test methods and conditions for test items (6)
9.1 Preparation before the test (6)
9.2 Appearance(6)
9.3 Mechanical structure (6)
9.4 Measuring range(7)
9.5 Printing Marks(7)
9.6 Parallax(7)
9.7 Support structure (7)
9.8 Zero indication error (8)
9.9 Spherical power indication error (8)
9.10 Cylindrical power indication error (9)
9.11 Nonlinear error (9)
9.12 Prism indication error (10)
9.13 Center error (10)
9.14 Axis marking deviation (10)
9.15 Deviation of lens optical center mark (11)
9.16 Parallelism deviation of adjustable baffle (11)
9.17 Climate and environmental adaptability test (12)
9.18 Power supply environment adaptability test (13)
9.19 Determination of type evaluation results (13)
10 Table of measuring instruments and equipment used in test items (14)
11 Type evaluation record format (14)
Appendix A Lensmeter Type Evaluation Record Format (15)
Introduction
JJF 1016-2014 "Guidelines for the Preparation of Type Evaluation Outlines for Measuring Instruments", JJF 1015-2014 "Guidelines for the Preparation of Type Evaluation Outlines for Measuring Instruments"
The "General Specifications for Formulation Evaluation" together constitute a basic series of specifications supporting the revision of this specification.
This specification is based on JJG580-2005 "Focometer", JJG866-2008 "Vertex Power Standard Lenses",
JJG2090-1994 "Vertex Power Measuring Instrument Calibration System", JJF 1101-2019 "Environmental Test Equipment Temperature, Humidity
The calibration specifications for optical parameters and GB/T 17341-1998 Optics and Optical Instrument Lens Meters are used as the basis.
GB/T 14710-2009 "Environmental requirements and test methods for medical electrical appliances", revised JJF 1292-2011 "Type of focal meter"
Compared with JJF 1292-2011, this specification has the following major technical changes, in addition to editorial revisions.
The following.
--- In the scope, the classification code of the lens meter is added, and the term "used to guide product quality in the production process" is deleted.
Supervision and inspection";
--- In the referenced documents, delete GB 9706.1-2007 "Medical electrical equipment Part 1.Safety general
Requirements", JB/T 9329-1999 "Basic Environmental Conditions and Test Methods for Transportation and Storage of Instruments", adding
GB/T 14710-2009 "Environmental requirements and test methods for medical electrical appliances";
--- Delete the terms, symbols and codes;
--- According to JJF 1016-2014, the content of legal management requirements is modified;
--- In the general technical requirements, add climate and environmental adaptability and power supply environmental adaptability; delete safety requirements
Requirements, environmental adaptability requirements;
--- According to JJF 1016-2014, the contents of the type evaluation project table are modified;
--- According to JJF 1016-2014, the content of "the number of samples provided and the use of the samples" was added;
---Add climate and power environment adaptability to the test methods and conditions of type evaluation items.
The description of the test methods and conditions of the test items and conditions of the safety requirements and environmental adaptability requirements are deleted.
and conditions;
--- According to JJF 1016-2014, add the table of measuring instruments and equipment used in the test;
--- In Appendix A, delete the content of "focimeter type evaluation report format" and add "focimeter type evaluation report format"
Evaluation Record Format".
The previous versions of this specification are as follows.
---JJF 1292-2011.
Lensmeter Type Evaluation Outline
1 Scope
This specification applies to the type evaluation of various types of focal meters with classification code 33060000.
2 References
This specification references the following documents.
JJG580-2005 Focimeter
JJG866-2008 Vertex Standard Lenses
JJG2090-1994 Vertex power measurement instrument calibration system
JJF 1101-2019 Calibration specification for temperature and humidity parameters of environmental test equipment
GB/T 14710-2009 Environmental requirements and test methods for medical electrical appliances
GB/T 17341-1998 Optics and optical instruments - Lensmeters
For any referenced document with a date, only the version with the date is applicable to this specification; for any referenced document without a date,
The latest version (including all amendments) shall apply to this specification.
3 Overview
3.1 Purpose
Focimeters are mainly used to measure the vertex power and prism of eyeglass lenses (including contact lenses) and determine the cylinder power.
The lens can be checked to see whether the lens is correctly installed on the mirror.
In the rack.
3.2 Measurement principle
According to the measuring principle, the focimeter can be divided into the focimeter based on the manual focusing principle and the focimeter based on the automatic focusing principle.
The manual focusing principle of the focal meter is mainly composed of two parts. the observation system and the focusing system.
The observation system observes the target image formed by the light emitted from the focal meter light source passing through the lens to be tested and manually adjusts the focus.
After the standard image is clearly focused, the vertex value of the lens to be tested can be obtained according to the movement of the focusing system.
According to the structure of the observation system, meters can be divided into two types. visual type and projection type.
The autofocus principle focal meter is mainly composed of two parts. the optical system and the electronic measurement system.
The measurement system automatically analyzes and calculates the image data collected in the optical path of the optical system to obtain the top focal length of the lens to be tested.
Degree value.
4 Legal management requirements
4.1 Requirements for measurement units
The values of the focal meter should be measured in my country's legal units of measurement.
4.2 Logo
The focal meter should be marked with the metrological legal symbol and the measuring instrument mark on the nameplate, panel, body and other obvious parts of the instrument.
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