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GB 18143-2011: [GB/T 18143-2011] Ophthalmic instruments -- Trial frames
Status: Valid GB 18143: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 18143-2011 | English | 239 |
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[GB/T 18143-2011] Ophthalmic instruments -- Trial frames
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GB 18143-2011
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| GB 18143-2000 | English | 279 |
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Ophthalmic instrument-Trial frames
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PDF similar to GB 18143-2011
Basic data | Standard ID | GB 18143-2011 (GB18143-2011) | | Description (Translated English) | [GB/T 18143-2011] Ophthalmic instruments -- Trial frames | | Sector / Industry | National Standard | | Classification of Chinese Standard | C40 | | Classification of International Standard | 11.040.70 | | Word Count Estimation | 9,921 | | Date of Issue | 2011-10-31 | | Date of Implementation | 2012-08-01 | | Older Standard (superseded by this standard) | GB 18143-2000 | | Quoted Standard | GB/T 15464; GB 17342; GB/T 2828.1 | | Adopted Standard | ISO 12867-1998, MOD | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 15 of 2011 | | 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 Chinese standard specifies the installation audition refraction lens frame with the basic requirements and test methods. This standard applies to headband, bracket-style as well as temples and nose pads with glasses of various auditions proscenium frame. This standard does not apply to integrated refractometer. | GB 18143-2011: [GB/T 18143-2011] Ophthalmic instruments -- Trial frames---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.
Ophthalmic instruments.Trial frames
ICS 11.040.70
C40
National Standards of People's Republic of China
Replacing GB 18143-2000
Ophthalmic instruments trial frame
(ISO 12867.1998, MOD)
Issued on. 2011-10-31
2012-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 Requirements 1
5 Test Method 3
6 Inspection Rule 4
7 signs, packaging, transportation and storage 4
Foreword
4.2.6 ~ 4.2.9 of this standard are mandatory, the remaining technical content are recommended.
This revised standard adopts ISO 12867.1998 "ophthalmic instruments frames", and ISO 12867.1998 technical differences are as follows.
--- Deleted the Chapter 3 of the full aperture trial frame trial frame and narrow definition of the aperture;
--- The trial frame into IPD IPD adjustable trial frame and the fixed frame, put forward different requirements of IPD in Table 1;
--- Deleted the temple should be kept perpendicular to the provisions of refraction of the lens plane, increasing the adjustable temple length requirements;
--- Remove the parallel requirements frame geometric axis;
--- Remove the concentric provisions lens optical axis and the geometrical axis of the frame;
--- Increasing the requirements and test methods trial frame IPD value error;
--- Inspection rules given under the provisions of GB/T 2828.1 of;
--- According to GB/T 15464 increased the number of trial frame labeling, packaging, transportation and storage requirements.
This standard replaces GB 18143-2000 "ophthalmic instruments frame," this standard and GB 17342 "ophthalmic instruments refraction lens" complementary
use.
This standard compared with GB 18143-2000 main changes are as follows.
--- Deleted the Chapter 3 of the full aperture trial frame trial frame and narrow definition of the aperture;
--- The trial frame into IPD IPD adjustable trial frame and the fixed frame, put forward different requirements of IPD in Table 1;
--- Deleted the temple should be kept perpendicular to the provisions of refraction of the lens plane, increasing the adjustable temple length requirements;
--- Remove the parallel requirements frame geometric axis;
--- Remove the concentric provisions lens optical axis and the geometrical axis of the frame;
--- Increasing the requirements and test methods trial frame IPD value error;
--- Under the new release of GB/T 2828.1 gives a new inspection rules.
The standard proposed by China Machinery Industry Federation.
This standard by the National Standardization Technical Committee Optics and optical instruments - Optical glasses Technical Committee (SAC/TC103/SC3)
Centralized.
This standard was drafted. China Institute of Metrology, Shandong Institute of Metrology.
The main drafters of this standard. Zhu Jianping, Sun Jie, Li Fei, Ren Hongwei.
This standard replaces the standards previously issued as follows.
--- GB 18143-2000.
Ophthalmic instruments trial frame
1 Scope
This standard specifies the basic requirements and test methods for installing refraction lenses audition frame.
This standard applies to the headband, and a bracket-style glasses with temples and nose pads proscenium types of trial frames.
This standard does not apply to integrated refractometer.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 15464 instrumentation packaging technology
GB 17342 refraction lens (GB 17342-1998, eqvISO 9801.1997)
GB/T 2828.1 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch inspection sampling plan
(GB/T 2828.1-2003, ISO 2859-1.1999, IDT)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Trial frame trialframes
Frame composed by two linked, can make the necessary refraction lens positioned in front of the examinee.
3.2
Semi-eye trial frame half-eyetrialframes
Refraction lens can be installed, and with only a portion of the frame trial frame.
3.3
Frame lensholder
Audition shelves can be installed several refraction lens, and positioning in front of the examinee's part.
3.4
Nose pads bridgepiece
Audition shelves and measured by contacting nose portions play a supportive role.
3.5
Temple side
Audition rack ear hook to keep the part of the person under test trial frame in contact with the cheek.
4 Requirements
4.1 General requirements
All kinds of trial frame used at room temperature, shall meet the requirements of 4.2 to 4.3, 5.1 to 5.5 according to the method of testing.
Trial frame glasses frame style temples and nose pads must have two basic components.
4.2 Mechanical Requirements
4.2.1 Frame
Each frame should refraction lens with three slots, each having a refraction lens space on the partition frame geometrical axis.
4.2.2 IPD
4.2.2.1 IPD adjustable frame
IPD within a certain range, the center distance between two consecutive frames adjustable to ensure refraction of the lens from the geometric center of the IPD and consistent.
4.2.2.2 Fixed IPD trial frame
From the center of the frame is fixed even number two. Typically it sets, to meet the different needs of IPD.
4.2.3 refraction lens rotation
Optometry lenses in each frame to be capable of smooth rotation around the optical axis 180 ° (not including the progressive lens dedicated to the trial frame).
4.2.4 temple
Temple length shall be adjusted to ensure correct positioning of the lenses optometry in front of the examinee.
4.2.5 nose pads
Nose pads should ensure vertex distance refraction lens and the human eye is adjustable, and the geometric center of the lens optometry can go up according to the connection of the human eye pupil
Or decreased.
4.2.6 Axial scale
It shall be provided with cylinder axial and prism base on the scale trial frame of the frame with a scale of at least 180 °. Scale value should be counter-clockwise
To increase its minimum scale should not exceed 5 °.
Engraved straight line should be uniform, no Duanzhe, no edges.
4.2.7 Frame alignment
After refraction lens mount frame, two refraction lens optical axis parallelism deviation should not exceed 2.5 °. Two frame plane contour mutual differences
It should not be greater than 0.5mm.
4.2.8 Dimensions and Tolerances
Table 1 shows the range of IPD trial frame and the minimum aperture size.
Table 1 IPD range and minimum aperture
project
Ordinary trial frame half-eye trial frame
IPD IPD adjustable fixed adjustable fixed type IPD IPD formula
IPD range 55mm ~ 75mm fixed integer 59mm ~ 67mm fixed integer
Minimum aperture 20mm
Note. This table does not include the IPD range of children audition frame.
IPD deviation trial frame within a predetermined range of IPD provided not more than 1mm. Refraction lens relative to the geometric center of the cross
And axial displacement shall not exceed 0.3mm.
4.2.9 Structure
Trial frame surface should be smooth, it can not be measured with any possible harm caused by sharp corners and sharp edges.
4.3 Material
Trial frame direct contact with the skin test subject member, should strictly prohibit the use of toxic substances, or can directly cause allergic skin reaction
material.
Making trial frame material must not contain any corrosive elements, or through appropriate surface treatment to ensure that the environment does not occur at room temperature
corrosion.
5 test methods
5.1 Mechanical testing requirements
4.2.1 ~ 4.2.6 this standard content and are used as defined in 4.2.9 and visual inspection methods manually.
Parallel to the optical axis of the inspection 5.2
After refraction lens mount frame, parallel to the optical axis of the two refraction lenses can be tested with reference to FIG. 1 Autocollimation.
1, the trial frame securely fixed on the table, the two plane mirror (M), respectively, into the frame, the frame at the audition
Placed in front of a measuring accuracy of less than ± 0.5 ° self-collimating telescope. Lateral movement along the vertical axis from the geometry of the frame in a direction
Collimating telescope, respectively from the read reflected image of the two mirrors, obtain their mutual displacement deviation. Converted into the displacement deviation angle
After obtain refraction lens optical axis parallel to the bias, should meet the requirements of 4.2.7.
Figure 1 schematic test Autocollimation
The difference between each frame plane contour inspection 5.3
The use of a special frame member testable two planar contour mutual differences.
As shown in Figure 1, and other thick plate (A) which consists of a member integral with the link arms. Link arm length is known, with one end connected to a vertical plate
Then the other end to a plane parallel to the plate. The length of the plate should be greater than two frames away from the center of the trial frame.
The trial frame with a holder fixed to the platform, to ensure that one of the vertical frame and platform (hereinafter referred to as the frame of the frame 1). select
Mirror two of the same thickness were inserted in two frames. The special part is placed on the platform to ensure flat and perpendicular to the platform, and even
One end of the frame plane lever arm 1 within the plane mirror full contact, to ensure that the plane mirror and parallel plates. Due to the thickness and plane mirror link
Arm length is known, it is possible to determine the distance between the plane mirror frame 1 to the inner surface of the bottom surface of the plate. By dividing the value of not less than 0.1mm
Vernier caliper additional distance plate on the bottom surface of a flat mirror surface to the inner frame, the frame is the difference between the two distance plane contour mutual
Poor, and its value should be consistent with the provisions of 4.2.7.
IPD range of 5.4 and a minimum aperture of test
Use division value of not less than 0.1mm vernier caliper, its value should meet the requirements in Table 1.
IPD error may refer to the following test methods.
The trial frame IPD adjusted to the desired position, the two concentric well cross two pieces were put into the frame trial frame, the measurement
Two pieces from the center of the cross, is the actual trial frame IPD value, the deviation from the nominal value of the IPD should be consistent with the provisions of 4.2.8.
5.5 lateral and axial displacement test
Select the appropriate lens put in the frame, with the division value of not less than 0.1mm vernier caliper, lateral and axial displacement of the lens, respectively,
Measured, and its value should be consistent with the provisions of 4.2.8.
6 Inspection rules
6.1 Inspection Rules
Products manufactured according to the technical requirements of this standard itemized inspection or acceptance. With a specification of the products delivered by the same test
After passing the measured parameters and classification of this standard, as the same kind of specification of the same batch of products.
6.2 inspection or sampling level
Bulk products manufactured according to the general inspection level GB/T 2828.1 of Ⅱ, AQL of 4.0 for acceptance or sampling, acceptable quality level
Table 2.
Table 2 acceptable quality level (AQL = 4.0)
Bulk products range
Sampling Sample size
Acceptance number
Ac
Failed to determine the number of
Re
2 ~ 25301
26 ~ 901 312
91 ~ 1502023
6.3 pairs of special requirements, according to the requirements of both supply and demand agreement separately.
7 signs, packaging, transportation and storage
7.1 logo and packaging
7.1.1 trial frame proper packaging.
7.1.2 The following information shall be marked on the package.
a) the manufacturer's name and address;
b) trial frame the brand and type;
c) serial number.
7.1.3 should be within the box with the following relevant information.
a) Description With the casting frame;
b) an effective method of disinfection trial frame, and the need to return to the manufacturer for repair or maintenance instructions;
c) implementation of the standard code.
7.2 trial frame overpack shall comply with GB/T 15464 of.
7.3 transport should be light light disposal to avoid the collision, rain and damp.
7.4 Storage should pay attention to ventilation dry to prevent moisture.
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