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GB 39552.1-2020: Sunglasses and sunglare filters -- Part 1: General requirements
GB 39552.1-2020
Sunglasses and sunglare filters - Part 1.General requirements
ICS 11.040.70
Y89
National Standards of People's Republic of China
Sunglasses and Sunglass Lenses Part 1.General Requirements
(ISO 12312-1.2013,Eyeandfaceprotection-Sunglassesandrelatedeyewear-
2020-11-17 released
2021-12-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Structure and materials 1
5 Transmittance 2
6 Optical characteristics 5
7 Fatigue strength of sunglasses 5
8 Deformation of the bridge of the nose and lens holding force 5
9 Resistance to light radiation 6
10 Flame resistance 6
11 Coating layer performance 6
12 Sunglass lens size 7
13 Impact resistance 7
14 Wear resistance 7
15 Nickel precipitation 7
16 Selection of test samples 8
17 Marking, packaging, transportation and storage 10
Appendix A (informative appendix) This part and ISO 12312-1.2013 chapter number comparison list 13
Appendix B (informative appendix) Instructions for the use of sunglasses 14
Sunglasses and Sunglass Lenses Part 1.General Requirements
1 Scope
This part of GB/T 39552 specifies the classification, requirements, test sample selection, marking and packaging of flat sunglasses and sunglasses lenses.
This section applies to general-purpose (such as road and driving) sunglasses, sunglasses lenses, sunglasses clips and lens sets. Prescription corrective sunglasses and
Refer to this section for the transmittance requirements of sunglass lenses.
This part does not apply to lenses that protect against artificial light sources (such as light sources used in solariums) and goggles for industrial use.
It is not suitable for special lenses that can directly observe the sun (such as observing solar eclipses, etc.).
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB 10810.1 Spectacle lenses Part 1.Single vision and multifocal lenses (GB 10810.1-2005, ISO 8980-1.2004,
MOD)
GB 10810.5 Spectacle Lenses Part 5.Requirements for Surface Wear Resistance of Lenses (GB 10810.5-2012, ISO 8980-5.2005,
MOD)
GB/T 14214-2019 General requirements and test methods for spectacle frames (ISO 12870.2016, MOD)
GB/T 26397 Ophthalmic Optics Terminology (GB/T 26397-2011, ISO 13666.1998, MOD)
GB/T 39552.2-2020 Sunglasses and Sunglass Lenses Part 2.Test Methods (ISO 12311.2013, NEQ)
ISO 12311.2013 Test methods for personal protective equipment sunglasses and related products (Personalprotective
equipment-Testmethodforsunglassandrelatedeyewear)
3 Terms and definitions
The following terms and definitions defined in GB/T 26397 apply to this document.
3.1
Lensfractured
When the lens has one of the following conditions, it is called lens fragmentation.
a) The lens is split into two or more pieces;
b) There are fragments falling off the near-eye surface of the lens;
c) The lens is directly penetrated.
3.2
Eccentric sunglasses decentredsunglasses
Sunglasses designed to eliminate the prism effect caused by the base curve of the lens.
4 Structure and materials
4.1 Structure
The part of sunglasses (including frames and lenses) that is easy to contact with the wearer's skin should be smooth, and there should be no protrusions (or protrusions) that may harm the human body.
point).
5.2 The uniformity of transmittance (excluding the change in light transmittance caused by the thickness change caused by the lens design)
5.2.1 Sunglass lenses
The uniformity (ΔF) of the light transmittance of the sunglasses should meet.
a) Class 0~3 lenses. ΔF≤10%;
b) Type 4 lenses. ΔF≤20%.
The inspection shall be carried out in accordance with the method specified in 6.4.1 of GB/T 39552.2-2020.
5.2.2 Sunglasses and binocular lenses
The uniformity (Δp) of light transmittance of sunglasses and unmounted binocular lenses should not be greater than 15%.
The inspection shall be carried out in accordance with the method specified in 6.4.2 of GB/T 39552.2-2020.
5.3 Sunglasses for road and driving
5.3.1 Sunglasses for road and driving should be category 0, category 1, category 2 or category 3 sunglasses.
5.3.2 In the 475nm~650nm band, the spectral transmittance should not be less than 0.2τV.
5.3.3 For traffic signal recognition of category 0 to category 3 sunglasses, the relative visual attenuation factor (Q) should meet.
---Red≥0.80;
---Yellow≥0.60;
---Blue≥0.60;
---Green ≥ 0.60.
5.3.4 Sunglasses used for driving at dawn, dusk and evening should meet.
a) The light transmittance should not be less than 75%;
b) After the photochromic lens is tested under the conditions specified in 6.12 of GB/T 39552.2-2020, its light transmittance should not be less than 75%.
5.4 Scattered light
The haze value of the scattered light should not be greater than 3%, and the inspection should be carried out according to the method specified in 6.10 of GB/T 39552.2-2020.
Note. This article does not apply to prescription corrective sunglasses and sunglasses.
5.5 Requirements for special transmittance
5.5.1 Photochromic lenses
The light transmittance of the photochromic lens in the faded state τV(0) and the light transmittance of the photochromic lens in the discolored state τV(15) after 15min of light
The ratio between should not be less than 1.25, that is, τV(0)/τV(15)≥1.25, and the inspection should be carried out according to the method specified in 6.12 of GB/T 39552.2-2020
Test. It can also be tested according to other temperatures or irradiation intensity provided by the manufacturer, but relevant technical information should be provided.
5.5.2 Polarized lenses and polarized sunglasses
The deviation between the transmission plane of the polarizing lens and the vertical direction or the indicated direction should not exceed ±5°; the difference between the transmission plane of the left and right lenses of the sunglasses should be no more than ±5°.
The difference between them should not be greater than 6°.
For sunglasses, the clip should be clamped on the frame, and the polarization deviation should be measured at the wearing position.
For Class 2, Class 3, and Class 4 polarizing lenses, when tested in accordance with the method specified in 7.10.2 of ISO 12311.2013, the polarization effect
The rate should be greater than 78%, and should be greater than 60% for class 1 polarizing lenses. Class 0 lenses do not have any useful polarization effects.
5.6 Express requirements for transmittance
5.6.1 Blue light absorption and transmittance
5.6.1.1 Blue light absorption rate
When the blue light absorption rate of sunglasses and sunglasses is x%, the solar blue light transmittance τsb should not be greater than (100.5-x)%.
5.6.1.2 Blue light transmittance
When the blue light transmittance of sunglasses and sunglass lenses is less than x%, the solar blue light transmittance τsb should not be greater than (x 0.5)%.
5.6.2 Absorbance and transmittance of ultraviolet spectrum
5.6.2.1 UV absorption rate
When sunglasses and sunglass lenses indicate that their UV absorption rate is x%, their solar UV transmittance τSUV should not be greater than (100.5-x)%.
5.6.2.2 UV transmittance
When sunglasses and sunglass lenses clearly indicate that the ultraviolet transmittance is less than x%, the solar ultraviolet transmittance τSUV should not be greater than (x 0.5)%.
5.6.2.3 Absorption rate of ultraviolet A band
When sunglasses and sunglass lenses indicate that the UV A band absorption rate is x%, the solar UV A band transmittance τSUVA should not be large
于(100.5-x)%.
5.6.2.4 Ultraviolet A-band transmittance
When sunglasses and sunglasses clearly indicate that the ultraviolet A-band transmittance is less than x%, the solar ultraviolet A-band transmittance τSUVA should not be
Greater than (x 0.5)%.
5.6.2.5 Ultraviolet B band absorption rate
When sunglasses and sunglass lenses indicate that the ultraviolet B band absorption rate is x%, the solar ultraviolet B band transmittance τSUVB should not be greater than
(100.5-x)%.
5.6.2.6 Ultraviolet B-band transmittance
When sunglasses and sunglasses clearly indicate that the ultraviolet B-band transmittance is less than x%, the solar ultraviolet B-band transmittance τSUVB should not be large
In (x 0.5)%.
5.6.2.7 UV cut-off wavelength
When sunglasses and sunglass lenses express their UV resistance at the cut-off wavelength, the solar spectral transmittance τ(λ) below the cut-off wavelength
Should not be more than 2%.
5.6.3 Sunglasses with anti-reflection treatment
If the sunglasses and sunglasses are expressly treated with anti-reflection treatment, the light reflectance ρV of the lens measured from the near-eye surface should be less than 2.5%.
5.6.4 Solar infrared spectrum transmittance
If the sunglasses and sunglasses clearly have infrared protection function, the solar infrared spectrum transmittance τSIR should meet the requirements of Table 1.
11.1.2 If the spectacle frame is made of natural organic materials, and the manufacturer recommends using grease or wax for maintenance in the instructions for use, it should be
According to instructions, it is required to prepare grease or wax before the test. When the test is over, the surface of the frame is discolored or the surface degradation does not meet the requirements, use grease or wax
The surface of the frame is pre-treated with wax, and the surface is checked for discoloration or surface degradation after one day. If the frame is restored to its original state, it is judged
The frame passes the test; if there is still discoloration or degradation, the frame is judged to fail the test.
11.2 Coating bond strength
For spectacle frames with a surface coating layer (such as electroplating layer, organic film layer) on the temples, follow the method specified in 8.5 of GB/T 14214-2019
After the test is carried out, after one side of the test is carried out, there should be no peeling off of the coating layer.
12 Sunglass lens size
Sunglasses should cover two ellipses, the horizontal dimension of the ellipse is not less than 40mm, and the vertical dimension is not less than 28mm. Its level
The center distance is 64mm, symmetrical on both sides of the center of the nose bridge of the frame.
Sunglasses specially designed for children should cover two ellipses, the horizontal size of the ellipse is not less than 34mm, and the vertical size is not less than
24mm. The horizontal center distance is 54mm, which is symmetrical to both sides of the center of the nose bridge of the frame.
It can also be measured according to the horizontal center distance determined by the manufacturer according to the technical information provided by the manufacturer.
13 Impact resistance
13.1 Express impact strength level 1 (16g drop ball test)
If the sunglasses or sunglass lenses are clearly impact resistant (impact resistance level 1) or are not marked "cannot be used to protect the eyes from mechanical
"Injury" indicates that the inspection should be carried out in accordance with the methods specified in 8.6.2 and 8.6.3 of GB/T 39552.2-2020, and there should be no lens fragmentation.
13.2 Express impact strength level 2 (43g drop ball test)
If the sunglasses or sunglass lenses are clearly shown to have impact resistance level 2, follow the method specified in 8.6.4 of GB/T 39552.2-2020.
Inspection is performed, and the lens should not be broken.
13.3 Express impact strength level 3 (high-speed particle impact test)
If the sunglasses or sunglass lenses have an impact resistance level 3, follow the method specified in 8.6.5 of GB/T 39552.2-2020.
Inspection is performed, and the lens should not be broken.
14 Wear resistance
If sunglasses or sunglass lenses express wear resistance, the lenses should meet the minimum wear resistance requirements in GB 10810.5.
15 Nickel precipitation
If the customer requires or the product clearly indicates that the amount of nickel precipitation meets the standard requirements, the amount of nickel precipitation in the metal part that is in direct contact with the wearer’s skin should be
Not more than 0.5μg/(cm2·week).
Appendix B
(Informative appendix)
Instructions for use of sunglasses
B.1 Day
Sunglass lenses are mainly used to protect human eyes from excessive sunlight, reduce visual fatigue, and improve visual ability. Choice of sunglasses
It depends on the intensity of the surrounding light and the sensitivity of each person to glare. If in doubt, consult a professional ophthalmologist.
In addition to reducing the glare, sunglasses can also avoid the damage of ultraviolet rays to human eyes.
Warning. This section does not apply to special lenses that can directly observe the sun (such as observing solar eclipses, etc.).
B.2 Decreased light
As the light diminishes, the light-sensitive ability of the sun lens will also decrease. The darker the lens color, the smaller the light transmittance of the sunglass lens, and the better its visibility
Difference. Sunglass lenses with a light transmittance of less than 75% are not suitable for use in dim light. For meeting GB/T 39552.2-2020
The photochromic lens specified in 6.12 can be used when the light is dim if the light transmittance in the darkened state is greater than 75%.
B.3 Photochromic Sunglass Lenses
Since the light transmittance of photochromic sunglasses depends on the intensity of light radiation, temperature and other factors, the light of the lens may appear.
Special cases where the transmittance does not conform to its classification range, these special cases include.
a) In a low temperature environment (such as winter), the transmittance τV of the lens will decrease;
b) In high temperature environments (such as midsummer, tropical areas), the transmittance τV of the lens will increase;
c) In a weak radiation environment (such as when driving a car), the transmittance τV of the lens will increase.
B.4 Blue li...