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JJF 1106-2003: Calibration Specification of Transmittance Measuring Equipment for Ophthalmic Products
JJF 1106-2003
Calibration Specification of Transmittance Measuring Equipment for Ophthalmic Products
National Metrology Technical Specifications of the People's Republic of China
Calibration specification for transmittance measuring device for glasses products
Released on.2003-06-13
2003-09-13 implementation
Issued by the General Administration of Quality Supervision, Inspection and Quarantine
Transmission ratio of glasses products
Calibration specification for measuring device
forOp
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on June 3,.2003, and has since been approved by the General Administration of Quality Supervision, Inspection and Quarantine.
It came into effect on September 13,.2003.
Focal point. National Optical Metrology Technical Committee
Drafting unit. China Institute of Metrology
The central unit is responsible for the interpretation of this specification
The main drafters of this specification.
Zhu Jianping (China Institute of Metrology)
Participating drafters.
Wang Liru (China Institute of Metrology)
Ma Zhenya (China Institute of Metrology)
table of Contents
1 range (1)
2 References (1)
3 Terms and units of measurement (1)
3.1 Glasses products(1)
3.2 Visible radiation(1)
3.3 Ultraviolet radiation(1)
3.4 Spectral transmittance τ(λ) (2)
3.5 Light transmittance τV (2)
3.6 Solar ultraviolet A-band transmittance τSUVA (2)
3.7 Solar ultraviolet B-band transmittance τSUVB (2)
3.8 Traffic signal transmittance τSIGN (2)
3.9 Relative visual attenuation factor Q (3)
4 Overview (3)
5 Measurement characteristics (3)
5.1 Measurement requirements (3)
5.2 Technical requirements for fast measuring devices (4)
6 Calibration conditions (4)
6.1 Environmental requirements (4)
6.2 Special standard lenses for spectacle transmittance (4)
7 Calibration items and calibration methods (5)
7.1 Special standard devices and spectrophotometers (5)
7.2 Fast measuring devices (5)
8 Calibration result expression (6)
9 Re-calibration interval (6)
Appendix A. Calculation data for visible light transmittance ratio (7)
Appendix B Calculation data used for solar ultraviolet transmittance ratio (9)
Appendix C Example of Analysis of Transmittance Indication Error Uncertainty (10)
Calibration specification for transmittance measuring device for glasses products
1 Scope
This specification is applicable to the calibration of transmittance measuring devices for glasses products of different principles and categories (including spectroscopy).
Photometer device).
2 References
ISO 13666.1998 Ophthalmicoptics-Spectaclelenses- Vocabulary
"Ophthalmology Optics-Spectacle Lenses-Terminology"
ISO 14889.2003 Ophthalmicoptics-Spectaclelenses- Fundamentalrequirementsfor
uncutfinishedlenses
"Ophthalmic Optics-Spectacle Lenses-Basic Requirements for Unrimmed Lenses"
ISO 8980.3.2003 Ophthalmicoptics- Uncutfinishedspectaclelenses-Part 3.Trans-
mittancespecificationsandtestmethods
"Ophthalmic Optics-Unrimmed Lenses-Part 3.Technical Specifications and Measurement Methods of Transmittance
law"
ISO 8599.1994 Opticsandopticalinstruments-Contactlenses-Determinationofthe
spectralandluminoustransmittance
"Optics and Optical Instruments-Contact Lenses-Spectral Transmittance and Optical Transmittance Measurement"
EN1836.1997 Personaleyeprotection-Sunglassandsunglarefiltersforgeneraluse
"Personal Eye Protection-General Purpose Sunglasses and Glare Filters"
ISO /CIE10526.1991 CIEstandardcolorimetriciluminants
"CIE Standard Chromaticity Light Source"
ISO /CIE10527.1991 CIEstandardcolorimetricobservers
"CIE Standard Chromaticity Observer"
When using this specification, you should pay attention to using the currently valid versions of the above cited documents.
3 Terms and units of measurement
3.1 Glasses products
Including spectacle lenses, glasses (including prescription lenses), sunglasses, contact lenses, etc.
3.2 Visible radiation
All light radiation that can directly cause visual induction, also known as visible light. The wavelength of visible light specified in ophthalmic optics
The range is (380~780)nm.
3.3 Ultraviolet radiation
Light radiation with a wavelength less than 380nm is also called ultraviolet light. Provisions in ophthalmic optics.
UV-A. (315~380)nm long wave ultraviolet;
UV-B. (280~315)nm medium wave ultraviolet;
UV-C. (200~280)nm short-wave ultraviolet.
3.4 Spectral transmittance τ(λ)
At any specified wavelength (λ), the ratio of the spectral radiant flux through the lens to the incident spectral radiant flux.
3.5 Light transmittance τV
The ratio of the luminous flux through the object to the incident luminous flux.
τV=∫
780nm
380nm
τ(λ)V(λ)SD65λ(λ)dλ
780nm
380nm
V(λ)SD65λ(λ)dλ
×100% (1)
In the formula. τ(λ)---see 3.4 for the definition;
V(λ)---average human eye spectral luminous efficiency function under sunlight (see Appendix A);
SD65λ(λ)---CIE standard light source D65's spectral distribution function (see Appendix A).
3.6 Solar ultraviolet A-band transmittance τSUVA
(315~380)nm spectral transmittance τ(λ) and the weighted average transmittance of ESλ(λ) and S(λ).
τSUVA=∫
380nm
315nm
τ(λ)ESλ(λ)S(λ)dλ
380nm
315nm
ESλ(λ)S(λ)dλ
×100% (2)
In the formula. τ(λ)---see 3.4 for the definition;
ESλ(λ)---the spectral power distribution function of solar radiation (see Appendix B);
S(λ)---The relative spectral light efficiency function of ultraviolet radiation (see Appendix B).
3.7 Solar ultraviolet B-band transmittance τSUVB
(280~315)nm spectral transmittance τ(λ) and the weighted average transmittance of ESλ(λ) and S(λ).
τSUVB=∫
315nm
280nm
τ(λ)ESλ(λ)S(λ)dλ
315nm
280nm
ESλ(λ)S(λ)dλ
×100% (3)
In the formula. τ(λ)---see 3.4 for the definition;
ESλ(λ) and S(λ)---For definition, see 3.6.
3.8 Traffic signal transmittance τSIGN
(380~780)nm spectral transmittance τ(λ) and the weighted average transmittance of τS(λ), V(λ) and SAλ(λ).
τSIGN=∫
780nm
380nm
τ(λ)τS(λ)V(λ)SAλ(λ)dλ
780nm
380nm
τS(λ)V(λ)SAλ(λ)dλ
×100% (4)
In the formula. τ(λ)---see 3.4 for the definition;
τS(λ)---Spectral transmittance of traffic signal color filters (red, yellow, green, blue) (see Appendix A);
V(λ)-see 3.5 for definition;
SAλ(λ)---CIE standard light source A's spectral distribution function (see Appendix A).
3.9 Relative visual attenuation factor Q
It is defined as the ratio of traffic signal transmittance τSIGN and light transmittance τV. Mainly used to evaluate eyewear products to identify traffic
Signal ability.
Q=τSIGNτV
(5)
In the formula. τV---see 3.5 for definition;
τSIGN---For definition, see 3.8.
4 overview
The transmittance measurement devices for glasses products can be divided into three categories.
The first category refers to the direct non-breaking of the transmittance index of the glasses products in the range of (280~780)nm.
A device for measuring badness (if spectacles do not need to be disassembled) (hereinafter referred to as special standard devices). The basic measurement principle
The reason is. first measure the spectral transmittance of the tested sample in the (280~780)nm band (visible light band sampling interval
No more than 10nm, and the sampling interval of the ultraviolet band does not exceed 5nm), using CIE standard light source D65 in the visible light band
The spectral distribution function and the human eye spectral luminous efficiency function obtain the visible light weighting function; use solar radiation in the ultraviolet band
The spectral power distribution function and the ultraviolet radiation relative spectral light efficiency function obtain the ultraviolet radiation weighting function. Finally after points
Obtain the light transmittance τV, solar ultraviolet A-band transmittance τSUVA and solar ultraviolet B-band transmittance of the tested sample, respectively
Three basic indicators than τSUVB. For spectacle products with special requirements (such as sunglasses, contact lenses, etc.), you should also
According to product characteristics, use the corresponding weighting function to process, and measure other related indicators (such as relative visual attenuation factor
Q etc.).
The second category (hereinafter referred to as the spectrophotometer category) refers to the use of a spectrophotometer to measure flat samples in accordance with the traditional method
Product [refers to a sample with a diopter of (0~±0.25)m-1 and a thickness of (2.0±0.1)mm] in (280~780)nm
Spectral transmittance in the band range (the sampling interval of the visible light band does not exceed 10nm, and the sampling interval of the ultraviolet band does not exceed
Over 5nm), and then perform the same weighted integration as the first type of device by manual or programmed calculation, and finally
Get τV, τSUVA, τSUVB and other related indicators.
The third category (hereinafter referred to as the rapid measurement device category) refers to the use of specific light sources and filters to obtain the ultraviolet band
(280~380)nm measuring beam, after irradiating the sample to be tested, directly measure the energy level of the transmitted beam, which can be fast
Quickly determine whether the transmittance of the sample in this waveband is zero.
5 Metrological characteristics
5.1 Measurement requirements
Suitable for special standard devices and spectrophotometers.
5.1.1 Wavelength range
At least (280~780)nm should be included and divided according to the following bands.
UV-B. (280~315)nm medium wave ultraviolet;
UV-A. (315~380)nm long wave ultraviolet;
V. (380~780)nm visible light.
5.1.2 Repeatability of transmittance measurement
The transmittance measurement repeatability of the measuring device used to issue fair data (such as product measurement and quality inspection) should not be
Greater than 1.5%.
The transmittance measurement repeatability of a measuring device for commercial use should not exceed 2%.
5.1.3 Transmittance indication error
The absolute value of the transmittance indication error of the measuring device used to issue fair data (such as product measurement and quality inspection)
The value should not be greater than 2%.
The absolute value of the indication error of the transmittance of the measuring device used for commercial purposes should not be greater than 3%.
5.1.4 Indication error of relative visual attenuation factor Q
Relative visual attenuation factor Q of measuring devices used to issue fair data (such as product measurement and quality inspection)
The absolute value of the indication error should not be greater than 0.02.
The absolute value of the indication error of the relative visual attenuation factor Q of the measuring device for commercial use should not be greater than
0.04.
5.2 Technical requirements for fast measuring devices
Fast measuring devices should be able to accurately determine the transmission of the tested glasses products in the ultraviolet band (280~380) nm
Whether the ratio is zero.
6 Calibration conditions
6.1 Environmental requirements
Temperature. (23±5)℃
Humidity. < 85%RH
6.2 Standard lenses for spectacles transmittance
The transmittance value of the special standard lens should be straight from the "National Measurement Standard Measuring Device for Central Transmittance of Spectacle Lens"
Traceability and delivery.
6.2.1 Central transmittance standard lens
It is used to calibrate the transmittance measurement repeatability, transmittance indication error and error of special standard devices and spectrophotometers.
Relative visual attenuation factor Q indicating error.
It consists of flat surface light, spherical surface light, 4m-1 spherical lens, -4m-1 spherical lens, 2m-1 cylindrical lens,
-2m-1 cylindrical lens, six colorless lenses and two 0m-1 colored lenses, a total of eight pieces. Six colorless lenses each
All have three standard transmittance values of τV, τSUVA and τSUVB; each of the two colored lenses has QR, QY, QG and
QB Four standard values of relative visual attenuation factors.
6.2.2 Planar transmittance standard lens
Only applicable to calibrate the transmittance measurement repeatability, transmittance indication error and relative visual attenuation of the spectrophotometer
Indication error of factor Q.
It is composed of four colorless lenses, two colorless lenses, two colorless lenses, and two 0m-1 colored lenses. Two
Each colorless lens has three standard transmittance values of τV, τSUVA and τSUVB; each of the two colored lenses has
The standard values of four relative visual attenuation factors, QR, QY, QG and QB.
6.2.3 Standard lens of fast measuring device
It is only suitable for calibrating fast measuring devices.
It is composed of two colorless lenses with a diopter of (0±2)m-1, and their UV-B band transmittance is less than 1%;
The UV-A waveband transmittance is. 4% and less than 1%.
7 Calibration items and calibration methods
7.1 Special standard devices and spectrophotometers
7.1.1 Wavelength range
According to the requirements of 5.1.1, run the calibrated device to perform a transmittance measurement, and check the waves given by the measurement results.
Does the long range include three wavebands. UV-B, UV-A and visible light.
7.1.2 Repeatability of transmittance measurement
7.1.2.1 Special standard device category. According to the requirements of 5.1.2, select the six colorless lenses in 6.2.1, each
3 less consecutive measurements, respectively, to obtain the measured transmittance value. Take the mirror with the largest difference in the 3 transmittance measurements
The range of the sheet is used as the repeatability of the device's transmittance measurement.
7.1.2.2 Spectrophotometers. According to the requirements of 5.1.2, use the flat and spherical surfaces in 6.2.1 or 6.2.2
Two standard flat lenses, each of which is measured at least 3 times continuously, using the measured spectral transmittance, manually or programmed
After calculation, the transmittance value is obt...