GB/T 7247.1-2024 English PDF (GB/T7247.1-2024)

GB/T 7247.1-2024: Safety of laser products - Part 1: Equipment classification and requirements
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GB/T 7247.1-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 31.260
CCS L 51
GB/T 7247.1-2024 / IEC 60825-1.2014
Replacing GB 7247.1-2012
Safety of Laser Products – Part 1.Equipment Classification
and Requirements
(IEC 60825-1.2014, IDT)
ISSUED ON. SEPTEMBER 29, 2024
IMPLEMENTED ON. APRIL 1, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
Introduction... 7
1 Scope... 10
2 Normative References... 12
3 Terms and Definitions... 12
4 Classification Principles... 30
4.1 General... 30
4.2 Classification responsibilities... 30
4.3 Classification rules... 30
4.4 Laser products designed to function as conventional lamps... 37
5 Determination of the Accessible Emission Level and Product Classification... 38
5.1 Tests... 38
5.2 Measurement of laser radiation... 39
5.3 Determination of the class of the laser product... 40
5.4 Measurement geometry... 52
6 Engineering Specifications... 57
6.1 General remarks and modifications... 57
6.2 Protective housing... 58
6.3 Access panels and safety interlocks... 58
6.4 Remote interlock connector... 60
6.5 Manual reset... 60
6.6 Key control... 60
6.7 Laser radiation emission warning... 60
6.8 Beam stop or attenuator... 61
6.9 Controls... 61
6.10 Viewing optics... 61
6.11 Scanning safeguard... 61
6.12 Safeguard for Class 1C products... 62
6.13 "Walk-in" access... 62
6.14 Environmental conditions... 62
6.15 Protection against other hazards... 63
6.16 Power limiting circuit... 63
7 Labelling... 64
7.1 General... 64
7.2 Class 1 and Class 1M... 66
7.3 Class 1C... 67
7.4 Class 2 and Class 2M... 68
7.5 Class 3R... 69
7.6 Class 3B... 70
7.7 Class 4... 70
7.8 Aperture label... 71
7.9 Radiation output and standards information... 71
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This Document is Part 1 of GB/T 7247 Safety of Laser Products. GB/T 7247 consists of the
following parts.
--- Part 1.Equipment classification and requirements;
--- Part 2.Safety of optical fiber communication systems (OFCS);
--- Part 3.Guidance for laser display and shows;
--- Part 4.Laser shields;
--- Part 5.Manufacturer’s checklist for GB/T 7247.1;
--- Part 9.Maximum allowable exposure to incoherent optical radiation;
--- Part 13.Measurements for classification of laser products;
--- Part 14.A users guide.
This Document replaces GB 7247.1-2012 Safety of Laser Products – Part 1.Equipment
Classification and Requirements. Compared with GB 7247.1-2012, this Document has the
major technical changes as follows besides the structural adjustments and editorial
modifications.
--- Add the provisions on the applicability of vacuum ultraviolet wavelength, temporary
visual impairment caused by laser radiation, and laser products designed for traditional
lighting (see Clause 1 of this Edition);
--- Delete the terms and definitions. α minimum value, protective enclosure (see 3.5 and
3.65 of the 2012 Edition);
--- Add the terms and definitions. angle of subtend, Class 1C laser products, contact mode,
eye safety (see 3.6, 3.19, 3.27 and 3.37 of this Edition);
--- Change the terms and definitions. angular subtense of the apparent source, apparent
source, beam diameter, beam divergence, Classes 3R and 3B laser products, Class 4 laser
products, demonstration laser products, embedded laser products, emission duration,
extended source observation, fail-safe safety interlock, beam internal view, laser hazard
zone, maximum angle of subtend, maximum allowable exposure, protective cover (see
3.7, 3.10, 3.13, 3.14, 3.23, 3.24, 3.30, 3.32, 3.33, 3.36, 3.39, 3.42, 3.47, 3.57, 3.59 and
3.68 of this Edition; 3.7, 3.10, 3.13, 3.14, 3.22, 3.23, 3.28, 3.30, 3.33, 3.34, 3.36, 3.39,
3.44, 3.54, 3.56 and 3.66 of the 2012 Edition);
--- Change classification to classification rules and change the content (see Clause 4 of this
Edition; Clause 8 of the 2012 Edition);
--- Change determination of achievable emission levels to determination of achievable
emission levels and product classification; and change the content (see Clause 5 of this
Edition; Clause 9 of the 2012 Edition);
--- Change the requirements to engineering protection requirements and change the content
(see Clause 6 of this Edition; Clause 4 of the 2012 Edition);
--- Change the marking content (see Clause 7 of this Edition; Clause 5 of the 2012 Edition);
--- Change the content of user information (see Clause 8 of this Edition; Clause 6 of the
2012 Edition).
This Document equivalently adopts IEC 60825-1.2014 Safety of Laser Products – Part 1.
Equipment Classification and Requirements.
This Document made the following minimum editorial modifications.
--- Incorporate the interpretation contents of IEC 60825-1.2014/ISH1.2017 and IEC 60825-
1.2014/ISH2.2017 as informative appendix NA “Interpretation of Relevant Parts of IEC
60825”.
Please note some contents of this Document may involve patents. The issuing agency of this
Document shall not assume the responsibility to identify these patents.
This Document was proposed by China Machinery Industry Federation.
This Document shall be under the jurisdiction of National Technical Committee on Optical
Radiation Safety and Laser Equipment of Standardization Administration of China (SAC/TC
284).
Drafting organizations of this Document. Aerospace Information Research Institute, Chinese
Academy of Sciences; Beijing University of Technology; Norla Institute of Technical Physics;
the 11th Research Institute of China Electronics Technology Group Corporation; Beijing TIRT
Technology Service Co., Ltd.; National Institute of Metrology, China; Academy of Military
Medical Sciences; China Electronics Standardization Institute; Han’s Laser Technology
Industry Group Co., Ltd.; Wuhan Huagong Laser Engineering Co., Ltd.; Zhejiang Institute of
Medical Device Testing; Zhijiang Lab; Shanghai Hesai Technology Co., Ltd.; and Institute of
Biomedical Engineering, Chinese Academy of Medical Sciences.
Chief drafting staffs of this Document. Wu Aiping, Chen Hong, Ye Dahua, Qi Yan, Gao
Hongwei, Deng Yuqiang, Yang Zaifu, Liu Yunzhu, Zeng Lixia, Zhou Xiaozhuang, Du Kun, Li
Min, Ma Yunfeng, Yang Xuebo, Qiao Bo, Meng Ying, Yang Hua, Pu Jiangbo, Cheng Wang,
Liao Lifen, Feng Jianguo, and Li Ting.
Safety of Laser Products – Part 1.Equipment Classification
and Requirements
1 Scope
This Document is applicable to safety of laser products emitting laser radiation in the
wavelength range 180 nm to 1 mm.
Although lasers exist which emit at wavelengths less than 180 nm (within the vacuum
ultraviolet), these are not included in the scope of the Document since the laser beam normally
has to be enclosed in an evacuated enclosure, and, therefore, the potential optical radiation
hazards are inherently minimal.
A laser product may consist of a single laser with or without a separate power supply or may
incorporate one or more lasers in a complex optical, electrical, or mechanical system. Typically,
laser products are used for demonstration of physical and optical phenomena, materials
processing, data reading and storage, transmission and display of information, etc. Such
systems have found use in industry, business, entertainment, research, education, medicine and
consumer products.
Laser products that are sold to other manufacturers for use as components of any system for
subsequent sales are not subject to this Document, since the final product will itself be subject
to this standard. Laser products that are sold by or for manufacturers of end products for use as
repair parts for the end products are also not subject to this Document. However, if the laser
system within the laser product is operable when removed from the end product, the
requirements of this Document apply to the removable laser system.
NOTE 1.Operable equipment does not require a tool to prepare for operation.
Any laser product is exempt from all further requirements of this Document if classification by
the manufacturer of that product according to Clauses 4 and 5 shows that the emission level
does not exceed the AEL (accessible emission limit) of Class 1 under all conditions of operation,
maintenance, service and failure. Such a laser product may be referred to as an exempt laser
product.
NOTE 2.The above exemption is to ensure that inherently safe laser products are exempt from Clauses
6, 7, 8 and 9.
In addition to the adverse effects potentially resulting from exposure to laser radiation, some
laser equipment may also have other associated hazards, such as electricity, chemicals and high
or low temperatures. Laser radiation may cause temporary visual impairment, such as dazzle
GB/T 7247.1-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 31.260
CCS L 51
GB/T 7247.1-2024 / IEC 60825-1.2014
Replacing GB 7247.1-2012
Safety of Laser Products – Part 1.Equipment Classification
and Requirements
(IEC 60825-1.2014, IDT)
ISSUED ON. SEPTEMBER 29, 2024
IMPLEMENTED ON. APRIL 1, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
Introduction... 7
1 Scope... 10
2 Normative References... 12
3 Terms and Definitions... 12
4 Classification Principles... 30
4.1 General... 30
4.2 Classification responsibilities... 30
4.3 Classification rules... 30
4.4 Laser products designed to function as conventional lamps... 37
5 Determination of the Accessible Emission Level and Product Classification... 38
5.1 Tests... 38
5.2 Measurement of laser radiation... 39
5.3 Determination of the class of the laser product... 40
5.4 Measurement geometry... 52
6 Engineering Specifications... 57
6.1 General remarks and modifications... 57
6.2 Protective housing... 58
6.3 Access panels and safety interlocks... 58
6.4 Remote interlock connector... 60
6.5 Manual reset... 60
6.6 Key control... 60
6.7 Laser radiation emission warning... 60
6.8 Beam stop or attenuator... 61
6.9 Controls... 61
6.10 Viewing optics... 61
6.11 Scanning safeguard... 61
6.12 Safeguard for Class 1C products... 62
6.13 "Walk-in" access... 62
6.14 Environmental conditions... 62
6.15 Protection against other hazards... 63
6.16 Power limiting circuit... 63
7 Labelling... 64
7.1 General... 64
7.2 Class 1 and Class 1M... 66
7.3 Class 1C... 67
7.4 Class 2 and Class 2M... 68
7.5 Class 3R... 69
7.6 Class 3B... 70
7.7 Class 4... 70
7.8 Aperture label... 71
7.9 Radiation output and standards information... 71
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This Document is Part 1 of GB/T 7247 Safety of Laser Products. GB/T 7247 consists of the
following parts.
--- Part 1.Equipment classification and requirements;
--- Part 2.Safety of optical fiber communication systems (OFCS);
--- Part 3.Guidance for laser display and shows;
--- Part 4.Laser shields;
--- Part 5.Manufacturer’s checklist for GB/T 7247.1;
--- Part 9.Maximum allowable exposure to incoherent optical radiation;
--- Part 13.Measurements for classification of laser products;
--- Part 14.A users guide.
This Document replaces GB 7247.1-2012 Safety of Laser Products – Part 1.Equipment
Classification and Requirements. Compared with GB 7247.1-2012, this Document has the
major technical changes as follows besides the structural adjustments and editorial
modifications.
--- Add the provisions on the applicability of vacuum ultraviolet wavelength, temporary
visual impairment caused by laser radiation, and laser products designed for traditional
lighting (see Clause 1 of this Edition);
--- Delete the terms and definitions. α minimum value, protective enclosure (see 3.5 and
3.65 of the 2012 Edition);
--- Add the terms and definitions. angle of subtend, Class 1C laser products, contact mode,
eye safety (see 3.6, 3.19, 3.27 and 3.37 of this Edition);
--- Change the terms and definitions. angular subtense of the apparent source, apparent
source, beam diameter, beam divergence, Classes 3R and 3B laser products, Class 4 laser
products, demonstration laser products, embedded laser products, emission duration,
extended source observation, fail-safe safety interlock, beam internal view, laser hazard
zone, maximum angle of subtend, maximum allowable exposure, protective cover (see
3.7, 3.10, 3.13, 3.14, 3.23, 3.24, 3.30, 3.32, 3.33, 3.36, 3.39, 3.42, 3.47, 3.57, 3.59 and
3.68 of this Edition; 3.7, 3.10, 3.13, 3.14, 3.22, 3.23, 3.28, 3.30, 3.33, 3.34, 3.36, 3.39,
3.44, 3.54, 3.56 and 3.66 of the 2012 Edition);
--- Change classification to classification rules and change the content (see Clause 4 of this
Edition; Clause 8 of the 2012 Edition);
--- Change determination of achievable emission levels to determination of achievable
emission levels and product classification; and change the content (see Clause 5 of this
Edition; Clause 9 of the 2012 Edition);
--- Change the requirements to engineering protection requirements and change the content
(see Clause 6 of this Edition; Clause 4 of the 2012 Edition);
--- Change the marking content (see Clause 7 of this Edition; Clause 5 of the 2012 Edition);
--- Change the content of user information (see Clause 8 of this Edition; Clause 6 of the
2012 Edition).
This Document equivalently adopts IEC 60825-1.2014 Safety of Laser Products – Part 1.
Equipment Classification and Requirements.
This Document made the following minimum editorial modifications.
--- Incorporate the interpretation contents of IEC 60825-1.2014/ISH1.2017 and IEC 60825-
1.2014/ISH2.2017 a...