Powered by Google-Search & Google-Books www.ChineseStandard.net Database: 169759 (Feb 21, 2021)
HOME   Quotation   Tax   Examples Standard-List   Contact-Us   View-Cart

GB 7247.1-2012

Chinese Standard: 'GB 7247.1-2012'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
GB 7247.1-2012English400 Add to Cart 0--10 minutes. Auto immediate delivery. Safety of laser products -- Part 1: Equipment classification and requirements Valid GB 7247.1-2012
GB 7247.1-2012Chinese49 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

  In 0~10 minutes time, full copy of this English-PDF will be auto-immediately delivered to your email. See samples for translation quality.  

Standard ID GB 7247.1-2012 (GB7247.1-2012)
Description (Translated English) Safety of laser products. Part 1: Equipment classification and requirements
Sector / Industry National Standard
Classification of Chinese Standard L51
Classification of International Standard 31.260
Word Count Estimation 78,796
Older Standard (superseded by this standard) GB 7247.1-2001
Quoted Standard IEC 60050-845-1987; IEC 60601-2-22; IEC 61010-1
Adopted Standard IEC 60825-1-2007, IDT
Drafting Organization Beijing Optoelectronic Technology Institute
Administrative Organization National Optical radiation safety and laser equipment Standardization Technical Committee
Regulation (derived from) National Standards Bulletin No. 42 of 2012
Proposing organization China Machinery Industry Federation
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 applies to the wavelength range of 180 nm ~ 1mm laser products within the safety of laser radiation. A laser product could be with or without a separate power of a single laser, it can be equipped with one or more lasers complex opti

GB 7247.1-2012
Safety of laser products.Part 1. Equipment classification and requirements
ICS 31.260
National Standards of People's Republic of China
Replacing GB 7247.1-2001
Safety of laser products
Part 1. Equipment classification, requirements
Published 2012-12-31
2013-12-25 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Introduction Ⅴ
1 Scope 1
2 Normative references 2
2 3 Definitions
4 requires 12
4.1 General 12
4.2 shield 12
4.3 baffle and safety interlock 13
4.4 Remote interlock connector 13
Manual reset 13 4.5
4.6 14 key controller
14 4.7 Laser radiation emitted warning
4.8 beam stop or attenuator 14
4.9 Controller 14
4.10 optical viewer 14
Scanning safety device 14 4.11
4.12 "enter" Channel 14
15 4.13 Environmental conditions
Other hazard protection 15 4.14
5 Mark 15
5.1 General requirements 15
Class 1 and Class 1M 17 5.2
Class 2 and Class 2M 18 5.3
5.4 3R Class 18
5.5 3B Class 18
Class 4 18 5.6
5.7 mark window 19
5.8 Standards 19 and the radiation output
5.9 baffle mark 19
5.10 invisible laser radiation warning 20
Visible laser radiation warning 20 5.11
6 other illustrative in claim 20
20 6.1 Profile
Procurement and maintenance instructions 21 6.2
Additional requirements for laser products 22 7
Other portions of 7.1 IEC 60825 series of standards 22
7.2 Medical Laser Products 22
7.3 Laser processing machines 22
7.4 electronic toys 22
7.5 Consumer Electronics 22
8 classification 22
8.1 Overview 22
23 8.2 Classification duties
8.3 Classification Rule 23
9 to determine the emission levels of up to 26
9.1 Inspection 26
Laser radiation measuring 9.2 category 29
9.3 Measurement Geometry 34
Annex A (normative) maximum permissible exposure 39
Annex B (normative) Calculation example 45
Annex C (informative) category description and potential hazards associated 52
Annex D (informative) biophysical principle 56
Annex E (normative) represents MPEs and AELs 63 by radiance
Appendix F (informative) Summary 66
Appendix G (Informative Appendix) IEC 60825 relevant part list 68
Reference 70
1 --- FIG danger warning mark symbol 16
FIG 2 illustrates a tag 17
Figure 3 is mapped to a field stop plane by receiving angle measurement limit of the apparent source 36 Schematic
FIG 4 by a circular diaphragm or a light shielding plate (as a field diaphragm) is placed close to the measurement limit of the apparent source location means receiving angle
36 schematic
FIG 5 determines the accessible emission (a diagram) and a schematic view of the apparent source of the angle (b in FIG.) Under the conditions of the test apparatus 2, consider extending
A light source (i.e., without the use of a simple evaluation method default) 37
Figure B.1 The output parameters provided by the laser product classification is a flowchart 46
Figure B.2 classification Class 1M and 2M laser products flowchart 47
FIG B.3 AEL value for the selected class 1 laser product UV transmission duration of 48 10-9s ~ 103s
FIG B.4 AEL value on the selected wavelength, the transmission duration 10-9s ~ 103s UV Class 1 laser product 48
FIG class B.5 1 selected visible and infrared laser product AEL value (C6 = 1) 49
D.1 anatomy of the eye 56 of FIG.
D.2 schematic diagram of the laser radiation on biological tissue injury 58
FIG E.1 radiance is a function of wavelength 63
Safety interlock requirements of Table 1 of 13
Table 2 Effect of different spectral region of superposition of the radiation on the eyes and skin 23
Table 3 added burst time limit 26
Table 41 Class and 1M laser products accessible emission limit and C6 = 1a, b 27
Table 5 in the wavelength range of 400nm ~ 1400nm Class 1 laser product accessible emission limit (affected areas of the retina).
Extended source a, b, c, d, e 28
Table Class 62 and Class 2M laser products accessible emission limit of 29
Table 73 laser products accessible emission limit and C6 = 1a, b, c 31
Table 8 Emission Limit Wavelength (affected areas of the retina) in the range up to 400nm ~ 1400nm within 3R laser products.
Extended source a, b 32
Table 9 3B laser products accessible emission limit 33
Correction factor table 10 and breakpoints 33 and AEL use in MPE evaluation
Table 11 and for measuring the aperture diameter default measurement (simple) evaluated from 35
Table 12 Reference point 35
Table 13 limit the acceptance angle γph 38
Table A.1 C6 = 1, the laser radiation a, b the maximum permissible exposure irradiated on the cornea (MPE) 40
Table A.2 ~ 1400nm wavelength in the range 400nm, an extended light source maximum allowed laser radiation on the cornea
Irradiation amount (the MPE) (affected areas of the retina) 41
Table A.3 laser radiation a, b maximum allowed skin exposure (MPE) 42
Table 42 A.4 for measuring the aperture diameter of the laser irradiation and irradiation amount
Table 59 D.1 list pathological effects of an excess of illumination
Table D.2 description applies to the measuring aperture of 62 MPE
Table E.1 Class 1 Maximum luminance radiation scattered light 63
Table F.1 this section all the physical list 66
Table F.2 list of 67 manufacturers requirements
Supplementary information Table G.1 IEC 60825 relevant part of the list of 69
Part of this Chapter 3, Appendix A ~ Appendix G is recommended, the rest are mandatory.
GB 7247 "Safety of laser products" is divided into the following sections.
--- Part 1. Equipment classification, requirements;
Section --- 14. User's Guide.
This is Part 1 GB 7247's.
This section drafted in accordance with the rules GB/T 1.1-2009 given.
This section instead of GB 7247.1-2001 "Safety of laser products - Part 1. Classification of laser devices, requirements and user's guide"
Compared with GB 7247.1-2001 major technical changes as follows.
--- deleted the light-emitting diode (LED) part, (explained in Chapter 1, 2001 edition 1.1);
--- increased terms and definitions. transmitting up, acceptance angle, light, 1M laser products, 2M laser products, assessment of retinal light
Chemical hazards acceptance angle limit, ultimate thermal hazard evaluation acceptance angle, the maximum position limit, photochemical hazard limit, a small light source,
Thermal effects Hazard limits and time reference (see 3.2,3.6,3.11,3.19,3.21,3.50,3.51,3.60,3.64,3.80,3.82
And 3.83);
--- remove terms and definitions. collimating a laser, laser optical fiber transmission system, a laser leveling product, service connection and test
Painted with laser products (2001 edition 3.4,3.40,3.45,3.71 and 3.75);
--- modify the name and contents of the terms and definitions. the angle of the apparent source, 3R and 3B laser-based products, production embedded laser
Products, the duration of irradiation (see 3.7,3.22,3.30 and 333, 2001 edition of 3.6,3.17,3.25 and 3.28.);
The terms and definitions --- "window; aperture stop" of a two changes (see 3.8 and 39, 2001 edition of 3.7.);
--- modify the contents and definitions of terms. accessible emission limit, the apparent source, a beam diameter, beam divergence, Class 1 laser product,
Class 2 laser products, extended source observed, the contact person, depending on the beam, the maximum output and specular (see 3.3,3.10,3.13,
3.14,3.18,3.20,3.34,3.37,3.39,3.55 and 3.81, 2001 edition of 3.2,3.8,3.10,3.11,3.15,
3.16,3.29,3.32,3.34,3.50 and 3.74);
--- modify the general requirements of the shield (see 421, 2001 edition 4.2.1.);
--- modified baffle and safety interlock, a warning emitted laser radiation, scanning means, and safety, "enter" the contents of the channel (see 4.3,4.7,
4.11 and 412, 2001 edition of 4.3,4.6,4.10 and 4.12);
--- increasing the content of the manual reset (see 4.5);
--- deleted collimator aid content (see 2001 edition of 4.11);
--- modify the contents of the tag (see 5.2,5.3,5.4,5.8,5.9 and 5.10, 2001 edition of 5.2,5.3,5.4,5.8,5.9
And 5.10);
--- modify the content of the user information (see 61, 2001 edition 6.1.);
--- increase in other parts of IEC 60825 series of standards, laser processing machines, electronic toys, consumer electronics (see
7.1,7.3,7.4 and 7.5);
--- deleted laser optical fiber transmission system (see 2001 edition 7.2);
--- Chapter IX changed the classification of Chapter VIII and modify the contents (see Chapter 8, Chapter 9, 2001 edition);
--- detects changes to determine the emission levels up to and edit the contents (see Chapter 9, Chapter 8, 2001 edition);
--- delete the part of the user guide (see the 2001 edition of the first three and the relevant parts);
--- increase the maximum permissible exposure content (see Appendix A);
--- modify the calculation example, the example in which the classification calculation increases, the maximum permissible exposure deleted calculation examples (see to Appendix B,
2001 edition of Appendix A);
--- increased the category description and potential hazards related content (see Appendix C);
--- modify the biological physics (see Appendix D, 2001 edition of Appendix B);
--- represents an increase of MPEs and AELs (see Appendix E) with radiance;
--- Schedule change and modify the contents of the summary table (see Appendix F, 2001 edition Appendix D);
List of relevant portions --- increased IEC 60825 (see Appendix G);
--- deleted dedicated to laser materials processing products, high-power lasers content (2001 edition Appendix E);
--- deleted the relevant standards (the 2001 version of Appendix F).
Consistency correspondence relationship with international documents in this section of our normative references the following documents.
--- GB/T 2900.65-2004 Electrotechnical term lighting (IEC 60050-845. 1987, MOD);
--- GB 4793.1-2007 measurement, control, and laboratory safety requirements for electrical equipment with Part 1. General Requirements
(IEC 61010-1.2001, IDT);
--- GB 9706.20-2000 Medical electrical equipment - Part 2. diagnosis and treatment of laser safety requirements for equipment
(IEC 60601-2-22.1995, IDT).
This section uses the translation method is equivalent to using IEC 60825-1.2007 "Safety of laser products Part 1. Equipment classification and requirements" (English
Chinese version). IEC 60825-1.2007 and IEC IEV relationship not mentioned (in English), a paper with IEC 60825-1.2007 (English version)
the same.
This section made the following editorial changes.
--- delete IEC 60825-1.2007 Foreword.
Please note that some of the content of this document may involve patents. The issuing authority of this document does not assume responsibility to identify these patents.
This section was proposed by China Machinery Industry Federation.
This part of the jurisdiction of the National Standardization Technical Committee of optical radiation (SAC/TC284) safety and laser equipment.
This section was drafted. Beijing Institute of Optoelectronic Technology, Beijing laser parameters Test Center, 11th Institute of China Electronics Technology Group Corporation.
The main drafters of this section. Wu Aiping, Lu Yonghong, Duan Guang, Li Jialun, Qi Yan.
This section replaces the following previously issued as follows.
--- GB 7247-1987, GB 7247-1995; GB 7247.1-2001.
Safety of laser products
Part 1. Equipment classification, requirements
1 Scope
This section applies to the wavelength range within safe ~ 1mm 180nm laser radiation of laser products.
A laser product may be a single laser with or without an independent power source, it may be equipped with one or more lasers
Sophisticated optical, electrical or mechanical systems. Laser products are generally used to demonstrate physical and optical phenomena, material processing, and reads out the stored data,
Transmission and display information. These systems have been used in industry, business, entertainment, research, education, medical and consumer products.
Sold to other manufacturers of laser products used as components of the system may not comply with this section, because the final product itself will be subject to this section.
However, if the product of the laser system after separation of the laser device is operable device, then the cells were removed should meet the requirements of this section.
Note 1. The operation of the equipment does not need to prepare for its functioning tool.
If the manufacturer in accordance with Chapter 3, Section 8, Chapter 9 classification production of laser products, without regard to the requirements of this section, indicating shock
Light products in all operating, maintenance, overhaul and its emission levels under fault conditions is not more than 1 class of accessible emission limit (ALE).
Note 2. The exemption mentioned above is to ensure the safety of the original laser products are not subject to the standard constraints.
In addition to the harm caused by the laser radiation, the laser apparatus can cause other injury, such as electric shock and fire.
Note 3. However, classification and other requirements in this section only harmful to the eyes and skin against laser radiation. Other hazards are not included within the scope of this section.
This section describes the minimum requirements. Compliance with this section may not be sufficient to achieve the level of safety required for the product. Laser products must comply
With the corresponding product safety standards compatible performance and test requirements.
Note 4. Other criteria may include additional requirements. You should consider the intended application and user groups. For example, 3B or Class 4 laser products are not suitable for use as a consumer product.
If the laser system forms part of the device, the device must comply with other IEC product safety standard, [such as medical equipment (IEC 60601-
2-22), information technology equipment (IEC 60950), audio and video equipment (IEC 60065), equipment (IEC 60079) for use in hazardous environments, electrical
Toys (IEC 62115)]. The IEC Guide 1041) terms, this part applies to hazards caused by the laser radiation. If not applicable
Product safety standards, you should use the IEC 61010-1.
1) IEC Guide 104.1997, the development and use of basic safety publications in safety publications and publication series of safety.
In previous versions, LEDs (light emitting diodes) included within the scope of IEC 60825-1, IEC 60825 is still included in the system
The rest of the column Standard. However, with the development of the luminaire safety standards, LEDs (light emitting diode) light radiation is generally more suitable for security
In the luminaire engagement predetermined safety standards. LEDs (light emitting diodes) is deleted from the scope of the section, does not interfere with other criteria in relation stimulated
It includes LEDs (light emitting diode) light products. CIES009 may be used to determine the LED (light emitting diode) or contain one or more
Risk of LEDs (light emitting diodes) product classification.
This section MPE (maximum permissible exposure) values only for the laser radiation and not to the secondary radiation. However, if some kind of business deposit
Accompanied by a dangerous radiation in accessible, the potential harm can be carried out carefully assessed using MPE value of the laser radiation.
MPE values do not apply for the medical treatment of patients or laser irradiation of human beauty.
Note 5. Appendices Appendix A ~ G comprises a general guide and lists a number of typical examples. But it must not be seen as determining the appendix or exhaustive, but rather as
Reference the corresponding provisions of this section.
This section has the following purposes.
--- introduction of lasers and laser products according to optical radiation hazard degree classification system to help hazard assessment and help users determine control measures;
--- establish requirements for manufacturers to provide information in order to take appropriate preventive measures;
--- by labeling and instructions ensure that warnings of hazards associated with radiation up to laser products;
--- to reduce the possibility of injury, make up unnecessary radiation minimized, and improved control of the laser radiation hazards through protective measures.
2 Normative references
The following documents for the application of this document is essential. For dated references, only applies to the version dated paper
Pieces. For undated references, the latest edition (including any amendments) applies to this document.
IEC 60050-845. 1987 International Electrotechnical Vocabulary (IEV) Chapter 845. Light
IEC 60601-2-22 Medical Electrical Equipment Part 2. diagnosis and treatment of laser safety requirements for equipment
IEC 61010-1 measurement, control and safety requirements for electrical equipment with a laboratory Part 1. General Requirements
3 Terms and Definitions
IEC 60050-845 Definition The following terms and definitions apply to this document. For ease of use, it is listed in the following repeating
Certain terms and definitions in IEC 60050-845.
Note. For convenience, all of the definitions are arranged alphabetically. Inconsistent with the IEC 60050-845 part is highlighted. In this case, according to
IEC 60050-845 part description, references are enclosed in parentheses and with a "modified" FIG.
Baffle access panel
A portion of the protective cover or protective enclosure. When removed or removed, and to provide the laser radiation path.
Accessible emission accessible emission
Using a position of the aperture stop (AEL in watts or joules) or limiting aperture (AEL to W · m-2 or J · m-2 units) the amount of radiation is determined in accordance with Chapter 9.
3.37 defined as specified, and is determined considering only up to where the person transmitting contact. In order to determine the category of laser products, with up to
Launch and accessible emission limit (defined in 3.3) were compared. Standard text uses the term "horizontal emission" is understood to reach emission.
NOTE. When the laser beam is larger than the diameter of the aperture stop, in watts or joules given in units smaller than the laser emission products up total transmit power or energy.
When the average pore diameter of the laser beam irradiated on a diameter smaller than the limiting aperture to W · m-2, or is J · m-2 given in units of up to transmit, i.e., to limit the
Or an amount of radiation, the laser beam is less than the actual amount of irradiance or irradiation. See aperture stop (3.9) and limiting aperture (3.52).
Accessible emission limit accessible emission limit; AEL
Up within the prescribed categories permitted emission.
Note. the text "does not exceed the emission levels AEL" or similar wording, its meaning is. comply with the provisions of Chapter 9 of the standard test measuring up to launch.
Management control administrative control
Non-engineering safety measures. For example. the key regulatory, safety training of personnel, warning measures, countdown procedures and security controls the site.
α minimum alphamin
See subtended angle subtended angle and the minimum (see 3.7 and 3.58).
Receiving corner angle of accepance
In response to the optical radiation detector plane angle, typically measured in radians.
Receiving angular aperture angle can be placed in front of the control element or optical sensor (see FIG. 3 and FIG. 4). Sometimes referred to as the acceptance angle of the field of view.
The angle of the apparent source
3, observed from a certain point at the space spanned the apparent source of the angle.
Note 1. The position of the apparent source and depends on the angle of observation position in the light beam (see 3.11).
Note 2. the angle of this section applies to the wavelength range of the retina from the apparent source region hazard 400nm ~ 1400nm.
Note 3. The light source should not be confused with the angle of beam divergence. To not be greater than the angle of light beam divergence angle, typically less than the beam divergence angle.
Window (aperture) Aperture
Opening a window is on any laser or other product guard shield, through which the emitted laser radiation allows personnel close.
See also limiting aperture (3.52).
Aperture diaphragm aperture stop
Test for determining the opening area of the radiation through.
Apparent source apparent source
Emitter retina hazard assessment given position, may be formed on the retina of the minimum image real or virtual (adjusted considering the human eye
Note 1. The adjustment range is assumed that the human eye is variable from 100mm to infinity. The inner beam in a given viewing position, the position of the apparent source of the eye adjustment
Position to produce maximum radiation hazard condition corresponding to the retina.
Note 2. This defines the location of the apparent source of the laser radiation in the wavelength range of 400nm ~ 1400nm measurement evaluation on a given position. In the divergence is
The limit of zero, i.e. under ideal circumstances parallel beam, the position of the apparent source to infinity.
Light beam
Direction by the divergence angle, diameter or characterization of scanning laser radiation.
It does not look for the non-specular reflection of the scattered radiation generated as a light beam.
Beam attenuator beam attenuator
The laser radiation is reduced to a predetermined level below the predetermined level, or apparatus.
Beam diameter beam diameter
Beam width beam width
Du beam diameter at a point which refers to the space power (or energy) of the total laser power (or energy) u% of the minimum diameter.
This part is d63.
NOTE 1. For a Gaussian beam, d63 reduced to a point corresponding to the center of its peak value 1/e of in irradiance (irradiance).
Note 2. the second moment diameter is defined (defined in ISO 11146-1) is not used for a laser beam having a cross-sectional center of the high peaks and low background radiation, for example, from unstable resonator
The far-field laser beam. When the second-order moment and calculates a power by assuming a Gaussian beam cross-section, will be significantly underestimated by the power aperture.
Beam divergence angle of beam divergence
Defined by the beam diameter of the conical far field plane angle.
If the distance r of the beam diameter of the two (see 3.13) is d63 and d'63, the beam divergence angle is represented as [see (1)].
φ --- beam divergence angle;
D --- beam diameter;
--- R & lt spacing between two points.
SI units. radians.
NOTE. divergence angle of the second moment is defined (defined in ISO 11146-1) is not used for a laser beam having a cross-sectional center of the high peaks and low background radiation, for example, from unstable resonator
Far-field of the laser beam, the beam profile exhibited diffraction pattern caused by the aperture.
Beam expander beam expander
The optical element can be increased combined laser beam diameter.
Light path beam path component element
The optical member located at a predetermined optical path (e.g.. beam steering mirror or a focusing lens).
Beam stop beam stop
Laser beam path termination means.
Class 1 Laser Product Class1 laser product
During operation of the laser radiation, and an emission wavelength within a respective duration, the contact person may not exceed Class 1 Accessible Emission Limit
(The AEL) laser and 8.3E product [see 8.2)].
Note 1. See Appendix C limit classification table.
Note 2. Since the determination of product categories tested were limited during the work, depending on the product's embedded laser product, lifting baffles during maintenance of the Union
The lock, may be exposed to radiation above the Class 1 AEL.
Class 1M laser product Class 1M laser product
In the wavelength range 302.5nm ~ 4000nm, during operation, within the respective emission wavelength and duration, excitation up to the contact person
Light radiation emitted must not exceed Class 1 up to the limit (the AEL) laser products [see 8.3E)] (9.2g radiation level based on measurement).
Note 1. See Appendix C limit classification table.
Note 2. Since Class 1 laser product than using smaller pore size measurement, or assessment of radiation from the apparent source farther away from the horizontal, so the use of an optical instrument
When observed, the output Class 1M laser products are potentially hazardous (see 8.2).
Note 3. Since the determination of product categories during the test carried out limited work, depending on the product's embedded laser products, unlocking baffles during maintenance
When, may be exposed to radiation above the Class 1M AEL.
Class 2 laser product Class 2 laser product
In the wavelength range of 400nm ~ 700nm, during operation, within the respective emission wavelength and duration, the laser radiation up to the contact person
Class 2 up to the exit must not exceed emission limit (the AEL) laser and 8.3E product [see 8.2)].
Note 1. See Appendix C limit classification table.
Note 2. Since the determination of product categories tested were limited during the work, depending on the product's embedded laser product, lifting baffles during maintenance of the Union
The lock, may be exposed to radiation above the Class 2 AEL.
2M laser products Class 2M laser product
In the wavelength range of 400nm ~ 700nm, during operation, within the respective emission wavelength and duration, the laser radiation up to the contact person
Class 2 up to the exit must not exceed emission limit (the AEL) laser products [see 8.3E)] [radiation level based 9.2H) measure].
Note 1. See Appendix C limit classification table.
Note 2. 2 because the use of laser-based products than smaller pore size measurement, or assessment of radiation from the level of the light source farther away from the apparent, the use of an optical instrument
When observed, the output class 2M laser products are potentially hazardous (see 8.2).
Note 3. Since the determination of product categories during the test carried out limited work, depending on the product's embedded laser products, unlocking baffles during maintenance
When, may be exposed to radiation above the AEL 2M class.
Class 3R and Class 3B laser products Class 3R and Class 3B laser product
During operation, the laser radiation allowed to exceed the contact person Class 1 and Class 2 accessible emission limit (the AEL), but the duration of any emission
And the wavelength, the laser radiation allowed to exceed the contact person classes 3R and 3B each class accessible emission limit (the AEL) laser products (see 8.2).
Note 1. See Appendix C limit classification table.
Note 2. 1M 2M class and the output products, according to their optical characteristics, may be higher or lower than 3R type AEL.
Class 4 laser product Class 4 laser product
Laser radiation is allowed to exceed the contact person based 3B accessible emission limit (the AEL) laser products (see 8.2).
Secondary radiation colateral radiation
Necessarily generated laser runtime, or operating wavelength range of the laser light by laser emitting in the product 180nm ~ 1mm
Electromagnetic radiation other than laser radiation therein.
Colimated beam collimated beam
Minimal divergence angle or convergence angle of the radiation beam.
Continuous wave continuous wave; CW
In this section, the continuous output of the laser is equal to or greater than 0.25s as a continuous wave laser.
Prescribed optical path definedbeampath
The predetermined path of the laser beam inside the laser products.
Demonstration laser products demonstrationlaserproduct
To demonstrate, entertainment, advertising, display or artistic composition and design, manufacture, or sell a predetermined laser products.
The term "demonstration laser products" does not apply to other applications designed and predetermined laser products, although they may also be used to demonstrate
These applications.
Diffuse diffusereflection
Multi backscattered radiation beam changes the spatial distribution of the radiation beam through a surface or medium.
Diffuse breakable over all the correlation between the incident direction and the exit direction.
[IEV845-04-47, modified]
Embedded laser products embeddedlaserproduct
In this section, the embedded laser products is due to the engineering design limits the accessible emission limit, which is lower than the given category in which the laser
Inherent ability to launch laser products.
Note. The laser is referred to as an embedded part of the embedded laser laser products.
Transmit duration emissionduration
Due to the use, maintenance or service of laser products, personnel contact with a single pulse of laser radiation, the pulse train or pulse series may occur, or continuously
The duration of operation of the laser wave.
For single pulse, which is half-power pulse leading edge and the trailing duration between corresponding points. For the burst (or sub-burst
Section), which is the time duration between a last peak power of a pulse peak power of the preamble highs and subsequent pulses highs.
Drift laser radiation errantlaserradiation
And the optical path of laser radiation predetermined deviation.
Such unwanted reflected radiation comprises an optical path from the element, not alignment or abnormal radiating element is damaged.
Duration of irradiation exposure duration
Single pulse, series of pulses, bursts or continuous laser radiation to the duration of the human body.
For the burst, the last is between the first power of the peak power of the preamble pulse and the subsequent pulses highs peak highs
Observation extended source viewing extended light source
100mm or more distant in the apparent source of the eye to be larger than the minimum opening angle of the case where the observation angle (αmin) of.
When considering thermal retinal injury hazards, this portion of the extended light source consider two conditions. Medium and large light source. The apparent source
A light source for the angle [alpha] is divided, between the αmin and αmax moderate light, the light source is greater than αmax is large. (See 3.80).
For example some scattered laser light source for observation, and certain diffuse reflection of the laser diode array.
Fail-safe fail safe
When a component failure does not increase protection design hazards.
When the system fails, the system does not work or no harm.
Fail-safe safety interlock fail safe safety interlock
When the system failure, the safety device does not fail interlocks. For example. Once the hinged lid begins to open before removal or detachable lid, biphenyl
And held at the lock must be in the "off" position, until the hinged lid closed, or a removable cover into a locked state, the interlock only in the "on" position.
Personnel in contact with human access
--- human exposure to the laser radiation emitted by the laser products, i.e. the possibility of radiation outside the shield may be taken; or
3B and the following classes possibility radiation level --- a diameter of 100mm, a length not more than 100mm cylindrical probe taken;
--- persons hand or arm possibility of blocking radiation level is higher than the AEL Class 3B;
When --- in the hood, there are radiation levels equivalent to 4 or Class 3B class, subject to any part of the body from the inside of the product, any insertion
The possibility of a single plane of the reflected through an opening of the shield according to any harmful direct laser radiation.
Note. For a predetermined laser products can enter into contact, in order to define a contact person, must take into account the internal and external shields radiation. be usable
Engineering controls such as an automatic detection system or the like to prevent the contact person in the shroud.
Total radiation (emission) luminance integrated radiance
Radiation (emission) in the luminance integration of a given exposure time, expressed in units of energy to emit radiation within a solid angle of radiation per unit area.
(Units typically J · m-2 · sr-1 expressed).
Beam endoscopy intra beam viewing
And observe the diffuse reflection, the light beam depending on the eye by means of laser irradiation or direct specular reflection of the light beam when viewed.
Irradiance irradiance
Radiant flux projected onto the surface of the surface element at the point of the bin area dA of commercially [see formula (2)].
E = dΦdA
dΦ --- radiant flux;
dA --- bin area.
SI units. watts per square meter (W · m-2).
Laser laser
Primarily generated by a controlled or amplified by the stimulated emission process, electromagnetic radiation of a wavelength of 180nm ~ means the range 1mm.
[IEV845-04-39, modified]
Laser controlled area laser controled area
Controlled and monitored to prevent retention and activity area radiation hazards.
Laser energy laser energy source
And means associated with the laser is excited electronic, ion, or molecule to provide energy.
Usually that is not energy (such as a battery or power supply) is a laser energy.
Laser Hazard area laser hazard area
See eye hazard zone nominal (3.61).
Laser products laser product
For any product or combination of components constituting a laser or a laser system configured or prepared for.
Laser radiation laesr radiation
The wavelength of laser light by the stimulated emission products generated for all electromagnetic radiation 180nm of ~ 1mm.
Laser Safety Officer laser safety officer
Known laser hazard assessment and control, and is responsible for overseeing staff laser hazard control.
The laser system laser system
Corresponding to a combination of laser and a laser energy source with or without additional components.
LED light emitting diode; LED
The semiconductor reactivation in a wavelength 180nm ~ semiconductor pn junction device of electromagnetic radiation in the range of 1mm by radiation.
(Primarily optical radiation generated by spontaneous emission process, although there are some stimulated emission.)
Assessment of retinal photochemical hazard limit the acceptance angle limiting angle of acceptance for evaluating retinal photo-
chemical hazards
To assess retinal photochemical hazard receiving a predetermined limit of angle measurement γph. γph angle related to eye movement, the angle of the light source without
turn off. If the light source for receiving the predetermined angle greater than the limit angle γph, then the acceptance angle γ is limited to γph, and the light source as closely monitored hotspot
View. If the measured receiving angle γ is not limited to a predetermined level, the hazard may be overestimated.
NOTE. If the apparent source of the limit angle is less than a predetermined acceptance angle, the actual value of the acceptance angle does not affect the measurement not necessarily limited to use radiometer is normally provided
Receiving angle is set "on" function.
Evaluation of Thermal Hazards limit the acceptance angle limiting angle of acceptance for evaluating retinal thermal hazards
Retinal thermal hazard evaluation for a maximum subtended angle.
Receiving angle may vary γth value [see 8.3d), 9.3.3b) 2)] between αmin and αmax.
Limiting aperture limiting aperture
Irradiance exposure amount and average circle domain.
Maintenance maintenance
Adjusting a laser method or program product specified by the manufacturer in the user manual. In order to ensure the normal operation of laser products,
User to perform these procedures.
It does not include the use or maintenance.
The maximum angle of the maximum angular subtense
The apparent source of the angle value, when the value is greater than the angle which MPE AEL and nonadherence Laiguang Yuan size.
Note. αmax = 100mrad.
Maximum output maximum output
After the factory laser products over the entire operating range, at any time of the launch in any direction, up to a total maximum radiation laser radiation
Maximum power single pulse or radiant energy.
Note. The maximum output is up to emit a laser is used to determine product categories. Among other conditions, further comprising determining the accessible emission considered single failure
Conditions (see 9.2), the maximum output may exceed the maximum output during normal operation.
Maximum permissible exposure maximum permissible exposure; MPE
Under normal circumstances the body irradiated with laser light does not produce adverse consequences of laser radiation levels.
It refers to the level of the MPE eyes, or skin immediately after irradiation or by long time without damage occurring maximum illumination level, which the laser radiation
Long, pulse duration or irradiation, biological tissue at risk of exposure to 400nm ~ 1400nm and the visible and near infrared laser
Retinal image size of the optical radiation so on. In Appendix A specifies the maximum allowed level of illumination (the existing state of knowledge on
Medical laser products medical laser product
For diagnosis, treatment or surgery of any part of the body by irradiation of laser design, manufacture, sell, or any predetermined laser
The minimum angle of the angular aubtense
The apparent value of the angle of the light source. The light source is greater than the value of the angle to be considered an extended light source.
When the light source is less than the angle αmin, which does not depend on MPE and AEL source size.
Note. αmin = 1.5mrad.
Clamping mode-locking
Laser resonator generates a rule, very narrow pulse width. Mechanism (e.g. sub-nanosecond) or burst phenomenon.
Under certain conditions, it can occur spontaneously "self-mode-locking." Clamping the peak power can be generated is far greater than the average power.
The maximum limit position
The position of the laser beam, and the emission ratio of up to a maximum of AEL in this position.
NOTE. AEL and may transmit up to rely on the assessment of the position of the laser beam.
The nominal ocular hazard area
Maximum permissible exposure (MPE) in the region of the beam irradiance or irradiation amount exceeds the corresponding cornea, which comprises a laser beam may occur
It refers to the case of an accident the wrong direction.
If NOHA including the possibility of the laser beam through the optical viewing aid, is defined as "extended NOHA."
The nominal ocular hazard distance
Beam irradiance or irradiation amount equal to the corresponding maximum allowable cornea exposure (MPE) distance.
If NOHD including the possibility of the laser beam through the optical viewing aid, is defined as "extended NOHD (ENOHD)".
Operation operation
Laser products perform all of its intended function.
It does not include maintenance or repair.
Photochemical hazard limit
Whether or MPE AEL are based on photochemical effects to protect personnel from damage limits.
In the ultraviolet wavelength range photochemical hazard limit protection from the harmful effects of the cornea and lens; similarly defined in the 400nm ~ 600nm
Within the wavelength range of light actinic to prevent harm to limit retinitis caused by radiation - photochemical retinal injury.
Protective enclosure
Kind of physical means to prevent the laser radiation irradiated by the art, unless the installation before they can enter a predetermined function.
protecting mask
To prevent personal contact with accessible emission exceeds the specified limit of laser radiation in the design and installation of laser products (including the installation of an embedded laser
Those portions of the guard's product) (generally installed by the manufacturer).
Pulse Width
Before the pulse, the peak power point between the trailing half of the measured time difference.
Pulsed laser
Release of energy in the form of a single laser pulse or burst. In this section, a pulse width of less than 0.25s.
Radiation (radio) Brightness
The amount defined by the equation [see formula (3)].
d [Phi] --- membered light beam through a point at a solid angle element dΩ radiation flux in a given direction of transmission;
dA --- given point of the beam cross-sectional area;
--- the angle [theta] of the tangent plane normal and the beam direction.
SI units. W · m-2 · sr-1.
[IEV845-01-34, modified]
Note. The definition is a simplified form of IEV845-01-34 enough in this part. As it is difficult to determine, it should comply with the definition of IEV.
Radiant energy radiant energy
Radiation flux in a given duration of integration time, expressed as [see (4)].
Q = ∫ΔtΦdt (4)
Δt --- a given duration.
SI unit. joule (J).
Radiation exposure radiant exposure
Irradiated radiant energy somewhere on the surface of the surface element divided by the area of the surface element, represented as [see formula (5)].
H = dQdA = ∫Edt (5)
SI units. Joules per square meter (J · m-2).
Radiant flux radiant flux
Radiated power radiant power
Form of radiation emitted, transmitted or received power, expressed as [see formula (6)].
Φ = dQdt
SI unit. watt (W).
Reflectance reflectance
Ratio of the radiation power of the radiation reflected power to the incident under the given conditions.
SI units. 1.
[IEV845-04-58, modified]
Remote interlock connector remote interlock connector
External controller connector member spaced from the other laser coupled product (see 4.4).
Safety interlock safety interlock
When a portion of the protective cover removed, opened or detached, to prevent human contact class 3R, 3B or Class 4 type provided with laser radiation prevention
Automatic means connected to each part of the shroud (see 4.3).
Scanning laser radiation scanning laser radiation
With respect to the stationary reference frame, to change over time radiation directions, the radiation source or the laser propagation modes.
Maintenance service
Manufacturers who perform maintenance or adjustment procedures described in the specification, which can affect product performance.
But does not include maintenance or repair.
Access panel service panel
For an overhaul designed to be removed or removable bezel.
Single fault conditions single fault condition
The results of a single fault and the fault directly caused by the product may occur.
Small light small source
Of less than or equal to the minimum angle αmin the light source to the angle α.
Specular reflection specular reflection
A beam of light reflected by the surface (see 3.11), from the mirror includes a reflective surface.
NOTE. The purpose of this definition is recognized by some reflecting surface, for example a parabolic reflector, may increase the risk to the incident laser beam, or at least does not change it.
Thermal effects Hazard limits thermal hazard limit
Different from photochemical damage, whether or MPE AEL are based on thermal effects to protect personnel from damage limits.
Time reference time base
Categories used in laser emission duration [see 8.3E)].
Tools tool
It can be used for a screwdriver, hex wrench or other similar article handling screws or mounting operation.
Transmittance transmittance
Under given conditions, the ratio of transmitted radiant flux of the incident radiation flux.
SI units. 1.
[IEV845-04-59, modified]
Transmission (optical) density transmittance (optical) density
Taking the reciprocal of the transmission ratio of the number of base 10, as expressed [see formula (7)].
D = -log10τ (7)
Visible radiation (light) visible radiation (light)
Any optical radiation capable of causing direct vision.
Note. in this section, taken in the wavelength range of electromagnetic radiation to visible radiation 400nm ~ 700nm.
Workpiece workpiece
Processing object with laser radiation processing.
4 Requirements
4.1 General requirements
According to the manufacturer to determine the safety category, within the laser product must take certain security measures. Given these 4.2 to 4.12
Claim. The manufacturer shall ensure that those responsible for classification of laser products and laser systems receive ap......
Related standard: GB/T 7247.2-2018    GB/T 7247.5-2017
Related PDF sample: GB/T 39118-2020    JB/T 12632-2016