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GBZ26211-2010: Discomfort glare in the interior working environment
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| GB/Z 26211-2010 | English | 954 |
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Discomfort glare in the interior working environment
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GB/Z 26211-2010
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Basic data | Standard ID | GB/Z 26211-2010 (GB/Z26211-2010) | | Description (Translated English) | Discomfort glare in the interior working environment | | Sector / Industry | National Standard | | Classification of Chinese Standard | K70 | | Classification of International Standard | 91.160.10 | | Word Count Estimation | 48,417 | | Date of Issue | 2011-01-14 | | Date of Implementation | 2011-06-01 | | Quoted Standard | CIE 45-25-295 | | Adopted Standard | CIE 55-1983, IDT | | Regulation (derived from) | ?National Standard Approval Announcement 2011 No.2 | | Issuing agency(ies) | Ministry of Health of the People's Republic of China | | Summary | This standard applies to lighting glare. According to the International Lighting vocabulary (CIE, 17th Edition, 1970) for glare 45-25-295 definition: Because the brightness distribution of inappropriate or scope or the contrast is too strong, causing discomfort or resolving details of the object or visual ability is weakened condition. | GBZ26211-2010: Discomfort glare in the interior working environment---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.
Discomfort glare in the interior working environment
ICS 91.160.10
K70
People's Republic of China national standardization of technical guidance documents
GB /Z26211-2010/CIE55-1983
Indoor work environment uncomfortable glare
(CIE55-1983, IDT)
Posted on.2011-01-14
2011-06-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Preface Ⅰ
Introduction Ⅱ
A part of the basic principles of glare control, research and application
1 basic principles of glare control 1
1.1 The natural characteristics of glare 1
1.2 uncomfortable glare control factors 1
1.3 glare control method 3
1.4 glare control system 5
Subjective Evaluation of Discomfort Glare 7
2 Glare control research and application, the requirements of the appropriate formula 8
2.1 The basic formula system 8
2.2 illumination limit system 9
2.3 Identification System Assessment 9
Part B is not recommended for mathematical projections of uncomfortable glare
4 CIE Rule 14
4.1 Proposed CIE formula 14
4.2 The Basics of Formulas
4.3 Glare from a large light source (bright ceiling) 17
Appendix A (Informative) Glare System National Survey 18
Appendix B (informative) Comparison of glare prediction system research 20
Appendix C (Informative) Calculation of uncomfortable glare parameters to determine 27
Appendix D (Informative) Proposed CIE formula for practical application 37
References 39
GB /Z26211-2010/CIE55-1983
Foreword
This technical note is equivalent to CIE 55-1983, "Discomfort Glare for Indoor Working Conditions" (English version).
This guideline is equivalent to translation CIE55-1983.
For ease of use, the following technical editorial changes have been made to this technical document.
a) Use "." instead of "," as the decimal point
b) Delete the preface of CIE55-1983.
Appendix A, Appendix B, Appendix C and Appendix D of this guidance document are informative appendices.
This Guidance Document is proposed by China National Light Industry Council.
The guidance of technical documents by the National Lighting Standardization Technical Committee (SAC/TC224) centralized.
The guiding technical documents drafted by. National Light Source Quality Supervision and Inspection Center (Beijing), Sheng Hui Lighting (Zhejiang) Co., Ltd.
Division, China Quality Certification Center, Dongguan City yuan Optoelectronics Technology Co., Ltd., Shenzhen City for the Industrial Co., Ltd., Beijing Institute of Light Sources.
The main drafters of this Guidance Document are Hua Shuming, Shen Jinxiang, An Li, Guo Jiankun, Li Jinhong, Huang Heming, Xiao Ling, Jiang Shan and Duan Yanfang.
This guideline is for reference only. The suggestions and opinions on this technical document are directed to the standardization administration under the State Council
Department reflected.
GB /Z26211-2010/CIE55-1983
Introduction
First of all, this technical note provides a technical assessment of uncomfortable glare in indoor work environments. Second, it provides a guideline for predictive lighting
The resulting uncomfortable glare proposes a CIE mathematical model, or prediction system. The first part of this guidance document is covered
The introduction of basic principles, glare control methods and glare prediction systems used in various countries; the second part focuses on the glare studies carried out
And the current predominant forecasting system; and finally to the focus of this guidance document, the CIE forecasting system, which sets the culmination of these studies.
However, this guideline technical document did not make any final judgment on the subject. At the time of the publication of the CIE report, there was a great deal of research on the subject.
The purpose of this guidance document is to provide a selective reference for countries to improve their built projects and to build new systems. This guidance document is also available
Will help lighting students and lighting professionals (such as architects, consultants, etc.) to understand what is uncomfortable glare and how to control uncomfortable
Suitable for glare.
GB /Z26211-2010/CIE55-1983
Indoor work environment uncomfortable glare
A part of the basic principles of glare control, research and application
1 glare control the basic principles
1.1 The natural characteristics of glare
Definition of glare according to 45-25-295 in the International Glossary of Luminaries (CIE, 17th Edition, 1970). Due to the distribution of lightness or range
Surrounding is not appropriate, or contrast is too strong, causing discomfort or resolution of the details or the diminished visual condition of the object.
Two definitions.
a) Glare uncomfortable to glare, causing uncomfortable sensations without necessarily diminishing the visibility of objects (as defined in 45-25-315).
b) Glare disabling glare, reducing visibility of the object without necessarily causing discomfort. (Defined at 45-25-320).
Although both types of glare are produced together, they are two completely different phenomena. Caused by disability glare is mainly due to enter the eye
The light energy, rather than the illuminance of the light source. In contrast, light illumination is a major factor in uncomfortable glare. Disability glare almost no time
, While people in factories or offices are exposed to high-intensity light for long periods of time, with uncomfortable glare also correspondingly increased.
Considering control measurements of glare produced by lamps and luminaires with built-in normal light sources, the control of discomfort glare may be more than disabling
Glare control is even more important. If you have adequate control of uncomfortable glare, the subject can normally see that disabling glare can also be well controlled
To a certain extent.
The glare referred to in this section refers to uncomfortable glare unless otherwise stated.
1.2 uncomfortable glare control factors
It is generally accepted that uncomfortable glare produced by a single light source mainly comes from four main parameters, as shown in FIG. 1.
Figure 1 uncomfortable glare parameters
Ls --- observer eye direction of the light source illumination;
ω --- toward the viewer's eye glaze solid angle;
θ --- from the observer glare source angular displacement;
Lf --- observer eyes on the control of the usual level of adaptation to field levels.
It is generally believed that Ls must be between 500 cd/m2 and 700 cd/m2 when uncomfortable glare is present.
GB /Z26211-2010/CIE55-1983
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