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The measurement of luminous flux
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Basic data
| Standard ID | GB/T 26178-2010 (GB/T26178-2010) |
| Description (Translated English) | The measurement of luminous flux |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | K70 |
| Classification of International Standard | 17.180.20 |
| Word Count Estimation | 30,316 |
| Date of Issue | 2011-01-14 |
| Date of Implementation | 2011-06-15 |
| Adopted Standard | CIE 84-1989, IDT |
| Regulation (derived from) | National Standard Approval Announcement 2011 No.2 (Total No.167) |
| 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 standard specifies the luminous flux measurement terminology. The principle involved in flux measurements. Describes a method of calculating the illuminance distribution. Measured using an integrating sphere photometer by flux method and brightness, illumination light intensity and flux measurement method defined. |
GB/T 26178-2010: The measurement of luminous flux
---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.
The measurement of luminous flux
ICS 17.180.20
K70
National Standards of People's Republic of China
Flux measuring method
(CIE84-1989, IDT)
Issued on. 2011-01-14
2011-06-15 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
Introduction Ⅳ
1 Scope 1
Terminology 1 2
2.1 Optical Measurement 1
Measuring instruments 2 2.2 Terminology
3 Measurement 2
4 light intensity distribution calculated by the flux 3
4.1 Test Principle 3
4.2 light intensity distribution measured three
4.3 Calculation Method 3
4.4 Error Sources 4
5 According to the illuminance distribution calculated flux 4
5.1 Test Principle 4
5.2 goniophotometer species 4
5.3 Measurement of illuminance distribution 6
5.4 angle encoder 7
5.5 Light Meter 7
5.6 data acquisition and calculation of flux 7
5.7 Stray light 8
5.8 occluded flux 8
5.9 Summary of sources of error 8
5.10 Properties list 9
5.11 calibration and test 9
6 using an integrating sphere measuring 10
6.1 Measuring principle 10
6.2 ball theory 10
11 6.3 Spectroscopy
6.4 Box 11 photometer
6.5 Integrating sphere 11
13 6.6 Light Meter
14 6.7 Data Acquisition
6.8 flux standard lamp 14
6.9 Measurement Example 14
6.10 testing and remediation 14
6.11 16 sources of error
Description 6.12 spherical photometer 16
7 by light intensity, brightness and illuminance determined flux 16
7.1 Measuring principle 16
7.2 Testing and Calibration 16
7.3 Characteristics 17
8 General measurement environment 17
8.1 Working environment 17
17 8.2 Aging
8.3 Burning position 17
8.4 Ambient temperature 17
8.5 vibration and shock 17
8.6 Stabilizing Phase 17
18 8.7 Electrical Measurement
8.8 Ballast 18
8.9 Power supply 18
Appendix A (informative) measuring plane 19
References 22
Foreword
This standard is equivalent to using CIE84-1989 "luminous flux measurement method" (in English).
This standard is equivalent translation CIE84-1989.
For ease of use, this standard made the following editorial changes.
The term a) "The technical report" to the "standard";
b) with a decimal point "." instead of as a decimal point "."
Appendix A of this standard is an informative annex.
The standard proposed by China National Light Industry Council.
This standard by the National Standardization Technical Committee of electrical lighting (SAC/TC224) centralized.
This standard was drafted. National Electric Light Source Quality Supervision and Inspection Center (Beijing), Hangzhou distance Photoelectric Information Co., Ltd., China conformity assessment
Set National Accreditation Centre, the National Development and Reform Commission, Guangdong TECHNOLOGY INC, Guangdong Wright Electric Co.,
Zhongshan City, Australia Keshi Lighting Appliance Co., Ltd.
The main drafters of this standard. Hua Shuming, PAN Jian roots, Chen Yanqing, David Lui, Zhou Jianlin, Huangge Ya, Tianchou, Yuan Jian red, huge fertile area, were paid more.
This standard was first published.
Introduction
The purpose of this standard is the main methods of flux measurements currently used are discussed. A method in which (according to the illuminance
And a luminance distribution calculation) is primarily used by a national standards laboratory, another method (measured using an integrating sphere) is widely used in industrial
industry. However, there are individual laboratories of industrial enterprises to adopt a third measurement method. Use goniophotometer measurement light intensity distribution. each
One way users are most concerned about their own methods currently used in the field, therefore, it is necessary to make some radical flux measurements
Foundation work, so that it can cover these major test methods, and make contact with each other.
Flux measuring method
1 Scope
This standard defines the term flux measurements. It relates to the principle of flux measurements, describing the calculation method of the illuminance distribution, product use
Methods ball photometer flux and flux methods defined by brightness, light intensity and illuminance measurements.
2 Terms
2.1 Optical Measurement
2.1.1
Luminous flux (Фv; Ф) luminousflux (Фv; Ф)
According to the role of radiation on the CIE standard photometric observer, derived from radiant flux Фe light measure. For clear vision, there
Φv = Km∫
dΦe (λ)
dλ
· V (λ) d (λ) (1)
Where.
dФe (λ)/dλ --- spectral distribution of the radiant flux;
V (λ) --- spectral luminous efficiency.
Unit. lm.
2.1.2
(Light in the specified direction) luminous intensity (Iv; I) luminousintensity (ofasource, inagivendirection) (Iv; I)
From the light source containing the specified direction within a solid angle element dΩ transmission dΦv flux divided by the solid angle element suppliers, namely
I = dΦvdΩ
(2)
Unit. cd = 1m/sr.
2.1.3
(On the surface at a certain point) illuminance (Ev; E) iluminance (atapointofasurface) (Ev; E)
DФv flux bin containing the projected point on the surface element divided by the area dA of the business, namely
Ev = dΦvdA
(3)
Unit. lx = lm · m-2.
2.1.4
(In the specified direction on actual or imaginary surface at a given point) luminance (Lv, L) luminance (inagivendirection, ata
givenpointofarealorimaginarysurface) (Lv, L)
Volume defined by a formula.
Lv = dΦvdA · cosθ · dΩ
(4)
Where.
dΦv --- is the result of luminous flux at a given point in the beam element solid angle element dΩ containing the specified direction of propagation;
dA --- contains the given point of the beam cross-sectional area;
...
