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GB/T 32200-2015: Characteristic parameter and measurement of projection screens
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Characteristic parameter and measurement of projection screens
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GB/T 32200-2015
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PDF similar to GB/T 32200-2015
Standard similar to GB/T 32200-2015 DY/T 8 GB/T 13982 GB/T 32143 Basic data | Standard ID | GB/T 32200-2015 (GB/T32200-2015) | | Description (Translated English) | Characteristic parameter and measurement of projection screens | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N42 | | Classification of International Standard | 37.060.10 | | Word Count Estimation | 16,189 | | Date of Issue | 2015-12-10 | | Date of Implementation | 2016-07-01 | | Regulation (derived from) | National Standard Announcement 2015 No.38 | | 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 characteristics of the screen reflection and transmission parameters and determination show. This standard applies to all types of film, slides, projectors, video projection and video with the screen, the screen is not available for other special purposes. | GB/T 32200-2015: Characteristic parameter and measurement of projection screens---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.
Characteristic parameter and measurement of projection screens
ICS 37.060.10
N42
National Standards of People's Republic of China
Projection screens characteristic parameters and determination methods
Issued on. 2015-12-10
2016-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard is proposed and managed by China Machinery Industry Federation.
This standard was drafted. Qinhuangdao Audio-Visual Machinery Research Institute, Guangzhou Grandview Crystal Screen Co., Ltd. Wuhu giant-screen movie star, Jiang
Su Hongye audio-visual equipment Co., Ltd., Chengdu Pfister Technology Co., Ltd. Zhejiang Zhongtian Textile detection, Nanjing Branch Melody Cinema
Technology Co., Ltd., Zhejiang Jiang Yuli Plastic Co., Ltd., Zhejiang Haili get new materials Co., Ltd. Laizhou City Star Screen Haining
City Ma warp Industry Association, Zhejiang Huasheng warp New Materials Co., Ltd. Zhejiang Haining warp Productivity Promotion Center, Foshan City, Wang photoelectric
Technology Co., Ltd.
The main drafters of this standard. Dengrong Wu, Liangsi built, high pine, Jiang Guoliang, Wuqing Fu, Yaogui Song, Wang Hongwei, Tu Zhiwei Lin Gang.
Introduction
This standard is part of our standard system screen, the system standard covering film, slide projection, video and video screenings with
Various types of screens. The system is mainly composed of GB/T 13982 "reflective and transmissive projection screen", JB/T 6162 "reflective and transmissive projection screen pass
Technical conditions "and JB/T 6839" projection screens classification "together constitute the basic support screen series.
Projection screens characteristic parameters and determination methods
1 Scope
This standard specifies the characteristics of the screen reflection and transmission parameters and determination show.
This standard applies to all types of film, slides, projectors, video projection and video with the screen, the screen is not available for other special purposes.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Projection screens projectionscreens
For screening with a predetermined light reflection and transmission optical properties of the screen surface.
2.2
D-type screen typeDscreen
Also known as diffuse screen. D-type screen incident light diffusely reflected in the 2π solid angle space, the brightness coefficient Polar curve
Close to ideal diffuse semicircle.
2.3
B-type screen typeBscreen
Known as the reflective screen gain on the angle of incidence. B-type screen of the incident light is reflected in the solid angle 2π space having the angle of incidence of light
Agglomeration gain reflection characteristics.
2.4
S-type screen typeSscreen
Also known as the angle of reflection on the gain reflecting screen. S-type screen of the incident light is reflected in the 2π solid angle of the light reflection angle having a space
Agglomeration gain reflection characteristics, size or angle of reflection equal to the angle of incidence.
2.5
R-type screen typeRscreen
Also known as transmissive screen. R is a transmission type screen to watch the screen light, transmitted light gathering gain direction coincides with the direction of the incident light.
2.6
Luminance factor β luminancefactorβ
When given the same lighting conditions and viewing angle, the brightness of the reflection brightness of reflected or transmitted over the surface of the measured diffuse screen than
Values, such as the formula (1) below.
β =
Ly
L1
(1)
Where.
β --- brightness coefficient;
Ly --- given viewing angle of the screen brightness of reflected or transmitted, in units of candela per square meter (cd/m2);
L1 --- given viewing angle on the reflective brightness over diffuse surface, in units of candela per square meter (cd/m2).
In practice, in order to diffuse reflection plate instead of over standard diffuse surface, due to the brightness of the diffuse reflection coefficient is less than the standard plate 1, the formula (1)
Become a formula (2).
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