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density measurement diffuse transmission density transmission density density measurement method iso diffuse transmission density fiber optic light-emitting fabrics key system comparison table system module deployment level key measuring transducers
GB/T 11500-2008 in English

GB/T 11500-2008 in English

VALID

Photography - Density Measurement - Part 2:Geometric conditions for transmission density

  • Issued on:2008-06-18
  • Implemented on:2009-02-01
  • File Format:PDF
  • Delivery:Via email within 1~3 business days
Price(USD): $220.00
$214.00
Standard No: GB/T 11500-2008
Document status: VALID
Superseded by: GB/T 12823.2-2026 Photography and graphic technology—Density measurements—Part 2: Geometric conditions for transmittance density
Superseded on: 2027-02-01
Title in English: Photography - Density Measurement - Part 2:Geometric conditions for transmission density
Title in Chinese: 摄影 密度测量 第2部分:透视密度的几何条件
Language: English
File Format: Electronic (PDF)
Delivery: Via email within 1~3 business days
Issued on: 2008-06-18
Implemented on: 2009-02-01
Superseding: GB/T 11500-1989 Gemetric conditions for measuring transmission density
ICS Classification: 37.040.20-Photographic paper, films and cartridges
Chinese Classification: G80-Basic standards and general methods for photosensitive material
Professional Classification: GB-National Standard
Related Keywords: density measurement
diffuse transmission density
transmission density
density measurement method
iso diffuse transmission density
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《GB/T 11500-2008摄影 密度测量 第2部分:透视密度的几何条件》由TC102(全国感光材料标准化技术委员会)归口,主管部门为中国石油和化学工业联合会。
本标准代替GB/T11500―1989《摄影透射密度测量的几何条件》。 本标准规定了测量ISO漫透射密度和 f /4.5、f /1.6投影透射密度的几何条件。本标准是ISO5系列标准之一,它规定的透射密度的几何条件主要应用于黑白和彩色摄影,也可用于其他领域。 本标准与GB/T11500―1989相比,主要包括以下变化:
―――将标准名称按国际标准名称翻译,从原来的《摄影密度测量的几何条件》改为《摄影 密度测量 第2部分:透射密度的几何条件》;
―――增加了前言和引言;
―――引言中阐明了用“乳白玻璃”取代“积分球”作漫射器的理由以及透射比和透射因数的区别等;
―――为了能更清晰的理解标准内容,对“适用范围”这部分内容进行了明确的规定;同时扩充了应用范围(本版的第1章,1989版的第2章第2.2款);
―――增加了“规范性引用文件”一章。在引用标准中,因我国现无等同采用被引用国际标准的国家
标准,因此,直接引用国际标准(见本版第2章);
―――“定义”进行了扩充。为了应用的一致性和意义更明确,术语“透射因数”代替“透射比”,增加了“漫射系数”的定义(本版的第3章,1989版的第4章);
―――标准推荐了二种入射模式,二种出射模式的几何结构并以图表的形式作详细描述(本版的第5章第2款)
―――标准规定了漫射器的漫射系数和漫反射因数(本版的第5章第3款);
―――标准推荐了新的漫射系数计算方法及其实际光学测量装置(附录A);
―――标准阐明了入射通量角和出射通量角对密度测量的影响,确定采样孔的光阑位置(附录B 和附录C)。


Scope

This standard specifies the geometric conditions for measuring ISO diffuse transmission density and f/4.5, f/1.6 projected transmission density. Diffuse transmission density is mainly used for the measurement of images viewed on transparent illuminators (boxes), contact printed images, and images projected with diffuse illumination systems. Projection density is mainly used in image measurement with a condenser. Although the density measurement method specified in this standard is mainly used for image measurement, it is also often applied to the measurement of optical filters and other transparent materials.

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