HDTV Log. Gray Scale Test Chart, 13 steps, contrast 1:200 YE0223 Halftone Reproduction Evaluation Chart

HDTV Log. Gray Scale Test Chart, 13 steps, contrast 1:200 YE0223 Halftone Reproduction Evaluation Chart

The YE0223 is designed for evaluation of the halftone reproduction of electronic cameras. Two 13-graduated counter current gray scales are arranged on a gray background (D = 0.75), the gray scales being graduated logarithmically. Related to the densities of the gray scales: gamma = 0.45, related to the transmission values (brightness): gamma = 2.2, that being exactly the reciprocal value of gamma = 0.45. The output signal of a optimally gamma-corrected camera yields two 13-gratuated counter current linear step signals.

The contrast range of the gray scales is 200 : 1.

The values of the 13-graduated gray scale are as follows:

The density values are based on BaSo4 = 0. Two black fields and a white field are located between the gray scales, the density of the black filed is D > 2.4 (reflectance < 0.5 %). The density of the white filed is D = 0.05 (reflectance = 89.9 %).

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Suzie Xia
International Sales Dept.
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Shenzhen ThreeNH Technology Co., Ltd

Established in 1998, Shenzhen ThreeNH Technology Co., Ltd. is a high-tech enterprise. We research, develop, produce and market photoelectric detection products in photoelectric detection technology field and color management field. After years of intensive research, 3nh has launched NS series spectrophotometer and NH, NR series colorimeter, ISO12233 resolution test chart, optical image test solution and specific standard illuminant which are widely used in plastic, electronic, paint, ink, textile, garment, printing and dyeing, food, medical, cosmetic, optical image test industries and the field of scientific research, school and laboratory.

Our products are exported around the world. We can provide customization service which has been well received by customers.

3nh cherishes talents, focuses on talents. Company brings together many of high-level, high educated professionals. Among them, undergraduate academic staffs of the total number of company accounted for more than 80%; postgraduate staffs of the total number of company accounted for 30%. It involves the fields of photometry, electronic circuit, embedded system, photoelectric detection, mechanical structure design, optical design, application software, lighting technology electronic commerce and internet. 3nh team has strong capability to design, develop and produce on its own. The company has a large number of innovation patents, core technologies and intellectual property rights of 3nh products.

3nh adheres to “people-oriented, customer first, technological innovation, sustainable development” business philosophy to meet customer demand continuously, to create value for customers and to achieve win-win situation and common development.

3nh owns 2666 square meters with the industry's large R & D,production and marketing service base,environmental assessment report,live real shot--R&D center,laboratory,production site, marketing center,reception desk,reception room,conference room,general manager room,Quality control department,ISO quality management center,training center,exhibition center,storage base...