Mr. Binzhou Zhan Profile

Binzhou Zhan

at Guilin Univ of Electronic Technology

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Proceedings Article | 20 November 2009 Paper

Design of wide field and high resolution video lens

Ze-xin Xiao, Binzhou Zhan, Haimei Han

Proceedings Volume 7511, 75111L (2009) https://doi.org/10.1117/12.837933

KEYWORDS: Video, Computer aided design, CCD image sensors, Modulation transfer functions, Image sensors, Lens design, Charge-coupled devices, Image processing, Sensors, CMOS sensors

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Online detecting is increasingly used in industrial process for the requirement of product quality improving. It is a trend that the "machine detecting" with "machine version + computer intelligence" as new method replaces traditional manual "eye observation". The essential of "machine detecting" is that image of object being collected with high resolution video lens on sensor panel of photoelectric (CCD ,CMOS) and detecting result being automatically gained by computer after the image saved and processed. "Machine detecting" is developing rapidly with the universal reception by enterprises because of its fine accurateness, high efficiency and the real time. Video lens is one of the important components of machine version system. Requirements of wide field and high resolution enlarged the complexity of video lens design. In this paper a design case used in visible light with field diameter Φ32mm, β=-0.25× and NA'=0.15. We give design parameters of the video lens which obtained with theoretically calculating and Oslo software optimization: MTF>0.3 in full field and 215lp/mm, distortion <0.05%.This lens has an excellent optic performance to match with 1.3 million pixels 1/2"CCD, and a high performance price ratio for being consist of only 7 single lens in the way of 5 units.

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