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Proceedings Paper

Design and realization of CMOS image sensor
Author(s): Jian Xu; Zexin Xiao
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Paper Abstract

A project was presented that instrumental design of an economical CMOS microscope image sensor. A high performance, low price, black-white camera chip OV5116P was used as the core of the sensor circuit; Designing and realizing peripheral control circuit of sensor; Through the control on dial switch to realize different functions of the sensor chip in the system. For example: auto brightness level descending function on or off; gamma correction function on or off; auto and manual backlight compensation mode conversion and so on. The optical interface of sensor is designed for commercialization and standardization. The images of sample were respectively gathered with CCD and CMOS. Result of the experiment indicates that both performances were identical in several aspects as follows: image definition, contrast control, heating degree and the function can be adjusted according to the demand of user etc. The imperfection was that the CMOS with smaller field and higher noise than CCD; nevertheless, the maximal advantage of choosing the CMOS chip is its low cost. And its imaging quality conformed to requirement of the economical microscope image sensor.

Paper Details

Date Published: 3 March 2008
PDF: 9 pages
Proc. SPIE 6621, International Symposium on Photoelectronic Detection and Imaging 2007: Photoelectronic Imaging and Detection, 662108 (3 March 2008); doi: 10.1117/12.790589
Show Author Affiliations
Jian Xu, Guilin Univ. of Electronic Technology (China)
Zexin Xiao, Guilin Univ. of Electronic Technology (China)


Published in SPIE Proceedings Vol. 6621:
International Symposium on Photoelectronic Detection and Imaging 2007: Photoelectronic Imaging and Detection

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