NDLI: A design on a control method of a new type of focal plane shutter

Content Provider	IEEE Xplore Digital Library
Author	Leng Xue Liu Ming Zheng Li-na Zhou Jiu-fei Zhang Hong-wen Zhang Ji-chao
Copyright Year	2010
Description	Author affiliation: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, China (Leng Xue; Liu Ming; Zheng Li-na; Zhou Jiu-fei; Zhang Hong-wen; Zhang Ji-chao)
Abstract	In order to ensure appropriate exposure time, and no exposure while electric charge is transferring after taking a photograph, it is necessary to have the shutter mechanism cooperate with CCD for area CCD aerial cameras. The ground object illumination has a wide range which is from 4000Lx to 100000Lx, so a shutter which is high efficient and a continuous stepless adjustment are also required. This paper introduces the fundamental principle, structural design and control procedure about this new focal plane shutter. Under the control of DSP, the velocity of shutter curtain governed by the shutter motor can be not only precisely controlled, but also the durability and the reliability are increased. The experiment results have shown that this new shutter has the higher stability of movement, long life span with more than 105 operating times, a wide range of exposure time from1/ 50s to 1/ 320s(depending on the slit width) and the exposure error is less than 10%. With the CCD gain adjustment, the performance of this shutter is fully satisfied with the requirements of area CCD aerial cameras.
Starting Page	293
Ending Page	296
File Size	811555
Page Count	4
File Format	PDF
ISBN	9781424479573
e-ISBN	9781424479580
DOI	10.1109/CMCE.2010.5610151
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Charge coupled devices Power measurement USA Councils Films Power amplifiers Exposure uniformity Lead Cameras Lead-lag control Exposure time Focal plane shutter Incremental encoder
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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