NDLI: Design and analysis of auto-focus assembly for spaceborne remote sensing camera

Content Provider	IEEE Xplore Digital Library
Author	Wei Chen YaLin Ding ShouWen Hui Xu Gao
Copyright Year	2011
Description	Author affiliation: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Changchun, China (Wei Chen) \|\| Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China (YaLin Ding; ShouWen Hui; Xu Gao)
Abstract	Spaceborne remote sensing camera may be out of focus when the environment and photographic distance changes. In order to get higher ground sampled distance for the camera, based on the experience gained from the development of a remote sensing camera, working principle of auto-focus assembly control system was discussed. Time of waveform extraction was reduced. It sets force an auto-focus assembly that uses cam and line guide rail in order to move the lens group. The motion error of the auto-focus assembly was difficult to be eliminated and would affect on the focusing accuracy of the spaceborne remote sensing camera directly. So it was analyzed at both ends of the focusing structure. The CCD detector can keep stable when the remote sensing camera is imaging. The motion error was tested to verify the validity of the simulation result and it is less than 0.01mm. Its accuracy meets using demand. The focusing method of moving focal plane is suitable for spaceborne remote sensing camera.
Starting Page	4234
Ending Page	4236
File Size	239867
Page Count	3
File Format	PDF
ISBN	9781457703201
e-ISBN	9781457703218
DOI	10.1109/ICECC.2011.6067580
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-09
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cameras Optical imaging Auto-focus Adaptive optics Time of waveform extraction Optical sensors Step length Assembly Remote sensing Cam Lenses
Content Type	Text
Resource Type	Article

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