Share Email Print
cover

Proceedings Paper

Optical design of long focal length and wide field on an aerial CCD camera
Author(s): Xiaowei Cheng; Ying Che; Changxi Xue
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Reconnaissance range and image resolution are increasingly paid more attention to with the development of airborne reconnaissance, the optical system should be in characteristics of long focal length and wide field. At the same flight altitude, the wider field can enlarge ground covering width and increase the reconnaissance range Longer focal length can improve ground sample distance (GSD). Merits and advantages of reflecting system, catadioptric system and refractive system were represented, with the help of code V software, a refractive system was designed to meet the requirements, Optical material with special dispersion was adopted to remove second order spectrum. It has a focal length of 903mm, with the field angle of 4.5°×4.5°, the size of CCD pixels is 10um×10um, spectral scope is from 0.43um to 0.74um, modulation transfer function(MTF) is all above 0.5 in whole field when spatial frequency is at 50lp/mm, distortion is less than 1%, image quality reaches the diffraction limit. The system with long focal length and wide field can satisfy the demand of the wide ground overlay area and high resolution, and can apply in high altitude photograph.

Paper Details

Date Published: 21 May 2009
PDF: 6 pages
Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72821K (21 May 2009); doi: 10.1117/12.830878
Show Author Affiliations
Xiaowei Cheng, Changchun Univ. of Science and Technology (China)
Ying Che, Changchun Univ. of Science and Technology (China)
Changxi Xue, Changchun Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7282:
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies

© SPIE. Terms of Use
Back to Top