Optics and Precision Engineering, Volume. 18, Issue 8, 1773(2010)
Design of compact Offner hyperspectral imaging system with Féry prism
In order to decrease the volume and quality of an imaging system and to correct the smile of a spectral image, a novel Offner hyperspectral imaging system with Féry prisms is presented. In this system,a pairs of Féry curved surface prisms are located at two arms of the Offner relay configuration and the light beam passes through the prisms twice to be dispersed. Therefore,the system shows a lighter and smaller structure as compared with conventional one when it gains a given dispersion value. To decrease the nonlinear dispersion of spectral channel in Visible-Near Infrared (VNIR), a couple of anti-dispersion flint Féry prisms are introducted into this system again. Then,two kinds of hyperspectral imaging systems applied to VNIR and Short-Wave Infrared (SWIR) channels are designed, respectively.The analytical results indicate the smiles and keystones of the two spectral imaging systems are less than 0.1 pixel and 0.045 pixel, respectively, and the nonlinearity is less than 0.1, which satisfies the requirements of airborne or spaceborne hyperspectral imagers.
Get Citation
Copy Citation Text
CHENG Xin, HONG Yong-feng, ZHANG Bao, XUE Qing-sheng. Design of compact Offner hyperspectral imaging system with Féry prism[J]. Optics and Precision Engineering, 2010, 18(8): 1773
Category:
Received: Jul. 22, 2009
Accepted: --
Published Online: Dec. 7, 2010
The Author Email: Xin CHENG (chengxin0301214@163.com)
CSTR:32186.14.