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http://dx.doi.org/10.3807/COPP.2017.1.4.344

Optical Design of an Image-space Telecentric Two-mirror System for Wide-field Line Imaging  

Lee, Jong-Ung (Department of Laser and Optical Information Engineering, Cheongju University)
Kim, Youngsoo (Electro-Optics Team, Hanwha Systems Co., Ltd.)
Kim, Seo Hyun (Electro-Optics Team, Hanwha Systems Co., Ltd.)
Kim, Yeonsoo (Agency for Defense Development)
Kim, Hyunsook (Agency for Defense Development)
Publication Information
Current Optics and Photonics / v.1, no.4, 2017 , pp. 344-350 More about this Journal
Abstract
We present a new design approach and an example design for an image-space telecentric two-mirror system that has a fast f-number and a wide-field line image. The initial design of the telecentric mirror system is a conventional axially symmetric system, consisting of a flat primary mirror with fourth-order aspheric deformation and an oblate ellipsoidal secondary mirror to correct spherical aberration, coma, and field curvature. Even though in the optimized design the primary mirror is tilted, to avoid ray obstruction by the secondary mirror, the image-space telecentric two-mirror system shows quite good imaging performance, for a line imager.
Keywords
Two-mirror system; Image-space telecentricity; Flat field aplanat; Wide field mirror system; Hyperspectral imaging;
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