Title :
Optical Design of Cassegrain System with Asperical Surfaces on CCD Airborne Remote Sensing Camera
Author :
Qian, Yixian ; Fan, Changjiang
Author_Institution :
Inst. of Inf. Opt., Zhejiang Normal Univ., Jinhua, China
Abstract :
Based on the Ritchey-Chretien system, a refractive/reflective system with four aspheric surfaces (including two high order aspheric surfaces) was designed with the help of CODE V software. It has a focal length of 880mm, F number of 5.6, waveband of 0.43-0.7um, and field of view reaches 3°. It is shown that the value of modulation transfer function is higher than 0.5 at 60lp/mm, image quality reaches the diffraction limit. The system with simpler structure, smaller size and lighter weight, can be used in high altitude airborne remote sensing.
Keywords :
aspherical optics; optical design techniques; optical modulation; refractive index; CCD airborne remote sensing camera; CODE V software; Cassegrain system; Ritchey-Chretien system; asperical surfaces; aspheric surfaces; image quality; modulation transfer function; optical design; refractive/reflective system; Integrated optics; Mirrors; Optical design; Optical diffraction; Optical distortion; Optical imaging; Optical sensors;
Conference_Titel :
Multimedia Technology (ICMT), 2010 International Conference on
Conference_Location :
Ningbo
Print_ISBN :
978-1-4244-7871-2
DOI :
10.1109/ICMULT.2010.5631373
