Title :
Design of mid-wave infrared solid catadioptric optical system
Author :
Linyao Yu ; Qun Wei ; Huhai Jiang ; Tianyi Zhang ; Chao Wang ; Ruifei Zhu
Author_Institution :
Changchun Inst. of Opt., Fine Mech. & Phys., Changchun, China
Abstract :
In order to reduce the difficulty of fixing the R-C reflective infrared system and enhance the stability of the second mirror, a compact structure is presented here composed of two transmittable aspheric surfaces and two reflective conicoid surfaces. The four surfaces were manufactured from a single Germanium lens. The two reflective surfaces formed by coating the inner reflect films were assembled in one lens which makes the installation of the two mirrors easier and the structure of the second mirror more stable. A design of mid-wave infrared compact imaging system is presented with a spectral range chosen as 3.7-4.8μm. The effective focal length is 90mm. The field of view for the lens is 4.88°×4.88°. It has good imaging capability with transmit function of all field of view more than 0.55 close to the diffraction limitation.
Keywords :
antireflection coatings; aspherical optics; germanium; infrared imaging; lenses; light reflection; light scattering; light transmission; mirrors; optical design techniques; optical films; optical materials; Ge; R-C reflective infrared system; compact structure; diffraction limitation; effective focal length; field of view; imaging capability; inner reflect film coating; mid-wave infrared compact imaging system design; mid-wave infrared solid catadioptric optical system; mirror installation; reflective conicoid surfaces; second mirror stability; second mirror structure; single Germanium lens; size 90 mm; spectral range; transmit function; transmittable aspheric surfaces; wavelength 3.7 mum to 4.8 mum; Adaptive optics; Lenses; Mirrors; Optical design; Optical diffraction; Optical imaging; Optical reflection;
Conference_Titel :
Information Science and Technology (ICIST), 2013 International Conference on
Conference_Location :
Yangzhou
Print_ISBN :
978-1-4673-5137-9
DOI :
10.1109/ICIST.2013.6747807
