Share Email Print
cover

Proceedings Paper • new

Design of a mid-wavelength infrared optical system based on high frame rate measuring
Author(s): Jing Duan; Kai Liu; Qiusha Shan; Peipei Yan; Kai Jiang
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In order to effectively improve the frame of mid-wavelength infrared measuring system, based on a 320×256 cooled staring focal plane array(FPA) detector, pixel size 30μm×30μm, a special optical system combined with time-sharing exposure technology was designed. In this paper, the working wavelength is 3μm~5μm, the temperature range is -30°C~+40°C, this system can realize 200mm focal length, the F-number is 4 and the full field of view is 3.44°. A re-imaging refractive system was adopted in this designed optical system consists of main optics and projection components. First of all, the working principle of the measuring system was introduced in detail. Secondly, on the basis of variety of the distance and temperature, a focusing lens was presented in this system to adjust to produce a clear image. Last but not the least, to improve image quality and environment adaptability, the analysis of temperature change and narcissus effect was described particularly. The design results prove that at the spatial frequency of 17 lp/mm, the MTF of the optical system is greater than 0.58(the axis MTF of the optical is greater than 0.65), the system can offer a high resolution and excellent images. The measuring system implements 400fps measuring system consisting of four 100fps detectors.

Paper Details

Date Published: 7 November 2018
PDF: 8 pages
Proc. SPIE 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 1083213 (7 November 2018); doi: 10.1117/12.2508315
Show Author Affiliations
Jing Duan, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Kai Liu, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Qiusha Shan, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Peipei Yan, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Kai Jiang, Xi'an Institute of Optics and Precision Mechanics, CAS (China)


Published in SPIE Proceedings Vol. 10832:
Fifth Conference on Frontiers in Optical Imaging Technology and Applications
Junhao Chu; Wenqing Liu; Huilin Jiang, Editor(s)

© SPIE. Terms of Use
Back to Top