Share Email Print
cover

Proceedings Paper • new

Lens mount for a refractive optics cooled by pulse tube cryocooler
Author(s): Zhaoli Wang; Jingtao Liang; Miguang Zhao; Houlei Chen; Juan Wang; Lingjiao Wei
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

Integration of optics inside a detector-dewar-cooled-assembly (DDCA) is a good strategy to miniaturized infrared cameras in order to provide small payload systems with thermal vision capability for both military and civilian applications. The optical additional mass has to be very small in order to limit the cool-down time of the DDCA. However, reducing the mass of these optical systems results in a decrease of the resolution and impaction on the image quality, making them difficult to use in the high-performance and high sensitivity applications. In order to achieve better optical performances, a classical optical system which consisted of four lenses was integrated in the DDCA. By optimizing the heat transfer of the lens mount and using a miniature pulse tube cryocooler(MPTC) as the cooling source, the cooling time of the system was reduced. The lens mount and the lenses were cooled down to 80K in an hour by the MPTC with 45W input power. The total mass to be cooled is 100 g, where the mass of the lenses is 15 g. In the later prototypes, the mass of the lens mount can be greatly reduced by optimizing the installation of the detector and the lens mount, and the cooling time of the cryogenic camera integrated with the high-performance optical system can be reduced to an acceptable range by using the lens mount heat transfer optimization method described in this paper.

Paper Details

Date Published: 12 March 2019
PDF: 6 pages
Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110232G (12 March 2019); doi: 10.1117/12.2520319
Show Author Affiliations
Zhaoli Wang, Technical Institute of Physics and Chemistry (China)
Univ. of Chinese Academy of Sciences (China)
Jingtao Liang, Technical Institute of Physics and Chemistry (China)
Miguang Zhao, Technical Institute of Physics and Chemistry (China)
Houlei Chen, Technical Institute of Physics and Chemistry (China)
Juan Wang, Technical Institute of Physics and Chemistry (China)
Lingjiao Wei, Technical Institute of Physics and Chemistry (China)


Published in SPIE Proceedings Vol. 11023:
Fifth Symposium on Novel Optoelectronic Detection Technology and Application
Qifeng Yu; Wei Huang; You He, Editor(s)

© SPIE. Terms of Use
Back to Top