Relay lens is an important element for infrared system coupled with imaging fiber bundle. According to the basic composition and structural characteristics of infrared system coupled with imaging fiber bundle, this paper put forward the general principle and method of its relay lens design, then a material relay lens has been designed by ZEMAX with definite performance index. It has a working spectral coverage from 3.7μm to 4.8μm, focal length of 33.5mm, magnification of -0.6, linear field of view of 12mm, objective numerical aperture of 0.15. It is objective telecentric and is adapted to the relay of infrared detector and imaging fiber bundle. The total lens has two aspheric surfaces and only four pieces of singlet. Its MTF value is 0.7@17 lp/mm, and distortion is -0.19%. After necessary tolerance analysis and structural design, this relay lens has been fabricated. The optical performances fulfill the design requirements and clear images have been got by this lens. These prove the validity and rationality of the design method. It gives a foundational guidance for such relay lens design.
[1]
杨建峰 Yang Jianfeng,et al.
Study of Push-broom Infrared Fiber Image Transmission System
,
2014
.
[2]
Arnold Daniels,et al.
Fiber optically coupled infrared focal plane array system for use in missile warning receiver applications
,
1999,
Defense, Security, and Sensing.
[3]
Fu Li,et al.
Experimental study on the push-broom infrared imaging system based on line-plane-switching fiber bundle
,
2016,
Other Conferences.
[4]
Joel Bernier,et al.
Infrared pushbroom camera breadboard using off-the-shelf 2D array of detector
,
1994,
Other Conferences.
[5]
Gang Wang,et al.
Infrared scanning imaging system based on IR fiber bundle
,
2010,
SPIE/COS Photonics Asia.