Electronics Optics & Control, Volume. 20, Issue 12, 88(2013)
A Passive Optical Athermalization Design of Middle Wavelength Infrared Optical System
A method for passive optical athermalization design of middle wavelength infrared optical system with multiple lenses is introducedand an athermalized middle wavelength infrared dualFOV optical system was designed.The optical system contains a zoom objective system and a secondary imaging systemand adopts the technology of passive athermalization optical design.The zoom function is achieved by moving a set of optical components (2 elements) axially.A passive athermalization optical design is presented by using crystal materials Si and Geand two aspherical surfaces.The results show that the infrared zoom optical system in the 4.5~5.1 μm wavelength possesses a compact structure100% cold shield efficiencyand better image quality in the temperature range from -60 ℃ to +70 ℃thereby the correctness and feasibility of the design method are proved.
Get Citation
Copy Citation Text
CHEN Jianfa, WANG Helong, LIU Xin. A Passive Optical Athermalization Design of Middle Wavelength Infrared Optical System[J]. Electronics Optics & Control, 2013, 20(12): 88
Category:
Received: Jan. 31, 2013
Accepted: --
Published Online: Dec. 17, 2013
The Author Email: