Acta Photonica Sinica, Volume. 46, Issue 11, 1122004(2017)
Designfor Cooled Dual-band Infrared Refractive-Diffractive Hybrid Optical System of Athermalization and Wide FOV
On the basis of the dual-band athermal theory, a cooled dual-band infrared refractive-diffractive hybrid optical system of athermalized and wide field of view was designed. The system consists of 4 lenses and introduces only 1 diffractive surface and 1 aspherical surface, the full field of view is 80.2°, the focal length is 8 mm, F number is 2, the operating wavelength range is 3.5~4.8μm and 8~12μm, and the cold stop efficiency is 100%. The solutions of 4 separate thin lenses were obtained by analyzing dual-band achromatic and athermalized theory. Further, establishing the material model of athermalized dual-band optic system and choosing the optical materials properly. According to requirements, the dual-band athermal optical system with temperature of -40℃ to 60℃ was designed with the use of optical passive. The reasults prove that the optical system obtains a good image quality during -40℃ to 60℃, and realizes athermalization.
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TAO Zhi, WANG Min, XIAO Wei-jun, GUO Wang-kai. Designfor Cooled Dual-band Infrared Refractive-Diffractive Hybrid Optical System of Athermalization and Wide FOV[J]. Acta Photonica Sinica, 2017, 46(11): 1122004
Received: Dec. 29, 2016
Accepted: --
Published Online: Dec. 8, 2017
The Author Email: Zhi TAO (taozhieu@163.com)