Acta Optica Sinica, Volume. 33, Issue 11, 1122001(2013)
Optical Design of Harmonic Diffractive Infrared Dual-Band and Dual-Field System
On the basis of harmonic diffractive element theory and zoom theory, a dual-band and dual-field infrared optical system employing harmonic diffractive element is designed. The optical configuration is based on the axial motion of a lens group along the optical axis for changing field of view. The image quality evaluation are listed. Evaluation results show that the system has five lens and realizes a zoom of 40~80 mm in dual-band, which satisfing 100% cold shield efficiency. The modulaiton transform function value is over 0.5 at the Nyquist frequency for the waveband of 3.7~4.3 μm and over 0.3 at the Nyquist frequency for the waveband of 8.7~11 μm. The system is characterized by dual-band, high resolution, miniaturization and simple structure.
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Li Yan, Zhang Bao, Hong Yongfeng, Zhao Chunlei. Optical Design of Harmonic Diffractive Infrared Dual-Band and Dual-Field System[J]. Acta Optica Sinica, 2013, 33(11): 1122001
Category: Optical Design and Fabrication
Received: Mar. 26, 2013
Accepted: --
Published Online: Oct. 20, 2013
The Author Email: Yan Li (liyan19880217@163.com)