Acta Optica Sinica, Volume. 32, Issue 6, 622002(2012)
Aspheric Optical Design of an Imaging Spectrometer Based on Acousto-Optic Tunable Filter
Based on the principle of acousto-optic tunable filter (AOTF), the optical system of an imaging spectrometer is designed. The spectral range of the system covers 0. 44~0.78 μm. An even aspheric surface is used to improve the imaging quality, optical transmissivity and simplify the lens structure. A telecentric optical arrangement is designed using a doublet lens for the fore-optical system. And for the rear imaging lens, a triplet lens is used which contains an aspheric surface. The aspheric surface and its location are optimized based on the primary aberrations theory of aspheric. The system takes the +1 order diffracted beams for imaging. The modulation transfer function (MTF) of the optical system is better than 0.6 at the spatial frequency of 32 lp/mm and the tolerance is moderate.
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Xiong Shengjun, Zhang Ying, Zhao Huijie, Li Xudong, Zhou Pengwei. Aspheric Optical Design of an Imaging Spectrometer Based on Acousto-Optic Tunable Filter[J]. Acta Optica Sinica, 2012, 32(6): 622002
Category: Optical Design and Fabrication
Received: Oct. 11, 2011
Accepted: --
Published Online: May. 16, 2012
The Author Email: Shengjun Xiong (xiong0515@sina.com)