Acta Optica Sinica, Volume. 35, Issue 7, 722003(2015)

Small Distortion Panoramic Annular Lens Design with Q-Type Aspheres

Zhou Xiangdong* and Bai Jian
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    Implemented Q-type aspheres interface in Zemax by means of user defined surface dynamic link library (DLL), and then design of a panoramic annular lens (PAL) with Q-type aspheres worked in the visible spectrum is presented. The designed PAL’s half field of view (FOV) in vertical plane is 30°~110°, focal length is -1.25 mm, F Number is about 5 with a total length of 28.7 mm, which includes six spherical lenses and one lens with two Qtype aspheres. The performances of the designed optics are also analyzed. F-Theta distortions at the whole fields are less than 1%, and modulation transfer function (MTF) values are greater than 0.5 at the Nyquist spatial frequency of 83 lp/mm that is approaching to the diffraction limit. For validating Q-type aspheres’s superiority in PAL design, an even aspherical PAL with the same parameters has been designed to compare with the Q-type ones. The results show that, under the same computing platform, Q-type aspheric polynomial coefficients have 3~6 more significant digits than the corresponding even aspheric ones which can effectively reduce the computer truncated error in the optimization process. It’s help to speed up the design progress and enhance the precision of manufacturing and inspection of aspheric optical components.

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    Zhou Xiangdong, Bai Jian. Small Distortion Panoramic Annular Lens Design with Q-Type Aspheres[J]. Acta Optica Sinica, 2015, 35(7): 722003

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    Paper Information

    Category: Optical Design and Fabrication

    Received: Jan. 15, 2015

    Accepted: --

    Published Online: Jun. 26, 2015

    The Author Email: Xiangdong Zhou (xdzhou@zju.edu.cn)

    DOI:10.3788/aos201535.0722003

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