Wide Field-of-View Imaging With Wavefront Coded Diffractive Photon Sieves

IEEE Photonics Journal

卷:8

Xiaonan Zhao¹  Chinhua Wang¹  Jingpei Hu¹  Feng Xu¹  Aijiao Zhu¹ 

[1] College of Physics, Optoelectronics, and Energy and Collaborative Innovation Center of Suzhou Nano Science and Technology, Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province, and Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou, China;

关键词: Diffractive imaging;    field-of-view (FOV);    wavefront coded photon sieves.;   

DOI  :  10.1109/JPHOT.2016.2620808

来源: DOAJ

【 摘 要 】

We report a demonstration of a wide field-of-view (FOV) imaging with a wavefront coded diffractive photon sieves. In conventional diffractive photon sieves (or other diffractive optical elements), clear imaging can only be achieved within near-zero FOV due to the strict interference conditions imposed by diffraction imaging. It is found that a wide FOV imaging with diffractive elements can be achieved by using a wavefront coded diffractive pattern that generates equal focusing power for light rays coming from a wide incident FOV. Experimental validation was performed using an ultraviolet (UV)-lithography fabricated wavefront coded photon sieves of a focal length of 500 mm and a diameter of 50 mm at a design wavelength of 632.8 nm. Results show that a wide half-FOV of 4° can be obtained with the wavefront coded photon sieves, compared to that of 0.5° with the conventional one.

【 授权许可】

Unknown