Design of infrared diffractive telescope imaging optical systems

ZhouFeng Zhang; BingLiang Hu; QinYe Yin; YongJun Xie; FuZeng Kang; YanJun Wang

doi:10.1117/12.2201125

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15 October 2015 Design of infrared diffractive telescope imaging optical systems

ZhouFeng Zhang, BingLiang Hu, QinYe Yin, YongJun Xie, FuZeng Kang, YanJun Wang

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Proceedings Volume 9676, AOPC 2015: Optical Design and Manufacturing Technologies; 96760Z (2015) https://doi.org/10.1117/12.2201125
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

Diffractive telescope is an updated imaging technology, it differs from conventional refractive and reflective imaging system, which is based on the principle of diffraction image. It has great potential for developing the larger aperture and lightweight telescope. However, one of the great challenges of design this optical system is that the diffractive optical element focuses on different wavelengths of light at different point in space, thereby distorting the color characteristics of image. In this paper, we designs a long-wavelength infrared diffractive telescope imaging system with flat surface Fresnel lens and cancels the infrared optical system chromatic aberration by another flat surface Fresnel lens, achieving broadband light(from 8μm-12μm) to a common focus with 4.6° field of view. At last, the diffuse spot size and MTF function provide diffractive-limited performance.

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ZhouFeng Zhang, BingLiang Hu, QinYe Yin, YongJun Xie, FuZeng Kang, and YanJun Wang "Design of infrared diffractive telescope imaging optical systems", Proc. SPIE 9676, AOPC 2015: Optical Design and Manufacturing Technologies, 96760Z (15 October 2015); https://doi.org/10.1117/12.2201125

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