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Micromachines
Volume 14
Issue 3
10.3390/mi14030657
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Article

Design, Fabrication and Analysis of a Hybrid-Order Monolithic Imaging Diffractive Lens on a Germanium Substrate

by
Yidi Zheng
1,2,
Boping Lei
1,*,
Bin Fan
1,*,
Junfeng Du
1,
Jiang Bian
1,
Lihua Wang
1,
Yuchen Liu
1,
Shanghong Guan
1,
Dun Liu
1,
Qian Luo
1,
Hu Yang
1,
Hao Zhang
1,2 and
Chao Hu
1,2
1
Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610200, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
Micromachines 2023, 14(3), 657; https://doi.org/10.3390/mi14030657
Submission received: 16 February 2023 / Revised: 9 March 2023 / Accepted: 11 March 2023 / Published: 15 March 2023
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Abstract

Diffractive optical elements are gradually replacing some conventional optical elements and becoming a key component of optical systems due to their unique phase modulation function. However, the imaging performance will be reduced due to the fact that this single-sided microstructured lens still produces chromatic aberration. Therefore, the key issue for the application of diffractive optical elements in optical systems is the reduction of chromatic aberration, and diffractive lenses with double-sided microstructures are proposed as a solution. This research describes the design and analysis of a 70-mm-diameter, 296-mm-focal-length double-sided microstructured hybrid-order monolithic imaging diffractive lens operating in the mid-wave infrared region (3.7–4.7 μm). The design minimizes chromatic aberration by up to 30 times compared to a standard harmonic diffractive lens and improves the image performance of a single-lens optical system operating in the infrared range. Experiments indicate that this design is capable of achieving single-lens imaging with high sensitivity for optical systems with a measured NETD ≤ 50 mK. The analysis of the experiments yielded suggestions for future research.
Keywords: diffractive optical elements; chromatic aberration; infrared optical system; single-lens imaging; NETD diffractive optical elements; chromatic aberration; infrared optical system; single-lens imaging; NETD

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MDPI and ACS Style

Zheng, Y.; Lei, B.; Fan, B.; Du, J.; Bian, J.; Wang, L.; Liu, Y.; Guan, S.; Liu, D.; Luo, Q.; et al. Design, Fabrication and Analysis of a Hybrid-Order Monolithic Imaging Diffractive Lens on a Germanium Substrate. Micromachines 2023, 14, 657. https://doi.org/10.3390/mi14030657

AMA Style

Zheng Y, Lei B, Fan B, Du J, Bian J, Wang L, Liu Y, Guan S, Liu D, Luo Q, et al. Design, Fabrication and Analysis of a Hybrid-Order Monolithic Imaging Diffractive Lens on a Germanium Substrate. Micromachines. 2023; 14(3):657. https://doi.org/10.3390/mi14030657

Chicago/Turabian Style

Zheng, Yidi, Boping Lei, Bin Fan, Junfeng Du, Jiang Bian, Lihua Wang, Yuchen Liu, Shanghong Guan, Dun Liu, Qian Luo, and et al. 2023. "Design, Fabrication and Analysis of a Hybrid-Order Monolithic Imaging Diffractive Lens on a Germanium Substrate" Micromachines 14, no. 3: 657. https://doi.org/10.3390/mi14030657

APA Style

Zheng, Y., Lei, B., Fan, B., Du, J., Bian, J., Wang, L., Liu, Y., Guan, S., Liu, D., Luo, Q., Yang, H., Zhang, H., & Hu, C. (2023). Design, Fabrication and Analysis of a Hybrid-Order Monolithic Imaging Diffractive Lens on a Germanium Substrate. Micromachines, 14(3), 657. https://doi.org/10.3390/mi14030657

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