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Proceedings Paper

Hyperspectral imaging sensor array based on diffractively driving infrared beams with chosen wavelength into designated subsensors
Author(s): Yong Qu; Xinyu Zhang; Hongshi Sang; Tianxu Zhang; Changsheng Xie
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Paper Abstract

In this paper, an integrated hyperspectral imaging sensor array technology by using arrayed diffractive micro-optics elements for driving infrared beams with chosen wavelength into designated subsensors is proposed. The diffractive optical element, which can be treated as a functioned microlens here, collect the incident Gaussian beam or other types of infrared beams out-from targets and then concentrate the incident light into desired monochromatic point pattern or arbitrary distinct hyperspectral image at the imaging plane based on phase transformation and diffraction propagation process. For the incident infrared beams with different wavelengths, the arrayed diffractive micro-optics elements is designed based on the diffractive integral theory, and the weighted iterative phase retrieval algorithm is modeled so as to obtain the needed phase distribution, and therefore the frequency spectrum of the incident beams can be separated locally in different locations over the focal plane according to designated wavelength. We can then achieve beam-splitting imaging by placing sensor array (4×4 pixels per subsensor) on the focal plane at locations that correspond to different wavelengths. Simulation results demonstrate that the designed elements can successfully implement both the functions of demultiplexing different wavelength beams and focusing each component at a pre-designated position simultaneously.

Paper Details

Date Published: 26 October 2013
PDF: 10 pages
Proc. SPIE 8917, MIPPR 2013: Multispectral Image Acquisition, Processing, and Analysis, 89170A (26 October 2013); doi: 10.1117/12.2032160
Show Author Affiliations
Yong Qu, Huazhong Univ. of Science and Technology (China)
Xinyu Zhang, Huazhong Univ. of Science and Technology (China)
Hongshi Sang, Huazhong Univ. of Science and Technology (China)
Tianxu Zhang, Huazhong Univ. of Science and Technology (China)
Changsheng Xie, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8917:
MIPPR 2013: Multispectral Image Acquisition, Processing, and Analysis
Xinyu Zhang; Jianguo Liu, Editor(s)

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