Open AccessStudy on hyperspectral detection system with the harmonic diffractive element in infrared dual-band
Author(s) -
Quan Sun,
Bin Yu,
Zhaoqi Wang,
Guoguang Mu,
Zhenwu Lu
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.756
Subject(s) - hyperspectral imaging , optics , infrared , zoom , optical transfer function , multi band device , physics , window function , diffraction , harmonic , resolution (logic) , wavelength , wavefront , spectral density , computer science , telecommunications , acoustics , artificial intelligence , antenna (radio) , lens (geology)
In this paper, the application of harmonic diffractive elementHDE in the infrared hyperspectral detection system is investigated based on the special large dispersion capability of HDE and window character of infrared bands. The fundamental principle of the new infrared hyperspectral imaging is described, and a design sample is presented. It is shown that the resolution is improved and the optical power received is enlarged. The rectification of the ray aberrations in both band has been simultaneously accomplished. Wave front aberrations are less than 1/4 wavelength,and the modulation transfer function of the dual-band in every zoom focus location approaches or attains the diffraction limit of 20 cycles/mm.