title: Correction of vignetting and distortion errors induced by two-axis light beam steering.
abstract: A mirror facet's angle correction approach is presented for eliminating pupil plane distortions and sub-field image vignetting in the image mapping spectrometry (IMS). The two-axis light reflection problem on the image mapper is solved and a rigorous analytical solution is provided. The cellular fluorescence imaging experiment demonstrates that, with an angle-corrected image mapper, the acquired image quality of spectral channels has been significantly improved compared to previous IMS images. The proposed mathematical model can also be used in solving general two-axis beam steering problems for instruments with active optical mirrors.
authors: Rice University, Department of Bioengineering, MS 142, 6100 Main Street, Houston, Texas 77005.
authors: Liang
authors: L
authors: Gao
authors: Rice University, Department of Bioengineering, Department of Electrical and Computer Engineering, MS 142, 6100 Main Street, Houston, Texas 77005.
authors: Tomasz S
authors: TS
authors: Tkaczyk
keywords: image mapping spectrometry; spectral imaging; two-axis light reflection