11 May 2017 Digital correction of aberrations introduced by tilted plane-parallel plates in convergent beams
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Abstract
Compact multispectral imagers often require lightweight, inexpensive, flat beamsplitters working in convergent light. Unfortunately, the use of tilted plane parallel plates (PPPs) as an optomechanical design technique is severely restricted due to the aberrations that PPPs generate in non-collimated spaces. We propose a digital correction method of the image blur introduced by tilted flat beamsplitters working in convergent light. The deconvolution-based results are compared against some known non-symmetric aberration correctors advocated by classic, optical hardware based solutions. This method offers a promising solution for reduction of size, weight and cost of high-performance compact multispectral imaging systems.
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C. Greenhalgh, S. Szapiel, M. Thorpe, S. Atalick, G. Marshall, "Digital correction of aberrations introduced by tilted plane-parallel plates in convergent beams", Proc. SPIE 10181, Advanced Optics for Defense Applications: UV through LWIR II, 101810F (11 May 2017); doi: 10.1117/12.2264648; https://doi.org/10.1117/12.2264648
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