13 June 1989 Aberrations: Their Effect On Off-Axis Beam Steering
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Abstract
The effect of aberrations on off-axis beam steering for multi-aperture systems was qualitatively investigated. A new expression analogous to Goodman's Thin Lens is proposed which shows the beam degradation that occurrs at angles (with respect to the optic axis) much greater than five degrees for a thin lens, and two degrees for a thick lens. This expression was then applied to three multi-aperture configurations as a way to correctly predict the field-of-view for various optical systems. Analytical predictions supported by computational and experimental results are included. Although the beam degradation as the field-of-view or field angle is increased has a dramatic effect on the image quality, the power loss as the field angle increases will be the major factor in the design of a system of this type.
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C. N. Walton, J A Lupo, S. K. Rogers, "Aberrations: Their Effect On Off-Axis Beam Steering", Proc. SPIE 1049, Recent Trends in Optical Systems Design and Computer Lens Design Workshop II, (13 June 1989); doi: 10.1117/12.951419; https://doi.org/10.1117/12.951419
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