27 November 2017 Thick lens chromatic effective focal length variation versus bending
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Proceedings Volume 10590, International Optical Design Conference 2017; 105900C (2017) https://doi.org/10.1117/12.2292745
Event: International Optical Design Conference - IODC 2017, 2017, Denver, United States
Longitudinal chromatic aberration (LCA) can limit the optical performance in refractive optical systems. Understanding a singlet’s chromatic change of effective focal leads to insights and methods to control LCA. Long established, first order theory, shows the chromatic change in focal length for a zero thickness lens is proportional to it's focal length divided by the lens V number or inverse dispersion. This work presents the derivation of an equation for a thick singlet's chromatic change in effective focal length as a function of center thickness, t, dispersion, V, index of refraction, n, and the Coddington shape factor, K. A plot of bending versus chromatic focal length variation is presented. Lens thickness does not influence chromatic variation of effective focal length for a convex plano or plano convex lens. A lens's center thickness'influence on chromatic focal length variation is more pronounced for lower indices of refraction.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Scott Sparrold, "Thick lens chromatic effective focal length variation versus bending", Proc. SPIE 10590, International Optical Design Conference 2017, 105900C (27 November 2017); doi: 10.1117/12.2292745; https://doi.org/10.1117/12.2292745


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