Achromatic and sharp real imaging of a point by a single aspheric lens
Applied Optics, Vol. 22, Issue 20, pp. 3242-3248 (1983)
http://dx.doi.org/10.1364/AO.22.003242
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Abstract
By a single lens (two refracting surfaces, one dispersive medium) an achromatic real point image can be obtained. We show how such a lens brings a large aperture bundle of axial-parallel rays to the same sharp focus for two wavelengths, that is, for two refractive-index values. The normal of one of the two refracting surfaces is, in general, discontinuous at the axis. The numerical aperture which is practically attainable can be enhanced by off-axis steps in the refracting surfaces. The design principles for such lenses, computational formulas, and examples of results are given. Limitations and further possibilities are discussed.
© 1983 Optical Society of America
Citation
Günter Schulz, "Achromatic and sharp real imaging of a point by a single aspheric lens," Appl. Opt. 22, 3242-3248 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-20-3242
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