Abstract

This paper shows that the secondary spectrum in a two-component system made from glasses with ordinary dispersion behavior can be eliminated by computer modelling. The necessary conditions for this are an air gap between the components that is commensurable with the focal length of the system and large longitudinal chromatism of the second component. Optical layouts are given, along with the aberrations of apochromatic objectives consisting of glasses with ordinary dispersion behavior.

© 2012 OSA

Apochromatic telescope without anomalous dispersion glasses

Roman Duplov
Appl. Opt. 45(21) 5164-5167 (2006)

Glass selection for airspaced apochromats using the Buchdahl dispersion equation

Robert D. Sigler
Appl. Opt. 25(23) 4311-4320 (1986)

Thermal compensation design of achromatic and apochromatic optical systems using a 3D glass chart

Zhiguang Ren, Xuyang Li, Zhihai Pang, Wei Wang, Jinyang Wei, Jiawen Zhao, and Kaizhong Yao
Appl. Opt. 62(17) 4543-4550 (2023)

Diffractive-refractive hybrid corrector for achro- and apochromatic corrections of optical systems

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Further Considerations on the Selection of Optical Glasses in Apochromats

N. v. d. W. Lessing
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