23 September 2015 Dual-band infrared lenses design
Author Affiliations +
Problems of designing dual band lenses were considered. The main problem is color correction in two spectral bands simultaneously because of dispersion issues between two bands for all optical materials. Another challenge is designing the lens with a few optical elements as possible. It results in complication of design dual band lenses compared with single-band lenses design. Dual band lenses design methods using two and three optical materials were discussed. All material combinations in MWIR and LWIR bands for most used materials have been investigated. F/number of single components in infrared lenses has limitation because of high f/number of an overall lens. In the agreement with this fact, we have provided a criterion for selection of good combinations. The results of calculations were tabulated. Manufacturability of all material combinations has been analyzed, and the best combination was obtained. Various designs for the best combinations have been produced. Also, image quality and tolerance sensitivity analysis of these designs was made, so we also provided a criterion for selection of good designs for the same material combination.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. S. Garshin, A. V. Bakholdin, "Dual-band infrared lenses design", Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96261B (23 September 2015); doi: 10.1117/12.2191116; https://doi.org/10.1117/12.2191116

Lens design



Long wavelength infrared

Infrared lenses




Athermal MWIR objectives
Proceedings of SPIE (September 15 1995)
Non Ge optics and low cost electronics designs for LIR...
Proceedings of SPIE (January 23 2003)
Importance of dispersion tolerances in infrared lens design
Proceedings of SPIE (January 01 1991)
GASIR 1: a promising material for dual waveband systems
Proceedings of SPIE (July 12 2006)
Design, Performance, And Selection Of Kodak's "EKTRAMAX" Lens
Proceedings of SPIE (November 29 1979)

Back to Top