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27 June 1996 Compact infrared zoom lens for the 3- to 5-μm spectral band
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Abstract
The results of a comprehensive design study for the development of a compact infrared zoom lens suitable for use in guided munitions are discussed. The continuously variable zoom of the lens offers significant operational performance benefits to weapon systems using fixed or switchable FOV optics. Two practical zoom lens systems were designed that showed potential to meet typical guided munitions system requirements by utilizing in the first system conventional surfaces and a combination of conventional and diffractive surfaces in the second system. Significant weight savings, enhanced optical performance, and excellent athermalization over conventional lenses were realized. The optical performance over the entire 4:1 zoom range and 5-20 degrees field-of-view is near-diffraction limit while maintaining a constant F-number.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Barry Johnson, Allen Mann, Patrick J. Reardon, and Bruce R. Peters "Compact infrared zoom lens for the 3- to 5-μm spectral band", Proc. SPIE 2744, Infrared Technology and Applications XXII, (27 June 1996); https://doi.org/10.1117/12.243463
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