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- W2247106568 abstract "Developed for the Army's White Sands Missile Range, this precision zoom lens consists of 16 refractive elements with three stationary lens groups and two moving lens groups. Using optical compensation, the focus and zoom are simultaneously maintained for focal lengths from 750 mm (f/4) to 3800 mm (f/14) at a resolution of 100 line pairs/mm (lp/mm) and an image field of 24 mm. The throughput of the lens is ~85%, and the lens is optimized over the visible waveband (485 nm to 650 nm). The zoom lens images objects at distances from 0.7 km to 100 km and is thermally compensated over a temperature range of 20 °F to 120 °F. Optical assembly was accomplished in about a week." @default.
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- W2247106568 date "2006-05-05" @default.
- W2247106568 modified "2023-09-23" @default.
- W2247106568 title "Precision refractive zoom lens with long focal length" @default.
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- W2247106568 doi "https://doi.org/10.1117/12.666751" @default.
- W2247106568 hasPublicationYear "2006" @default.
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