HIGH-SPEED LENS Russian patent published in 2002 - IPC

Abstract RU 2181206 C2

FIELD: optics. SUBSTANCE: high-speed lens includes two isolated positive meniscuses separated by air space, facing image with concavity and made of material with refractive index over 3.3 and dispersion factor exceeding 800 for spectral range from 8 to 14 μ. Second surface of first lens is aspherical. Radius of first optical surface is equal to radius of fourth optical surface. EFFECT: creation of high-speed lens of simplified design with diminished longitudinal dimension having high-quality image. 1 dwg, 1 tbl

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RU 2 181 206 C2

Authors

Shcheglov S.I.

Dates

2002-04-10—Published

2000-06-19—Filed