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US 8,009,369 B2Granted
Apochromatic lens
AssigneeAstrium GmbH
InventorsWolfgang Holota, Gerald Mathe
Life of this patent
Estimating the term…
Abstract
An apochromatic lens with an aperture and exclusively refractive optical elements, comprising a plurality of lenses arranged in lens groups along an optical axis, wherein lenses of different materials are provided and wherein the lenses respectively comprise one of the following listed materials: calcium fluoride (CaF2), synthetic quartz (SiO2) or another radiation-resistant optical material.
Claims20
An apochromatic lens, comprising
- at least one aperture and
- exclusively refractive optical elements, comprising at least two lenses arranged in lens groups along an optical axis,
- wherein the at least two lenses comprise different materials, and
- wherein the different materials are selected from
- calcium fluoride (CaF2),
- synthetic quartz (SiO2), and
- another radiation-resistant optical material.
4 more elements
A method for correcting transverse chromatic aberrations over an image field, comprising:
- bundling light through an apochromatic lens to produce a quasi distortion free image, wherein the apochromatic lens comprises,
- at least one aperture and
- exclusively refractive optical elements, comprising at least two lenses arranged in lens groups along an optical axis,
- wherein the at least two lenses comprise different materials, and
- wherein the different materials are selected from
- calcium fluoride (CaF2),
- synthetic quartz (SiO2), and
- another radiation-resistant optical material.
5 more elements
Dependencies are inferred from the claim text.