Wide-spectrum flat-field apochromatic microscope objective

Abstract

The invention discloses a wide-spectrum flat-field apochromatic microscope objective. The wide-spectrum flat-field apochromatic microscope objective belongs to an infinity conjugate objective, and comprises a first part, a second part and a third part which are arranged in sequence, wherein the first part comprises cover glass, a first meniscus lens and a second meniscus lens which are arranged insequence, and the first part provides focal power and reduces numerical aperture for the following part; the second part comprises a first doublet lens, a second doublet lens, a third doublet lens and a triplet lens which are arranged in sequence, and the second part is used for correcting chromatic aberration; the third part comprises a fourth doublet lens, and is used for assisting in complementation of focal power and correcting field curvature. The wide-spectrum flat-field apochromatic microscope objective is large in numerical aperture compared to an objective with the same magnification, increases the brightness of fluorescence microscopy imaging, is wide in spectral range covering most of the visible light and part of the near-infrared light, and finally achieves apochromatism.

Description

technical field [0001] The invention belongs to the technical field of microscopic objective lenses, in particular to a wide-spectrum plan apochromatic microscopic objective lens. Background technique [0002] In recent years, with the development of biomedicine, various researches have higher and higher requirements for microscope objectives. At present, the microscopic objectives used in precision biomedical research basically require flat field and apochromatism. The Chinese patent (Large field of view plan achromatic microscope objective lens, application number 99252126.2) provides a microscopic objective lens, which only corrects chromatic aberration, does not realize apochromatic aberration, and has a small numerical aperture and a narrow spectral range. US Patent US20150248001A1 provides an apochromatic microscopic objective, but it is a microscopic objective with small magnification and relatively large numerical aperture, and the field of view of the image side is...

AI Technical Summary

Problems solved by technology

Chinese patent (Large-field plan achromatic microscope objective lens, application number 99252126.2) provides a microscopic objective lens, which only corrects chromatic aberration, does not realize apochromatic aberration, and has a small numerical aperture and a narrow spectral range

US Patent US20150248001A1 provides an apochromatic microscope objective, but it is a microscopic objective with small magnification and relatively large numerical aperture, and the field of view of the image side is small, only 22mm

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