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Method for improving resolution ratio of microscope objective lens

A technology of microscope objective lens and resolution, applied in the field of microscope objective lens, to achieve the effect of improving imaging quality, high resolution and reducing cost

Inactive Publication Date: 2019-08-30
NINGBO YONGXIN OPTICS
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Problems solved by technology

Therefore, in the process of using the oil lens, researchers often have various troubles and inconveniences

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  • Method for improving resolution ratio of microscope objective lens

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Embodiment

[0023] As shown in the figure, a method for improving the resolution of the microscope objective lens starts from the object side and sets the objective lens to consist of the first single lens L1, the second single lens L2, the third single lens L3, the fourth single lens L4, the fifth single lens The single lens L5, the sixth single lens L6, the seventh single lens L7 and the eighth single lens L8 are composed of the third single lens L3 and the fourth single lens L4 cemented together to form the first doublet lens CL11, and the fifth single lens L5 and the sixth single lens L6 form the second doublet lens CL12, the first single lens L1, the second single lens L2 and the first doublet lens CL11 form the first lens group G1 with positive refractive power as a whole, the second The doublet lens CL12, the seventh single lens L7, and the eighth single lens L8 constitute the second lens group G2 having negative refractive power as a whole. In a preferred example, the focal length...

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Abstract

The invention discloses a method for improving resolution ratio of a microscope objective lens. The method is characterized in that starting from the object side, the objective lens is set to be composed of a first lens group G1 and a second lens group G2, wherein the first lens group G1 is integrally provided with positive refractive power, and the second lens group G2 is integrally provided withnegative refractive power; the microscope objective lens meets the following conditions: |f1 / fobj| is not smaller than 0.5 and not greater than 10, wherein fobj is the focal length of the microscopeobjective lens, and f1 is the focal length of the first lens set; when in use, water is used as a medium between the surface of the first lens group G1 and an object-side sample, and the method has the advantages that the lens with specific parameters is adopted to form the objective lens of the microscope, so that high resolution ratio is kept, the observation sample is not polluted, and the microscope objective lens is easy to process after the experiment is finished.

Description

technical field [0001] The invention relates to a microscope objective lens, in particular to a method for improving the resolution of the microscope objective lens. Background technique [0002] With the deepening of scientific research such as biomedicine, the microscope is particularly important as an important scientific research tool, and the microscope objective lens, which is one of the core components of the microscope, has become more prominent. When scientific researchers or school teachers and students use microscopes, they often need to magnify the observation sample at a high magnification and at the same time want to obtain a higher resolution. At present, the high magnification of the objective lens is usually 100 times, and the resolution of the objective lens is determined by its numerical aperture (the larger the numerical aperture, the higher the resolution), that is, NA=n sinθ, when the medium is air, n=1, Then NA<1, if you want to further improve the...

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Application Information

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IPC IPC(8): G02B21/33G02B21/02
CPCG02B21/02G02B21/33
Inventor 崔志英岳国强张磊刘小俊章奕清丁彩玉
Owner NINGBO YONGXIN OPTICS
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