Digital microscope objective lens with high magnification factor and large zoom ratio

Abstract

The invention discloses a digital microscope objective lens with high magnification factor and large zoom ratio. The digital microscope objective lens comprises a first lens group (2) with positive focal power, a second lens group (3) with positive focal power, a third lens group (4) with negative focal power and a fourth lens group (5) with negative focal power which are arranged between an object surface (1) and an image surface (6) in sequence; the first lens group (2) and the fourth lens group (5) are fixed groups; the second lens group (3) is a zoom group, and different magnification factors and continuous zooming of the magnification factors are realized by moving along an optical axis O; the third lens group (4) is a compensation group, and performs magnification compensation on magnification factor change by moving along the optical axis O. The magnification factor of the objective lens is as low as 4x to 6x times and as high as 32x to 48x times, and the zoom ratio is more thaneight times, so that the objective lens can be used for observing details of objects of different sizes, and overcomes the common defect that the magnification selection of a high-magnification microscope is limited at present.

Description

technical field [0001] The invention relates to the technical field of microscopes, in particular to a digital microscope objective lens with high magnification and large zoom ratio. Background technique [0002] A microscope is an optical device that magnifies tiny objects or tiny parts of objects at high magnifications for easy observation or detection. Continuous zoom microscope refers to a microscope whose magnification can be continuously changed within a certain range, which can more conveniently observe the microstructure of objects of different sizes. [0003] The current continuous zoom microscope is mainly a stereo microscope, and its zoom ratio can reach 10 times or more, but most of the magnifications are in the range of 0.5× to 7×, and the magnification is relatively low. [0004] Other types of microscopes such as biological or metallurgical microscopes rarely have zoom objectives. In order to achieve the observation needs of different details of the object, ...

AI Technical Summary

Problems solved by technology

[0007] The main advantage of the digital microscope is that the traditional optical microscope can only be used by one person, it is difficult to share the images of the microscope, and it is often necessary to use special equipment to take pictures of the images in the microscope

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