阅读说明：本技术 一种物镜和目镜焦距连续可调的光学变焦显微镜 (Optical zoom microscope with continuously adjustable focal lengths of objective lens and ocular lens ) 是由 李磊 匡凤麟 王琼华 于 2019-09-17 设计创作，主要内容包括：本发明提出一种物镜和目镜焦距连续可调的光学变焦显微镜。该显微镜由自适应变焦物镜、自适应变焦目镜和控制系统组成。初始条件下,控制系统改变施加在自适应变焦物镜与自适应变焦目镜内部的自适应透镜上的电压,将两者的焦距调整至特定值,此时显微镜实现低倍放大；在增大显微镜的放大倍率时,控制系统向自适应变焦物镜连续发送信号,使其焦距变短,放大倍率变大,后工作距离变长,实现连续光学变焦,像平面将沿光轴向自适应变焦目镜方向移动,与此同时,控制系统使自适应变焦目镜的焦点与像平面重合。自适应变焦物镜的后工作距离可变,释放了自适应透镜的变焦能力,同时自适应变焦目镜与自适应变焦物镜结合的方式提升了整个显微镜的变焦能力。(The invention provides an optical zoom microscope with continuously adjustable focal lengths of an objective lens and an eyepiece. The microscope consists of a self-adaptive zoom objective lens, a self-adaptive zoom eyepiece and a control system. Under the initial condition, the control system changes the voltage applied to the adaptive lens in the adaptive zoom objective lens and the adaptive zoom eyepiece and adjusts the focal lengths of the adaptive zoom objective lens and the adaptive zoom eyepiece to a specific value, and at the moment, the microscope realizes low magnification; when the magnification of the microscope is increased, the control system continuously sends signals to the adaptive zoom objective lens to enable the focal length of the adaptive zoom objective lens to be shortened, the magnification of the adaptive zoom objective lens to be increased, the rear working distance of the adaptive zoom objective lens to be lengthened, continuous optical zooming is achieved, the image plane moves towards the direction of the adaptive zoom eyepiece along the optical axis, and meanwhile the control system enables the focus of the adaptive zoom eyepiece to be overlapped with the image plane. The back working distance of the self-adaptive zoom objective lens is variable, the zoom capability of the self-adaptive lens is released, and meanwhile, the zoom capability of the whole microscope is improved in a mode of combining the self-adaptive zoom eyepiece lens and the self-adaptive zoom objective lens.)

1. The optical zoom microscope with the continuously adjustable focal lengths of the objective lens and the ocular lens comprises a self-adaptive zoom objective lens, the self-adaptive zoom ocular lens and a control system, and is characterized in that the self-adaptive zoom objective lens consists of a glass lens and a self-adaptive lens, the self-adaptive zoom ocular lens consists of the glass lens and the self-adaptive lens, and the control system changes the voltage applied to the self-adaptive lens inside the self-adaptive zoom objective lens and the self-adaptive zoom ocular lens to realize the change of the magnification.

2. An optical zoom microscope with continuously adjustable focal lengths of the objective lens and the eyepiece as claimed in claim 1, characterized in that the adaptive zoom objective consists of a glass lens andMeach self-adaptive lens is composed of more than or equal to 1M≤8。

3. An optical zoom microscope as claimed in claim 1, in which the objective lens and eyepiece lens are continuously adjustable in focal length, the adaptive zoom eyepiece consisting of a glass lens andNeach self-adaptive lens is composed of more than or equal to 1N≤2。

4. An optical zoom microscope with continuously adjustable focal lengths of objective and eyepiece lenses as claimed in claim 1, wherein the adaptive lens is a liquid lens, a polymer lens, a liquid crystal lens, or the like.

5. An optical zoom microscope with continuously adjustable focal lengths of objective and eyepiece as claimed in claim 1, wherein the adaptive lens is driven by electrowetting, dielectrophoresis and electromagnetic forces.

Technical Field

The present invention relates to microscopes, and more particularly to an optical zoom microscope with continuously adjustable focal lengths of the objective lens and the eyepiece.

Background

The microscope plays an important role in the fields of scientific research, production and life, such as medical inspection, life science, microstructure processing and the like. Microscopes are often required to have different magnifications when viewing different sized objects such as cells, microorganisms and microstructures. The traditional microscope has different magnifications, and observation under different magnifications can be realized in a discrete zooming mode. In addition to variable magnification, with the progress of scientific research, fields such as life science and the like have higher requirements on the real-time property, continuity and the like of microscopic observation. However, when the traditional microscope is observed under the condition of converting from low magnification to high magnification, the objective lens is often required to be manually and mechanically converted and refocused, the continuous optical zooming capability is not provided, and the continuity of observation is affected by the discrete zooming mode; the continuous optical zoom microscope has complex structural design and limited variation range of magnification, and does not meet the requirement of scientific research on microscopic observation. Therefore, a microscope having both a high magnification and a continuous optical zoom function is still lacking at present.

Disclosure of Invention

The invention provides an optical zoom microscope with continuously adjustable focal lengths of an objective lens and an eyepiece. As shown in fig. 1, the microscope includes an adaptive zoom objective, an adaptive zoom eyepiece, and a control system.

As shown in fig. 2, under the initial condition, the control system changes the voltage applied to the adaptive lens inside the adaptive zoom objective lens and the adaptive zoom eyepiece, and changes the focal lengths of the adaptive zoom objective lens and the adaptive zoom eyepiece at the same time, so that the observed object is magnified by the adaptive zoom objective lens and then imaged on the image plane, and magnified by the adaptive zoom eyepiece and then viewed by human eyes; when the magnification of the zoom microscope is increased, the control system continuously sends signals to the adaptive zoom objective lens, the focal length of the adaptive zoom objective lens is shortened, the magnification is increased, the rear working distance is lengthened, continuous optical zooming is realized, the image plane moves towards the direction of the adaptive zoom eyepiece along the optical axis, and meanwhile, the control system enables the image formed by the adaptive zoom objective lens to coincide with the focus of the adaptive zoom eyepiece. At this time, the observed object is magnified by the adaptive zoom objective lens and the adaptive zoom eyepiece to form an image with a larger magnification. The rear working distance of the self-adaptive zoom objective lens is variable in the zooming process, so that the zooming capability of the self-adaptive lens is released, and meanwhile, the zooming capability of the whole microscope is improved by combining the self-adaptive zoom objective lens and the self-adaptive zoom eyepiece lens, and high zoom ratio observation can be realized.

Preferably, the adaptive zoom objective consists of a glass lens andMeach self-adaptive lens is composed of more than or equal to 1M≤8。

Preferably, the adaptive zoom eyepiece is made of a glass lens andNeach self-adaptive lens is composed of more than or equal to 1N≤2。

Preferably, the adaptive lens is a liquid lens, a polymer lens, a liquid crystal lens, or the like.

Preferably, the adaptive lens can be driven by electrowetting, dielectrophoresis, electromagnetic force, and the like.

Drawings

FIG. 1 is a schematic diagram of an optical zoom microscope with continuously adjustable focal lengths of objective lenses and ocular lenses according to the present invention.

FIG. 2 is a schematic diagram of an optical zoom microscope with continuously adjustable focal lengths of an objective lens and an eyepiece according to the present invention.

FIG. 3 is a diagram showing the relationship between the magnification of the adaptive zoom objective lens, the magnification of the adaptive zoom eyepiece lens and the driving voltage of the optical zoom microscope with the objective lens and the eyepiece focal length continuously adjustable.

The reference numbers in the figures are as follows:

the system comprises an eye 1, an adaptive zoom eyepiece 2, an adaptive zoom objective 3, an observed object 4, a control system 5, an adaptive lens 6, a glass lens 7 and an image plane 8.

It should be understood that the above-described figures are merely schematic and are not drawn to scale.

Detailed Description

The present invention will be further described in detail with reference to the following examples of an optical zoom microscope with continuously adjustable focal lengths of the objective lens and the eyepiece. It should be noted that the following examples are only for illustrative purposes and should not be construed as limiting the scope of the present invention, and that the skilled person in the art may make modifications and adaptations of the present invention without departing from the scope of the present invention.

An optical zoom microscope with continuously adjustable focal lengths of an objective lens and an eyepiece lens in the embodiment comprises an adaptive zoom objective lens, an adaptive zoom eyepiece lens and a control system. The adaptive zoom objective lens is composed of 4 adaptive lenses and a glass lens, wherein the adaptive lens is a liquid lens and is used for achieving a zoom function, the driving mode of the adaptive lens is electrowetting driving, and the glass lens is used for increasing focal power. The adaptive zoom eyepiece consists of 2 adaptive lenses and a glass lens, wherein the adaptive lens in the embodiment adopts a liquid lens for realizing a zoom function, the driving mode is electrowetting driving, and the glass lens is used for increasing the focal power. The control system is used for outputting a driving voltage signal to the adaptive zoom objective lens and the liquid lens in the adaptive zoom eyepiece.

When the driving voltage of the 4 adaptive lenses is 17.5V, 7.6V, 7.5V and 58.2V, the effective focal length of the adaptive zoom objective lens is 17.5mm, and the magnification is 10 times; the driving voltage on 2 liquid lenses in the self-adaptive zoom eyepiece is 59.6V and 10.4V, the effective focal length of the self-adaptive zoom eyepiece is 50mm, and the magnification is 5 x. The total magnification of the microscope was 50 ×. When the driving voltage of the 4 adaptive lenses is 60.1V, 19.8V, 7.4V and 7.5V, the effective focal length of the adaptive zoom objective lens is 3mm, and the magnification is 100 times; the driving voltage on 2 liquid lenses in the self-adaptive zoom eyepiece is 11.8V and 57.2V, the effective focal length of the self-adaptive zoom eyepiece is 15mm, and the magnification is 15 x. The total magnification of the microscope is 1500 ×. The microscope combines the self-adaptive zoom objective lens and the self-adaptive zoom eyepiece to realize continuous optical zooming, and can realize 30-time high zoom ratio observation from 50 multiplied to 1500 multiplied. The relationship between the magnification factor between 50 x and 1500 x and the driving voltage is shown in fig. 3.