阅读说明：本技术 多功能物镜转盘 (Multifunctional objective lens turntable ) 是由 赵磊 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种多功能物镜转盘,物镜转盘上安装有物镜转盘旋转电机模组、电动对焦模组、自动光阑模组以及物镜识别模组,上述模组协同工作,可实现物镜的精准切换,而不会发生物镜空转的问题；可实现各个物镜的精确对焦,实现N个物镜的精确齐焦,同时可用于深度成像；可实现对比度与亮度自动调节,提高成像的灵活性；可自动实现明场暗场的自动切换,在大数值孔径下实现暗场成像。(The invention discloses a multifunctional objective turntable.A rotary motor module of the objective turntable, an electric focusing module, an automatic diaphragm module and an objective lens identification module are arranged on the objective turntable, and the modules work in cooperation to realize accurate switching of objective lenses without the problem of idle rotation of the objective lenses; the system can realize the accurate focusing of each objective lens, realize the accurate parfocal of N objective lenses, and can be used for depth imaging; the contrast and brightness can be automatically adjusted, and the imaging flexibility is improved; the automatic switching of a bright field and a dark field can be automatically realized, and dark field imaging is realized under a large numerical aperture.)

1. The utility model provides a multi-functional objective carousel, its characterized in that includes objective carousel (1), objective carousel rotating electrical machines module (2), electronic module (3) of focusing, automatic diaphragm module (4) and objective discernment module (5), the objective carousel is used for installing objective, realize the rotation of objective carousel through objective carousel rotating electrical machines module, in each through-hole position of objective carousel, arrange electronic module and the automatic diaphragm module of focusing, realize the independent focusing and the diaphragm regulation of single objective, at the in-process of objective carousel switching objective, use objective discernment module, judge the accuracy that objective switches.

2. The objective turret according to claim 1, wherein the objective turret (1) is circular in shape, a hollow bearing (1 a) is installed in the center, N through holes are uniformly distributed in the objective turret, N is an integer greater than 0, the through holes are provided with fixing threads for installing the electric focusing module, objective number electrodes (1 b) are arranged beside the N through holes, the center of the through holes is equal to the center of the objective turret, and the periphery of the objective turret is composed of uniform gears (1 c).

3. The objective turret according to claim 1, wherein the objective turret rotation motor module (2) comprises a microscope holder (2 a), a bearing fixing shaft (2 b) and a rotation motor (2 c), the microscope holder is fixed to the microscope body, the bearing fixing shaft is fixed to the hollow bearing assembly of the objective turret, the gear of the rotation motor is coupled to the gear of the objective turret, and the rotation of the rotation motor drives the rotation of the objective turret.

4. The multifunctional objective turntable according to claim 1, wherein the electric focusing module (3) comprises a micro focusing motor (3 a) and a retractable lens barrel (3 b), and is installed at the through hole of the objective turntable, and the rotation of the micro focusing motor drives the retractable lens barrel to change the length of the lens barrel, thereby realizing electric focusing.

5. The objective turret according to claim 1, wherein the automatic aperture module (4) comprises an optical aperture (4 a) and a micro-aperture motor (4 b), the rotation of the micro-aperture motor drives the change of the light transmission diameter of the aperture.

6. A multi-functional objective lens turret according to claim 1, wherein the objective lens identification module (5) is installed with N identification electrodes, the objective lens identification module is installed at the center of the objective lens turret, and the objective lens identification module is installed with a current source and a voltage sensor for detecting the terminal voltages of different identification electrodes.

7. A multifunctional objective turntable provides an imaging method with automatic and accurate switching of N objectives, independent automatic focusing, automatic adjustment of contrast and brightness, and bright field and dark field switching, and specifically comprises the following steps:

s1: at the moment of automatic and accurate switching of the objective lens, a rotating motor of the objective lens turntable rotating motor module drives a gear of the objective lens turntable to rotate the objective lens turntable, and simultaneously, voltage information of the objective lens identification module is read, and the objective lens turntable is stopped from rotating when the target objective lens rotates to a preset position according to the voltage information indication;

s2: when each objective lens is used for imaging for the first time, the miniature focusing motor in the electric focusing module is electrically driven to finish the accurate focusing of each objective lens, the rotation scale of the current miniature focusing motor is recorded, and the objective lens focusing is finished at a high speed by using the recorded rotation scale after the objective lens is switched; in the process of carrying out planar imaging at different depths, sequentially adjusting an electric focusing module of the imaging objective lens to drive a telescopic lens barrel, realizing the change of the length of the lens barrel, changing the focal plane of the imaging objective lens and finishing planar imaging at different depths;

s3: in the imaging process, a miniature diaphragm motor of the automatic diaphragm module is electrically driven to rotate, so that the light transmission diameter of the diaphragm is changed, the diameter of imaging light passing through an objective lens is changed, the light quantity reaching the optical digital camera is further changed, and the automatic adjustment of the contrast and the brightness is realized;

s4: in a dark field imaging mode, the illumination light illuminates an imaging object in an oblique incidence mode, the miniature diaphragm motor of the automatic diaphragm module is electrically driven to rotate, the diaphragm is reduced, only partial scattered light is passed, the oblique incidence light is prevented from reaching the optical digital camera, and the mode switching from a bright field to a dark field is realized; in the mode switching process from the dark field to the bright field, the micro diaphragm motor of the automatic diaphragm module is electrically driven to rotate, so that the diaphragm is enlarged.

Technical Field

The invention belongs to the technical field of optical microscopic imaging, and particularly relates to a multifunctional objective turntable.

Background

The microscope is an instrument widely applied to the fields of industry, medical treatment and inspection and detection, and is equipment capable of efficiently and quickly acquiring microscopic images of objects. Currently, in order to improve the performance of a microscope, a large number of researchers upgrade the performance of the microscope by using a novel optical-mechanical computation method and a novel optical-mechanical computation device, for example, an automatic stage is used to realize automatic sample scanning, and a microlens array is added in front of a digital camera of the microscope to realize light field imaging. The automation of microscopes and multi-modality imaging performance is thus constantly increasing.

In a microscope system, the core of the imaging module is the objective lens. The importance of the objective turntable as an important optical device for clamping the objective is self-evident. In the invention patent, the optoelectromechanical technology is utilized to realize the multifunction of the objective turntable and further improve the automation of the microscope.

Disclosure of Invention

The invention aims to provide a multifunctional objective turntable, aiming at the defects of the prior art, and the automatic diaphragm module, the electric focusing module, the objective turntable rotating motor module and the objective identification module are added on the objective turntable, so that the functions of automatically changing the diaphragm diameter of an objective, automatically focusing a single objective and accurately switching the objective are realized.

Therefore, the invention adopts the following technical scheme:

the objective lens turntable comprises an objective lens turntable (1), an objective lens turntable rotating motor module (2), an electric focusing module (3), an automatic diaphragm module (4) and an objective lens identification module (5), wherein the objective lens turntable is used for mounting an objective lens, the objective lens turntable rotating motor module is used for realizing the rotation of the objective lens turntable, the electric focusing module and the automatic diaphragm module are arranged at each through hole position of the objective lens turntable, the independent focusing and diaphragm adjustment of a single objective lens are realized, and the objective lens identification module is used for judging the accuracy of objective lens switching in the process of switching the objective lens by the objective lens turntable.

The appearance of the objective turntable (1) is circular, a hollow bearing (1 a) is installed in the center, N through holes are uniformly distributed in the objective turntable, N is an integer larger than 0, fixing threads are formed in the through holes and used for installing an electric focusing module, objective serial number electrodes (1 b) are arranged beside the N through holes, the circle centers of the through holes are equal to the circle center of the objective turntable, and the periphery of the objective turntable is composed of uniform gears (1 c).

Objective carousel rotating electrical machines module (2) comprises microscope mounting (2 a), bearing fixed axle (2 b) and rotating electrical machines (2 c), and the microscope mounting is fixed with the microscope fuselage, and the bearing fixed axle is fixed with the cavity bearing combination of objective carousel, and rotating electrical machines's gear combines with the gear of objective carousel, and rotating electrical machines's rotation has driven the rotation of objective carousel.

The electric focusing module (3) is composed of a micro focusing motor (3 a) and a telescopic lens barrel (3 b), and is arranged at a through hole of the objective turntable, the rotation of the micro focusing motor drives the telescopic lens barrel to realize the length change of the lens barrel, and further, the electric focusing is realized.

The automatic diaphragm module (4) comprises an optical diaphragm (4 a) and a miniature diaphragm motor (4 b), and the rotation of the miniature diaphragm motor drives the change of the light passing diameter of the diaphragm.

The objective lens identification module (5) is provided with N identification electrodes, the objective lens identification module is arranged at the center of the objective lens turntable, and the objective lens identification module is provided with a current source and a voltage sensor for detecting the terminal voltage of different identification electrodes.

Furthermore, the imaging light beam collected by the objective lens enters the microscope body after passing through the through hole of the objective lens turntable.

Furthermore, in the objective turntable, N electric focusing modules and N automatic diaphragm modules need to be installed respectively for independently controlling the N objectives.

Furthermore, N objective serial number electrodes in the objective turntable respectively have different electrical parameters, and orientation reading of the objective can be realized by reading arrangement of the electrical parameters after the identification module of the objective identification module is paired.

The invention also provides an imaging method for automatically and accurately switching N objective lenses, independently and automatically focusing, automatically adjusting contrast and brightness and switching bright field and dark field, which specifically comprises the following steps:

s1: at the moment of automatic and accurate switching of the objective lens, a rotating motor of the objective lens turntable rotating motor module drives a gear of the objective lens turntable to rotate the objective lens turntable, and simultaneously, voltage information of the objective lens identification module is read, and the objective lens turntable is stopped from rotating when the target objective lens rotates to a preset position according to the voltage information indication;

s2: when each objective lens is used for imaging for the first time, the miniature focusing motor in the electric focusing module is electrically driven to finish the accurate focusing of each objective lens, the rotation scale of the current miniature focusing motor is recorded, and the objective lens focusing is finished at a high speed by using the recorded rotation scale after the objective lens is switched; in the process of carrying out planar imaging at different depths, sequentially adjusting an electric focusing module of the imaging objective lens to drive a telescopic lens barrel, realizing the change of the length of the lens barrel, changing the focal plane of the imaging objective lens and finishing planar imaging at different depths;

s3: in the imaging process, a miniature diaphragm motor of the automatic diaphragm module is electrically driven to rotate, so that the light transmission diameter of the diaphragm is changed, the diameter of imaging light passing through an objective lens is changed, the light quantity reaching the optical digital camera is further changed, and the automatic adjustment of the contrast and the brightness is realized;

s4: in a dark field imaging mode, the illumination light illuminates an imaging object in an oblique incidence mode, the miniature diaphragm motor of the automatic diaphragm module is electrically driven to rotate, the diaphragm is reduced, only partial scattered light is passed, the oblique incidence light is prevented from reaching the optical digital camera, and the mode switching from a bright field to a dark field is realized; in the mode switching process from the dark field to the bright field, the micro diaphragm motor of the automatic diaphragm module is electrically driven to rotate, so that the diaphragm is enlarged.

The invention has the beneficial effects that:

through the structural arrangement of the invention, a multifunctional objective turntable is realized, an objective turntable rotating motor module, an electric focusing module, an automatic diaphragm module and an objective lens identification module are arranged on the objective turntable, and the modules work cooperatively, so that the objective lens can be switched accurately without the problem of idle rotation of the objective lens; the system can realize the accurate focusing of each objective lens, realize the accurate parfocal of N objective lenses, and can be used for depth imaging; the contrast and brightness can be automatically adjusted, and the imaging flexibility is improved; the automatic switching of a bright field and a dark field can be automatically realized, and dark field imaging is realized under a large numerical aperture.

Drawings

Fig. 1 is a schematic view of a multi-functional objective turret.

Fig. 2 is a schematic view of an objective turret.

Fig. 3 is a schematic view of the objective turntable rotation motor module.

FIG. 4 is a schematic view of an electric focusing module.

FIG. 5 is a schematic view of an automatic diaphragm module.

Fig. 6 is a schematic view of an objective lens recognition module.

Detailed Description

In order to make the public more clearly understand the technical spirit and the advantages of the present invention, the applicant shall make the following detailed description by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are only in form and not substantial, shall be regarded as the technical scope of the present invention.