CN203587877U

CN203587877U - Microscope fast focusing objective table device

Info

Publication number: CN203587877U
Application number: CN201320833744.2U
Authority: CN
Inventors: 金敬福; 陈延坤; 韩丽曼; 卢云; 刘晓娟
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2013-12-17
Filing date: 2013-12-17
Publication date: 2014-05-07
Anticipated expiration: 2023-12-17

Abstract

The utility model discloses a microscope fast focusing objective table device which is composed of components, such as an upper objective table, a base, piezoelectric ceramics execution devices, a preloaded spring, a control unit, etc. According to the utility model, by controlling the independent or synchronous telescopic action of the three piezoelectric ceramics execution devices which are fixed between the upper objective table and the base, the objective table levelness or height can be changed; and the control unit is used to change the inclination direction and the inclination angle of the upper objective table and the lifting and lowering of the upper objective table by adjusting the radial displacement of the direct-current voltage driven piezoelectric ceramics execution devices; The microscope fast focusing objective table device of the utility model can be used in various optical microscopes, such as biological microscopes, integrated microscopes, etc., as the microscope auxiliary device the improve the microscope imaging effect, reduce the focusing operation difficulty. The piezoelectric ceramics execution devices are adopted, so the objective table moving accuracy can reach the magnitude of 0.1mum, the focusing speed reaches the ms magnitude, and the accurate focusing range change of more than 50 mum can be easily realized. The microscope fast focusing objective table device of the utility model has advantages of simple structure and easy operation, and can be used to provide a high-accuracy, fast and accurate focusing scheme for high-magnification microscopic observation.

Description

A kind of microscope objective table device of focusing fast

Technical field

The utility model relates to a kind of microscope objective table device of focusing fast, burnt auxiliary for quick, the high-precision fine setting of optical microscope, belongs to microscope functions expansion utensil.

Technical background

Conventional optical microscope generally adopts and regulates the method for the distance between object lens and sample to realize focusing, its focus adjusting mechanism generally adopts the focus adjustment method that mechanical gear slows down and rack-and-pinion coordinates, exist focusing speed slow and be vulnerable to the when impact of space width of gear drive, the problems such as the bad control of its focusing accuracy, particularly for object lens microscope more than 40X, precisely adjusting focal length a kind of technical ability especially.In addition, under high magnification condition, because object lens mirror is deeply less, the original objective table of microscope and lens barrel verticality have the out-of-flatness of deviation or microslide, sample all can make imaging have subregion situation out of focus, i.e. the phenomenon such as local clear, edge fog.In addition, for the high magnification microexaminations such as scientific research and microorganism detection or multiple plate Overlap-scanning imaging requirements, optical microscope is in the past mainly by improving machining precision, or senior experimenter is pure by experience, completes, and its observation cost is high, and the test duration is long.

The utility model patent is for the poor problem of the out-of-level imaging effect causing of focusing and objective table or sample under the high magnification of conventional optical microscope, based on 3 schemes of adjusting plane levelness and height, utilize piezoelectric ceramic actuator can be fast, angle of inclination and the height displacement of high precision leveling objective table.This objective table device is simple in structure, easy to operate, can be used on the conventional optical microscopes such as biological microscope, Stereo microscope, as the optimization of focusing of microscope function.

Summary of the invention

The purpose of this utility model is for problems such as the time focusing of solving high magnification microexamination are difficult, repeatable accuracy is poor, and a kind of microscope objective table device of focusing is fast provided, and by this device, can effectively improve focusing accuracy and micro-imaging quality.

The utility model is comprised of top objective table, base, preloading spring, coupling bolt, piezoelectric ceramic actuator, steel ball, microslide fixture, control module, the stand of its middle and upper part objective table and base composition Rapid focusing device, piezoelectric ceramic actuator and steel ball are realized the variation of top objective table height, coupling bolt and preloading spring composition preload unit; Top objective table and base carry out supported at three point by three piezoelectric ceramic actuators and three steel balls, steel ball is installed in the recessed ball groove of piezoelectric ceramic actuator, by point, contact and support top objective table simultaneously, by a contact, guarantee that piezoelectric ceramic actuator precisely transmits and be convenient to top objective table to carry out the adjusting of different angles to the anchorage force of top objective table; Piezoelectric ceramic actuator is placed in the piezoelectric ceramic actuator draw-in groove of susceptor surface, and be connected with control module by wire, by control module, regulate the DC voltage at piezoelectric ceramic actuator two ends, independent or the synchronous radial displacement that drives, controls piezoelectric ceramic actuator changes, realize parallel rising, the sinking of the different angles of top objective table and the inclination of direction and top objective table, change the distance of microslide and micro objective, completed microscopical fine setting burnt; Coupling bolt is connected with top objective table by internal thread hole, and coupling bolt head is placed in base coupling bolt groove, and adopts preloading spring to carry out pretension to it; When top objective table sinks, coupling bolt, under the tension force effect of preloading spring, has shortened the reduction time of top objective table and has guaranteed that steel ball contacts with top objective table holding point all the time, the instability while having avoided reducing; Top objective table has light hole, and microslide fixture is fixed on the objective table of top by microslide fixture set bolt.

The beneficial effects of the utility model:

1, the utility model utilize precision high, respond fast, manageable piezoelectric ceramic actuator and support top objective table, by regulating the voltage at piezoelectric ceramic actuator two ends, making it that small radial displacement occur changes, change the distance between sample and object lens, realize parallel rising and the sinking of the different angles of top objective table and the inclination of direction and top objective table.

2, the utility model is owing to adopting piezoelectric ceramic actuator, and objective table mobile accuracy can reach 0.1 μ m level, and focusing speed reaches ms level, and easily realizes the above accurate focusing range of 50 μ m

3, the utility model apparatus structure and simple, convenient, the time is short, precision is high, can be used for that conventional optical microscope realizes fast, the precisely optimization of focusing and the function of leveling.

Accompanying drawing explanation

Fig. 1 is perspective exploded view of the present utility model.

Fig. 2 is the connection diagram between top of the present utility model objective table and base.

Fig. 3 is the schematic diagram of the utility model during for microscope.

Wherein: 1-preloading spring; 2-base; 3-coupling bolt; 4-piezoelectric ceramic actuator draw-in groove; 5-through hole; 6-coupling bolt groove; 7-piezoelectric ceramic actuator; 8-steel ball; 9-microslide; 10-top objective table; 11-microslide fixture; 12-microslide fixture set bolt; 13-light hole; 14-wire; 15-control module; 16-microscope stage; 17-set bolt; 18-microscope; 19-object lens; 20-steel-ball groove; 21-internal thread hole.

Embodiment

Refer to shown in Fig. 1 and Fig. 2, the present embodiment is comprised of top objective table 10, base 2, preloading spring 1, coupling bolt 3, piezoelectric ceramic actuator 7, steel ball 8, microslide fixture 11, control module 15, its middle and upper part objective table 10 and base 2 form the stand of Rapid focusing device, piezoelectric ceramic actuator 7 and steel ball 8 are realized the variation of top objective table 10 height, and coupling bolt 3 and preloading spring 1 form preload unit; Top objective table 10 and base 2 carry out supported at three point by three piezoelectric ceramic actuators 7 and three steel balls 8.As shown in Figure 2, steel ball 8 is installed in the recessed ball groove of piezoelectric ceramic actuator, by point, contact and support top objective table 10 simultaneously, by a contact, guarantee that piezoelectric ceramic actuator 7 precisely transmits the anchorage force of top objective table 10 and is convenient to top objective table 10 is carried out to the adjusting of different angles; Piezoelectric ceramic actuator 7 is placed in the piezoelectric ceramic actuator draw-in groove 4 on base 2 surfaces, and be connected with control module 15 by wire 14, by control module 15, regulate the DC voltage at piezoelectric ceramic actuator 7 two ends, independent or the synchronous radial displacement that drives, controls piezoelectric ceramic actuator 7 changes, realize parallel rising, the sinking of the different angles of top objective table 10 and the inclination of direction and top objective table 10, changed the distance of microslide 9 with micro objective 19, fine setting Jiao who completes microscope 18.As shown in Figure 2, coupling bolt 3 is connected with top objective table 10 by internal thread hole 21, and coupling bolt 3 heads are placed in base 2 coupling bolt grooves, and adopt preloading spring 1 to carry out pretension to it; When top objective table 10 sinks, coupling bolt 3, under the tension force effect of preloading spring 1, has shortened the reduction time of top objective table 10 and has guaranteed that steel ball 8 contacts with top objective table 10 holding points all the time, the instability while having avoided reducing; Top objective table 10 has light hole 13, and microslide fixture 11 is fixed on top objective table 10 by microslide fixture set bolt 12.

The utility model can be placed on conventional optical microscope objective table 16, as biological microscope, Stereo microscope, material inverted microscope etc.As shown in Figure 3, on conventional biological microscope, the utility model can be fixed on the utility model by the through hole 5 on base 2 surfaces and set bolt 17 surface of microscope stage 16.

The use procedure of the utility model on microscope 18 is as follows:

1, need the sample of observation to be fixed on the utility model top objective table 10, utilize microslide fixture 11 fixing;

2, rough focusing utilizes microscope 18 focusing rings own to complete;

3, change focus adjustment method after searching out sample position and profile, utilize the utility model to finely tune, by control module 15, the displacement synchronous control (stretch) of three piezoelectric ceramic actuators 7 is realized to accurate focusing;

4, for fuzzy (out-of-level the causing of causing due to sample or objective table injustice) of the subregion of having focused within the scope of rear field of microscope, utilize control module 15 adjustment member piezoelectric ceramic actuators 7, make three piezoelectric ceramic actuators 7 produce displacement difference, realize specimen surface and optical axis verticality, realize microscope 18 visual field entirety sharpness.

5, for microorganism automatically detect, the panorama of large-scale sample splicing scanning, the utility model, in conjunction with computing machine automatic focusing software, can be realized and dynamically focuses fast and focus.

Claims

1. the microscope objective table device of focusing fast, it is characterized in that: by top objective table (10), base (2), preloading spring (1), coupling bolt (3), piezoelectric ceramic actuator (7), steel ball (8), microslide fixture (11), control module (15), formed, the stand of its middle and upper part objective table (10) and base (2) composition Rapid focusing device, piezoelectric ceramic actuator (7) and steel ball (8) are realized the variation of top objective table (10) height, coupling bolt (3) and preloading spring (1) composition preload unit, top objective table (10) and base (2) carry out supported at three point by three piezoelectric ceramic actuators (7) and three steel balls (8), steel ball (8) is installed in the recessed ball groove of piezoelectric ceramic actuator, by point, contact and support top objective table (10) simultaneously, by a contact, guarantee that piezoelectric ceramic actuator (7) precisely transmits and is convenient to the anchorage force of top objective table (10) top objective table (10) is carried out to the adjusting of different angles, piezoelectric ceramic actuator (7) is placed in the piezoelectric ceramic actuator draw-in groove (4) on base (2) surface, and be connected with control module (15) by wire (14), by control module (15), regulate the DC voltage at piezoelectric ceramic actuator (7) two ends, independently or synchronously drive, the radial displacement of controlling piezoelectric ceramic actuator (7) changes, realize parallel rising or the sinking of the different angles of top objective table (10) and the inclination of direction and top objective table (10), changed the distance of microslide (9) with micro objective (19), complete fine setting Jiao of microscope (18), coupling bolt (3) is connected with top objective table (10) by internal thread hole (21), and coupling bolt (3) head is placed in base (2) coupling bolt groove, and adopts preloading spring (1) to carry out pretension to it, when top objective table (10) sinks, coupling bolt (3) is under the tension force effect of preloading spring (1), shortened the reduction time of top objective table (10) and guaranteed that steel ball (8) contacts with top objective table (10) holding point all the time, the instability while having avoided reducing, top objective table (10) has light hole (13), and microslide fixture (11) is fixed on top objective table (10) by microslide fixture set bolt (12).