CN211061774U

CN211061774U - Micro-optical path laser coupling repeated positioning device

Info

Publication number: CN211061774U
Application number: CN201922399550.6U
Authority: CN
Inventors: 蔡宏太; 陈海霞
Original assignee: Zolix Instruments Co ltd
Current assignee: Zolix Instruments Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-21
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a repeated positioner of microscopic light path laser coupling, last mirror holder (10) and base (20) including setting up from top to bottom are equipped with three ball (30) between last mirror holder (10) and base (20), are equipped with three upper groove in the upper surface of base (20), three upper groove is triangular distribution, and the bottom surface of first upper groove (21) is the conical surface, and the bottom surface of second upper groove (22) is the V-arrangement face, and the bottom surface of third upper groove (23) is the plane, is equipped with three low groove in the lower surface of last mirror holder (10), and the upper portion of ball (30) is located in the low groove, the lower part of ball (30) is located in the upper groove, the centre of sphere of three ball (30) is located a datum plane. The laser coupling repeated positioning device for the microscopic light path not only can realize high-repeatability laser coupling of the microscopic light path, but also can facilitate subsequent expansion and increase of the laser light path.

Description

Micro-optical path laser coupling repeated positioning device

Technical Field

The utility model relates to an optical equipment field, specific be a microscopic light path laser coupling repetitive positioning device.

Background

In a micro laser test device, such as a micro-raman test system, a micro-fluorescence test system, etc., a plurality of lasers are required to be configured, and different optical filters are required to couple a laser light path to a micro light path, as shown in fig. 1, which includes a detector 1, a laser 2, a micro-illumination 3, a sample 4, a microscope 5, a camera 6, a laser coupling filter 7, a spectrometer coupling light path 8, and a spectrometer 9.

When the laser is switched, the corresponding optical filter needs to be switched, if the repeated positioning accuracy of the installation of the optical filter is not good, the laser path in the microscopic light path is seriously affected, and if the laser path is serious, the laser cannot pass through the microscopic light path, so that the system cannot work.

In the current laser optical path coupling to the microscope optical path, a high-precision turntable switching mode is generally adopted. The coupling optical filter corresponding to the laser is installed into a component, the optical filter component is installed on a high-precision turntable, and the whole turntable is installed in a microscopic light path. When the laser light path needs to be used, the optical filter component on the turntable is switched in an electric control mode or a manual mode, namely, the optical filter component corresponding to the laser is switched to the microscopic light path in a rotating mode of the turntable, so that the function of coupling the laser light path to the microscopic light path is realized.

Adopt the mode of carousel switching light filter to switch laser light path, its shortcoming lies in: if the design of the turntable is finalized, the number of the optical filter assemblies mounted on the turntable is determined, so that the number of the laser light paths capable of being coupled is determined, and the subsequent increase of the laser light paths is not realized if the expansion is needed. In addition, the technical scheme of the turntable needs to adopt a high-precision turntable, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

In order to realize the micro-light path laser coupling of high repeatability, the utility model provides a micro-light path laser coupling repeated positioning device, this micro-light path laser coupling repeated positioning device not only can realize the micro-light path laser coupling of high repeatability to can make things convenient for follow-up expansion to increase laser light path.

The utility model provides a technical scheme that its technical problem adopted is: a microscope laser coupling repeated positioning device comprises an upper mirror frame and a base which are arranged up and down, wherein three balls are arranged between the upper mirror frame and the base, three upper grooves are formed in the upper surface of the base and distributed in a triangular mode, the three upper grooves are a first upper groove, a second upper groove and a third upper groove in sequence, the bottom surface of the first upper groove is a conical surface, the bottom surface of the second upper groove is a V-shaped surface, the bottom surface of the third upper groove is a plane, three lower grooves are formed in the lower surface of the upper mirror frame, the positions of the three balls, the positions of the three upper grooves and the positions of the three lower grooves correspond to one another one by one, the upper portions of the balls are located in the lower grooves, the lower portions of the balls are located in the upper grooves, and the centers of the three balls are located in a reference plane.

The axis of the conical surface is perpendicular to the reference plane.

The V-shaped surface comprises a left inclined surface and a right inclined surface which are arranged in a bilateral symmetry mode, the left inclined surface can rotate 180 degrees around a central axis and then coincide with the right inclined surface, and the central axis is perpendicular to the reference plane.

The bottom surface of the third upper groove is parallel to the reference plane.

The first upper groove, the second upper groove and the third upper groove are distributed in an isosceles triangle shape, and a connecting line of the second upper groove and the third upper groove corresponds to the bottom side of the isosceles triangle.

A first replacing block is arranged in the bottom of the first upper groove, and the bottom surface of the first upper groove is the upper surface of the first replacing block; a second replacement block is arranged in the bottom of the second upper groove, and the bottom surface of the second upper groove is the upper surface of the second replacement block; a third replacing block is arranged in the bottom of the third upper groove, and the bottom surface of the third upper groove is the upper surface of the third replacing block.

The section of the three upper grooves is circular, the inner diameter of each upper groove is larger than the diameter of each ball, the first replacing block is in matched splicing with the first upper groove, the second replacing block is in matched splicing with the second upper groove, and the third replacing block is in matched splicing with the third upper groove.

Be equipped with a plurality of magnet grooves of going up in the upper surface of base, it has lower magnet to go up the magnet inslot and be fixed with down magnet, is equipped with a plurality of magnet grooves down in the lower surface of going up the mirror holder, magnet inslot is fixed with magnet down, and lower magnet is connected with last magnet one-to-one.

Four upper magnet grooves are formed in the upper surface of the base, four lower magnet grooves are formed in the lower surface of the upper mirror bracket, the four upper magnet grooves are distributed in a rectangular mode, and the center of the rectangular shape coincides with the center of the triangular shape.

The upper lens bracket is of an inverted T-shaped structure, the base is of a plate-shaped structure, and the lower surface of the upper lens bracket and the upper surface of the base are parallel to the reference plane.

The utility model has the advantages that:

1. the laser coupling repeated positioning accuracy problem in the microscopic light path has been solved effectively, can extend the increase laser light path very conveniently simultaneously, both constitute a subassembly with the corresponding optical filter of laser, then with the design of subassembly base the utility model discloses technical scheme just can install and realize laser coupling in the microscopic light path.

2. The design and processing cost of high-precision laser coupling is effectively reduced.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic diagram of a prior art spectrometer and its optical path.

Fig. 2 is a front view of a micro-optics laser-coupled repositioning device.

FIG. 3 is a top view of a micro-optics laser-coupled repositioning device.

Fig. 4 is a cross-sectional view of the first upper groove, the second upper groove, and the third upper groove portion.

Fig. 5 is a schematic view of a replacement block in the first upper groove.

Fig. 6 is a schematic view of a replacement block in the second upper groove.

Fig. 7 is a schematic view of a replacement block in the third upper groove.

10. An upper spectacle frame; 20. a base; 30. a ball bearing; 40. an optical filter;

11. an upper magnet; 12. an upper vertical plate; 13. a lower transverse plate;

21. a first upper groove; 22. a second upper groove; 23. a third upper groove; 24. a first replacement block; 25. a second replacement block; 26. a third replacement block; 27. a lower magnet.

221. A left bevel; 222. a right bevel; 223. a central axis.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A microscopic light path laser coupling repeated positioning device comprises an upper lens frame 10 and a base 20 which are arranged up and down, wherein three balls 30 are arranged between the upper lens frame 10 and the base 20, three upper grooves are arranged in the upper surface of the base 20, the three upper grooves are distributed in a triangular shape, namely the three upper grooves are not on the same straight line, the three upper grooves are a first upper groove 21, a second upper groove 22 and a third upper groove 23 in sequence, the bottom surface of the first upper groove 21 is a conical surface, the bottom surface of the second upper groove 22 is a V-shaped surface, the bottom surface of the third upper groove 23 is a plane (which can be called as a bottom plane), three grooves are arranged in the lower surface of the upper lens frame 10, the positions of the three balls 30 and the positions of the three upper grooves correspond to the positions of the three lower grooves one by one, the upper parts of the balls 30 are positioned in the lower grooves in a matching manner, and the balls 30 are abutted against the lower grooves, the lower portion of the ball 30 is located in the upper groove, the ball 30 abuts against the upper groove, and the centers of the three balls 30 are located in one reference plane, as shown in fig. 2 to 4.

In the present embodiment, the axis of the bottom surface (i.e., the tapered surface) of the first upper groove 21 is perpendicular to the reference plane, the tapered surface is a conical surface, the bottom end of the conical surface faces upward, and the top end of the conical surface faces downward. The bottom surface (the V-shaped surface) of the second upper groove 22 includes a left inclined surface 221 and a right inclined surface 222 which are arranged in bilateral symmetry, the left inclined surface 221 and the right inclined surface 222 are mirror images of each other, the left inclined surface 221 and the right inclined surface 222 are both arranged in an inclined manner relative to the reference plane, the left inclined surface 221 can rotate 180 degrees around a central axis 223 and then coincide with the right inclined surface 222, and the central axis 223 is perpendicular to the reference plane. The bottom surface of the third upper groove 23 is parallel to the reference plane.

In the present embodiment, the first upper groove 21, the second upper groove 22 and the third upper groove 23 are distributed in an isosceles triangle, a connection line between the center of the second upper groove 22 and the center of the third upper groove 23 corresponds to the bottom side of the isosceles triangle, a connection line between the center of the first upper groove 21 and the center of the second upper groove 22 corresponds to one waist of the isosceles triangle, and a connection line between the center of the first upper groove 21 and the center of the third upper groove 23 corresponds to the other waist of the isosceles triangle.

In this embodiment, a first replacement block 24 is disposed in the bottom of the first upper groove 21, and the bottom surface of the first upper groove 21 is the upper surface of the first replacement block 24; a second replacing block 25 is arranged in the bottom of the second upper groove 22, and the bottom surface of the second upper groove 22 is the upper surface of the second replacing block 25; a third replacing block 26 is arranged in the bottom of the third upper groove 23, and the bottom surface of the third upper groove 23 is the upper surface of the third replacing block 26. The first replacement block 24, the second replacement block 25 and the third replacement block 26 are all cylindrical in structure, and the diameter of the first replacement block 24, the diameter of the second replacement block 25 and the diameter of the third replacement block 26 are the same, as shown in fig. 5, 6 and 7.

In this embodiment, the cross-section of each of the three upper grooves is circular, the inner diameters of the three upper grooves are the same, the diameters of the three balls 30 are the same, and the inner diameter of each upper groove is larger than the diameter of each ball 30. The first replacing block 24 is detachably connected with the first upper groove 21, the second replacing block 25 is detachably connected with the second upper groove 22, and the third replacing block 26 is detachably connected with the third upper groove 23. The first replacement block 24 is matched and inserted with the first upper groove 21, the second replacement block 25 is matched and inserted with the second upper groove 22, and the third replacement block 26 is matched and inserted with the third upper groove 23, as shown in fig. 4.

In this embodiment, a plurality of upper magnet slots are formed in the upper surface of the base 20, each upper magnet slot is internally fixed with a lower magnet 27, a plurality of lower magnet slots are formed in the lower surface of the upper lens frame 10, each lower magnet slot is internally fixed with an upper magnet 11, the positions of the upper magnet slots correspond to the positions of the lower magnet slots one to one, the lower magnets 27 are connected with the upper magnets 11 in a one-to-one correspondence manner by virtue of magnetic force, and the lower magnets 27 and the upper magnets 11 are both of a circular structure.

Specifically, four upper magnet grooves are formed in the upper surface of the base 20, four lower magnet grooves are formed in the lower surface of the upper lens frame 10, the four upper magnet grooves are distributed in a rectangular shape, and namely, a connecting line between the centers of the two adjacent upper magnet grooves is rectangular. The center of the rectangle is superposed with the center of the triangle, and the side length of the rectangle is approximately equal to the length of the bottom side of the isosceles triangle. The diameter of the upper magnet groove is the same as that of the lower magnet groove, and the diameter of the upper magnet groove is slightly larger than that of the first upper groove 21.

The upper lens frame 10 and the base 20 can be separated, the upper lens frame 10 is of an inverted T-shaped structure, the upper lens frame 10 comprises an upper vertical plate 12 and a lower horizontal plate 13 which are connected up and down, the base 20 is of a plate-shaped structure, the lower horizontal plate 13 is parallel to the base 20, the three lower grooves are all located on the lower surface of the lower horizontal plate 13, the distance between the lower horizontal plate 13 and the base 20 can be 0mm to 3mm, the centers of the three balls 30 can be located between the lower surface of the lower horizontal plate 13 and the upper surface of the base 20, and the lower surface of the upper lens frame 10, the upper surface of the base 20 and the lower surface of the base 20 are all parallel to the reference.

The device comprises a base 20 and a plurality of upper lens frames 10, each upper lens frame 10 is identical, a lower transverse plate 13 of each upper lens frame 10 is identical, different optical filters 40 are mounted in an upper vertical plate 12 of each upper lens frame 10, and the positions of the optical centers of the optical filters on the upper vertical plate 12 are identical, so that the plurality of different upper lens frames 10 can be matched with one base 20 for use, the different upper lens frames 10 can be ensured to be identical to the base 20 in connection positions, and the positions of the optical centers of the optical filters 40 of each upper lens frame 10 on the base 20 are identical (repeated).

The working process of the micro-optical path laser coupling repeated positioning device is described below.

Step 1, setting the base 20 at a set position of a microscopic light path.

And 2, respectively placing 3 balls 30 in the three upper grooves of the base 20.

And 3, correspondingly connecting the upper lens frame 10 containing the required optical filter 40 with the base 20, namely, correspondingly connecting the three lower grooves of the upper lens frame 10 with the three upper grooves of the base 20 one by one, enabling the balls 30 to be abutted against the bottom surfaces of the lower grooves and the bottom surfaces of the upper grooves, and correspondingly connecting the lower magnets 27 with the upper magnets 11 one by one.

And step 4, the upper lens frame 10 and the base 20 are connected stably to form the micro light path laser coupling repeated positioning device, and the micro light path laser coupling repeated positioning device is positioned on the laser coupling optical filter 7 shown in the figure 1.

Step 5, the upper frame 10 can be detached as required, that is, the upper frame 10 is separated from the base 20, and the upper frame 10 having the required optical filter is replaced, that is, the above step 3 is repeated.

In the repeated positioning, the conical surface in the base 20 and the ball 30 form annular line contact, and the axial positioning of the upper lens holder 10 taking the axis of the conical surface as the axis is ensured; the V-shaped surface of the base 20 and the ball 30 form two-point contact, so that radial positioning is ensured, and the repeated positioning function of the micro-optical-path laser coupling repeated positioning device is ensured. The plane of the base 20 (i.e., the bottom plane rather than the reference plane) makes a single point contact with the ball 30.

For convenience of understanding and description, the present invention is expressed in terms of absolute positional relationship, in which the directional word "up" indicates the upper direction of fig. 4, "down" indicates the lower direction of fig. 4, "left" indicates the left direction of fig. 4, and "right" indicates the right direction of fig. 4. The present invention is described by using the observation angle of the reader, but the above-mentioned orientation words can not be understood or interpreted as the limitation of the protection scope of the present invention.

The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and the technical scheme all can the independent assortment use.

Claims

1. A microscopic light path laser coupling repeated positioning device is characterized by comprising an upper mirror bracket (10) and a base (20) which are arranged up and down, wherein three balls (30) are arranged between the upper mirror bracket (10) and the base (20), three upper grooves are arranged in the upper surface of the base (20), the three upper grooves are distributed in a triangular shape, the three upper grooves are respectively a first upper groove (21), a second upper groove (22) and a third upper groove (23) in sequence, the bottom surface of the first upper groove (21) is a conical surface, the bottom surface of the second upper groove (22) is a V-shaped surface, the bottom surface of the third upper groove (23) is a plane, three lower grooves are arranged in the lower surface of the upper mirror bracket (10), the positions of the three balls (30) and the positions of the three upper grooves correspond to the positions of the three lower grooves one by one, the upper part of the ball (30) is positioned in the lower groove, the lower part of the ball (30) is positioned in the upper groove, and the centers of the three balls (30) are positioned in a reference plane.

2. The micro optical path laser coupled repositioning device of claim 1, wherein the axis of the tapered surface is perpendicular to the reference plane.

3. The coupled laser positioning device for microscope beam path in claim 1, wherein the V-shaped surface has a left inclined surface (221) and a right inclined surface (222) symmetrically arranged from side to side, the left inclined surface (221) can be rotated 180 degrees around a central axis (223) to coincide with the right inclined surface (222), and the central axis (223) is perpendicular to the reference plane.

4. The coupled repetition positioning device of microscope beam path laser according to claim 1, characterized in that the bottom surface of the third upper groove (23) is parallel to the reference plane.

5. The coupled laser positioning device for microscope beams according to claim 1, wherein the first upper groove (21), the second upper groove (22) and the third upper groove (23) are distributed in an isosceles triangle, and the connecting line of the second upper groove (22) and the third upper groove (23) corresponds to the base of the isosceles triangle.

6. The micro optical path laser coupled repositioning device of claim 1,

a first replacing block (24) is arranged in the bottom of the first upper groove (21), and the bottom surface of the first upper groove (21) is the upper surface of the first replacing block (24);

a second replacement block (25) is arranged in the bottom of the second upper groove (22), and the bottom surface of the second upper groove (22) is the upper surface of the second replacement block (25);

a third replacing block (26) is arranged in the bottom of the third upper groove (23), and the bottom surface of the third upper groove (23) is the upper surface of the third replacing block (26).

7. The coupled laser positioning device of microscope light path according to claim 6, wherein the cross section of the three upper grooves is circular, the inner diameter of the upper groove is larger than the diameter of the ball (30), the first replacement block (24) is inserted in the first upper groove (21) in a matching way, the second replacement block (25) is inserted in the second upper groove (22) in a matching way, and the third replacement block (26) is inserted in the third upper groove (23) in a matching way.

8. The coupled laser microscope repositioning device according to claim 1, wherein a plurality of upper magnet slots are formed in the upper surface of the base (20), lower magnets (27) are fixed in the upper magnet slots, a plurality of lower magnet slots are formed in the lower surface of the upper frame (10), upper magnets (11) are fixed in the lower magnet slots, and the lower magnets (27) are connected with the upper magnets (11) in a one-to-one correspondence manner.

9. The device for coupled repetitive positioning of laser in microscope optical path according to claim 8, characterized in that four upper magnet slots are provided in the upper surface of the base (20), four lower magnet slots are provided in the lower surface of the upper frame (10), the four upper magnet slots are distributed in a rectangle, and the center of the rectangle coincides with the center of the triangle.

10. The coupled repetition positioning device of microscope light path laser according to claim 1, characterized in that the upper frame (10) is in an inverted T-shaped structure, the base (20) is in a plate-like structure, and the lower surface of the upper frame (10) and the upper surface of the base (20) are both parallel to the reference plane.