Multi-lens positioning device and confocal microendoscope thereof

Abstract

The utility model provides a multi-lens positioning device which comprises a bottom plate and positioning seats arranged on the bottom plate, the positioning seats comprise a first lens positioning seat, a second lens positioning seat and a third lens positioning seat, and the multi-lens positioning device further comprises positioning columns arranged on the bottom plate. And the positioning columns are arranged on the side surfaces of the first lens positioning seat, the second lens positioning seat and the third lens positioning seat. The utility model further discloses a confocal microendoscope with the multi-lens positioning device. According to the multi-lens positioning device, the positioning column is arranged on one side of the position fixing part of the lens positioning seat, so that on one hand, installation is convenient, on the other hand, the installation position is more accurate, system errors caused by deviation of installation holes in the bottom plate can be partially eliminated, and the positioning accuracy is improved. After the multi-lens positioning device is used for the precise confocal microendoscope, system errors can be partially eliminated. The fixing structure is adopted, the structure is simple, stability is good, and the achieved effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of optical component installation, in particular to a multi-lens positioning device and a confocal microendoscopy device thereof. Background Art

[0002] In image detection instruments, lenses are often used to transmit light paths. In these instruments, the lenses need to be fixed to the base plate, and the lens holder and the base plate are usually fixedly connected by a snap-on method. Although the snap-on method is convenient to install, after a period of use, the snap-on part is prone to dislocation and loosening, resulting in deviations, which require recalibration. Moreover, even today when modern technology is relatively developed, for precision optical instruments, the superposition of various processing errors and tolerances cannot theoretically eliminate the system deviation caused by the general installation structure, but can only be minimized. Confocal microendoscopy has more light transmission components, such as a beam expander that expands the point light source, a relay group lens group for intermediate transmission, etc. Its light path is long, which is one of the starting sources of deviation. If the light path is returned after multiple deviations, the final deviation will be further amplified, and a slight difference will lead to a great error. Its detection results are obviously not accurate, and it is difficult to meet the micron-level accuracy requirements of confocal microendoscopy. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or reduce the influence of the prior art problems on the detection results. To this end, the utility model proposes a multi-lens positioning device, including a base plate 5, a positioning seat arranged on the base plate, the positioning seat including a first lens positioning seat 1, a second lens positioning seat 2 and a third lens positioning seat 3, and also includes a positioning column 4 arranged on the base plate, the positioning column is arranged on the side of the first lens positioning seat 1, the second lens positioning seat 2 and the third lens positioning seat 3, and the first lens positioning seat 1, the second lens positioning seat 2 and the third lens positioning seat 3 have different shapes.

[0004] Furthermore, the first lens positioning seat 1, the second lens positioning seat 2 and the third lens positioning seat 3 all include a lens fixing part 6 and a position fixing part 7, the lens fixing part 6 of the first lens positioning seat 1 is a rectangular block, the position fixing part 7 of the first lens positioning seat is arranged on one of the long sides of the rectangular block of the lens fixing part of the first lens positioning seat, and the positioning column 4 is relatively arranged on the other long side of the rectangular block of the lens fixing part of the first lens positioning seat.

[0005] Furthermore, the lens fixing part 6 of the second lens positioning seat 2 is a rectangular block, the position fixing part 7 of the second lens positioning seat is arranged on the short side of the rectangular block of the lens fixing part of the second lens positioning seat, and the positioning columns 4 are respectively arranged on two adjacent sides of the position fixing part of the second lens positioning seat.

[0006] Furthermore, the lens fixing portion 6 of the third lens positioning seat 3 is a rectangular block with rounded corners on the top, and the position fixing portion 7 of the third lens positioning seat is arranged on the short side of the rectangular block of the lens fixing portion of the second lens positioning seat.

[0007] Furthermore, the position fixing portion 7 and the bottom plate 5 have parallel matching planes, and the positioning posts 4 are perpendicular to the matching planes.

[0008] Furthermore, the positioning column 4 is cylindrical or prismatic.

[0009] Furthermore, a positioning hole perpendicular to the matching plane is provided on the bottom plate 5 , and the positioning column 4 is tightly fitted in the positioning hole.

[0010] Furthermore, the bottom plate is also provided with a long strip position adjustment groove 9 whose groove depth direction is perpendicular to the matching plane, and the first positioning column and the second positioning column are respectively arranged in the positioning hole in a transitional manner.

[0011] Furthermore, it also includes a driving mechanism 8 for driving the positioning seat, which is arranged on the opposite side of the positioning column 4. The driving mechanism includes a bracket 81 and a screw rod 82 arranged on the bracket.

[0012] In addition, the utility model also proposes a precision confocal microscope endoscope, including a laser generator, a beam expander lens group, a dichroic mirror, a galvanometer, a relay lens group, a coupled objective lens, a probe, and a photoelectric detector, and also includes a multi-lens positioning device as described in any one of claims 1-9, wherein the beam expander lens, dichroic mirror, and relay lens group are all fixedly arranged on the base plate through their respective positioning seats, and the probe is telescopically connected to the coupled objective lens through an optical fiber.

[0013] The multi-lens positioning device of the utility model adopts a positioning column arranged on one side of the position fixing part of the lens positioning seat, which is convenient for installation on the one hand, and makes the installation position more accurate on the other hand, and can partially eliminate the system error caused by the deviation of the installation hole on the bottom plate. The multi-lens positioning device of the utility model can partially eliminate the system error after being used in a precision confocal microscope. The utility model adopts a fixed structure, has a simple structure, good stability, and achieves good results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a multi-lens positioning device provided by the utility model;

[0015] Figure 2 It is a structural schematic diagram of another multi-lens positioning device provided by the utility model;

[0016] Figure 3This is a structural schematic diagram of another multi-lens positioning device provided by the utility model.

[0017] Among them, 1. first lens positioning seat; 2. second lens positioning seat; 3. third lens positioning seat; 4. positioning column; 5. bottom plate; 6. lens fixing part; 7. position fixing part; 8. driving mechanism; 81. bracket; 82. screw rod; 9. position adjustment groove. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Embodiment 1

[0022] A multi-lens positioning device includes a base plate 5 and a positioning seat arranged on the base plate, wherein the positioning seat includes a first lens positioning seat 1, a second lens positioning seat 2 and a third lens positioning seat 3, wherein the first lens positioning seat 1, the second lens positioning seat 2 and the third lens positioning seat 3 have different shapes, and the first lens positioning seat 1, the second lens positioning seat 2 and the third lens positioning seat 3 all include a lens fixing portion 6 and a position fixing portion 7, and when the positioning seat is used in a confocal microscope, it can be used to fix and install a relay lens group and a beam expander lens group respectively. A positioning hole is arranged on the base plate 5, and also includes a positioning column 4 arranged in the positioning hole of the base plate, and the positioning column is arranged on the side of the first lens positioning seat 1, the second lens positioning seat 2 and the third lens positioning seat 3. A through hole is arranged on the position fixing portion, and the position fixing portion is fastened to the base plate 5 by passing a bolt through the through hole.

[0023] The lens fixing part 6 of the first lens positioning seat 1 is a rectangular block, the position fixing part 7 of the first lens positioning seat is arranged on one of the long sides of the rectangular block of the lens fixing part of the first lens positioning seat, and the positioning column 4 is relatively arranged on the other long side of the rectangular block of the lens fixing part of the first lens positioning seat. The lens fixing part 6 of the second lens positioning seat 2 is a rectangular block, the position fixing part 7 of the second lens positioning seat is arranged on the short side of the rectangular block of the lens fixing part of the second lens positioning seat, and the positioning column 4 is respectively arranged on the adjacent two sides of the position fixing part of the second lens positioning seat. The lens fixing part 6 of the third lens positioning seat 3 is a rectangular block with rounded corners on the top, and the position fixing part 7 of the third lens positioning seat is arranged on the short side of the rectangular block of the lens fixing part of the second lens positioning seat.

[0024] In the above structure, the position fixing portion 7 and the bottom plate 5 have parallel matching planes, the positioning posts 4 are perpendicular to the matching planes, and the positioning posts 4 are cylindrical or prismatic. The positioning holes are perpendicular to the matching planes on the bottom plate 5, and the positioning posts 4 are tightly fitted in the positioning holes.

[0025] Embodiment 2

[0026] In order to make the base plate more adaptable, it has an adjustment function so that the position of the positioning seat can be adjusted, such as Figure 2 As shown, on the basis of the first embodiment, the bottom plate is further provided with a long strip position adjustment groove 9 whose groove depth direction is perpendicular to the matching plane, and the first positioning column and the second positioning column are respectively transitionally matched and arranged in the positioning hole.

[0027] Embodiment 3

[0028] In order to make the above embodiment more accurate, Figure 3 As shown, it also includes a driving mechanism 8 for driving the positioning seat, which is arranged on the opposite side of the positioning column 4. The driving mechanism includes a bracket 81 and a screw 82 arranged on the bracket. During the installation process, a torque wrench is used to rotate the screw 82 to achieve a fixed torque, so that the positioning seat is further close to the positioning column. Of course, the through hole on the position positioning part can be set as a waist-shaped hole so that the positioning seat has a relatively large adjustment range. Or when the through hole is circular, the positioning column and the positioning seat itself are relatively tightly fitted. The positioning seat is pushed against the positioning column with a fixed constant force by utilizing the small tolerance and deviation of the through hole, so that the function of the positioning column can be better exerted.

[0029] Embodiment 4

[0030] The utility model also proposes a precision confocal microscope endoscope, including a laser generator, a beam expander lens group, a dichroic mirror, a galvanometer, a relay lens group, a coupled objective lens, a probe, and a photoelectric detector, and also includes a multi-lens positioning device of any of the above embodiments, wherein the beam expander lens, the dichroic mirror, and the relay lens group are all fixedly arranged on the base plate through their respective positioning seats, and the probe is telescopically connected to the coupled objective lens through an optical fiber.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-lens positioning device, characterized in that: The invention comprises a base plate (5), a positioning seat arranged on the base plate, the positioning seat comprising a first lens positioning seat (1), a second lens positioning seat (2) and a third lens positioning seat (3), and also comprises a positioning column (4) arranged on the base plate, the positioning column being arranged on the side of the first lens positioning seat (1), the second lens positioning seat (2) and the third lens positioning seat (3), the first lens positioning seat (1), the second lens positioning seat (2) and the third lens positioning seat (3) having different shapes.

2. The multi-lens positioning device according to claim 1, characterized in that: The first lens positioning seat (1), the second lens positioning seat (2) and the third lens positioning seat (3) all comprise a lens fixing portion (6) and a position fixing portion (7); the lens fixing portion (6) of the first lens positioning seat (1) is a rectangular block; the position fixing portion (7) of the first lens positioning seat is arranged on one of the long sides of the rectangular block of the lens fixing portion of the first lens positioning seat; and the positioning column (4) is relatively arranged on the other long side of the rectangular block of the lens fixing portion of the first lens positioning seat.

3. The multi-lens positioning device according to claim 2, characterized in that: The lens fixing portion (6) of the second lens positioning seat (2) is a rectangular block, the position fixing portion (7) of the second lens positioning seat is arranged on the short side of the rectangular block of the lens fixing portion of the second lens positioning seat, and the positioning columns (4) are respectively arranged on two adjacent sides of the position fixing portion of the second lens positioning seat.

4. The multi-lens positioning device according to claim 2, characterized in that: The lens fixing portion (6) of the third lens positioning seat (3) is a rectangular block with rounded corners on the top, and the position fixing portion (7) of the third lens positioning seat is arranged on the short side of the rectangular block of the lens fixing portion of the second lens positioning seat.

5. The multi-lens positioning device according to claim 2, characterized in that: The position fixing portion (7) and the bottom plate (5) have parallel matching planes, and the positioning columns (4) are perpendicular to the matching planes.

6. The multi-lens positioning device according to claim 1, characterized in that: The positioning column (4) is cylindrical or prismatic.

7. The multi-lens positioning device according to claim 5, characterized in that: The bottom plate (5) is provided with a positioning hole perpendicular to the matching plane, and the positioning column (4) is tightly fitted in the positioning hole.

8. The multi-lens positioning device according to claim 7, characterized in that: The bottom plate is also provided with a long strip position adjustment groove (9) whose groove depth direction is perpendicular to the matching plane, and the first positioning column and the second positioning column are respectively arranged in the positioning hole in a transitional manner.

9. The multi-lens positioning device according to claim 1, characterized in that: It also includes a driving mechanism (8) arranged on a side opposite to the positioning column (4) for driving the positioning seat, the driving mechanism comprising a bracket (81) and a screw rod (82) arranged on the bracket.

10. A confocal endoscope, characterized in that: It includes a laser generator, a beam expander, a dichroic mirror, a galvanometer, a relay lens group, a coupled objective lens, a probe, and a photoelectric detector, and also includes the multi-lens positioning device described in any one of claims 1 to 9, wherein the beam expander, dichroic mirror, and relay lens group are all fixedly arranged on the base plate through respective positioning seats, and the probe is telescopically connected to the coupled objective lens through an optical fiber.

Images