Laser lens angle fine adjustment structure

Abstract

The utility model relates to the technical field of laser lenses, in particular to a laser lens angle fine adjustment structure. The laser lens angle fine adjustment structure comprises a lens group and a prism. The lens group is mounted in the main lens barrel, and the prism is mounted in the prism mounting seat; the main lens barrel is connected with the prism mounting seat through a limiting mechanism; the angle between the lens group and the prism is adjusted through an adjusting mechanism. According to the technical scheme of the utility model, the main lens barrel is connected with the prism mounting seat through the limiting mechanism, the adjustment angle is limited by controlling the gap between the main lens barrel and the prism mounting seat, the pitching adjustment between the prism mounting seat and the main lens barrel is realized through the adjusting mechanism, the tolerance requirement of a workpiece can be reduced, and the production efficiency is improved. The processing and manufacturing cost and the debugging difficulty are reduced, and the yield of the laser lens can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser lens technical field especially is involved in a laser lens angle fine adjustment structure. BACKGROUND

[0002] With the continuous progress of science and technology, optical detection technology has been rapidly developed, because its high precision, high sensitivity, high stability and can realize remote detection characteristics in mechanical manufacturing industry, medical aerospace, rail transit and various fields have become an indispensable part. As a part of optical detection, through its high-precision focusing and scanning, the precision and resolution of optical detection are significantly improved, and its performance in microscopic detection is particularly outstanding, which can detect cracks and gaps that cannot be observed by the naked eye, significantly improve the quality of products, and can also find and check hidden dangers in time. However, the current laser lens has high precision requirements for its internal light path, which leads to high processing difficulty and high cost. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a laser lens angle fine adjustment structure, which can reduce the tolerance requirements of the workpiece, reduce the processing cost and debugging difficulty, and also improve the yield of the laser lens.

[0004] The utility model provides a laser lens angle fine adjustment structure, which comprises: a lens group and a prism.

[0005] The lens group is installed in the main lens barrel, and the prism is installed in the prism mounting seat.

[0006] The main lens barrel and the prism mounting seat are connected through a limiting mechanism.

[0007] The angle between the lens group and the prism is adjusted through an adjusting mechanism.

[0008] Preferably, the limiting mechanism comprises a threaded steel ball, and the threaded steel ball is installed on the prism mounting seat.

[0009] Further preferably, a limiting clamping groove and a screw mounting hole are formed in the prism mounting seat.

[0010] The limiting clamping groove and the screw mounting hole are respectively formed on both sides of the prism mounting seat, a screw is installed in the screw mounting hole, and the screw fixes the threaded steel ball in the limiting clamping groove.

[0011] Preferably, the limiting mechanism further comprises a silica gel pad, and the silica gel pad is installed on the bottom surface of the prism mounting seat connected with the lens group.

[0012] Further preferably, the main lens barrel bottom is provided with threaded steel ball clamping grooves, and two threaded steel ball clamping grooves are symmetrically distributed on both sides of the main lens barrel bottom.

[0013] Further preferably, the threaded steel ball is placed in the threaded steel ball clamping groove.

[0014] Preferably, the adjusting mechanism comprises an adjusting screw, and the adjusting screw is installed on the prism mounting seat.

[0015] Further preferably, the main lens barrel bottom is provided with adjusting screw threaded holes, and two adjusting screw threaded holes are symmetrically distributed on both sides of the main lens barrel bottom.

[0016] Further preferably, the prism mounting seat is also provided with an adjusting screw mounting hole, and the adjusting screw enters the adjusting screw threaded hole from the adjusting screw mounting hole.

[0017] Further preferably, the silica gel pad is provided with a limiting hole corresponding to the position of the limiting mechanism and the adjusting mechanism.

[0018] Beneficial effects:

[0019] The technical scheme of the utility model connects the main lens barrel and the prism mounting seat through the limiting mechanism, limits the adjusting angle by controlling the gap between the main lens barrel and the prism mounting seat, realizes the pitch adjusting between the prism mounting seat and the main lens barrel through the adjusting mechanism, can reduce the tolerance requirement of the workpiece, reduces the processing manufacturing cost and the debugging difficulty, and can also improve the yield of the laser lens. DRAWINGS

[0020] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0021] Figure 1 It is the structure schematic view of the limiting mechanism in the utility model;

[0022] Figure 2 It is the installation schematic view of the adjusting screw and the threaded steel ball in the utility model;

[0023] Figure 3 It is the schematic view of the limiting clamping groove and the adjusting screw mounting hole in the utility model;

[0024] Figure 4 It is the schematic view of the threaded steel ball after installation in the utility model (the face where the limiting clamping groove is located);

[0025] Figure 5 Figure 3 is a schematic view of the threaded steel ball after installation in the utility model (the face where the screw installation hole is located);

[0026] Figure 6 Figure 4 is a schematic view of the silica gel pad and the limiting hole thereof in the utility model;

[0027] Figure 7 Figure 5 is a schematic view of the threaded steel ball clamping groove and the adjusting screw threaded hole in the utility model;

[0028] Figure 8 Figure 6 is a schematic view of the overall structure after assembly in the utility model.

[0029] Mark explanation:

[0030] 1: lens group; 2: main lens barrel; 201: threaded steel ball clamping groove; 202: adjusting screw threaded hole; 3: prism; 4: prism mounting seat; 401: limiting clamping groove; 402: screw installation hole; 403: adjusting screw installation hole; 5: threaded steel ball; 6: screw; 7: silica gel pad; 8: adjusting screw. DETAILED DESCRIPTION

[0031] The technical solutions of the utility model will be described below in conjunction with embodiments. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] In the description of the utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] As shown in Figures 1 to 8 The utility model provides a laser lens angle fine adjustment structure, it includes lens group 1 and prism 3, lens group 1 is installed in main lens barrel 2, prism 3 is installed in prism mounting seat 4, and main lens barrel 2 is connected with prism mounting seat 4 through limiting mechanism, and the angle between lens group 1 and prism 3 is adjusted through adjusting mechanism.

[0035] The utility model discloses a technical scheme, which connects the main lens barrel 2 with the prism mounting seat 4 through the limiting mechanism, limits the adjustment angle by controlling the gap between the main lens barrel 2 and the prism mounting seat 4, realizes the pitch adjustment between the prism mounting seat 4 and the main lens barrel 2 through the adjusting mechanism, can reduce the tolerance requirement of the workpiece, reduces the processing manufacturing cost and the debugging difficulty, and can also improve the yield of the laser lens.

[0036] The limiting mechanism includes a threaded steel ball 5, which is installed on the prism mounting seat 4. The prism mounting seat 4 is provided with a limiting clamping groove 401 and a screw mounting hole 402, which are respectively provided on both sides of the prism mounting seat 4. A screw 6 is installed in the screw mounting hole 402, and the threaded steel ball 5 is fixed in the limiting clamping groove 401 by the screw 6. Specifically, as shown in Figure 1 The lens group 1 and the prism 3 are fixed in the main lens barrel 2 and the prism mounting seat 4 respectively, and the threaded steel ball 5 is fixed between the prism mounting seat 4 by the screw 6. Since the thickness from the threaded hole of the threaded steel ball 5 to the bottom surface of the threaded steel ball 5 is random, in order to control the adjustment range, a smaller limiting clamping groove 401 is provided in the prism mounting seat 4, which limits the threaded steel ball 5 by making the edge of the limiting clamping groove 401 contact with the threaded steel ball 5, avoiding the influence of the thickness of the threaded steel ball 5 on the adjustment range, and increasing the interchangeability of the structure.

[0037] The bottom of the main lens barrel 2 is provided with a threaded steel ball clamping groove 201, and two threaded steel ball clamping grooves 201 are symmetrically distributed on both sides of the bottom of the main lens barrel 2. The threaded steel ball 5 is placed in the threaded steel ball clamping groove 201. Specifically, in this embodiment, after the threaded steel ball 5 is installed, the main lens barrel 2 and the threaded steel ball 5 are placed in the threaded steel ball clamping groove 201 of the main lens barrel 2, and the threaded steel ball 5 is used to press against the main lens barrel 2 and the prism mount 4 respectively, so that an adjustable space can be left between the main lens barrel 2 and the prism mount 4. The size of the adjustment range can be controlled by the groove depth of the threaded steel ball 5 corresponding to the main lens barrel 2, the diameter of the steel ball, and the diameter of the limiting groove of the prism mount 4.

[0038] The adjustment mechanism includes an adjustment screw 8 installed on the prism mount 4. The bottom of the main lens barrel 2 is provided with an adjustment screw threaded hole 201, and two adjustment screw threaded holes 201 are symmetrically distributed on both sides of the bottom of the main lens barrel 2. The prism mount 4 is also provided with an adjustment screw mounting hole 403, and the adjustment screw 8 enters the adjustment screw threaded hole 201 from the adjustment screw mounting hole 403. Specifically, in this embodiment, as shown in Figure 2 the threaded steel ball 5 is fixed, the adjustment screw threaded hole 201 is formed by tapping the adjustment screw mounting hole corresponding to the prism mount 4 part at the corresponding position of the main lens barrel 2, and the lens can be adjusted by loosening the corresponding side adjustment screw 8 after installation. This adjustment method can adjust the prism 3 within a specified range, and the prism 3 can be locked after adjustment, so the structure is stable and reliable. However, due to the gap between the main lens barrel 2 and the prism mount 4, light leakage may occur, and during the adjustment process, the gap between the screw mounting hole 402 and the screw 6 may cause the prism 3 to shake during adjustment, increasing the difficulty of debugging.

[0039] To solve the problem of light leakage and debugging, the limiting mechanism also includes a silica gel pad 7 installed on the bottom surface of the prism mount 4 connected to the lens group 1. The silica gel pad 7 is provided with a limiting hole corresponding to the position of the limiting mechanism and the adjustment mechanism. Specifically, in this embodiment, as shown in Figure 3 the silica gel pad 7 is placed between the main lens barrel 2 and the prism mount 4, and the silica gel pad 7 is limited by opening holes on the silica gel pad 7 corresponding to the positions of the adjustment screw 8 and the threaded steel ball 5. The thickness of the silica gel pad 7 can be preliminarily confirmed according to the formula Δh = (F / A) x (1-ν^2) / (E x h), where Δh represents the compression deformation, F represents the applied force, A represents the contact area, ν represents the Poisson's ratio, h represents the thickness of the silica gel sample, and E is the elastic modulus of the silica gel pad 7. On this basis, the thickness of the silica gel pad 7 is adjusted according to the actual situation.

[0040] In the debugging process, the silica gel pad 7 has potential energy to restore its original state after being deformed due to the locking of the main lens barrel 2 and the silica gel pad 7, so that an outward pushing force is applied to the prism mounting seat 4. In the process of adjusting the pitch, the silica gel pad 7 can always fill the gap between the prism mounting seat 4 and the main lens barrel 2, solving the light leakage problem.

[0041] In the process of adjusting the pitch, whether the adjusting screw 8 is locked or loosened, the silica gel pad 7 will push the prism mounting seat 4 outward to the limit position. At the same time, during the locking process, the prism mounting seat 4 will cause the silica gel pad 7 to be deformed, resulting in the damping of the screw 6. This can better adapt to the small pitch angle adjustment between the prism mounting seat 4 and the main lens barrel 2, solving the light leakage problem and the inconvenience of debugging.

[0042] As shown in Figure 3 , the prism 3 mounting part is shown. The threaded steel ball 5 is placed in the limiting slot 401 on the left and right sides, and the screw 6 is installed through the screw mounting hole 402 on the other side to lock the threaded steel ball 5. The state after locking is shown in Figure 4 , Figure 5 . After the steel ball assembly is completed, the silica gel pad 7 is clamped into the corresponding hole on the prism mounting seat 4, as shown in Figure 6 . As shown in Figure 7 , after the prism mounting seat 4 is assembled, the prism mounting seat 4 is placed into the corresponding hole of the main lens barrel 2, and the adjusting screw 8 is tightened. The state after tightening is shown in Figure 8 . In the debugging process, the pitch angle between the prism mounting seat 4 and the main lens barrel 2 can be changed by loosening one side of the adjusting screw 8 and tightening the other side of the adjusting screw 8, and the tightness can be achieved, so as to solve the light path problem.

[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A laser lens angle fine-tuning structure, characterized in that, The utility model relates to a lens group and prism, the lens group is installed in the main lens barrel, and the prism is installed in the prism mounting seat, the main lens barrel and the prism mounting seat are connected through the limiting mechanism, and the angle between the lens group and the prism is adjusted through the adjusting mechanism. The limiting mechanism comprises a threaded steel ball, and the threaded steel ball is installed on the prism mounting seat. The prism mounting seat is provided with a limiting clamping groove and a screw mounting hole. The limiting clamping groove and the screw mounting hole are respectively arranged on the two sides of the prism mounting seat, a screw is arranged in the screw mounting hole, and the screw is used for fixing the threaded steel ball in the limiting clamping groove. The limiting mechanism further comprises a silica gel pad, and the silica gel pad is arranged on the bottom surface of the prism mounting seat and connected with the lens group.

2. The laser lens angle fine-tuning structure according to claim 1, characterized in that, The main lens barrel is provided with threaded steel ball clamping grooves at the bottom, and the two threaded steel ball clamping grooves are symmetrically arranged on the two sides of the bottom of the main lens barrel.

3. The laser lens angle fine-tuning structure according to claim 2, characterized in that, The threaded steel ball is arranged in the threaded steel ball clamping groove. The adjusting mechanism comprises an adjusting screw, and the adjusting screw is arranged on the prism mounting seat.

4. The laser lens angle fine-tuning structure according to claim 1, characterized in that, The main lens barrel is provided with adjusting screw threaded holes at the bottom, and the two adjusting screw threaded holes are symmetrically arranged on the two sides of the bottom of the main lens barrel.

5. The laser lens angle fine-tuning structure according to claim 2, characterized in that, The prism mounting seat is further provided with an adjusting screw mounting hole, and the adjusting screw enters the adjusting screw threaded hole through the adjusting screw mounting hole.

6. The laser lens angle fine-tuning structure according to claim 5, characterized in that, The silica gel pad is provided with limiting holes corresponding to the positions of the limiting mechanism and the adjusting mechanism.

7. The laser lens angle fine-tuning structure according to claim 1, characterized in that, ​ 8. The laser lens angle fine-tuning structure according to claim 7, characterized in that, ​ 9. The laser lens angle fine-tuning structure according to claim 8, characterized in that, ​ 10. The laser lens angle fine-tuning structure according to claim 4, characterized in that, ​

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