CN221101121U - Optical lens cone with adjustable tube length - Google Patents

Abstract

The utility model provides an optical lens cone with adjustable cone length, which belongs to the technical field of laser beam expansion and comprises a lens cone, wherein one end of the lens cone is provided with a pressing ring for limiting lenses, the pressing ring is provided with a gasket, the other end of the lens cone is internally provided with a threaded connection with an adjusting sleeve, the inner side of one end of the lens cone, which is close to the adjusting sleeve, is provided with a limiting convex edge, a spring is arranged between the adjusting sleeve and the limiting convex edge, two ends of the spring are respectively provided with a spring seat and a spring sleeve for spacing the spring and the lens cone, the lens cone is provided with a guide groove for limiting sliding of the spring sleeve, and a locking ring is further arranged on the adjusting sleeve. Compared with the existing adjusting mode of locking by only a locking ring, the technical scheme provided by the utility model can eliminate the meshing clearance of threads in the adjusting process, reduce the matching error and offset the vibration influence in the debugging process.

Description

Optical lens cone with adjustable tube length

Technical Field

The utility model belongs to the technical field of laser beam expansion, and particularly relates to an optical lens barrel with an adjustable barrel length.

Background

In the course of the optical barrel length adjustment, high precision positioning is often required, and the adjustment requires multiple iterations. This is because, in the debugging process, there are some clearances in the thread engagement, and if these clearances are not eliminated, positional deviation is liable to occur. To eliminate these clearances and lock the threads, locking rings are often used during the commissioning process to apply force to the adjustment sleeve to eliminate the clearances between the threads. However, the adjustment is an iterative process, frequent locking operations tend to damage the threads and also tend to affect the accuracy, since friction is generated when the locking ring contacts the adjustment sleeve, which may cause the adjustment sleeve to rotate slightly, thereby reducing the accuracy.

The prior art has the following disadvantages:

1. The locking ring is contacted with the adjusting sleeve to generate friction force, so that the accuracy of the rotation loss of the adjusting sleeve is caused;

2. the operation is complicated, and the operation is required to be carried out according to a specific assembly sequence;

3. Repeated locking operations may damage the threads, affecting the life of the overall structure.

In view of these problems, a new solution is needed to eliminate the thread gap during the length adjustment of the optical barrel, ensure high-precision positioning, reduce the damage to threads and structures caused by locking operation, improve the debugging efficiency and maintain the system accuracy.

Disclosure of utility model

The utility model provides an optical lens barrel with adjustable barrel length, which aims at the defects of the prior art.

The utility model realizes the aim through the following technical scheme:

The utility model provides an adjustable long optical lens cone of section of thick bamboo, includes the lens cone, lens cone one end is equipped with the clamping ring that is used for spacing lens, the clamping ring is equipped with the packing ring, the lens cone other end has the regulation sleeve through interior threaded connection, the lens cone is close to the one end inboard of regulation sleeve is equipped with spacing protruding edge, the regulation sleeve with be equipped with the spring between the spacing protruding edge.

Further, a spring seat is arranged at the contact end of the spring and the limiting convex edge.

Further, the contact ends of the spring seat and the limiting convex edge are subjected to chamfering treatment.

Further, a spring sleeve is arranged at the contact end of the spring and the adjusting sleeve.

Further, the lens cone is provided with a guide groove for limiting and sliding of the spring sleeve.

Furthermore, the adjusting sleeve is sleeved into the lens barrel end for chamfering.

Further, the adjusting sleeve is provided with a locking ring.

Compared with the prior art, the utility model has the following beneficial effects:

1. The spring is arranged in the lens barrel, so that the restoring force is kept at all times after the adjusting sleeve is rotated to a designated position, the gap is eliminated, the external force is balanced, and the axial positioning precision is ensured;

2. Coaxiality is ensured in the adjusting process, the machining precision of the thread is not depended, and the thread only plays a simple adjusting role;

3. the structural durability is high, and the use precision is not affected even if the thread is damaged;

4. the whole structure is oil-free, has no scraps, and can be precisely matched to prevent dust;

5. The occupied space is small, and the adjustment is convenient.

Compared with the existing adjusting mode of locking ring locking, the technical scheme provided by the utility model can eliminate the meshing clearance of threads in the adjusting process, reduce the matching error and offset the vibration influence in the debugging process.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a spring side structure of a lens barrel according to an embodiment of the present utility model;

In the figure: 1-pressing ring, 2-washer, 3-lens cone, 4-spring, 5-spring seat, 6-spring sleeve, 7-adjusting sleeve, 8-locking ring, 9-limit flange.

Detailed Description

Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

In the optical debugging process, in order to ensure that light with different wavelengths has the same divergence angle, the length of an optical lens barrel is required to be adjusted, and based on the working condition, the utility model provides an optical lens barrel with adjustable barrel length, which comprises a lens barrel 3, wherein one end of the lens barrel 3 is provided with a pressing ring 1 for limiting a lens, the pressing ring 1 is provided with a gasket 2, the other end of the lens barrel 3 is connected with an adjusting sleeve 7 through an internal thread, the inner side of one end of the lens barrel 3, which is close to the adjusting sleeve 7, is provided with a limiting convex edge 9, and a spring 4 is arranged between the adjusting sleeve 7 and the limiting convex edge 9.

The adjusting sleeve 7 is a main adjusting part of the optical lens barrel with adjustable barrel length and is used for connecting the laser optical fiber with the lens barrel 3, the adjusting sleeve 7 is arranged on the lens barrel 3 through threads, and the spring 4 applies reaction force to the lens barrel 3 and the adjusting sleeve 7 in the middle so as to achieve the effect of eliminating gaps; compared with the existing adjusting mode of locking by using a locking ring, the design can eliminate the meshing clearance of threads in the adjusting process, reduce the matching error and offset the vibration influence in the debugging process.

In order to facilitate the installation of the adjusting sleeve 7 into the lens barrel 3, chamfering is performed at the sleeved end of the adjusting sleeve 7.

In order to prevent the spring 4 from generating friction with the lens barrel 3 in the sliding process and further generating metal scraps to pollute a light path, a spring seat 5 is arranged at the contact end of the limiting convex edge 9 of the spring 4 and the lens barrel 3, a spring sleeve 6 is arranged at the contact end of the spring 4 and the adjusting sleeve 7, the spring 4 and the lens barrel 3 are separated through the spring seat 5 and the spring sleeve 6, the oxidation layer of the lens barrel 3 is prevented from being damaged, and the spring seat 5 and the spring sleeve 6 are made of nonmetallic materials with smooth surfaces and high density. Meanwhile, in order to be sleeved into the lens barrel 3 conveniently, the contact end of the spring seat 5 and the limiting convex edge 9 is subjected to chamfering treatment.

In order to prevent the spring 4, the spring seat 5 and the spring sleeve 6 from rotating, a guide groove is arranged on the inner side of the lens barrel 3, and the spring sleeve 6 is limited to slide through the guide groove, so that the spring 4 is limited to move axially along the guide groove, and rotation is avoided.

In order to stabilize the debugged optical lens barrel, a locking ring 8 is arranged on the adjusting sleeve 7 after the debugging is finished, so that the effects of locking the lens barrel 3 and the adjusting sleeve 7 are achieved.

The following describes the technical scheme with reference to fig. 1-2 and the implementation process of the embodiment of the present utility model.

The specific implementation steps are as follows:

Firstly, designing a lens cone 3 and an adjusting sleeve 7 according to the lens size, the light source spot size, the adjusting range and other conditions, wherein the lens cone 3 is connected with the adjusting sleeve 7 through threads, the coaxiality of the lens cone 3 and the adjusting sleeve 7 is ensured by the matching precision of the positions shown in fig. 1, and a guide groove of a spring sleeve 6 is reserved.

Then, according to the weight, the adjusting range and the adjusting vibration conditions of the adjusting sleeve 7, the outer diameter, the wire diameter, the number of turns and the total length of the spring 4 are determined, and according to the adjusting range, the spring 4 with proper length is selected to enable the stress of the adjusting sleeve 7 to be uniform due to the characteristic that the larger the compression amount of the spring is, the larger the elasticity is.

The spring seat 5 and the spring sleeve 6 are made of nonmetallic materials with smooth surfaces and high density, and the spring sleeve 6 is matched with the guide groove of the lens barrel 3 so that the spring 4 can only move along the axial direction. If the spring 4 is in direct contact with the adjusting sleeve 7, the lens barrel 3 and the spring 4 generate relative motion and friction force is attached, so that metal scraps are generated and pollute the light path.

Finally, the assembly is carried out as shown in fig. 1:

the first step: the lens is fixed in a lens barrel 3 by a pressing ring 1 and a gasket 2;

And a second step of: the spring seat 5 is arranged in the lens cone 3;

And a third step of: the spring 4 is put on the spring seat 5 of the lens barrel 3;

Fourth step: the spring sleeve 6 is arranged in the guide groove of the lens cone 3;

Fifth step: the adjusting sleeve 7 is screwed in, and the lock ring 8 is screwed in for locking after the adjusting sleeve is adjusted to the designated wavelength position.

The technical scheme of the utility model utilizes the restoring force of the spring 4 to eliminate the clearance of thread engagement, and the axial position is fixed in the debugging process, so that the divergence angle of light is fixed; the lens barrel 3 (fixed end) and the adjusting sleeve 7 (movable end) have good coaxiality in the adjusting process, so that the light is ensured to be directed accurately; the lens cone 3 and the adjusting sleeve 7 are precisely matched, and the spring sleeve 6 can play a role in dust prevention of the optical cavity, so that the light path is not polluted.

It should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

Claims (7)

1. The utility model provides an adjustable long optical lens cone of section of thick bamboo, includes lens cone (3), lens cone (3) one end is equipped with clamping ring (1) that are used for spacing lens, clamping ring (1) are equipped with packing ring (2), its characterized in that, the lens cone (3) other end has adjusting sleeve (7) through interior threaded connection, lens cone (3) are close to the one end inboard of adjusting sleeve (7) is equipped with spacing protruding edge (9), adjusting sleeve (7) with be equipped with spring (4) between spacing protruding edge (9).

2. The optical lens barrel with adjustable barrel length according to claim 1, wherein a spring seat (5) is arranged at the contact end of the spring (4) and the limiting flange (9).

3. The optical barrel with adjustable barrel length according to claim 2, wherein the contact end of the spring seat (5) and the limit flange (9) is chamfered.

4. An optical barrel with adjustable barrel length according to any one of claims 1-3, characterized in that the spring (4) is provided with a spring sleeve (6) at the end in contact with the adjustment sleeve (7).

5. An optical barrel with adjustable barrel length according to claim 4, characterized in that the barrel (3) is provided with a guide groove for limited sliding of the spring sleeve (6).

6. An optical barrel with adjustable barrel length according to claim 1, wherein the adjusting sleeve (7) is sleeved into the barrel end for chamfering.

7. An optical barrel with adjustable barrel length according to claim 1, characterized in that the adjustment sleeve (7) is fitted with a lock ring (8).