A structure for quickly adjusting the coaxiality of a lens

Abstract

The invention discloses a structure for quickly adjusting the coaxiality of a lens, comprising a group frame, a group frame cavity being provided in the group frame, a lens being placed in the group frame cavity, a spring sheet being provided on the group frame for pressing the lens against the group frame, at least three spring sheet screw holes and at least three convex points pressing against the lens being provided on the spring sheet, the spring sheet screw holes and the convex points being distributed along the circumferential direction of the spring sheet, a screw connected to the group frame for positioning the spring sheet being passed through the spring sheet screw holes, the spring sheet pressing the lens against the group frame so that the lens and the supporting surface of the group frame cavity are flushed, a gap is reserved between the side wall of the lens and the side surface of the group frame cavity, on the one hand, the lens is pressed against the group frame by the elastic force of the spring sheet, on the other hand, the lens is not locked and cannot move, when adjusting the coaxiality of the lens and the group frame, the lens can be pushed to move along the radial direction of the lens so that the central axis of the lens and the central axis of the group frame are overlapped as much as possible, thereby realizing quick adjustment of the coaxiality of the lens and meeting the increasingly improved optical specification requirements and lens design performance.

Description

[Technical field]

[0001] The invention relates to a structure for quickly adjusting the coaxiality of a lens. [Background Technology]

[0002] With the rapid development of high-tech, security optical zoom lenses have been widely used. In order to meet the needs of the market, more and more lenses need to use large chips with high resolution, and zoom lenses need to be used in different fields and environments, which leads to increasing difficulty in lens design, increasing technical requirements for each group, and increasing requirements for product molding and process manufacturing.

[0003] Among them, the coaxiality deviation between the lens and the group frame is one of the most important factors affecting the performance of the optical lens. Coaxiality refers to the degree of consistency between the central axis of the lens and the central axis of the group frame. If the coaxiality is high, the optical performance of the lens is better. If the coaxiality is low, the optical performance is poor.

[0004] In the existing manufacturing technology, the way to adjust the coaxiality of the lens is to clamp the lens through a robot, and the robot presses the lens from the front to make the lens lean against the group frame. At the same time, the robot applies a radial force to the lens to try to make the central axis of the lens coaxial with the central axis of the group frame. After adjusting the coaxiality of the lens and the group frame, the lens is fixed to the group frame by gluing or other methods. However, the existing manufacturing technology has the following problems and disadvantages: the structure of the device for adjusting the coaxiality of the lens is complex, the adjustment process is complex, the production cost is high, and there is a limit on the magnification of adjusting the coaxiality of the lens. If the light angle is large, the fixture cannot be avoided, and there is a risk of dark corners, which affects product quality.

[0005] The present invention is produced based on the above problems. [Summary of the invention]

[0006] The purpose of the present invention is to address the deficiencies of the prior art and to propose a structure for quickly adjusting the coaxiality of a lens. The lens is pressed against a group frame by the convex points on a spring sheet. On the one hand, the lens is pressed tightly against the group frame by the elastic force of the spring sheet. On the other hand, the lens is not locked and cannot move. Therefore, when adjusting the coaxiality of the lens and the group frame, the lens can be pushed and moved along the radial direction of the lens so that the central axis of the lens and the central axis of the group frame coincide as much as possible, thereby realizing quick adjustment of the coaxiality of the lens and the group frame.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A structure for quickly adjusting the coaxiality of a lens, characterized in that it includes a group frame 1, a group frame cavity 11 is provided in the group frame 1, a lens 2 is placed in the group frame cavity 11, the group frame 1 is also provided with a spring piece 3 that can press the lens 2 against the group frame 1, the spring piece 3 is provided with at least three spring piece screw holes 31 and at least three convex points 32 that press against the lens 2, the spring piece screw holes 31 and the convex points 32 are distributed along the circumferential direction of the spring piece 3, and a screw 4 connected to the group frame 1 and positioning the spring piece 3 is passed through the spring piece screw hole 31.

[0009] A structure for quickly adjusting the coaxiality of a lens, characterized in that the spring piece 3 comprises a circular ring 33 , the outer side of the circular ring 33 is provided with three protrusions 34 which are integrally formed therewith and evenly distributed, and the spring piece screw hole 31 is located on the protrusion 34 .

[0010] A structure for quickly adjusting the coaxiality of a lens, characterized in that three evenly distributed convex points 32 are arranged on the annular surface of the annular ring 33 facing the lens 2.

[0011] A structure for quickly adjusting the coaxiality of a lens, characterized in that the convex point 32 is a structure formed by stamping on a circular ring 33, and the convex point 32 and the circular ring 33 are integrally formed.

[0012] A structure for quickly adjusting the coaxiality of a lens, characterized in that the group frame 1 is provided with a group frame screw hole 12 that cooperates with a screw 4, and the screw 4 passes through a spring screw hole 31 and is screwed into the group frame screw hole 12 so that a protrusion 32 rests against the lens 2.

[0013] The beneficial effects of the present invention are:

[0014] 1. The lens is tightly attached to the group frame by the elastic force of the shrapnel, so that the lens is not locked and cannot move. The manipulator device no longer needs to press the lens from the front. It only needs to move the lens radially to make the central axis of the lens coincide with the central axis of the group frame, so as to quickly adjust the coaxiality of the lens, and the operation is flexible and simple;

[0015] 2. The present invention has a simple structure, is easy to operate, and does not take long to complete. It can also greatly improve the production yield of the machine model and increase production capacity, thus avoiding the high cost and complex operation caused by the previous manipulator device and image recognition operation.

[0016] 3. The mechanical hand device for adjusting the coaxiality of the lens of the present invention has a simple structure, which greatly simplifies the adjustment process and greatly reduces the production cost and manufacturing process;

[0017] 4. The present invention avoids the disadvantages of tolerance tilt accumulated by multiple lenses, being far away from the optical design value, and being difficult to achieve the optical design goal;

[0018] 5. The movement direction of the manipulator device for adjusting the coaxiality of the lens of the present invention is only the radial direction of the lens. The manipulator device no longer needs to press the lens forward along the optical axis direction, so it will not be unable to avoid the fixture due to the large angle of light, and the application range of adjusting the coaxiality of the lens is wider;

[0019] 6. The present invention has no requirement on the magnification of adjusting the coaxiality of the lens, which indirectly reduces the difficulty of optical design, simplifies the structure and reduces the cost;

[0020] 7. The present invention can be used to achieve the increasingly improved optical specifications and optical design performance, making up for the shortcomings of existing production and product technologies;

[0021] 8. The lens coaxiality adjustment of the present invention can help improve the difficulty of optical design, concentrate sensitive items in one design, and ultimately improve the overall performance of product design. [Drawings]

[0022] Figure 1 is a plan view of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 for Figure 2 Exploded diagram of

[0025] Figure 4 is the plan view of the shrapnel;

[0026] Figure 5 It is a cross-sectional view of the convex point along the diameter direction of the spring ring. [Specific implementation method]

[0027] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0028] like Figure 1-5As shown, a structure for quickly adjusting the coaxiality of a lens comprises a group frame 1, wherein a group frame cavity 11 is provided in the group frame 1, a lens 2 is placed in the group frame cavity 11, the group frame 1 is also provided with a spring piece 3 capable of pressing the lens 2 against the group frame 1, the spring piece 3 is provided with at least three spring piece screw holes 31 and at least three convex points 32 pressing against the lens 2, the spring piece screw holes 31 and the convex points 32 are distributed along the circumferential direction of the spring piece 3, and a screw 4 connected to the group frame 1 and positioning the spring piece 3 is penetrated in the spring piece screw hole 31. The spring piece 3 pushes the lens 2 against the group frame 1 so that the lens 2 is flush with the supporting surface of the group frame cavity 11, and a gap is reserved between the side wall of the lens 2 and the side of the group frame cavity 11. On the one hand, the lens 2 is pressed against the group frame 1 by the elastic force of the spring piece 3, and on the other hand, the lens 2 is not locked and cannot move. When adjusting the coaxiality between the lens 2 and the group frame 1, the lens 2 can be pushed along the radial direction of the lens 2 to make the central axis of the lens 2 coincide with the central axis of the group frame 1 as much as possible, so as to achieve the coaxiality of the lens 2 to be quickly adjusted, easy to operate, and achieve the increasingly improved optical specifications and optical design performance, making up for the shortcomings of existing production and product technology. The manipulator device for adjusting the coaxiality of the lens 2 has a simple structure, greatly simplifies the adjustment process, and greatly reduces the production cost and manufacturing process. Since the movement direction of adjusting the coaxiality of the lens 2 is only the radial direction of the lens 2, the manipulator device no longer needs to press the lens 2 from the front, so it can also avoid the fixture when the light angle is large, and the scope of application of adjusting the coaxiality of the lens 2 is wider.

[0029] like Figure 4 As shown, the spring piece 3 includes a ring 33, and three protrusions 34 are formed integrally with the ring 33 and evenly distributed on the outer side. The spring piece screw hole 31 is located on the protrusion 34. The screw 4 passes through the spring piece screw hole 31 and is connected to the group frame 1, so that the spring piece 3 is connected to the group frame 1.

[0030] like Figure 4-5 As shown, three evenly distributed convex points 32 are provided on the annular surface of the ring 33 facing the lens 2. The three convex points 32 press against the lens 3, so that the lens 2 is kept flat on the supporting surface of the group frame cavity 11 when the robot moves the lens 2, so that the lens 2 does not tilt, the operation is simple, and it does not take much time. At the same time, it can greatly improve the production yield of the machine model and increase the production capacity.

[0031] like Figure 4-5 As shown, the protrusion 32 is a structure formed by punching on the ring 33, and the protrusion 32 and the ring 33 are integrally formed.

[0032] like Figure 2-3As shown, the group frame 1 is provided with a group frame screw hole 12 that cooperates with the screw 4. The screw 4 passes through the spring screw hole 31 and is screwed into the group frame screw hole 12 so that the convex point 32 rests on the lens 2. On the one hand, the lens 2 can be tightly attached to the group frame 1 by the elastic force of the spring 3. On the other hand, the lens 2 will not be locked and unable to move. When adjusting the coaxiality between the lens 2 and the group frame 1, the lens 2 can be pushed along the radial direction of the lens 2 to make the central axis of the lens 2 coincide with the central axis of the group frame 1 as much as possible, so as to achieve rapid adjustment of the coaxiality of the lens 2. At the same time, for the coaxiality adjustment of multiple lenses, the coaxiality of each lens and the group frame 1 can be adjusted in turn, avoiding the shortcomings of the accumulated tolerance tilt of multiple lenses, being far away from the optical design value, and being difficult to achieve the optical design goal. The new structure has no requirements for the magnification of adjusting the coaxiality of the lens 2, which indirectly reduces the difficulty of optical design and simplifies the structure.

Claims

1. A structure for quickly adjusting the coaxiality of a lens, characterized in that: The invention comprises a group frame (1), wherein a group frame cavity (11) is provided in the group frame (1), a lens (2) is placed in the group frame cavity (11), and the group frame (1) is also provided with a spring sheet (3) capable of pressing the lens (2) against the group frame (1), the spring sheet (3) is provided with at least three spring sheet screw holes (31) and at least three convex points (32) pressing against the lens (2), the spring sheet screw holes (31) and the convex points (32) are distributed along the circumferential direction of the spring sheet (3), a screw (4) connected to the group frame (1) and positioning the spring sheet (3) is passed through the spring sheet screw hole (31), and a gap is reserved between the side wall of the lens (2) and the side surface of the group frame cavity (11); The spring piece (3) comprises a circular ring (33), the outer side of the circular ring (33) is provided with three protrusions (34) which are integrally formed with the circular ring and evenly distributed, and the spring piece screw hole (31) is located on the protrusion (34); the circular surface of the circular ring (33) facing the lens (2) is provided with three evenly distributed protrusions (32); The convex point (32) is a structure formed by punching on the circular ring (33), and the convex point (32) and the circular ring (33) are integrally formed; The group frame (1) is provided with a group frame screw hole (12) matched with the screw (4); the screw (4) passes through the spring sheet screw hole (31) and is screwed into the group frame screw hole (12) so that the protrusion (32) is pressed against the lens (2).

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