Tool for eccentricity adjustment of optical lens
By designing an optical lens lens eccentricity adjustment fixture and using a POM fixture and a copper threaded cap fastening device, the step-by-step concentricity adjustment of a single lens lens is achieved, solving the problem of lens concentricity control and improving the imaging quality and assembly efficiency of the optical lens.
Patent Information
- Application Number
- CN202520652422.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-04-09
AI Technical Summary
In the manufacturing and assembly of optical lenses, it is difficult to efficiently adjust the concentricity between lenses and between lenses and the frame. This is especially true in high-end lenses with a large number of lenses, where the adjustment process is complex and time-consuming, affecting image quality.
An optical lens lens eccentricity adjustment fixture, comprising a base, a lens frame, and a POM fixture, is adopted. By aligning the central axis of the POM fixture with the lens frame and base, and using a fastening device that connects the copper thread cap to the lens frame threadedly, the individual lens elements are gradually adjusted and fixed. Finally, UV adhesive is used to fix the concentricity.
It enables efficient concentricity adjustment of multiple lens elements, ensuring the quality and consistency of optical lens assembly, improving the accuracy and efficiency of lens adjustment, and simplifying the operation process.
Smart Images
Figure CN223857476U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to optical lens technical field, concretely relates to a tool for optical lens lens eccentricity adjustment. BACKGROUND
[0002] In the manufacturing and assembly process of optical lenses, the concentricity (eccentricity) control of lenses and lenses, lenses and frames is a key technical requirement, especially in high-precision applications such as medical lenses, which have extremely high standards for image clarity. In the assembly process, optical lenses are usually composed of multiple lenses, spacers and frames. Due to the manufacturing and assembly tolerances of the lenses, the optical center and mechanical center of the individual lenses may have slight deviations. If these deviations are not strictly controlled during assembly, it may cause the optical axis of the entire lens to deviate, thereby affecting the imaging quality and causing problems such as blurred images, image distortion or distortion.
[0003] Currently, the common adjustment method is to detect the entire lens group (containing multiple lenses) after being assembled into the frame on the eccentricity instrument. The eccentricity instrument can measure the deviation of the optical center of the lens relative to the mechanical axis, and the engineer needs to correct the eccentricity by rotating, moving or adjusting the position of certain lenses. However, a common problem encountered during adjustment is that when a certain lens is adjusted to be concentric, another lens may produce new eccentricity due to adjustment action or internal stress change of the frame. This mutual influence makes the adjustment process complex and time-consuming, especially for high-end optical lenses with a large number of lenses. SUMMARY
[0004] To solve the above problems, the utility model provides a tool for adjusting the eccentricity of optical lens lenses, characterized by: including base, frame and POM tool, the inner side of the base is provided with an installation groove, the inner side of the base is provided with a through groove below the installation groove, the frame is placed in the installation groove, the frame is provided with a lens, the side of the frame is provided with a point glue hole, the lower part of the POM tool is located inside the frame and the POM tool is pressed tightly on the lens, the inner side of the frame is provided with a fastening device above, and the fastening device is used to lock the POM tool.
[0005] Preferably, the fastening device includes a copper threaded cap, the copper threaded cap is sleeved on the outer side of the POM tool, the bottom of the copper threaded cap is located between the POM tool and the frame, the outer side of the lower part of the POM tool is provided with a block, the outer side of the bottom of the copper threaded cap is provided with an external thread, the inner side of the top of the frame is provided with an internal thread, and the copper threaded cap is connected with the frame through threads.
[0006] Preferably, the POM tool is a cylindrical hollow structure, and the center axes of the POM tool, the frame and the base coincide.
[0007] Preferably, the diameter of the upper part of the copper threaded cap is larger than that of the lower part.
[0008] Preferably, the mirror frame is provided with a plurality of groups of dispensing holes, each group of dispensing holes is provided with a plurality of dispensing holes and is uniformly arranged around the side surface of the mirror frame.
[0009] The utility model discloses the advantages are:
[0010] 1. The scheme can adjust the eccentricity of the single lens in sequence, and the single lens is fixed by UV glue after adjustment, and then the next lens is adjusted until all the lenses are adjusted to concentricity, and the lenses in the mirror frame can reach the required concentricity. The repeatable operation mode is suitable for the assembly and adjustment of multiple lenses, and the quality and consistency of the whole optical lens assembly are ensured.
[0011] 2. In the scheme, the POM tool center axis is consistent with the mirror frame and the base, and the lower part is located inside the mirror frame and presses the lens downward, provides fixing and pressing force in the lens adjustment process, ensures that the lens does not affect the adjustment accuracy due to vibration or looseness, and helps to improve the quality and efficiency of lens adjustment.
[0012] 3. In the scheme, the fastening device adopts the mode that the copper threaded cap is screwed with the mirror frame, the structure is simple, the operation is convenient, the POM tool can be locked and loosened by rotating the copper threaded cap, and the lens position is convenient to adjust. DETAILED DESCRIPTION
[0013] Fig. 1 It is the overall structure diagram of the utility model.
[0014] Fig. 2 It is the exploded view of the utility model.
[0015] Fig. 3 It is the mirror frame structure diagram of the utility model.
[0016] In the drawing: 1 base, 2 mirror frame, 3 POM tool, 4 mounting groove, 5 through groove, 6 lens, 7 dispensing hole, 8 copper threaded cap, 9 stop block. DETAILED DESCRIPTION
[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model.
[0018] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Simultaneously, when an component is referred to as "fixed to" or "equipped on" another component, it can be directly on the other component or may have an intervening component present. When an component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present. When an component is referred to as "fixedly connected to" another component, it can be a common fixed connection method such as welding, bolting, or gluing. In short, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] Example 1, such as Figs. 1-3 As shown, a fixture for adjusting the eccentricity of an optical lens includes a base 1, a lens frame 2, and a POM fixture 3. The base 1 is the foundation of the entire fixture and is fixed to a centering instrument to ensure that the entire device does not shift during adjustment. A mounting groove 4 is provided on the upper inner side of the base 1 for placing the lens frame 2. A through groove 5 is provided on the inner side of the base 1 below the mounting groove 4 for easy observation.
[0021] The frame 2 is the mounting structure for the optical lenses 6. It is used to place multiple lenses 6 inside. The side of the frame 2 is provided with glue holes 7 for fixing the lenses 6 with UV glue, ensuring that the lenses 6 will not shift due to external force during final assembly.
[0022] POM fixture 3 is a cylindrical hollow structure made of POM material. POM material has good toughness and wear resistance, and will not scratch or contaminate the surface of lens 6 when pressing it, making it suitable for the assembly of high-precision optical components. The central axis of POM fixture 3 is aligned with the frame 2 and the base 1. The lower part of POM fixture 3 is located inside the frame 2, and POM fixture 3 presses down on lens 6. The main function of POM fixture 3 is to provide fixing and clamping force during the adjustment of lens 6, ensuring that lens 6 will not affect the adjustment accuracy due to vibration or loosening.
[0023] The inner side of the mirror frame 2 is provided with a fastening device for locking the POM tool 3. The fastening device comprises a copper threaded cap 8, which is sleeved on the outer side of the POM tool 3, and the bottom of the copper threaded cap 8 is located between the POM tool 3 and the mirror frame 2. The lower outer side of the POM tool 3 is provided with a stop block 9, the outer side of the bottom of the copper threaded cap 8 is provided with an external thread, and the top inner side of the mirror frame 2 is provided with an internal thread. The copper threaded cap 8 is threadedly connected with the mirror frame 2. When the copper threaded cap 8 is threadedly locked with the mirror frame 2, the copper threaded cap 8 moves downward and abuts against the stop block 9 on the outer side of the POM tool 3, and pushes the stop block 9 to drive the POM tool 3 to move downward to press the lens 6.
[0024] The diameter of the upper part of the copper threaded cap 8 is larger than that of the lower part. The larger diameter of the upper part of the copper threaded cap 8 provides a larger contact area and operation space for the rotating tool or manual rotation operation. It is not easy to slip during rotation, and the operator can more easily apply a rotating force, thereby improving operation efficiency and reducing operation errors and time waste caused by tool slipping.
[0025] The mirror frame 2 is provided with a plurality of groups of dispensing holes 7, each group of dispensing holes 7 is provided with a plurality of dispensing holes 7 and is uniformly arranged around the side of the mirror frame 2. Each group of dispensing holes 7 corresponds to the position of one lens 6. The design of the multi-point distributed dispensing holes 7 can make the lens 6 more uniform and firm, and further improve the stability of the lens 6 installation.
[0026] During assembly, first, the base 1 is fixed on the center instrument, then the first lens 6 is installed in the mirror frame 2, the POM tool 3 is used to press the lens 6, the copper threaded cap 8 is used to lock the POM tool 3, the mirror frame 2 is placed in the mounting groove 4 of the base 1, the eccentric state of the lens 6 is observed by rotating the mirror frame 2, the copper threaded cap 8 can be loosened to adjust the position of the lens 6, or the lens 6 can be pushed at the position of the dispensing hole 7 of the mirror frame 2 to make the lens 6 eccentric to the minimum state, and the copper threaded cap 8 is locked. UV glue is dispensed in the dispensing hole 7 of the mirror frame 2, and in this embodiment, each group of dispensing holes 7 is three, and the UV glue is cured on the ultraviolet curing instrument. After curing, the copper threaded cap 8 is loosened, and then the next lens 6 is installed, and the adjustment method is consistent with that of the previous lens 6. Until all the lenses 6 of the mirror frame 2 are adjusted in place.
[0027] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. An optical lens eccentricity adjustment tool, characterized by: Including base (1), mirror frame (2) and POM tooling (3), the inside of the base (1) is provided with mounting groove (4), the inside of the base (1) is provided with through groove (5) below mounting groove (4), the mirror frame (2) is placed in mounting groove (4), the mirror frame (2) is provided with lens (6), the side of the mirror frame (2) is provided with point glue hole (7), the POM tooling (3) is pressed lens (6) below mirror frame (2) and the POM tooling (3) is locked, the inside of the mirror frame (2) is provided with fastening device, the fastening device is used to lock POM tooling (3).
2. The tool for adjusting decentration of an optical lens according to claim 1, wherein: The fastening device includes copper threaded cap (8), the copper threaded cap (8) is provided with the bottom between POM tooling (3) and mirror frame (2), the bottom outside of the copper threaded cap (8) is provided with external thread, the top inside of the mirror frame (2) is provided with internal thread, the copper threaded cap (8) and mirror frame (2) are connected by screw thread.
3. The tool for adjusting decentration of an optical lens according to claim 2, wherein: The POM tooling (3) is hollow columnar structure, the central axis of the POM tooling (3), mirror frame (2) and base (1) coincides.
4. The tool for adjusting decentration of an optical lens according to claim 3, wherein: The diameter of the copper threaded cap (8) is greater than the diameter of the bottom.
5. The tool for adjusting decentration of an optical lens according to claim 4, wherein: The mirror frame (2) is provided with several groups of point glue hole (7), each group of point glue hole (7) is provided with several and is evenly arranged around the side of the mirror frame (2).