Device applied to small-batch high-precision adjustment of lenses

Abstract

The utility model discloses a device applied to small-batch high-precision lens adjustment, and belongs to the technical field of lenses. The lens cone is provided with a cavity hole, a first positioning groove and a second positioning groove are distributed in the cavity hole, spokes and a central round hole are evenly distributed in the spoke disc, holes are formed in the spokes, the diameter of the small metal rods is matched with the hole diameter of the holes, and the small metal rods can be inserted into the holes. The utility model has the advantages that the assembling precision of the lens can be improved, the lens to be adjusted can be adjusted to the optimal assembling position of other lens optical or lens cone mechanical reference by matching with an eccentric instrument commonly used in optical measurement, the jig is flexible, the diameter of the jig can be changed at any time, the jig corresponds to the lenses with different diameters, the earlier-stage investment is less, and the assembling precision is high; and the efficiency is obviously improved.

Description

Technical Field

[0001] The utility model relates to a device used for adjusting lenses in small batches with high precision, belonging to the technical field of lenses. Background Art

[0002] High-definition and high-performance lenses are widely used in electronic information, aerospace, automobile manufacturing, security and other technical fields, and play a positive role in promoting the development of the manufacturing industry. In the production process of high-performance lenses, strict requirements are required for the assembly accuracy of lenses. For this reason, core-adjusting equipment has emerged for the precise assembly of lenses. The MTF core-adjusting equipment simulates the actual inspection state of the lens, adjusts the important or high-sensitivity lenses inside the lens, and fixes the lenses. For mass-produced models, the MTF core-adjusting machine can adjust the lenses efficiently and accurately, but the initial equipment investment is large, and the adjustable lenses are relatively fixed. When replacing the core-adjusting lenses, the entire set of fixtures needs to be replaced. Utility Model Content

[0003] The utility model solves the technical problems existing in the prior art, thereby providing a device for adjusting lenses in small batches with high precision.

[0004] The existing technical problems are solved by the following technical solutions: a device for adjusting lenses in small batches with high precision, wherein the lens barrel has a cavity hole, the cavity hole is provided with a first positioning groove and a second positioning groove, the spoke disk has evenly distributed spokes and a central circular hole, the spokes are provided with holes, the diameter of a small metal rod matches the aperture of the hole, and the small metal rod can be inserted into the hole.

[0005] The first positioning groove and the second positioning groove are grooves used for core adjustment and glue dispensing, and the bottom of the metal rod is respectively connected to the first positioning groove and the second positioning groove.

[0006] The utility model has the advantages of improving the assembly accuracy of the lens, and can adjust the adjusted lens to the best assembly position of the optical or barrel mechanical benchmark of other lenses in conjunction with the eccentricity instrument commonly used in optical measurement, and is relatively flexible, and the diameter of the fixture can be changed at any time to correspond to lenses of different diameters, with low initial investment, high assembly accuracy, and significantly improved efficiency.

[0007] The following table shows the accuracy measurement values ​​of direct assembly and core adjustment assembly using the designed fixture, indicating that the utility model improves the assembly accuracy compared with the prior art.

[0008] BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. As shown in the figure:

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 It is a schematic diagram of the matching structure of the utility model.

[0012] Figure 3 It is a three-dimensional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] Example 1: Figure 1 , Figure 2 and Figure 3 As shown, a device for adjusting lenses in small batches with high precision, the lens barrel 1 has a cavity hole 7, the cavity hole 7 is distributed with a first positioning groove 5 and a second positioning groove 6, the spoke disk 2 has evenly distributed spokes 8 and a central circular hole 9, the spokes 8 are arranged with holes 4, the diameter of the metal rod 3 matches the aperture of the hole 4, the metal rod 3 can be inserted into the hole 4, the first positioning groove 5 and the second positioning groove 6 are notches for core adjustment and glue dispensing, and the bottom of the metal rod 3 is respectively connected to the first positioning groove 5 and the second positioning groove 6.

[0015] There are grooves for core adjustment and glue dispensing at the lens matching position. Small holes are evenly opened on the disk spokes for assembling metal rods used for core adjustment. The metal rod 3 and the hole 4 are connected and fixed by UV glue. The central circular hole 9 is used to pass light during measurement and to support the lens when removing the fixture to prevent the lens from moving.

[0016] The alignment of the lens in the standard lens and the alignment of the high-sensitivity lens when the production quantity is small. Figure 1), leaving the first positioning groove 5 and the second positioning groove 6 for core adjustment and glue dispensing, using the jig and the most commonly used eccentricity meter for optical measurement, the lens can be quickly and accurately adjusted to the required position, and glued to fix it, completing the high-precision assembly of the lens and achieving optimal imaging performance.

[0017] Example 2: Figure 1 , Figure 2 and Figure 3 As shown, a device for adjusting lenses in small batches with high precision is used to solve the problem that it is difficult to ensure assembly accuracy for important lenses. When processing the lens barrel that needs to be adjusted, grooves for adjusting the core and dispensing glue are processed at the lens matching position. In later use, small holes are evenly opened on the spokes to assemble the small metal rods used for adjusting the core. The small metal rods are fixed with UV glue. The larger circular hole in the center is used to pass light during measurement and to hold the lens against the lens when removing the fixture to prevent the lens from moving.

[0018] The core checking jig of the lens barrel 1 is fixed on the eccentric instrument. If the lens to be adjusted needs to be centered with a mechanical reference, the reference position where the core checking jig contacts the lens barrel is adjusted coaxially and parallelly; if the lens to be adjusted needs to be centered with another lens, the plane where the core checking jig contacts the lens barrel is adjusted to be parallel, and the coaxiality is adjusted with the surface with a smaller curvature of the other lens.

[0019] Place the lens barrel 1 and the lens to be adjusted on the core checking jig, with the jig designed this time placed on the top, ready for core adjustment. The curvature of the lens to be adjusted is the smaller surface, and the turntable on the eccentricity meter rotates to draw a circle. Through fine-tuning, adjust the point to the center of the circle.

[0020] Raise the measuring head, use a POM stick to hold the lens, remove the fixture designed this time, restore the position of the measuring head, and confirm again whether the lens moves. If there is no change, apply UV glue in the groove of the lens barrel and cure it. Finally, measure and record the final assembly status.

[0021] When there are fewer lenses to adjust, this solution can be used. When there are more lenses to adjust, a small XYZ workbench can be used to perform core adjustment operations, which will improve efficiency.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for adjusting lenses in small batches with high precision, characterized in that: The lens barrel has a cavity hole, the cavity hole is distributed with a first positioning groove and a second positioning groove, the spoke disk has evenly distributed spokes and a central circular hole, the spokes are arranged with holes, the diameter of the metal rod matches the aperture of the hole, and the metal rod can be inserted into the hole.

2. The device for adjusting lenses in small batches with high precision according to claim 1, characterized in that: The first positioning groove and the second positioning groove are grooves used for core adjustment and glue dispensing, and the bottom of the metal rod is respectively connected to the first positioning groove and the second positioning groove.

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