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A kind of optical lens double-sided polishing method

A double-sided polishing and optical lens technology, which is applied in the direction of optical surface grinders, grinding/polishing equipment, metal processing equipment, etc., can solve the problems of cumbersome polishing process, low polishing efficiency, complicated polishing methods, etc., and achieve the elimination of uneven removal , High-efficiency double-sided high-precision processing effect

Active Publication Date: 2022-06-07
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of complex polishing method, cumbersome polishing process and low polishing efficiency in the above method

Method used

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  • A kind of optical lens double-sided polishing method
  • A kind of optical lens double-sided polishing method
  • A kind of optical lens double-sided polishing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] like figure 1 As shown in the schematic diagram of the polishing process of the spherical lens, for the biconvex spherical lens 6, the upper and lower grinding tools 4 and 5 of the biconvex spherical lens are used for double-sided polishing. Place the biconvex spherical lens 6 directly in the middle of the upper and lower abrasives 4 and 5 of the biconvex spherical lens, and adjust the position to ensure that the upper and lower surfaces of the biconvex spherical lens 6 and the inner surfaces of the upper and lower abrasives 4 and 5 of the biconvex spherical lens Then, through the rotation of the upper and lower grinding tools 4 and 5 of the biconvex spherical lens, the surface material of the lens is continuously removed to achieve the double-sided polishing of the biconvex spherical lens 6 .

[0049] like figure 2 , 3 As shown, when the upper and lower grinding tools are cambered disc grinding tools 7 or spherical grinding head grinding tools 10, the biconvex spher...

Embodiment 2

[0059] like Figure 4 As shown, for the concave-convex spherical lens 14, the upper and lower abrasive tools 12 and 13 of the concave-convex spherical lens are used for polishing, and the polishing process is similar to that in Embodiment 1; The meniscus spherical lens 14 is polished. When using the plane disc abrasive tool 18 and the spherical abrasive tool 10, the concave-convex spherical lens 14 needs to be concentrically installed in the circular retaining ring 8, and the retaining ring 8 and the inner ring of the bearing 9 have an interference fit. The ring 8 and the concave-convex spherical lens 14 are rotatable relative to the inner ring of the bearing 9 . Adjust the position to ensure that the upper and lower surfaces of the concave-convex spherical lens 14 are in point contact with the surfaces of the plane disc grinder 18 and the spherical grinder 10, and then through the rotation of the upper and lower grinders 12 and 13 of the concave-convex spherical lens, the le...

Embodiment 3

[0068] like Figure 5 As shown, for the double concave spherical lens 17, the upper and lower grinding tools 15 and 16 of the double concave spherical lens 18 can be used for polishing, and the polishing process is similar to that of Embodiment 1; Figure 8 As shown, for the double concave spherical lens 17, the double concave aspheric lens 20 can also be polished by the combination of the upper and lower spherical grinding head grinding tools 10. When the upper and lower spherical grinding head grinding tools 10 are used, the double concave aspheric lens 20 needs to be concentrically installed in the circular retaining ring 8, and the retaining ring 8 and the inner ring of the bearing 9 have an interference fit. The concave aspheric lens 20 is rotatable relative to the inner ring of the bearing 9 . Adjust the position to ensure that the upper and lower surfaces of the double concave aspheric lens 20 are in point contact with the surfaces of the upper and lower spherical grin...

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Abstract

The invention discloses a double-sided polishing method of an optical lens, which belongs to the field of ultra-precision processing. In the double-sided polishing method, an abrasive tool is set at the upper and lower positions of the lens, and during the polishing process, the abrasive tool fits the upper and lower surfaces of the lens and swings back and forth to generate relative motion to remove surface materials, thereby realizing simultaneous polishing of the upper and lower surfaces of the lens. The movement of the grinding tools during the polishing process includes the self-rotation of the upper and lower grinding tools and the overall reciprocating swing of the upper and lower grinding tools. The circular trajectory of the lens oscillates. And during the polishing process, the polishing liquid is supplied through the center liquid supply mode of the abrasive tool or the external drop liquid mode. In order to eliminate the problem of uneven removal, the invention adopts the method of abrasive tool swing processing and workpiece flipping polishing in the polishing process, which can realize high-efficiency double-sided high-precision processing of non-planar lenses, and this method can be applied to different types of lenses double-sided polishing.

Description

technical field [0001] The invention belongs to the field of ultra-precision machining, relates to a double-sided polishing device for a curved lens, and in particular relates to an efficient machining method for spherical / aspherical lenses. Background technique [0002] In recent years, with the increasing demand for laser fusion national major scientific projects, high-resolution earth observation major scientific and technological projects and various opto-mechanical products, the ultra-precision machining of optical components is moving towards high precision, high efficiency and low cost. develop. Especially with the rapid development of the smart phone and digital electronic equipment industry, the demand for the accuracy of optical lenses is also getting higher and higher due to the improvement of their performance requirements. Nano / sub-nanometer scale. [0003] There are many polishing methods for optical components, such as chemical mechanical polishing, free abr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B13/00B24B13/01B24B57/02
CPCB24B13/00B24B13/01B24B57/02B24B37/08B24B37/042B24B13/02
Inventor 郭江王康乐张鹏飞潘博
Owner DALIAN UNIV OF TECH