CN114633030A

CN114633030A - Lens processing method

Info

Publication number: CN114633030A
Application number: CN202210175869.4A
Authority: CN
Inventors: 陈锋
Original assignee: Jiangmen Jinhonghuaye Electronic Technology Co ltd
Current assignee: Jiangmen Jinhonghuaye Electronic Technology Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-06-17
Anticipated expiration: 2042-02-24
Also published as: CN114633030B

Abstract

The invention discloses a lens processing method, wherein the lens processing method comprises the steps of firstly, cutting the outer contour of a lens on a raw material; step two, cutting a concave part on the lens by using laser; step three, etching the concave part; and step four, performing post-processing on the lens. By adopting the processing method, the energy consumed in the processing process of the concave part of the lens can be reduced, and the precision of the lens is improved.

Description

Lens processing method

Technical Field

The invention relates to the field of optical equipment processing, in particular to a lens processing method.

Background

The traditional lens is generally provided with a concave part which can be matched with the lens or has the functions of adjusting light rays and the like, the concave part of the lens is generally processed by numerical control equipment, but a large amount of energy is usually consumed in the process of processing the concave part of the lens by the numerical control equipment, so that resource waste is caused; in addition, the existing numerical control equipment has room for improvement in machining precision.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a lens processing method which can reduce the energy consumed in the processing process of the lens concave part and improve the lens processing precision.

According to the embodiment of the invention, the lens processing method comprises the following steps: firstly, cutting an outer contour of the lens on a raw material; step two, cutting a concave part on the lens by using laser; step three, etching the sunken part; and step four, performing post-processing on the lens.

The lens processing method provided by the embodiment of the invention has at least the following beneficial effects: and cutting the concave part by using laser, and etching the concave part. In the prior art, the numerical control equipment for processing the concave part only has the power of a spindle motor reaching about 50000 watts, the power of a laser generator for generating laser is only about 30 watts, and the etching process hardly consumes energy, so that the lens processing method disclosed by the embodiment of the invention greatly reduces the energy consumption in the processing process of the concave part of the lens compared with the traditional lens processing method. The numerical control equipment uses a cutter to process, but the actual size of the cutter of the numerical control equipment is often deviated from a theoretical value, so that the size, the position and other important parameters of the concave part of the processed lens have larger errors, and the quality of the lens is influenced. The laser processing and the etching processing avoid using a cutter, and the processing precision of the lens is improved.

According to some embodiments of the invention, the first step comprises: the outer contour is cut using a laser.

According to some embodiments of the invention, the first step further comprises: after cutting the outer contour, the lens still does not come off the raw material.

According to some embodiments of the invention, the raw material of the first step includes at least two lenses thereon, and none of the lenses is separated from the raw material.

According to some embodiments of the invention, the lens processing method comprises the following steps: and cutting the contour of the concave part on the lens by using a laser to form the concave part on the lens.

According to some embodiments of the invention, the lens processing method comprises the following steps: and processing the concave part by an etching method to smooth the surface of the concave part.

A method of lens processing according to some embodiments of the invention, the method of etching comprising: covering the lens with an anti-corrosion layer; removing the anti-corrosion layer of the area to be corroded; and etching by using a hydrofluoric acid solution.

According to some embodiments of the invention, the lens processing method comprises the following steps: performing light scanning treatment on the lens; and tempering the lens.

According to some embodiments of the invention, the lens processing method further comprises: separating the lens from the stock material.

According to some embodiments of the invention, the lens processing method further comprises: printing ink on the surface of the lens; and coating a film on the surface of the lens.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a lens according to an embodiment of the invention;

FIG. 2 is a schematic view of at least two of the lenses of an embodiment of the invention without departing from the stock material;

FIG. 3 is a flow chart of a lens processing method according to an embodiment of the invention;

FIG. 4 is a flow chart of a lens processing method according to an embodiment of the present invention in step three;

FIG. 5 is a flow chart of a method of processing a lens according to one embodiment of the present invention;

FIG. 6 is a schematic view of a lens according to one embodiment of the invention.

Reference numerals are as follows:

a recess 100, an outer contour 200.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1, the conventional lens has a concave portion 100, and the concave portion 100 can be matched with other lenses or lenses and can also adjust the light.

The recessed portion 100 may or may not be completely filled with lenses.

Taking a 2.5D lens as an example, as shown in fig. 6, the concave portion 100 of the 2.5D lens includes a planar area and an arc area connected to the planar area, and the concave portion 100 is filled with the lens.

The depression 100 may also not be completely filled with the lens, as shown in fig. 1, with the depression 100 occupying only a portion of the lens.

An embodiment of the present invention provides a lens processing method, as shown in fig. 3, including, but not limited to, step S100, step S200, step S300, and step S400.

Step S100, an outer contour 200 of the lens is cut.

The raw material is machined to cut the outer contour 200 of the lens. As shown in fig. 1, the outer contour 200 of the lens refers to the maximum contour of the lens, and does not include the specific structure of the lens.

In step S200, a concave portion 100 is cut on the lens using a laser.

The laser is used to cut the concave part 100 on the lens, and the energy consumption of the laser generator which emits the laser is far less than that of the prior art which uses numerical control equipment for processing.

In the prior art, the actual size of a cutter of a numerical control device is often deviated from a theoretical value, so that the size, the position and other important parameters of the concave part 100 of the processed lens have large errors, and the quality of the lens is affected. Errors of different cutters are different, and in the process of mass production, errors of lenses machined by different cutters are different greatly, so that the quality of products is difficult to master comprehensively.

The laser processing process does not need to use a cutter for cutting, so that errors are effectively reduced, the laser phase difference generated by different laser generators cannot be achieved, the error phase difference of the processed lens is small, and the quality of the same batch of products is easy to grasp.

In step S300, the recess 100 is etched.

In the lens after laser processing, the surface of the concave portion 100 is uneven, and a part of the material to be cut may remain on the lens, so that the lens needs to be etched.

And step S400, carrying out post-processing on the lens.

And carrying out post-processing on the lens to ensure that the performance of the lens can meet the requirement.

According to some embodiments of the invention, as shown in FIG. 4, a laser is used to cut the outer profile 200. The laser is used for cutting the outer contour 200, the energy consumption of the laser cutting is low, and the energy is saved.

According to some embodiments of the present invention, as shown in fig. 5, the lens does not separate from the raw material after cutting the outer contour 200. After the contour is cut, the lens still does not break away from the raw material, and because the lens is still on the raw material and the position of the lens on the raw material is not changed, the lens does not need to be repositioned in the subsequent processing treatment process, the subsequent processing is facilitated, the processing efficiency is increased, the error caused by repositioning is avoided, and the subsequent processing precision is improved.

As shown in fig. 1, the outer contour 200 is cut without completely cutting through the material, and the lens can be cut without leaving the material after the outer contour 200 is cut.

It should be noted that the material is not completely cut through, that the material of the fingers is completely cut through, that part of the material is not completely cut through, or that all of the material is not completely cut through.

According to some embodiments of the invention, as shown in fig. 2, the four lenses do not depart from the stock material. Because the four lenses do not separate from the raw materials, when the lenses are etched, the raw materials are etched integrally, and the etching treatment efficiency is improved. When the lens is tempered, the lens can be treated only by integrally treating the raw material, so that the tempering treatment efficiency is improved.

It should be noted that the raw material may also have two lenses, three lenses, five lenses or more lenses without departing from the raw material, and is not limited herein.

According to some embodiments of the present invention, the lens is formed with the depression 100 by using a laser to cut the contour of the depression 100 into the lens. The concave portion 100 is formed on the lens by using a laser to cut the contour of the concave portion 100 on the lens. The existing method for cutting the depressed part 100 by adopting machining needs to cut off redundant materials layer by layer through a cutter, the working is more, and more energy is consumed.

According to some embodiments of the present invention, the recess 100 is etched to smooth the surface of the recess 100. The surface of the recess 100 may be uneven after laser processing, and the recess 100 is processed by etching to make the surface of the recess 100 smooth.

According to some embodiments of the present invention, as shown in fig. 4, which is a schematic diagram of one embodiment of step S300 in fig. 1, the step S300 includes, but is not limited to, steps S310, S320 and S330.

Step S310, an anti-corrosion layer is covered on the lens.

According to some embodiments of the present invention, a paraffin layer is coated on the lens, and the paraffin layer is coated on the lens to prevent the lens from being corroded by the etching solution.

And step S320, removing the anti-corrosion layer of the area to be corroded.

And removing the paraffin layer of the corrosion area in a carving mode.

In step S330, the hydrofluoric acid solution is etched.

And (3) corroding the lens by using a hydrofluoric acid solution, wherein the to-be-corroded area is corroded due to the absence of the paraffin layer, and the paraffin layer covered on other areas is not corroded.

It should be noted that the anti-corrosion layer may also be other substances that do not react with the hydrofluoric acid solution, and the embodiment of the present invention is not limited thereto.

According to some embodiments of the present invention, as shown in fig. 5, which is a schematic diagram of one embodiment of step S400 in fig. 1, the step S400 includes, but is not limited to, steps S410, S420, S430, S440, and S450.

Step S410, a light sweeping process is performed on the lens.

According to some embodiments of the invention, the lens is subjected to light scanning treatment, so that the surface of the lens is smoother, and the optical performance of the lens is improved.

And step S420, tempering the lens.

According to some embodiments of the invention, the lens is tempered, so that the lens obtains higher strength.

Step S430, the lens is separated from the raw material.

The lenses are completely cut from the stock material using a laser.

Step S440, printing ink on the surface of the lens.

According to some embodiments of the invention, the lens surface is printed with ink to improve the optical properties of the lens.

Step S450, coating a film on the surface of the lens.

According to some embodiments of the invention, an antireflection coating is coated on the surface of the lens to increase the light transmission of the lens.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A lens processing method, comprising:

firstly, cutting an outer contour of the lens on a raw material;

step two, cutting a concave part on the lens by using laser;

step three, etching the concave part;

and step four, performing post-processing on the lens.

2. The lens processing method of claim 1, wherein the first step comprises:

the outer contour is cut using a laser.

3. The lens processing method of claim 2, wherein the first step further comprises:

after cutting the outer contour, the lens still does not come off the raw material.

4. The method of claim 3, wherein the raw material of the first step includes at least two lenses, and none of the lenses is separated from the raw material.

5. The lens processing method according to claim 1, wherein the second step comprises:

and cutting the contour of the concave part on the lens by using a laser to form the concave part on the lens.

6. The lens processing method of claim 1, wherein the third step comprises:

and processing the concave part by an etching method to smooth the surface of the concave part.

7. The lens processing method of claim 6, wherein the etching method comprises:

covering the lens with an anti-corrosion layer;

removing the anti-corrosion layer of the area to be corroded;

and etching by using a hydrofluoric acid solution.

8. The lens processing method of claim 4, wherein the fourth step comprises:

performing light scanning treatment on the lens;

and tempering the lens.

9. The lens processing method of claim 8, wherein the fourth step further comprises:

separating the lens from the stock material.

10. The lens processing method of claim 9, wherein the fourth step further comprises:

printing ink on the surface of the lens;

and coating a film on the surface of the lens.