阅读说明：本技术 光学镜片及光学镜片的制作方法 (Optical lens and manufacturing method thereof ) 是由 徐春慧 戴付建 赵烈烽 于 2019-10-18 设计创作，主要内容包括：本发明提供了一种光学镜片及光学镜片的制作方法。光学镜片包括：光学部；非光学部,与光学部连接；亲水微结构层,设置在非光学部的表面上,亲水微结构层的远离非光学部的表面形成待涂墨的涂墨区域。本发明的技术方案提供了一种设置有微结构的光学镜片,利用该光学镜片自身结构的改进,可以减少在涂墨过程中,涂墨不均匀且容易溢墨的情况发生。(The invention provides an optical lens and a manufacturing method thereof. The optical lens includes: an optical portion; a non-optical portion connected to the optical portion; and the hydrophilic microstructure layer is arranged on the surface of the non-optical part, and the surface of the hydrophilic microstructure layer far away from the non-optical part forms an ink coating area to be coated with ink. The technical scheme of the invention provides an optical lens with a microstructure, and the condition that ink is not uniformly coated and easily overflows in the ink coating process can be reduced by improving the structure of the optical lens.)

1. An optical lens, characterized in that it comprises:

an optical portion (10);

a non-optical portion (20) connected to the optical portion (10);

the hydrophilic microstructure layer (21) is arranged on the surface of the non-optical part (20), and the surface of the hydrophilic microstructure layer (21) far away from the non-optical part (20) forms an ink coating area to be coated with ink.

2. The optical lens according to claim 1, characterized in that it further comprises a hydrophobic microstructure layer (22) provided on the surface of the non-optical portion (20), said hydrophobic microstructure layer (22) being spaced apart from said hydrophilic microstructure layer (21); or the hydrophobic microstructure layer (22) is in contact with the hydrophilic microstructure layer (21) so that a hydrophobic area is formed on the surface of the hydrophobic microstructure layer (22) far away from the non-optical part (20).

3. The optical lens according to claim 2, characterized in that it comprises two spaced-apart hydrophobic microstructure layers (22), said hydrophilic microstructure layer (21) being located between the two hydrophobic microstructure layers (22).

4. The optical lens according to claim 3, characterized in that one of the two hydrophobic microstructure layers (22) is arranged close to the optical portion (10) and the other is arranged at the edge of the non-optical portion (20).

5. The optical lens according to any of the claims 2 to 4, characterized in that the hydrophobic microstructure layer (22) is a ring-like structure centered on the center of the optical portion (10).

6. The optical lens according to any of the claims 1 to 4, characterized in that the hydrophilic microstructure layer (21) comprises a plurality of first microstructures (211) arranged in parallel.

7. The optical lens according to claim 2 or 3, characterized in that the hydrophobic microstructure layer (22) comprises a plurality of spaced apart second microstructures (221).

8. A method for manufacturing an optical lens, wherein the optical lens comprises an optical portion (10) and a non-optical portion (20) connected with the optical portion, the method comprising:

step S05: manufacturing an optical part (10) and a non-optical part (20) by an injection molding mode;

step S10: and a hydrophilic microstructure layer (21) is arranged on the surface of the non-optical part (20), and an ink coating area to be coated with ink is formed on the surface of the hydrophilic microstructure layer (21) far away from the non-optical part (20).

9. The method of manufacturing according to claim 8, further comprising step S20: and arranging a hydrophobic microstructure layer (22) on the surface of the non-optical part (20) so as to form a hydrophobic area on the surface of the hydrophobic microstructure layer (22) far away from the non-optical part (20).

10. The manufacturing method according to claim 9, wherein in step S20, the manufacturing method further comprises a step S21 of providing two hydrophobic microstructure layers (22) on the surface of the non-optical portion (20), and a hydrophilic microstructure layer (21) is located between the two hydrophobic microstructure layers (22).

Technical Field

The invention relates to the field of optical lenses, in particular to an optical lens and a manufacturing method of the optical lens.

Background

In the field of optical lenses, the optical lens comprises an optical part and a non-optical part, wherein the surface of the non-optical part needs to be coated with ink to reduce stray light and reflected light generated by the non-optical part, so that the imaging quality of the optical lens is improved. Meanwhile, the ink coating process can improve the appearance of the optical lens.

Disclosure of Invention

The invention mainly aims to provide an optical lens and a manufacturing method thereof.

In order to achieve the above object, according to one aspect of the present invention, there is provided an optical lens comprising: an optical portion; a non-optical portion connected to the optical portion; and the hydrophilic microstructure layer is arranged on the surface of the non-optical part, and the surface of the hydrophilic microstructure layer far away from the non-optical part forms an ink coating area to be coated with ink.

Furthermore, the optical lens also comprises a hydrophobic microstructure layer arranged on the surface of the non-optical part, and the hydrophobic microstructure layer and the hydrophilic microstructure layer are arranged at intervals; or the hydrophobic microstructure layer is contacted with the hydrophilic microstructure layer, so that a hydrophobic area is formed on the surface of the hydrophobic microstructure layer far away from the non-optical part.

Further, the optical lens comprises two hydrophobic microstructure layers which are arranged at intervals, and the hydrophilic microstructure layer is positioned between the two hydrophobic microstructure layers.

Further, one of the two hydrophobic microstructure layers is disposed near the optic and the other is disposed at the edge of the non-optic.

Further, the hydrophobic microstructure layer is a ring-shaped structure centered on the center of the optical portion.

Further, the width dimension of the ring-shaped structure is 0.05mm-1 mm.

Further, the hydrophilic microstructure layer includes a plurality of first microstructures arranged in parallel.

Further, the first microstructures include arc-shaped protrusions or rectangular protrusions or trapezoidal protrusions.

Further, the hydrophobic microstructure layer comprises a plurality of second microstructures which are arranged at intervals.

Further, the interval between two adjacent second microstructures is 100nm-10000 nm; alternatively, the second microstructure is a groove.

According to another aspect of the present invention, there is provided a method for manufacturing an optical lens, the optical lens including an optical portion and a non-optical portion connected to the optical portion, the method comprising: step S05: manufacturing an optical part and a non-optical part by an injection molding mode; step S10: and arranging a hydrophilic microstructure layer on the surface of the non-optical part, wherein the surface of the hydrophilic microstructure layer far away from the non-optical part forms an ink coating area to be coated with ink.

Further, the manufacturing method further includes step S20: and arranging a hydrophobic microstructure layer on the surface of the non-optical part so as to form a hydrophobic area on the surface of the hydrophobic microstructure layer far away from the non-optical part.

Further, the hydrophobic microstructure layer is manufactured by adopting a turning or photoetching technology.

Further, in step S20, the manufacturing method further includes step S21 of disposing two hydrophobic microstructure layers on the surface of the non-optical portion, and the hydrophilic microstructure layer is located between the two hydrophobic microstructure layers.

Further, in step S20, the manufacturing method further includes step S22 of disposing the hydrophobic microstructure layer as a ring-shaped structure centered on the center of the optical portion.

By applying the technical scheme of the invention, the hydrophilic microstructure layer is arranged on the surface of the non-optical part, and the hydrophilic microstructure layer has strong hydrophilicity, so that the surface of the hydrophilic microstructure layer has strong ink adsorption capacity, and meanwhile, the hydrophilic microstructure layer can improve the uniformity and infiltration speed of ink coating.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of an optical lens according to the invention;

FIG. 2 shows a schematic structural view of the hydrophobic microstructure layer of the optical lens of FIG. 1;

FIG. 3 shows a schematic structural view of the hydrophilic microstructure layer of the optical lens of FIG. 1;

FIG. 4 is a schematic diagram showing a substrate of the hydrophobic microstructure layer of the optical lens of FIG. 1 after a photoresist is sprayed on the substrate;

FIG. 5 shows a schematic diagram of the structure of the optical lens of FIG. 1 after exposure of a photoresist on a substrate of the hydrophobic microstructure layer;

FIG. 6 shows a schematic diagram of the optical lens of FIG. 1 after development of a photoresist on the substrate of the hydrophobic microstructure layer;

FIG. 7 shows a schematic diagram of the structure of the optical lens of FIG. 1 after etching of the substrate of the hydrophobic microstructure layer; and

FIG. 8 is a schematic diagram of the optical lens of FIG. 1 after the hydrophobic microstructure layer removes the excess photoresist;

wherein the figures include the following reference numerals:

10. an optical portion; 20. a non-optic portion; 21. a hydrophilic microstructured layer; 211. a first microstructure; 22. a hydrophobic microstructure layer; 221. a second microstructure; 23. a substrate; 24. photoresist; 25. an exposure area; 26. an unexposed area; 27. and (3) water molecules.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to reduce the problems of uneven ink coating and easy ink overflow in the ink coating process, thereby improving the ink coating efficiency and the product yield, the invention and the embodiment of the invention provide an optical lens, and the structure of the optical lens is improved and is different from the structure of the existing optical lens.

It should be noted that, in the embodiments of the present invention and the present invention, the hydrophilic microstructure layer 21 is relative to the hydrophobic microstructure layer 22, that is, the hydrophilic microstructure layer 21 has a greater ability to absorb liquid such as ink or water molecules than the hydrophobic microstructure layer 22.

As shown in fig. 1, in the embodiment of the present invention, the optical lens includes an optical portion 10, a non-optical portion 20, and a hydrophilic microstructure layer 21. Wherein, the non-optical part 20 is connected with the optical part 10; a hydrophilic micro-structured layer 21 is provided on the surface of the non-optical portion 20, the surface of the hydrophilic micro-structured layer 21 remote from the non-optical portion 20 forming an inking area to be inked.

According to the arrangement, the hydrophilic microstructure layer 21 is arranged on one surface of the non-optical part 20, and as the hydrophilic microstructure layer 21 is very hydrophilic (namely the hydrophilic microstructure layer 21 has very strong adsorbability to water molecules 27, the surface of the hydrophilic microstructure layer 21 is easily wetted by water), the surface of the hydrophilic microstructure layer 21 has very strong adsorbability to ink, and meanwhile, the hydrophilic microstructure layer 21 also improves the uniformity and infiltration speed of ink coating, so that when ink is directly coated on at least part of the surface of the hydrophilic microstructure layer 21, the problems of uneven ink coating and easy ink overflow can be reduced, the ink coating efficiency on the non-optical part 20 is improved, the imaging quality of the optical lens is ensured, and the qualification rate of the optical lens is improved.

In an embodiment of the invention, as shown in fig. 1, the hydrophobic microstructure layer 22 is in contact with the hydrophilic microstructure layer 21 such that the surface of the hydrophobic microstructure layer 22 remote from the non-optical portion 20 forms hydrophobic areas.

In the above arrangement, since the hydrophobic microstructure layer 22 has strong water resistance (i.e. the hydrophobic microstructure layer 22 has poor adsorbability to water molecules 27, and the surface of the hydrophobic microstructure layer 22 is hardly wetted by water), the hydrophobic microstructure layer 22 has poor adsorbability to ink, so that the ink does not adhere to the surface of the hydrophobic microstructure layer 22, thereby preventing the ink from overflowing from the inking region to the optical portion 10 region to affect the imaging quality of the optical lens, further ensuring the imaging quality of the optical lens, and improving the qualification rate of the optical lens.

Of course, in an alternative embodiment not shown in the drawings, it is also possible to arrange the hydrophobic microstructure layer 22 at a distance from the hydrophilic microstructure layer 21.

As shown in fig. 1, in the embodiment of the present invention, the optical lens includes two hydrophobic microstructure layers 22 disposed at intervals, and the hydrophilic microstructure layer 21 is located between the two hydrophobic microstructure layers 22.

According to the above arrangement, the hydrophilic microstructure layer 21 is located between the two hydrophobic microstructure layers 22, that is, the ink-coated region formed on the surface of the hydrophilic microstructure layer 21 is located between the two hydrophobic microstructure layers 22. Because the hydrophobic microstructure layer 22 has poor adsorption capacity to ink, the ink is not adhered to the surface of the hydrophobic microstructure layer 22, and the hydrophobic microstructure layer 22 can prevent the ink from overflowing from an ink coating area, so that the imaging quality of the optical lens is prevented from being influenced by the ink overflowing to the optical part 10 area, and the qualification rate of the optical lens is further improved.

Specifically, as shown in fig. 1, one of two hydrophobic microstructure layers 22 is disposed close to the optical portion 10, the other is disposed at the edge of the non-optical portion 20, a hydrophilic microstructure layer 21 is disposed between the two hydrophobic microstructure layers 22, and the hydrophilic microstructure layer 21 and the two hydrophobic microstructure layers 22 are both ring-shaped structures centered at the center of the optical portion 10.

In the above arrangement, the hydrophobic microstructure layer 22 is disposed at the edge of the non-optical portion 20, which is beneficial to reducing the size of the optical lens, avoiding affecting the optical portion, and further ensuring the imaging quality of the optical lens.

Preferably, the width dimension of the ring-shaped structure formed by the hydrophobic micro-structure layer 22 is set to 0.05mm to 1 mm. Analysis shows that the ink is more uniformly applied and ink overflow is less likely to occur when the width of the annular structure is set within the above range.

Of course in alternative embodiments not shown in the drawings it is also possible to provide, for example, a hydrophobic microstructure layer 22 and a hydrophilic microstructure layer 21, wherein the hydrophobic microstructure layer 22 is in contact with the hydrophilic microstructure layer 21 and the surface of the hydrophobic microstructure layer 22 adjacent to the non-optic portion 20 forms hydrophobic areas. In addition, the hydrophilic microstructure layer 21 and the hydrophobic microstructure layer 22 provided at the edge of the non-optical portion 20 may be provided in other shapes such as a square shape or an oval shape, as appropriate.

As shown in fig. 3, in the embodiment of the invention, the hydrophilic microstructure layer 21 includes a plurality of first microstructures 211 arranged in parallel.

In the above arrangement, the plurality of first microstructures 211 arranged in parallel form the hydrophilic microstructure layer 21, and the contact angle γ 2 formed between the water molecules 27 and the surface of the hydrophilic microstructure layer 21 is smaller than 90 °, so that the surface of the hydrophilic microstructure layer 21 has strong hydrophilicity, that is, the ink-applying region has strong hydrophilicity, thereby improving the adsorption efficiency of the ink-applying region to ink.

Here, it should be noted that one side of the contact angle is a solid-liquid boundary line, and the other side is a tangent line of a gas-liquid interface formed at the intersection point of the gas, liquid and solid phases, and the definition of the contact angle is well known to those skilled in the art and will not be described herein.

Specifically, as shown in fig. 3, the first microstructures 211 are arc-shaped protrusions, and a plurality of interconnected first microstructures 211 are arranged in parallel around the circumference of the optical portion 10.

In the above arrangement, the hydrophilic microstructure layer 21 is formed by a plurality of arc-shaped protrusions arranged in parallel around the circumference of the optical portion 10, and the contact angle γ 2 formed between the water molecules 27 and the surface of the hydrophilic microstructure layer 21 is smaller than 90 °, so that the surface of the hydrophilic microstructure layer 21 has better hydrophilicity, that is, the ink-coated area has better hydrophilicity, and the adsorption efficiency of the ink-coated area to ink is further improved.

Alternatively, in an alternative embodiment not shown in the drawings, a plurality of interconnected first microstructures 211 may also be arranged in parallel in the radial direction of the optic 10.

Preferably, the contact angle γ 2 formed on the surface between the water molecules 27 and the hydrophilic microstructure layer 21 should be less than 45 °.

Experiments show that when the contact angle γ 2 is smaller than 45 °, the surface of the hydrophilic microstructure layer 21 has better hydrophilicity, that is, the ink-applying region has better hydrophilicity, and the adsorption efficiency of the ink-applying region to ink is further improved.

Of course, in an alternative embodiment not shown in the drawings, the first microstructures 211 may be arranged as protrusions with other shapes such as rectangular or trapezoidal, and the plurality of first microstructures 211 may be arranged at intervals.

As shown in fig. 2, in the embodiment of the present invention, the hydrophobic microstructure layer 22 includes a plurality of second microstructures 221 arranged at intervals.

In the above arrangement, the plurality of second microstructures 221 arranged at intervals form the hydrophobic microstructure layer 22, and a contact angle γ 1 formed by the water molecules 27 and the surface of the hydrophobic microstructure layer 22 is greater than 90 °, so that the drainage property of the surface of the hydrophobic microstructure layer 22 is strong, and the hydrophobic microstructure layer 22 can block ink from overflowing from an ink coating area, thereby preventing the ink from overflowing to the optical portion 10 area to affect the imaging quality of the optical lens, and further improving the yield of the product.

Specifically, as shown in fig. 2, the second microstructure 221 is a rectangular groove, and a plurality of second microstructures 221 arranged at intervals are arranged at intervals around the circumference of the optical portion 10.

In the above arrangement, the plurality of rectangular grooves arranged at intervals around the circumference of the optical portion 10 form the hydrophobic microstructure layer 22, and the contact angle γ 1 formed by the water molecules 27 on the surface of the hydrophobic microstructure layer 22 is greater than 90 °, so that the surface of the hydrophobic microstructure layer 22 has stronger drainage, and the hydrophobic microstructure layer 22 can better block ink from overflowing from an ink-applying area, thereby better preventing the ink from overflowing to the area of the optical portion 10 to affect the imaging quality of the optical lens, and further improving the yield of the product.

It should be noted that the width d of the second microstructures 221 is smaller than or equal to the spacing distance between two adjacent second microstructures 221. Of course, in an alternative embodiment not shown in the drawings, the specific width of the second microstructure 221 may be determined according to the surface tension value of the hydrophobic microstructure layer 22, and will not be described herein again.

Alternatively, in an alternative embodiment not shown in the drawings, a plurality of spaced second microstructures 221 are spaced along the radial direction of the optic 10.

Preferably, the contact angle γ 1 on the surface formed by the plurality of second microstructures 221 arranged at intervals is greater than 120 °.

Preferably, the interval between two adjacent second microstructures 221 is 100nm to 10000 nm.

Experiments show that when the interval between two adjacent second microstructures 221 is 100nm to 10000nm, the second microstructures 221 arranged at intervals are all micro-nano structures, so that the infiltration of water can be greatly reduced, the contact angle gamma 1 is larger than 120 degrees, the hydrophobic effect is realized, further, the drainage of the surface of the hydrophobic microstructure layer 22 formed by the second microstructures 221 which are periodically arranged (for example, a one-dimensional or two-dimensional grating array can be enabled to be stronger), the hydrophobic microstructure layer 22 can better block ink from overflowing from an ink coating area, further, the imaging quality of an optical lens is better prevented from being influenced by the fact that the ink overflows to the optical portion 10 area, and the qualified rate of products is further improved.

It should be noted that the width of the second microstructures 221 may be larger than the distance between two adjacent second microstructures 221. However, the width dimension of the second microstructures 221 is less than or equal to twice the spacing distance between two adjacent second microstructures 221.

Of course, in alternative embodiments not shown in the drawings, the second microstructures 221 may be arranged as grooves having other shapes, such as arc shapes or trapezoid shapes, according to practical situations.

In the embodiment of the invention, the optical lens comprises an optical part 10 and a non-optical part 20 connected with the optical part, and the manufacturing method comprises the following steps:

step S05: manufacturing an optical part 10 and a non-optical part 20 by injection molding;

step S10: a hydrophilic microstructure layer 21 is arranged on the surface of the non-optical part 20, and an ink coating area to be coated with ink is formed on the surface of the hydrophilic microstructure layer 21 far away from the non-optical part 20.

In the embodiment of the invention, the hydrophilic microstructure layer 21 is arranged, and as the surface of the hydrophilic microstructure layer 21 has strong adsorption capacity to ink, and the ink coating area to be coated with ink is formed on the surface of the hydrophilic microstructure layer 21, the microstructured ink coating area has strong adsorption capacity to ink, so that the ink coating uniformity and infiltration speed are improved, and subsequent ink coating is conveniently carried out on the ink coating area, thereby improving the ink coating efficiency on the non-optical part 20, further ensuring the imaging quality of the optical lens and improving the qualification rate of the optical lens.

Specifically, in step S10, the hydrophilic microstructure layer 21 can be formed by irradiating the surface of the non-optical portion 20 to be processed with a laser scanner. The laser used may be in the visible band, have a pulse width of 10ns-1us and a pulse frequency of 1KHz-200KHz, and have an output power in the range of 300-.

It should be noted that, in an alternative embodiment not shown in the drawings, the hydrophilic microstructure layer 21 may not have periodicity (i.e. the plurality of first microstructures 211 are not regularly distributed), wherein the size and the pitch of the protruding structures have the property of random distribution, for example, in the range of 1nm to 500um, which can be randomly selected according to the parameters during processing, such a surface can promote the wetting of the water molecules 27, so that the contact angle γ 2 is less than 90 degrees, thereby achieving the hydrophilic effect.

In the embodiment of the present invention, the manufacturing method further includes step S20: a hydrophobic microstructure layer 22 is provided on the surface of the non-optic portion 20 such that the surface of the hydrophobic microstructure layer 22 remote from the non-optic portion 20 forms a hydrophobic region.

According to the above steps, the hydrophobic microstructure layer 22 has poor adsorption capacity to the ink, so that the ink does not adhere to the surface of the hydrophobic microstructure layer 22, thereby preventing the ink from overflowing from the ink-coated area to the optical portion 10 area to affect the imaging quality of the optical lens, further ensuring the imaging quality of the optical lens, and improving the qualification rate of the optical lens.

It should be noted that the periodic micro-nano structure of the hydrophobic microstructure layer 22 (i.e. the plurality of second microstructures 221 are regularly distributed) can greatly reduce the wettability to the water molecules 27, so that the contact angle γ 1 is greater than 90 degrees, and the hydrophobic effect is further achieved, the period is preferably 100nm-10um, and the distribution mode can be a one-dimensional or two-dimensional grating array.

In the step S20, the hydrophobic microstructure layer 22 is formed by turning or photolithography.

Specifically, when the pitch between two adjacent second microstructures 221 is greater than 1um, the machining may be performed by diamond turning. The hydrophobic microstructure layer 22 is formed by cutting on the lens, for example, by a diamond cutting blade having an arc-shaped edge. When the distance between two adjacent second microstructures 221 is less than or equal to 1um, the turning precision is difficult to achieve, and a photolithography process commonly used in semiconductor processing is used.

In the present invention and the embodiments of the present invention, the hydrophilic microstructure layer 21 includes a substrate 23 and a plurality of first microstructures 211 disposed on a surface of the substrate. Optionally, the base material 23 is formed by part of the non-optic portion 10.

As shown in fig. 4 to 8, the following describes the photolithography process step S50 in detail in connection with the embodiment of the present invention:

s51: spin coating or spraying a photoresist 24 on the substrate 23;

s52: exposing on the photoresist 24 according to the design pattern;

s53: dissolving the exposed region 25 with a developing solution;

s54: etching the substrate 23;

s55: completing etching and forming a hydrophobic microstructure layer 22;

s56: the remaining photoresist 24 is removed.

In step S52, when the photoresist 24 is a positive resist, the exposed region 25 is dissolved in a developer using the unexposed region 26 as a mask. When the photoresist 24 is a negative resist, the unexposed region 26 is dissolved by a developer with the exposed region 25 as a mask. The photoresist 24 employed in the embodiment of the present invention is a positive photoresist.

In step S54, the substrate 23 is etched by a dry etching process, and the dry etching gas may be CF4, CHF3, SF6Ar, O2, or the like.

In the step S20, the manufacturing method further includes a step S21 of disposing two hydrophobic microstructure layers 22 on the surface of the non-optical portion 20, and positioning the hydrophilic microstructure layer 21 between the two hydrophobic microstructure layers 22.

In the above steps, the hydrophobic microstructure layer 22 is provided, and since the hydrophobic microstructure layer 22 has poor adsorption capacity to the ink, the ink does not adhere to the surface of the hydrophobic microstructure layer 22, and the hydrophobic microstructure layer 22 can block the ink from overflowing from the ink-coated area, thereby preventing the ink from overflowing to the optical portion 10 area to affect the imaging quality of the optical lens, and further improving the qualification rate of the optical lens.

In the above step S20, the manufacturing method further includes a step S22 of providing the hydrophobic microstructure layer 22 as a ring-shaped structure centered on the center of the optical portion 10. The annular structure is simple in structure and convenient to inject and process.

The following describes in detail the method of manufacturing an optical lens in an embodiment of the present invention:

the manufacturing method comprises the following steps:

firstly, an optical part 10 and a non-optical part 20 are manufactured in an injection molding mode; then, the optical lens is installed in a jig for processing the hydrophilic microstructure layer 21; spin-coating a photoresist 24 on an area to be processed (an area to be inked) of the optical lens; irradiating a region to be processed (region to be inked) with a laser scanning device to form a hydrophilic microstructure layer 21;

then, the optical lens is installed in a jig for processing the hydrophobic microstructure layer 22; the hydrophobic microstructure layer 22 is formed as per the above-described photolithography process step S50.

The second manufacturing method comprises the following steps:

firstly, an optical part 10 and a non-optical part 20 are manufactured in an injection molding mode; then, the optical lens is installed in a jig for processing the hydrophobic microstructure layer 22; forming the hydrophobic microstructure layer 22 according to the above-mentioned photolithography process step S50;

then, the optical lens is installed in a jig for processing the hydrophilic microstructure layer 21; spin-coating a photoresist 24 on an area to be processed (an area to be inked) of the optical lens; the region to be processed (region to be inked) is irradiated with a laser scanning device to form the hydrophilic micro-structural layer 21.

The third preparation method comprises the following steps:

firstly, an optical part 10 and a non-optical part 20 are manufactured in an injection molding mode;

then, the optical lens is installed in a jig for processing the hydrophobic microstructure layer 22; spin-coating a photoresist 24 on the region to be processed of the optical lens (the surface of the non-optical part 20);

further, the hydrophobic microstructure layer 22 is formed according to the above-mentioned photolithography process steps (S52 to S56); finally, the area to be processed (area to be inked) is irradiated by a laser scanning device to form the hydrophilic microstructure layer 21.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the hydrophilic microstructure layer is arranged on one surface of the non-optical part, and the hydrophilic microstructure layer is very strong in hydrophilicity (namely the hydrophilic microstructure layer is very strong in adsorbability to water molecules, and the surface of the hydrophilic microstructure layer is easily wetted by water), so that the surface of the hydrophilic microstructure layer is very strong in ink adsorption capacity, and meanwhile, the hydrophilic microstructure layer also improves the uniformity and infiltration speed of ink coating. Furthermore, a hydrophobic microstructure layer which is in contact with the hydrophilic microstructure layer is arranged on one surface of the non-optical part. The hydrophobic microstructure layer has poor adsorption capacity on the ink, so that the ink is not adhered to the surface of the hydrophobic microstructure layer, and the hydrophobic microstructure layer can block the ink from overflowing from an ink coating area, thereby preventing the ink from overflowing to an optical part area to influence the imaging quality of the optical lens and further improving the qualification rate of the optical lens.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.