WO2021120160A1

WO2021120160A1 - Lens structure and lens ink-coating method

Info

Publication number: WO2021120160A1
Application number: PCT/CN2019/126913
Authority: WO
Inventors: 韦传冬
Original assignee: 诚瑞光学(常州)股份有限公司
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-06-24

Abstract

A lens structure, comprising a lens barrel (1) and a lens assembly (2), the lens assembly (2) comprising at least one lens (21), a fitting gap (001) being formed between the side wall (211) of the lens assembly (2) and the inner surface of the lens barrel (1), the lens structure also comprising an ink storage component (3) arranged in the fitting gap (001), solidified ink being stored in the ink storage component (3), and the ink being capable of changing into a liquid state when heated and flowing out from the ink storage component (3). A lens ink-coating method: accommodating the lens (21) and the ink storage component (3) in turn in the lens barrel (1), such that the ink storage component (3) is positioned in the fitting gap (001) formed by the side wall (211) of the lens assembly (2) and the inner surface (121) of the lens barrel (1), and adjusting the angle and position of the lens structure such that the direction of extension of the optical axis of the lens assembly (2) is the same as the direction of gravity; and heating the ink storage component (3) such that the ink melts into a liquid state and flows out from the ink storage component (3) into the fitting gap (001). The optical performance of the lens structure is improved and the ink-coating process is simple, assembly of the used components is simple, and ink coating efficiency is high.

Description

Lens structure and lens ink coating method

Technical field

The invention belongs to the technical field of optical lenses, and particularly relates to a lens structure and a lens ink coating method.

Background technique

With the continuous development of science and technology, people are pursuing better quality for various functions of electronic devices. The various functions of electronic devices depend to a large extent on the quality of their hardware. Among them, the camera function needs to depend on the lens structure.

The related art lens structure usually includes a lens barrel and a lens group housed in the lens barrel. The lens barrel has a light hole. When light enters the lens group through the light hole, it will be mixed with some stray light, and this part of the stray light is in the lens group. Under the action of refraction and reflection, stray light is easily generated on the side of the lens group and the inner surface of the lens barrel, which affects the quality of shooting.

technical problem

The purpose of the present invention is to provide a lens structure and a lens ink application method, which can effectively absorb the stray light reflected to the inner wall of the lens barrel, improve the optical performance of the lens structure, and have simple ink application procedures, simple assembly of components used, and ink application efficient.

Technical solutions

The technical solution of the present invention is as follows: a lens structure is provided, which includes a lens barrel with an accommodation space and a lens assembly accommodated in the lens barrel, the lens barrel includes a top wall with a light through hole and a top wall from the top The peripheral edge of the wall extends toward the image side of the tube wall, the tube wall includes an inner surface close to the optical axis, the lens assembly includes at least one lens, and the lens assembly abuts on the inner surface and is in contact with the inner surface. A mating gap is formed between the surfaces, and the lens structure further includes an ink storage component arranged in the mating gap. The ink storage component stores solidified ink. The ink can become liquid when heated and change from the Flow out of the ink storage part.

Further, the lens assembly includes at least two adjacent lenses, the lens structure further includes a shading plate sandwiched between the adjacent lenses, the shading plate and the inner surface of the lens barrel In abutment, the lens includes a side wall close to the inner surface, and the matching gap is formed by enclosing the side wall of the lens, the inner surface of the lens barrel, and the shading plate.

Further, the lens structure further includes a light-shielding sheet sandwiched between the lens and the light-shielding plate, and the light-shielding sheet separates the matching gap into a first sub-gap close to the light-passing hole and The second sub-gap on the side of the shading sheet away from the light through hole, and the ink storage component is arranged in the first sub-gap or the second sub-gap.

Further, the lens assembly includes at least two adjacent lenses, the lenses include side walls close to the inner surface, and the matching gap is defined by the side walls of the adjacent lenses and the lens barrel. The inner surface is enclosed and formed.

Further, the lens structure further includes a light-shielding sheet sandwiched between two adjacent lenses, and the light-shielding sheet separates the matching gap into a third sub-gap close to the light-passing hole and a third sub-gap located at the light-passing hole. A fourth sub-gap on the side of the shading sheet away from the light through hole, and the ink storage component is arranged in the third sub-gap or the fourth sub-gap.

Further, the ink storage member has a porous structure.

Further, the ink storage member has a metal mesh structure or is made of a porous foam material.

Further, the ink storage component has a ring structure, and the ink storage component is arranged coaxially with the light through hole.

Further, the inner surface of the lens barrel is recessed in a direction away from the optical axis to form an embedding groove, and the lens is embedded in the embedding groove.

Further, the ink is consolidated in the ink storage component by freezing.

Furthermore, a method for applying ink to a lens is provided, which is applied to any of the lens structures described above, and includes the following steps:

Step 1: The lens and the ink storage component are sequentially housed in the lens barrel, and the ink storage component is located between the lens assembly and the inner surface of the lens barrel. Within the fit gap;

Step 2: Adjust the angle and position of the lens structure so that the extension direction of the optical axis of the lens assembly is consistent with the direction of gravity;

Step 3: Heat the ink storage component, so that the ink melts into a liquid state, flows out of the ink storage component and flows into the matching gap, covering the inner surface of the lens barrel and/or the One side of the lens assembly close to the inner surface.

Further, before the step one, the method further includes the step of: immersing the ink storage component in the ink and then freezing the ink to consolidate the ink in the ink storage component.

Beneficial effect

The beneficial effects of the present invention are:

By storing the consolidated ink in the ink storage component, and setting the ink storage component in the matching gap formed between the lens assembly and the inner surface of the lens barrel, after the ink storage component is heated, the consolidated ink is heated It becomes liquid and flows into the fitting gap to cover the inner surface of the lens barrel and/or the surface of the lens assembly near the optical axis, so as to achieve the purpose of absorbing stray light. The ink coating process of this solution is simple, and the components used are simple to assemble, and improve The ink coating efficiency of the lens structure is improved.

Description of the drawings

FIG. 1 is a schematic cross-sectional view of the lens structure of the present invention when it is being placed;

2 is a schematic cross-sectional view of the lens structure of the present invention when it is placed upside down;

Figure 3 is a flow chart of the method for applying ink to the lens of the present invention;

Fig. 4 is an enlarged view of part A in Fig. 1;

Figure 5 is an enlarged view of part B in Figure 1;

Figure 6 is an enlarged view of part C in Figure 2;

Fig. 7 is an enlarged view of part D in Fig. 1;

Fig. 8 is an enlarged view of part E in Fig. 1;

Fig. 9 is an enlarged view of part F in Fig. 2.

Embodiments of the present invention

The present invention will be further described below in conjunction with the drawings and embodiments.

In this embodiment, as shown in Figs. 1-2, a lens structure is provided, which includes a lens barrel 1 with a receiving space and a lens assembly 2 accommodated in the lens barrel 1. The lens barrel 1 includes a light-through hole 002. The top wall 11 of the top wall 11 and the tube wall 12 extending from the periphery of the top wall 11 to the image side. The tube wall 12 includes an inner surface 121 close to the optical axis. The lens assembly 2 includes at least one lens 21, and the lens assembly 2 abuts against the inner surface. The surface 121 and the inner surface 121 form a matching gap 001. The lens structure also includes an ink storage component 3 arranged in the matching gap 001. The ink storage component 3 stores solidified ink, which can become liquid when heated. It flows out from the ink storage part 3.

By storing the solidified ink in the ink storing part 3 and setting the ink storing part 3 in the fitting gap 001 formed between the lens assembly 2 and the inner surface 121 of the lens barrel 1, after the ink storing part 3 is heated After being heated, the consolidated ink becomes liquid and flows into the fitting gap 001 to cover the inner surface 121 of the lens barrel 1 and/or the surface of the lens assembly 2 near the optical axis. The covered ink can achieve the purpose of absorbing stray light. The ink application process of the scheme is simple, and the components used are simple to assemble, which improves the ink application efficiency of the lens structure.

The ink storage member 3 has a porous structure, and the porous structure can increase the surface area and the ink storage space inside the ink storage member 3, thereby realizing the function of storing ink. The ink storage part 3 can be a metal mesh structure, that is, made of metal materials. The metal materials can be copper, aluminum, titanium, silver, gold, etc., or alloy materials such as stainless steel, aluminum alloy, titanium alloy, etc., using metal materials On the one hand, the structural strength of the ink storage component 3 can be improved, and on the other hand, the good thermal conductivity of the metal material can make the ink radiate or absorb heat more efficiently, thereby improving the processing efficiency. The ink storage part 3 can also be made of porous foam material, such as foam, sponge, etc., which can increase the ink absorption, and because the porous foam material has elasticity and light weight, it can be compressed to reduce the occupied space and reduce the lens. The quality of the structure. In other embodiments, the ink storage member 3 can also be made of other porous structure materials, whether it is an organic material or an inorganic material, as long as it is a material that can absorb and store ink and release the ink, which is not limited herein.

The ink storage component 3 has a ring structure, and the ink storage component 3 is arranged coaxially with the light-passing hole 002. Since the ink storage component 3 is a closed ring, the ink flowing from the ink storage component 3 can evenly flow into the fitting gap 001 and flow to the surface of the corresponding component under the action of gravity, so that the corresponding surface can absorb stray light.

The fitting gap 001 can be formed by enclosing different components, and two situations are shown in this embodiment.

In the first case, referring to FIGS. 1-6, the lens assembly 2 includes at least two adjacent lenses 21, and the lens structure also includes a shading plate 5 sandwiched between the adjacent lenses 21, the shading plate 5 and the lens barrel The inner surface 121 of 1 abuts, the lens 21 includes a side wall 211 close to the inner surface 121, and the mating gap 001 is enclosed by the side wall 211 of the lens 21, the inner surface 121 of the lens barrel 1, and the shading plate 5. Specifically, with reference to Figures 1 and 4, the inner surface 121 of the lens barrel 1 is recessed in a direction away from the optical axis to form an embedding groove 003, the lens 21 is embedded in the embedding groove 003, and the groove wall of the embedding groove 003 (that is, the lens barrel 1 inner surface 121), the side wall 211 of the lens 21 and the shading plate 5 jointly enclose a matching gap 001. The ink storage part 3 is placed in the matching gap 001. After heating, the ink can flow to the surface of the shading plate 5 and the lens Between the inner surface 121 of the cylinder 1. Further, in conjunction with Figure 1, Figure 2, Figure 5 and Figure 6, the lens structure may also include a shading sheet 4 sandwiched between the lens 21 and the shading plate 5. The shading sheet 4 divides the matching gap 001 close to the light-through hole The first sub-gap 0011 of 002 and the second sub-gap 0012 on the side of the light-shielding sheet 4 away from the light-passing hole 002, the ink storage part 3 can be set in the first sub-gap 0011 or the second sub-gap according to the actual ink application position In 0012, when heating, the lens structure should be placed with the object side down (Figure 1) or the image side down (Figure 2) according to the actual situation.

In the second case, in conjunction with Figure 1, Figure 2, Figure 7, Figure 8 and Figure 9, the lens assembly 2 includes at least two adjacent lenses 21, the lens 21 includes a side wall 211 close to the inner surface 121, a matching gap 001 It is formed by enclosing the side walls 211 of two adjacent lenses 21 and the inner surface 121 of the lens barrel 1. Specifically, in conjunction with Figures 1 and 7, two adjacent lenses 21 are embedded in the lens barrel 1, the ink storage part 3 is accommodated in the matching gap 001, and the ink storage part 3 can be heated to melt the ink and flow to The surface of the corresponding part. Further, in conjunction with FIGS. 1 and 8 and FIGS. 2 and 9, the lens assembly 2 also includes a light-shielding sheet 4 sandwiched between two adjacent lenses 21, and the light-shielding sheet 4 divides the fitting gap 001 close to the light-passing hole The third sub-gap 0013 of 002 and the fourth sub-gap 0014 on the side of the light-shielding sheet 4 away from the light-through hole 002. The ink storage part 3 is arranged in the third sub-gap 0013 or the fourth sub-gap 0014. When heated, the lens structure According to the actual situation, adopt the placement method with the object side facing down (Figure 1) or the image side facing down (Figure 2).

In this embodiment, the ink is solidified in the ink storage component 3 by a freezing method. Specifically, the ink storage component 3 absorbs and stores the ink and then freezes to consolidate the ink. After that, the ink storage component 3 can be assembled.

In this embodiment, as shown in FIG. 3, a method for applying ink to a lens is provided, which is applied to the above-mentioned lens structure, and includes the following steps:

S1: The lens 21 and the ink storage part 3 are sequentially housed in the lens barrel 1, and the ink storage part 3 is located in the fitting gap 001 formed between the lens assembly 2 and the inner surface 121 of the lens barrel 1;

S2: Adjust the angle and position of the lens structure so that the extension direction of the optical axis of the lens assembly 2 is consistent with the direction of gravity; that is, adjust the lens structure to place the object side down as shown in Figure 1 or the side up as shown in Figure 2 .

S3: Heat the ink storage component 3 to melt the ink into a liquid state, flow out of the ink storage component 3 and flow into the matching gap 001, covering the inner surface 121 of the lens barrel 1 and/or the side of the lens assembly 2 close to the inner surface 121 .

Before S1, it also includes the step of immersing the ink storage member 3 in the ink and then freezing the ink to consolidate the ink in the ink storage member 3.

In summary, the present application stores the consolidated ink in the ink storage component 3, and arranges the ink storage component 3 in the matching gap 001 formed between the lens assembly 2 and the inner surface 121 of the lens barrel 1, in order to After the ink storage part 3 is heated, the consolidated ink becomes liquid after being heated and flows into the fitting gap 001 to cover the inner surface 121 of the lens barrel 1 and/or the side wall 211 of the lens 21, so as to achieve the purpose of absorbing stray light. In addition, the present application provides a simple and convenient method for applying ink to the lens, the ink application process is simple, and the components used are simple to assemble, which effectively improves the ink application efficiency of the lens structure.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A lens structure includes a lens barrel with a receiving space and a lens assembly contained in the lens barrel. The lens barrel includes a top wall with a light-passing hole and a peripheral edge extending from the top wall to the image side. The tube wall includes an inner surface close to the optical axis, the lens assembly includes at least one lens, and the lens assembly abuts against the inner surface and forms a mating gap with the inner surface. It is characterized in that, the lens structure further includes an ink storage component arranged in the matching gap, and the ink storage component stores solid ink, and the ink can become liquid when heated and will be removed from the ink storage component. Outflow.
The lens structure according to claim 1, wherein the lens assembly includes at least two adjacent lenses, and the lens structure further comprises a shading plate sandwiched between the adjacent lenses, and the shading plate The plate abuts against the inner surface of the lens barrel, the lens includes a side wall close to the inner surface, and the matching gap is determined by the side wall of the lens and the inner surface of the lens barrel. It is enclosed and formed with the light-shielding board.
The lens structure according to claim 2, wherein the lens structure further comprises a shading sheet sandwiched between the lens and the shading plate, and the shading sheet separates the matching gap close to the lens. The first sub-gap of the light-passing hole and the second sub-gap on the side of the light-shielding sheet away from the light-passing hole, and the ink storage component is arranged in the first sub-gap or the second sub-gap .
The lens structure according to claim 1, wherein the lens assembly includes at least two adjacent lenses, the lenses include side walls close to the inner surface, and the matching gap is defined by the adjacent lenses. The side wall and the inner surface of the lens barrel are enclosed and formed.
The lens structure according to claim 4, wherein the lens structure further comprises a shading sheet sandwiched between two adjacent lenses, and the shading sheet separates the matching gap close to the The third sub-gap of the light-passing hole and the fourth sub-gap on the side of the shading sheet away from the light-passing hole, and the ink storage component is arranged in the third sub-gap or the fourth sub-gap.
The lens structure according to claim 1, wherein the ink storage member is a porous structure.
The lens structure according to claim 6, wherein the ink storage member is a metal mesh structure or is made of a porous foam material.
The lens structure according to claim 1, wherein the ink storage component is a ring structure, and the ink storage component is arranged coaxially with the light-passing hole.
The lens structure according to claim 1, wherein the inner surface of the lens barrel is recessed in a direction away from the optical axis to form an embedding groove, and the lens is embedded in the embedding groove.
The lens structure according to claim 1, wherein the ink is solidified in the ink storage component by a freezing method.
A method for applying ink to a lens, applied to the lens structure according to any one of claims 1-10, characterized in that it comprises the following steps:

Step 1: The lens and the ink storage component are sequentially housed in the lens barrel, and the ink storage component is located between the lens assembly and the inner surface of the lens barrel. Within the fit gap;

Step 2: Adjust the angle and position of the lens structure so that the extension direction of the optical axis of the lens assembly is consistent with the direction of gravity;

Step 3: Heat the ink storage component, so that the ink melts into a liquid state, flows out of the ink storage component and flows into the matching gap, covering the inner surface of the lens barrel and/or the One side of the lens assembly close to the inner surface.
The method for applying ink to a lens according to claim 11, further comprising the step of: immersing the ink storage member in the ink and then freezing the ink to make the ink consolidate in the ink storage. Within the part.