Integrated optical lens and lens module

Abstract

The utility model belongs to the technical field of optical products, and particularly relates to an integrated optical lens and a lens module. The integrated optical lens comprises at least two lenses arranged at intervals and connecting structures connected between the adjacent lenses, and the at least two lenses and the connecting structures are connected into an integrated structure formed through injection molding. The lens side surfaces between the lens side surface positioned on the outer side of the lens at one end part and the lens side surface positioned on the outer side of the lens at the other end part are convex surfaces; the lens module comprises a lens cone and an integrated optical lens fixedly installed at a first port of the lens cone, and fastening glue is arranged between the integrated optical lens and the lens cone. The integrated optical lens is of an integrated structure formed through injection molding, during installation, the integrated optical lens can be installed as a whole, and at least two lenses of the integrated optical lens cannot generate assembly errors; the problem that the optical performance and the yield of optical products are affected due to the fact that assembly errors are prone to being generated when lenses of an existing lens module are assembled is solved.

Description

Technical Field

[0001] This utility model belongs to the field of optical product technology, and in particular relates to an integrated optical lens and lens module. Background Technology

[0002] Currently, lens modules are an important component of optical products such as cameras, AR devices, VR devices, and projection devices. Lens modules use multiple lenses to achieve light path transmission. Due to the large number of lenses and the limited installation space, assembly is not only very difficult, but also prone to assembly errors, affecting light path transmission and thus reducing the optical performance of the lens module and the yield of optical products. Utility Model Content

[0003] The purpose of this invention is to provide an integrated optical lens and lens module, which aims to solve the problem that assembly errors are easily generated during the assembly of existing lens modules, thus affecting optical performance and the yield of optical products.

[0004] This utility model discloses an integrated optical lens, which includes at least two lenses spaced apart. The lens side surface located at one end and the lens side surface located at the other end are both convex. A connecting structure is provided between adjacent lenses. The connecting structure includes two connecting walls evenly distributed along the circumference of the lens. The inner side surface of the adjacent side of the two connecting walls is flat. The connection structure between the at least two lenses and the connecting structure between adjacent lenses is an injection-molded integrated structure.

[0005] As an improvement, the lens has two parts, namely a first lens and a second lens. The side of the first lens away from the second lens is a first light-incident surface, and the side of the first lens closer to the second lens is a first light-outceasing surface. The side of the second lens closer to the first lens is a second light-incident surface, and the side of the second lens closer to the first lens is a second light-outceasing surface. The first light-outceasing surface and the second light-incident surface are convex surfaces, and the first light-incident surface and the second light-outceasing surface are concave surfaces, convex surfaces, or flat surfaces.

[0006] As an improvement, the lens has at least three parts, and the two connecting walls of the connecting structure between adjacent lenses are arranged in a one-to-one correspondence.

[0007] As an improvement, the inner surface of the connecting wall is inclined, and an acute angle α is provided between the inner surface of the connecting wall and the axis of the lens. The distance between the inner surfaces of the two connecting walls increases sequentially along the optical path transmission direction.

[0008] This utility model also discloses a lens module, which includes a lens barrel, a first port on the light-incident side of the lens barrel corresponding to the light transmission direction, and a second port on the light-outcident side of the lens barrel corresponding to the light transmission direction; it also includes an integrated optical lens fixedly installed at the first port of the lens barrel, and a fastening adhesive is provided between the integrated optical lens and the lens barrel.

[0009] As an improvement, the integrated optical lens is disposed inside the lens barrel, and the fastening adhesive is disposed between the first port of the lens barrel and the corresponding side of the integrated optical lens.

[0010] As an improvement, the integrated optical lens is disposed outside the lens barrel and inserted into the first port of the lens barrel. A light-shielding ring is provided on the outer periphery of the integrated optical lens, and the fastening adhesive is disposed between the first port of the lens barrel and the corresponding side of the integrated optical lens.

[0011] As an improvement, the integrated optical lens is disposed at the first port of the lens barrel as an incident light-side lens, and a retaining ring is provided at the inner ring side of the second port of the lens barrel; the lens module also includes an exit light-side lens disposed inside the lens barrel and fixed at the second port of the lens barrel.

[0012] As an improvement, a middle transmission lens is provided between the integrated optical lens and the light-emitting side lens.

[0013] As an improvement, the central transmission lens is provided as one piece, and a spacer ring is provided between the central transmission lens and the light-emitting side lens; or, the central transmission lens is provided as at least two pieces, and spacer rings are provided between the central transmission lens adjacent to the light-emitting side lens and the light-emitting side lens, and between adjacent central transmission lenses.

[0014] The beneficial effects achieved by adopting the above technical solution are as follows:

[0015] The integrated optical lens of this invention includes at least two lenses spaced apart, with the lens side surfaces located on the outer side of one end and the lens side surface located on the outer side of the other end both being convex surfaces; a connecting structure connecting adjacent lenses includes two connecting walls evenly distributed along the circumference of the lenses, with the inner surfaces of the adjacent sides of the two connecting walls being flat; the connection structure between the at least two lenses and adjacent lenses is an injection-molded integrated structure. The lens module of this invention includes a lens barrel, with the port on the light-incident side of the lens barrel corresponding to the light transmission direction being a first port, and the port on the light-outcident side of the lens barrel corresponding to the light transmission direction being a second port; it also includes an integrated optical lens fixedly installed at the first port of the lens barrel, with fastening adhesive provided between the integrated optical lens and the lens barrel.

[0016] Since the integrated optical lens is a one-piece structure formed by injection molding, the relative position between at least two lenses remains fixed after injection molding. During installation, the integrated optical lens can be directly installed on the lens barrel. There will be no assembly error between at least two lenses of the integrated optical lens, which can improve optical performance and optical product yield. This solves the problem that assembly errors are easy to occur during the assembly of existing lens modules, which affect optical performance and optical product yield. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the integrated optical lens of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the integrated optical lens of this utility model;

[0019] Figure 3 This is a schematic diagram of the injection molding mold for the integrated optical lens of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the lens module according to the first embodiment of this utility model;

[0021] Figure 5 This is a cross-sectional structural diagram of the lens module according to the first embodiment of this utility model;

[0022] Figure 6 This is an exploded view of the lens module according to the first embodiment of the present invention;

[0023] Figure 7 This is a three-dimensional structural diagram of the lens module according to the second embodiment of the present invention;

[0024] Figure 8 This is a cross-sectional view of the lens module according to the second embodiment of the present invention;

[0025] Among them, 10 is the first lens; 11 is the first light-incident surface; 12 is the first light-out surface; 20 is the second lens; 21 is the second light-incident surface; 22 is the second light-out surface; 30 is the connecting wall; 31 is the inner side surface; 41 is the front mold; 42 is the rear mold; 43 is the first slider; 431 is the first insert; 44 is the second slider; 441 is the second insert; 50 is the lens barrel; 51 is the retaining ring; 61 is the light-out side lens; 62 is the middle transmission lens; 70 is the fastening adhesive; 80 is the light-shielding ring; and 90 is the spacer ring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] Figures 1 to 8 This is a structural schematic diagram of the integrated optical lens and lens module of this utility model, wherein, Figure 1 A three-dimensional structural schematic diagram of the integrated optical lens of this utility model is shown. Figure 2 A cross-sectional view of the integrated optical lens of this invention is shown. Figure 3 This diagram shows a structural schematic of the injection molding mold for the integrated optical lens of this invention. Figure 4 This diagram shows a three-dimensional structural schematic of the lens module according to the first embodiment of the present invention. Figure 5 This diagram shows a cross-sectional view of the lens module according to the first embodiment of the present invention. Figure 6 An exploded view of the lens module according to the first embodiment of this utility model is shown. Figure 7 A three-dimensional structural schematic diagram of the lens module according to the second embodiment of this utility model is shown. Figure 8 A cross-sectional view of the lens module according to a second embodiment of the present invention is shown. For ease of description, only the parts relevant to the present invention are shown in the figure.

[0028] It should be noted that if the present invention involves directional indicators (such as up, down, front, back, etc.), the directional indicators are only used to explain the relative positional relationship between the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. If the present invention involves descriptions such as "first", "second", etc., the descriptions such as "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.

[0029] Depend on Figure 1 , Figure 2 and Figure 3 It is understood that the integrated optical lens of this utility model includes at least two lenses spaced apart, and the lens side surface between the outer side of the lens at one end and the outer side of the lens at the other end is set as a convex surface; the connecting structure connecting the adjacent lenses includes two connecting walls 30 evenly distributed along the circumference of the lens, and the inner side surface 31 of the adjacent side of the two connecting walls 30 is a plane; the connection structure between the at least two lenses and the adjacent lenses is an injection-molded integrated structure.

[0030] Since the integrated optical lens is a one-piece structure formed by injection molding, the relative position between at least two lenses remains fixed after injection molding. During installation, the integrated optical lens can be directly installed on the lens barrel. There will be no assembly error between at least two lenses of the integrated optical lens, which can improve optical performance and optical product yield. This solves the problem that assembly errors are easy to occur during the assembly of existing lens modules, which affect optical performance and optical product yield.

[0031] In this invention, the lens comprises two parts: a first lens 10 located on the light-incident side and a second lens 20 located on the light-outceasing side. The side of the first lens 10 away from the second lens 20 is the first light-incident surface 11, and the side of the first lens 10 closer to the second lens 20 is the first light-outceasing surface 12. The side of the second lens 20 closer to the first lens 10 is the second light-incident surface 21, and the side of the second lens 20 closer to the first lens 10 is the second light-outceasing surface 22. The first light-outceasing surface 12 and the second light-incident surface 21 are convex surfaces, and the first light-incident surface 11 and the second light-outceasing surface 22 are concave surfaces. Of course, the first light-incident surface 11 and the second light-outceasing surface 22 can also be set as convex surfaces or flat surfaces as needed.

[0032] For ease of understanding, combined with Figure 3 The molding process of the integrated optical lens and the structure of the injection mold are explained as follows:

[0033] The injection mold includes a rear mold 42 corresponding to the side of the first lens 10, a front mold 41 corresponding to the side of the second lens 20, a first slider 43 corresponding to the upper side between the two connecting walls 30, and a second slider 44 corresponding to the lower side between the two connecting walls 30. A first insert 431 is provided inside the annular groove of the first slider 43, and a second insert 441 is provided inside the annular groove of the second slider 44. After the rear mold 42, the front mold 41, the first slider 43, and the second slider 44 are closed, there is space between the rear mold 42 and the corresponding sides of the first slider 43 and the second slider 44. The cavity portion forming the first lens 10 is formed between the front mold 41 and the corresponding sides of the first slider 43 and the second slider 44. Since the shape of the first insert 431 and the second insert 441 after they are attached is adapted to the shape of the cavity area between the first light-emitting surface 12 of the first lens 10, the second light-incident surface 21 of the second lens 20, and the inner side surface 31 of the two connecting walls 30, the cavity area between the first light-emitting surface 12 of the first lens 10, the second light-incident surface 21 of the second lens 20, and the inner side surface 31 of the two connecting walls 30 can be formed after injection molding.

[0034] Since the inner surfaces 31 of the two connecting walls 30 are flat, it is convenient for the first insert 431 on the first slider 43 to come out upward and the second insert 441 on the second slider 44 to come out downward.

[0035] To facilitate optical path transmission, the inner surface 31 of the connecting wall 30 is inclined, and an acute angle α is provided between the inner surface 31 of the connecting wall 30 and the axes of at least two lenses of the integrated optical lens. Furthermore, the distance between the inner surfaces 31 of the two connecting walls 30 increases sequentially along the optical path transmission direction. Specifically, taking an integrated optical lens with two lenses as an example, such as... Figure 2 As shown, the two lenses are a first lens 10 and a second lens 20. An acute angle α is provided between the inner side 31 of the connecting wall 30 and the axis of the first lens 10 and the second lens 20. The distance between the inner side 31 of the two connecting walls 30 near the second lens 20 is greater than the distance between the inner side 31 of the two connecting walls 30 near the first lens 10. On the one hand, this increases the area of ​​the second light-incident surface 21 of the second lens 20. On the other hand, it can avoid the inner side 31 of the connecting wall 30 from obstructing the light path transmission between the first light-exiting surface 12 of the first lens 10 and the second light-incident surface 21 of the second lens 20.

[0036] In some other embodiments, the lens has at least three pieces, and the two connecting walls 30 of the connecting structure between adjacent lenses are arranged in a one-to-one correspondence, which facilitates processing and manufacturing and can reduce the structural complexity of the injection mold.

[0037] This utility model also relates to a lens module, which includes a lens barrel 50. The port on the light-incident side of the lens barrel 50 corresponding to the light transmission direction is a first port, and the port on the light-outcident side of the lens barrel 50 corresponding to the light transmission direction is a second port. It also includes the aforementioned integrated optical lens fixedly installed at the first port of the lens barrel 50. A fastening adhesive 70 is provided between the integrated optical lens and the lens barrel 50 to enhance the fixed connection performance between the integrated optical lens and the lens barrel 50, and at the same time, it can also block light between the integrated optical lens and the lens barrel 50 to avoid the influence of external light.

[0038] During installation, the integrated optical lens is mounted as a whole on the lens barrel 50. There will be no assembly error between at least two lenses of the integrated optical lens, which can improve optical performance and optical product yield. This solves the problem that assembly errors are easy to occur during the assembly of existing lens modules, which affect optical performance and optical product yield.

[0039] in, Figure 4 , Figure 5 and Figure 6 The specific structure of the lens module of the first embodiment of the present invention is shown. The integrated optical lens is disposed inside the lens barrel 50, and the fastening adhesive 70 is disposed between the first port of the lens barrel 50 and the corresponding side of the integrated optical lens. Since the integrated optical lens is disposed inside the lens barrel 50, the barrel wall of the lens barrel 50 can block the area between two adjacent lenses, so as to avoid the external light from affecting the light path transmission between the lenses.

[0040] Figure 7 and Figure 8 The specific structure of the lens module according to the second embodiment of this utility model is shown. An integrated optical lens is disposed outside the lens barrel 50 and inserted into the first port of the lens barrel 50. A light-shielding ring 80 is provided on the outer periphery of the integrated optical lens. Fastening adhesive 70 is disposed between the first port of the lens barrel 50 and the corresponding side of the integrated optical lens. The light-shielding ring 80 can block the area between two adjacent lenses to prevent external light from affecting the light path transmission between the lenses. The fastening adhesive 70 can enhance the sealing performance between the first port of the lens barrel 50 and the integrated optical lens. At the same time, the fastening adhesive 70 can also enhance the fixed connection performance between the first port of the lens barrel 50 and the integrated optical lens. Typically, the light-shielding ring 80 is formed by light-shielding Mylar surrounding the integrated optical lens. Of course, it can also be directly set as an elastic sleeve, fitted onto the outer periphery of the integrated optical lens. The elastic sleeve is made of rubber.

[0041] Specifically, the integrated optical lens is located at the first port of the lens barrel 50 as the light-incident side lens, and a retaining ring 51 is provided on the inner ring side of the second port of the lens barrel 50. The lens module also includes a light-exit side lens 61 disposed inside the lens barrel 50 and fixed at the second port of the lens barrel 50, such as... Figure 5 and Figure 8 As shown.

[0042] Furthermore, a middle transmission lens 62 is provided between the integrated optical lens and the light-emitting side lens 61. The middle transmission lens 62 can be one, two, or more lenses depending on the design of the optical path.

[0043] When there is one intermediate transmission lens 62, a spacer ring 90 is provided between the intermediate transmission lens 62 and the light-emitting side lens 61 to facilitate the protection of the light-emitting side lens 61 and the intermediate transmission lens 62; when there are at least two intermediate transmission lenses 62, spacer rings 90 are provided between the intermediate transmission lens 62 adjacent to the light-emitting side lens 61 and between adjacent intermediate transmission lenses 62.

[0044] like Figure 7 and Figure 8 As shown, for the lens module of the second embodiment, the integrated optical lens is disposed outside the lens barrel 50. Since the outer peripheral side of the end of the integrated optical lens corresponding to the light-incident side is provided with a chamfered surface, the chamfered surface is usually coated with ink to avoid the influence of external light on the light path transmission of the integrated optical lens, and at the same time, it can also reduce stray light.

[0045] The above description is only some embodiments of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated optical lens, characterized in that, The system includes at least two lenses spaced apart, with the lens side surface located at one end and the lens side surface located at the other end both being convex; a connecting structure connecting adjacent lenses, the connecting structure including two connecting walls evenly distributed along the circumference of the lenses, the inner surfaces of the adjacent sides of the two connecting walls being flat; the at least two lenses and the connecting structure between adjacent lenses are connected as an injection-molded integral structure.

2. The integrated optical lens according to claim 1, characterized in that, The lens has two parts, namely a first lens and a second lens. The side of the first lens away from the second lens is the first light-incident surface, and the side of the first lens closer to the second lens is the first light-outceasing surface. The side of the second lens closer to the first lens is the second light-incident surface, and the side of the second lens closer to the first lens is the second light-outceasing surface. The first light-outceasing surface and the second light-incident surface are convex surfaces, and the first light-incident surface and the second light-outceasing surface are concave surfaces, convex surfaces, or flat surfaces.

3. The integrated optical lens according to claim 1, characterized in that, The lens has at least three pieces, and the two connecting walls of the connecting structure between adjacent lenses are arranged in a one-to-one correspondence.

4. The integrated optical lens according to any one of claims 1 to 3, characterized in that, The inner surface of the connecting wall is inclined, and an acute angle α is provided between the inner surface of the connecting wall and the axis of the lens. The distance between the inner surfaces of the two connecting walls increases sequentially along the optical path transmission direction.

5. A lens module, comprising a lens barrel, wherein a port on the light-incident side of the lens barrel corresponding to the optical path transmission direction is a first port, and a port on the light-outcident side of the lens barrel corresponding to the optical path transmission direction is a second port; characterized in that, It also includes an integrated optical lens as described in any one of claims 1 to 4, which is fixedly installed at the first port of the lens barrel, and a fastening adhesive is provided between the integrated optical lens and the lens barrel.

6. The lens module according to claim 5, characterized in that, The integrated optical lens is disposed inside the lens barrel, and the fastening adhesive is disposed between the first port of the lens barrel and the corresponding side of the integrated optical lens.

7. The lens module according to claim 5, characterized in that, The integrated optical lens is disposed outside the lens barrel and inserted into the first port of the lens barrel. A light-shielding ring is provided on the outer periphery of the integrated optical lens, and the fastening adhesive is disposed between the first port of the lens barrel and the corresponding side of the integrated optical lens.

8. The lens module according to any one of claims 5 to 7, characterized in that, The integrated optical lens is located at the first port of the lens barrel as the light-incident side lens, and a retaining ring is provided at the inner ring side of the second port of the lens barrel; the lens module also includes a light-exit side lens located inside the lens barrel and fixed at the second port of the lens barrel.

9. The lens module according to claim 8, characterized in that, A middle transmission lens is provided between the integrated optical lens and the light-emitting side lens.

10. The lens module according to claim 9, characterized in that, The central transmission lens is provided as one piece, and a spacer ring is provided between the central transmission lens and the light-emitting side lens; or, the central transmission lens is provided as at least two pieces, and spacer rings are provided between the central transmission lens adjacent to the light-emitting side lens and the light-emitting side lens, and between adjacent central transmission lenses.

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