Optical lens and electronic device

Abstract

The application relates to an optical lens and an electronic device. The optical lens comprises: a first lens provided with a first buckling structure; a second lens provided with a second buckling structure, the second buckling structure being matched with the first buckling structure; a glue layer used for gluing the first lens and the second lens; wherein a glue cavity is arranged between the first lens and the second lens; and an exhaust structure arranged on the first lens and / or the second lens, the exhaust structure being communicated with the glue cavity. In the optical lens, the first lens and the second lens are provided with buckling structures, the first buckling structure is matched with the second buckling structure, and the two lenses can be positioned in the gluing process.

Description

Technical Field

[0001] This application relates to the field of optical components, and more particularly to an optical lens and electronic device. Background Technology

[0002] Optical lenses are increasingly used in daily life, deeply integrated into various scenarios such as mobile phone photography and automotive imaging. The stability of a lens during use directly determines the performance and user experience of the terminal device. Especially in the automotive industry, with the development and intelligentization of automotive technology, the safety performance of a vehicle, as a means of transportation, is directly related to the personal safety of its occupants. As a key component for vehicles to perceive the external environment and realize assisted driving and autonomous driving functions, the operational stability of automotive lenses directly affects the accuracy of vehicle environmental recognition and the reliability of signal transmission, thus having a significant impact on the overall vehicle safety performance.

[0003] like Figure 1 and Figure 2 As shown, in optical lenses, cemented lenses can effectively reduce chromatic aberration in the optical system and make the overall structure of the optical lens compact, thus meeting the miniaturization requirements of optical lenses. The cemented lens includes lens 1' and lens 2', which are bonded together by an adhesive layer. During the bonding process, eccentricity can easily occur, causing the axis L1 of lens 1' and the axis L2 of lens 2' to be misaligned, affecting the optical performance of the cemented lens. Utility Model Content

[0004] To address the aforementioned issues, this application provides an optical lens and electronic device that improves the misalignment problem of cemented lenses.

[0005] In a first aspect, this application provides an optical lens, comprising:

[0006] The first lens is provided with a first fastening structure;

[0007] The second lens is provided with a second fastening structure, which is adapted to the first fastening structure;

[0008] An adhesive layer is used to bond the first lens and the second lens; wherein an adhesive cavity is provided between the first lens and the second lens;

[0009] An exhaust structure is disposed on the first lens and / or the second lens, and the exhaust structure is connected to the gel cavity.

[0010] According to some embodiments of this application, the first fastening structure and the second fastening structure are interference fit / transition fit, and the fit clearance D1 is -0.01mm≤D1≤0mm.

[0011] According to some embodiments of this application, the first fastening structure includes:

[0012] The first mating surface is located in the radial direction of the optical lens;

[0013] The second fastening surface is connected to the first fastening surface, and the included angle α between the second fastening surface and the first fastening surface is 80°≤α≤100°.

[0014] According to some embodiments of this application, the included angle α between the second fastening surface and the first fastening surface is 90°.

[0015] According to some embodiments of this application, the ratio of the fastening width W1 of the first fastening surface to the contact width W2 between the second fastening surface and the second lens is 1 < W1 / W2 ≤ 5.

[0016] According to some embodiments of this application, the fastening width W1 of the first fastening surface and the contact width W2 between the second fastening surface and the second lens further satisfy the following:

[0017] 0.06mm≤W1-W2≤0.6mm.

[0018] According to some embodiments of this application, the fastening width W1 of the first fastening surface and the contact width W2 between the second fastening surface and the second lens further satisfy the following:

[0019] 1 < W2 / (W1-W2) ≤ 10.

[0020] According to some embodiments of this application, the fastening width W1 of the first fastening surface is 0.1mm ≤ W1 ≤ 0.8mm;

[0021] The contact width W2 between the second fastening surface and the second lens is 0.08mm≤W2≤0.32mm.

[0022] According to some embodiments of this application, the exhaust structure includes:

[0023] A first exhaust structure is located on the first lens or the second lens, the first exhaust structure is connected to the gel cavity and extends radially along the optical lens;

[0024] A second exhaust structure is located on either the first or second lens, the second exhaust structure being connected to the first exhaust structure and extending along the axial direction of the optical lens.

[0025] According to some embodiments of this application, the exhaust structure includes:

[0026] A third exhaust structure is located on the first lens or the second lens, and the third exhaust structure connects the gel cavity to the outside.

[0027] According to some embodiments of this application, the depth D3 of the exhaust structure is 0.01mm < D3 ≤ 0.06mm.

[0028] According to some embodiments of this application, the ratio of the effective optical aperture DL of the optical lens to the ring width D2 of the cavity is 8.8 ≤ DL / D2 ≤ 13.2.

[0029] According to some embodiments of this application, the first fastening structure includes a first fastening groove, and the second lens portion enters the first fastening groove; or

[0030] The second fastening structure includes a second fastening groove, into which the first lens portion enters.

[0031] Secondly, this application provides an electronic device, comprising:

[0032] The optical lens as described above; and

[0033] At least one of an imaging element and a light source;

[0034] The imaging element is used to convert the optical image or optical information formed by the optical lens into an electrical signal;

[0035] The light source is located on the second side of the optical lens. The light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminated area on the first side of the optical lens.

[0036] In the optical lens of this application, the first lens and the second lens are bonded together by an adhesive layer. The first lens and the second lens are provided with a snap-fit ​​structure to facilitate the positioning of the two lenses during the bonding process, reduce the axial deviation between the two lenses, and improve the optical performance of the optical lens. There is also an adhesive cavity between the first lens and the second lens, and an exhaust structure is provided in communication with the adhesive cavity to prevent the adhesive from overflowing during the bonding process and reduce air bubbles caused by adhesive compression. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without exceeding the scope of protection claimed by this application.

[0038] Figure 1 A schematic diagram of an existing optical lens is shown. Figure 1 ;

[0039] Figure 2 A schematic diagram of an existing optical lens is shown. Figure 2 ;

[0040] Figure 3 A schematic diagram of an optical lens according to an embodiment of this application is shown;

[0041] Figure 4 An exploded view of an optical lens according to an embodiment of this application is shown;

[0042] Figure 5 A schematic diagram of the first exhaust structure and the second exhaust structure according to an embodiment of this application is shown;

[0043] Figure 6 This diagram illustrates the fastening width of the first fastening surface and the contact width between the second fastening surface and the second lens, according to an embodiment of this application.

[0044] Figure 7 A schematic diagram of a first arrangement of the first exhaust structure and the second exhaust structure according to an embodiment of this application is shown;

[0045] Figure 8 A schematic diagram of a second arrangement of the first exhaust structure and the second exhaust structure according to an embodiment of this application is shown;

[0046] Figure 9 A schematic diagram of a third arrangement of the first and second exhaust structures according to embodiments of this application is shown;

[0047] Figure 10 A schematic diagram of a fourth arrangement of the first and second exhaust structures according to embodiments of this application is shown;

[0048] Figure 11 This illustration shows a schematic diagram illustrating the variation in the number of the first and second exhaust structures according to an embodiment of this application.

[0049] Figure 12 This illustration shows a schematic diagram illustrating the variation in the number of the first and second exhaust structures according to an embodiment of this application.

[0050] Figure 13 A schematic diagram of the third exhaust structure according to an embodiment of this application is shown. Figure 1 ;

[0051] Figure 14 A schematic diagram of the third exhaust structure according to an embodiment of this application is shown. Figure 2 ;

[0052] Figure 15 A depth diagram of the exhaust structure according to an embodiment of this application is shown;

[0053] Figure 16A schematic diagram showing the effective optical aperture and the annular width of the cavity in an embodiment of this application is shown;

[0054] Figure 17 A schematic diagram showing the first lens covering the second lens according to an embodiment of this application is shown;

[0055] Figure 18 A schematic diagram showing the second lens covering the first lens according to an embodiment of this application is shown;

[0056] Figure 19 A schematic diagram of one embodiment of the first exhaust structure of this application is shown;

[0057] Figure 20 A schematic diagram of one embodiment of the first exhaust structure of this application is shown;

[0058] Figure 21 A schematic diagram of one embodiment of the second exhaust structure according to an example of this application is shown.

[0059] Among them, 1'-lens one, 2'-lens two;

[0060] 100 - Optical lens, 1 - First lens element, 2 - Second lens element, 3 - Adhesive layer, 41 - First fastening structure, 42 - Second fastening structure, 411 - First fastening surface, 412 - Second fastening surface, 413 - First fastening groove, 421 - Third fastening surface, 422 - Fourth fastening surface, 423 - Second fastening groove, 5 - Adhesive cavity, 51 - Adhesive groove, 6 - Exhaust structure, 61 - First exhaust structure, 62 - Second exhaust structure, 63 - Third exhaust structure. Detailed Implementation

[0061] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0062] It should be noted that in this application, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second or third lens.

[0063] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn strictly to scale.

[0064] It should also be understood that the terms "comprising," "including," and / or "having," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0065] Unless otherwise specified, all terms used in this application (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense, unless expressly so specified herein.

[0066] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0067] The features, principles and other aspects of this application are described in detail below.

[0068] like Figure 3 and Figure 4 As shown, an embodiment of this application provides an optical lens 100, including: a first lens 1, a second lens 2, an adhesive layer 3, and an exhaust structure 6. The first lens 1, the adhesive layer 3, and the second lens 2 are arranged sequentially from the first side to the second side along the optical axis. Exemplarily, the optical lens 100 can be used as, for example, an imaging lens, where the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can be imaged on the image side. The second side of the optical lens 100 is provided with an imaging surface. The optical lens 100 can also be used as, for example, a projection lens or a lidar transmitter lens, where the second side of the optical lens can be the image source side, and the first side can be the imaging side. Light from the image source side can be imaged on the imaging side. The second side of the optical lens 100 is provided with an image source surface.

[0069] The first lens 1 is provided with a first fastening structure 41, for example, the first fastening structure 41 is provided at the bottom end of the first lens 1. The second lens 2 is provided with a second fastening structure 42, for example, the second fastening structure 42 is provided at the top end of the second lens 2. The second fastening structure 42 is adapted to the first fastening structure 41, and the first fastening structure 41 and the second fastening structure 42 abut against each other to achieve fastening. The cooperation between the first fastening structure 41 and the second fastening structure 42 reduces the axial deviation between the first lens 1 and the second lens 2.

[0070] The adhesive layer 3 is located between the first lens 1 and the second lens 2, and is used to bond the first lens 1 and the second lens 2 to form a bonded lens.

[0071] A cavity 5 for receiving adhesive is provided between the first lens 1 and the second lens 2. Exemplarily, the top surface of the second lens 2 has an annular adhesive groove 51. After the first lens 1 and the second lens 2 are engaged, the first lens 1 closes the adhesive groove 51 from above to form the cavity 5. If necessary, the adhesive groove 51 can also be provided on the bottom surface of the first lens 1. During the bonding process of the first lens 1 and the second lens 2, adhesive may overflow between them. The overflowing adhesive enters the cavity 5, preventing adhesive contamination of the fastening structure and reducing internal pressure of the adhesive layer, thus reducing air bubbles generated by adhesive compression.

[0072] like Figure 3 and Figure 5 As shown, the optical lens 100 further includes an exhaust structure 6, which is disposed on the first lens 1 and / or the second lens 2, and connects to the adhesive cavity 5. The exhaust structure 6 connects the adhesive cavity 5 to the outside. When the first lens 1 and the second lens 2 are bonded together, the first fastening structure 41 and the second fastening structure 42 abut against each other, forming a closed adhesive cavity 5 between the first lens 1 and the second lens 2. The exhaust structure 6 connects the adhesive cavity to the outside, and the air in the adhesive cavity is discharged to the outside through the exhaust structure 6, thereby eliminating air bubbles in the adhesive.

[0073] In the optical lens 100 of this application, the first lens 1 and the second lens 2 are glued and fixed together by the adhesive layer 3. The first lens 1 is provided with a first fastening structure 41, and the second lens 2 is provided with a second fastening structure 42. The cooperation between the first fastening structure 41 and the second fastening structure 42 can quickly and accurately position the lenses during the bonding process, effectively avoiding the eccentricity deviation of the two lenses, thereby improving the overall optical performance of the optical lens 100.

[0074] In some embodiments, the first snap-fit ​​structure 41 and the second snap-fit ​​structure 42 are interference fits or transition fits, with a fit clearance D1 of -0.01mm ≤ D1 ≤ 0mm, to ensure a stable clamping force between the first lens 1 and the second lens 2, which helps reduce axial deviation between them. In particular, an interference fit can further increase the clamping force between the cemented lenses and reduce axial deviation. For example, the fit clearance D1 between the first snap-fit ​​structure 41 and the second snap-fit ​​structure 42 can be -0.01mm, -0.005mm, or 0mm. When D1 is -0.01mm ≤ D1 ≤ 0, the misalignment between the axis of the first lens 1 and the axis of the second lens 2 is < 3μm. In cemented lenses without a snap-fit ​​structure, the axial deviation between the two lenses can reach more than 10μm.

[0075] If the fit gap D1 between the first snap-fit ​​structure 41 and the second snap-fit ​​structure 42 is too small, it will increase the assembly resistance of the first lens 1 and the second lens 2, which may easily cause lens damage. If the fit gap D1 between the first snap-fit ​​structure 41 and the second snap-fit ​​structure 42 is too large, it will reduce the positioning effect between the first lens 1 and the second lens 2, resulting in a large axial misalignment.

[0076] like Figure 4 As shown, in some embodiments, the first fastening structure 41 includes a first fastening surface 411 and a second fastening surface 412. The first fastening surface 411 is located in the radial direction of the optical lens 100, and may be slightly tilted relative to the radial direction of the optical lens 100 as needed. The second fastening surface 412 connects to the first fastening surface 411, and the included angle α between the second fastening surface 412 and the first fastening surface 411 is 80°≤α≤100°. For example, α is 80°, 85°, 90°, 95°, or 100°. If the included angle α between the second fastening surface 412 and the first fastening surface 411 is too large, it is not conducive to the precise positioning of the first lens 1 and the second lens 2. If the included angle α between the second fastening surface 412 and the first fastening surface 411 is too small, it is not convenient to assemble the first lens 1 and the second lens 2.

[0077] The second fastening structure 42 includes a third fastening surface 421 and a fourth fastening surface 422, with the fourth fastening surface 422 connected to the third fastening surface 421. The third fastening surface 421 is parallel to and abuts against the first fastening surface 411. The fourth fastening surface 422 is parallel to and abuts against the second fastening surface 412, thereby positioning the first lens 1 and the second lens 2.

[0078] In some embodiments, the included angle α between the second fastening surface 412 and the first fastening surface 411 is 90°. The first fastening surface 411 is parallel to the radial direction of the optical lens 100, and the second fastening surface 412 is parallel to the axial direction of the optical lens 100, which facilitates the fabrication of the first fastening structure 41 and the second fastening structure 42.

[0079] like Figure 6 As shown, in some embodiments, the ratio of the engagement width W1 of the first engagement surface 411 to the contact width W2 of the second engagement surface 412 and the second lens 2 is 1 < W1 / W2 ≤ 5, to ensure the engagement strength and clamping force between the first lens 1 and the second lens 2. For example, the value of W1 / W2 is 1.2, 2.4, 3, 4, or 5. The engagement width W1 of the first engagement surface 411 is the distance between the edge of the effective light-transmitting area of ​​the optical lens and the edge of the second lens 2.

[0080] In some embodiments, to further ensure a stable clamping force between the first lens 1 and the second lens 2, the fastening width W1 of the first fastening surface 411 and the contact width W2 between the second fastening surface 412 and the second lens 2 also satisfy the following:

[0081] 0.06mm≤W1-W2≤0.6mm.

[0082] In some embodiments, to prevent stress deformation caused by local stress concentration in the first lens 1 and the second lens 2, the fastening width W1 of the first fastening surface 411 and the contact width W2 between the second fastening surface 412 and the second lens 2 also satisfy the following:

[0083] 1 < W2 / (W1-W2) ≤ 10.

[0084] In some embodiments, the fastening width W1 of the first fastening surface 411 is 0.1mm≤W1≤0.8mm, so that a stable clamping force can be guaranteed between the first lens 1 and the second lens 2.

[0085] The contact width W2 between the second fastening surface 412 and the second lens 2 is 0.08mm ≤ W2 ≤ 0.32mm. The contact width W2 between the second fastening surface 412 and the second lens 2 is within the above range, ensuring sufficient axial support between the first lens 1 and the second lens 2 to resist axial movement between them. Simultaneously, it forms an effective sealing surface, preventing dust and rainwater from seeping in from the vehicle environment. Furthermore, it avoids excessively large axial contact areas between the first lens 1 and the second lens 2, preventing axial pressure on the two lenses under high and low temperature conditions and avoiding damage to the two lenses.

[0086] In some embodiments, the venting structure 6 includes a first venting structure 61 and a second venting structure 62. The first venting structure 61 is located on the first lens 1 or the second lens 2, communicates with the gel cavity 5, and extends radially along the optical lens 100. The second venting structure 62 is located on the first lens 1 or the second lens 2, communicates with the first venting structure 61, and extends axially along the optical lens 100.

[0087] like Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, Figure 7 The first exhaust structure 61 is located on the third fastening surface 421 of the second fastening structure 42, and the second exhaust structure 62 is located on the fourth fastening surface 422 of the second fastening structure 42. Figure 8 The first exhaust structure 61 is located on the first fastening surface 411 of the first fastening structure 41, and the second exhaust structure 62 is located on the second fastening surface 412 of the first fastening structure 41. Figure 9The first exhaust structure 61 is located on the third fastening surface 421 of the second fastening structure 42, and the second exhaust structure 62 is located on the second fastening surface 412 of the first fastening structure 41. Figure 10 The first exhaust structure 61 is located on the first fastening surface 411 of the first fastening structure 41, and the second exhaust structure 62 is located on the fourth fastening surface 422 of the second fastening structure 42. The positions of the first exhaust structure 61 and the second exhaust structure 62 are set according to requirements. It should be noted that the adhesive layer 3 is omitted in some of the attached drawings.

[0088] In one possible implementation, the number of the first exhaust structure 61 and the second exhaust structure 62 is set according to requirements.

[0089] For example, Figure 5 The number of the first exhaust structure 61 and the second exhaust structure 62 are both four. Figure 11 In this configuration, there are four first exhaust structures 61 and two second exhaust structures 62. Figure 12 There are two of each of the first exhaust structure 61 and the second exhaust structure 62. For example, the first exhaust structure 61 and the second exhaust structure 62 are evenly distributed around the axis of the optical lens 100.

[0090] like Figure 13 and Figure 14 As shown, in some embodiments, the venting structure 6 includes a third venting structure 63, which is located on the first lens 1 or the second lens 2, and communicates with the adhesive cavity 5 and the outside. Exemplarily, the third venting structure 63 is located on the side wall of the second lens 2, extending obliquely downward from the adhesive groove 51. After the first lens 1 and the second lens 2 are engaged, the third venting structure 63 can communicate with the outside. If necessary, the third venting structure 63 can also be disposed on the first lens 1.

[0091] like Figure 15 As shown, in some embodiments, the depth D3 of the venting structure 6 is 0.01mm < D3 ≤ 0.06mm. For example, the first venting structure 61 and the second venting structure 62 have the same depth, both being D3. Exemplarily, the value of D3 is 0.02mm, 0.03mm, or 0.06mm. Setting the depth D3 of the venting structure 6 to 0.01mm < D3 ≤ 0.06mm satisfies the requirement that glue bubbles can be smoothly discharged from the optical lens 100 without affecting the optical performance of the optical lens 100.

[0092] like Figure 16As shown, in some embodiments, the ratio of the effective optical aperture DL of the optical lens 100 to the ring width D2 of the cavity 5 is 8.8≤DL / D2≤13.2, which can effectively prevent stress from being directly transmitted to the light-transmitting area of ​​the optical lens 100, prevent deformation of the effective optical area under vehicle environment, and thus avoid adverse effects such as aberration and field distortion, and ensure image clarity.

[0093] like Figure 17 As shown, in some embodiments, the first fastening structure 41 includes a first fastening groove 413, which is located at the bottom end of the first lens 1. The first fastening surface 411 is the bottom of the first fastening groove 413, and the second fastening surface 412 is the wall of the first fastening groove 413. The top end of the second lens 2 enters the first fastening groove 413, and the second fastening structure 42 fastens with the first fastening structure 41, so that the first lens 1 covers the second lens 2.

[0094] like Figure 18 As shown, in some embodiments, the second fastening structure 42 includes a second fastening groove 423 located at the top of the second lens 2. The third fastening surface 421 is the bottom of the second fastening groove 423, and the fourth fastening surface 422 is the wall of the second fastening groove 423. The bottom end of the first lens 1 enters the second fastening groove 423, and the first fastening structure 41 and the second fastening structure 42 fasten together, with the second lens 2 covering the first lens 1.

[0095] like Figure 19 and 20 As shown, this application does not limit the shape of the first exhaust structure 61. Exemplarily, depending on requirements, the first exhaust structure 61 can be configured as follows: Figure 18 The beveled groove shown can also be set in Figure 19 The circular groove shown.

[0096] like Figure 5 and Figure 21 As shown, this application does not limit the shape of the second exhaust structure 62. Exemplarily, depending on requirements, the second exhaust structure 62 can be configured as follows: Figure 5 The arc-shaped groove shown can also be set as Figure 21 The straight-edge groove shown.

[0097] Embodiments of this application also provide an electronic device, which includes the optical lens 100 described in the exemplary embodiments above and an imaging element for converting the optical image formed by the optical lens 100 into an electrical signal. The imaging element is disposed on a second side of the optical lens 100, for example, on an imaging surface, and may be, for example, a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). Light from the first side is imaged on the second side after passing through the optical lens.

[0098] This application also provides an electronic device including the optical lens 100 and a light source as described in the exemplary embodiments above, with the light source located on a second side of the optical lens. Light emitted from the light source is projected onto a first side of the optical lens after passing through it, forming an image or illuminating an area on the first side.

[0099] This application also provides an electronic device, including a first device and a second device. The first device may be, for example, a lidar transmitter, and the second device may be, for example, a lidar receiver. The first device may include an optical lens and a light source as described in the exemplary embodiments above. The light source is located on the second side of the optical lens, and the light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, forming an image or illuminating an area on the first side. The second device may include an optical lens as described in the exemplary embodiments above and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The imaging element is disposed on the second side of the optical lens (e.g., on the imaging surface), and the imaging element may be, for example, a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The light from the first side is imaged on the second side after passing through the optical lens.

[0100] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the technical solutions and core ideas of this application. Therefore, any changes or modifications made by those skilled in the art based on the ideas of this application, and on the specific implementation methods and application scope of this application, are all within the scope of protection of this application. In summary, the content of this specification should not be construed as a limitation of this application.

Claims

1. An optical lens, characterized in that, include: The first lens is provided with a first fastening structure; The second lens is provided with a second fastening structure, which is adapted to the first fastening structure; An adhesive layer is used to bond the first lens and the second lens; wherein an adhesive cavity is provided between the first lens and the second lens; An exhaust structure is disposed on the first lens and / or the second lens, and the exhaust structure is connected to the gel cavity.

2. The optical lens according to claim 1, characterized in that, The first and second fastening structures are interference fit / transition fit, and the fit clearance D1 is -0.01mm≤D1≤0mm.

3. The optical lens according to claim 1, characterized in that, The first fastening structure includes: The first mating surface is located in the radial direction of the optical lens; The second fastening surface is connected to the first fastening surface, and the included angle α between the second fastening surface and the first fastening surface is 80°≤α≤100°.

4. The optical lens according to claim 3, characterized in that, The included angle α between the second fastening surface and the first fastening surface is 90°.

5. The optical lens according to claim 3, characterized in that, The ratio of the fastening width W1 of the first fastening surface to the contact width W2 between the second fastening surface and the second lens is 1 < W1 / W2 ≤ 5.

6. The optical lens according to claim 5, characterized in that, The fastening width W1 of the first fastening surface and the contact width W2 between the second fastening surface and the second lens also satisfy: 0.06mm≤W1-W2≤0.6mm.

7. The optical lens according to claim 5, characterized in that, The fastening width W1 of the first fastening surface and the contact width W2 between the second fastening surface and the second lens also satisfy: 1 < W2 / (W1-W2) ≤ 10.

8. The optical lens according to claim 5, characterized in that, The engagement width W1 of the first engagement surface is 0.1mm ≤ W1 ≤ 0.8mm; The contact width W2 between the second fastening surface and the second lens is 0.08mm≤W2≤0.32mm.

9. The optical lens according to claim 1, characterized in that, The exhaust structure includes: A first exhaust structure is located on the first lens or the second lens, the first exhaust structure is connected to the gel cavity and extends radially along the optical lens; A second exhaust structure is located on either the first or second lens, the second exhaust structure being connected to the first exhaust structure and extending along the axial direction of the optical lens.

10. The optical lens according to claim 1, characterized in that, The exhaust structure includes: A third exhaust structure is located on the first lens or the second lens, and the third exhaust structure connects the gel cavity to the outside.

11. The optical lens according to claim 1, characterized in that, The depth D3 of the exhaust structure is 0.01 mm < D3 ≤ 0.06 mm.

12. The optical lens according to claim 1, characterized in that, The ratio of the effective optical aperture DL of the optical lens to the annular width D2 of the cavity is 8.8 ≤ DL / D2 ≤ 13.

2.

13. The optical lens according to claim 1, characterized in that, The first fastening structure includes a first fastening groove, and the second lens portion enters the first fastening groove; or The second fastening structure includes a second fastening groove, into which the first lens portion enters.

14. An electronic device, characterized in that, include: Optical lens according to any one of claims 1 to 13; as well as At least one of an imaging element and a light source; The imaging element is used to convert the optical image or optical information formed by the optical lens into an electrical signal; The light source is located on the second side of the optical lens. The light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminated area on the first side of the optical lens.

Images