Optical lens

Abstract

The utility model provides an optical lens. The optical lens includes: a lens barrel; the lens is arranged in the lens barrel, the lens is provided with a bending structure, the bending structure is located on the peripheral side of the lens, the bending structure comprises a first section, a second section and a third section which are sequentially connected in the direction away from the optical axis, every two adjacent sections of the first section, the second section and the third section are in angular connection, and a groove is formed between the first section and the second section; the groove is located on the object side face of the bending structure, and the lens barrel is provided with a boss matched with the groove. According to the utility model, the problem that the overall length of an optical lens in the prior art is difficult to compress is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical imaging equipment, in particular to an optical lens. Background Art

[0002] With the advancement of technology, optical lenses have become a key component of smart electronic devices. Traditional optical lenses usually consist of a lens barrel and optical elements arranged in the lens barrel. How to design a structure that is conducive to reducing the length of the optical lens body without changing the optical design to meet the application of ultra-thin devices? This means that it is necessary to reconsider the coordination between the lens and the lens barrel and the arrangement of the optical elements in the lens barrel, which poses new challenges to designers.

[0003] That is to say, the optical lens in the prior art has the problem of difficulty in compressing the overall length. Utility Model Content

[0004] The main purpose of the utility model is to provide an optical lens to solve the problem that the optical lens in the prior art is difficult to compress its overall length.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an optical lens, comprising: a lens barrel; a lens, the lens is arranged in the lens barrel, the lens has a bending structure, the bending structure is located on the outer peripheral side of the lens, the bending structure includes a first section, a second section and a third section connected in sequence along a direction away from the optical axis, adjacent two sections of the first section, the second section and the third section are connected at an angle, and a groove is formed between the first section and the second section, the groove is located on the object side of the bending structure, and the lens barrel has a boss matched with the groove.

[0006] Furthermore, the first section and the third section are both perpendicular to the optical axis of the lens, and the second section is connected to the first section at an obtuse angle.

[0007] Furthermore, the length of the second segment is greater than the length of the first segment, and the length of the second segment is greater than the length of the third segment.

[0008] Furthermore, the thickness I of the second section and the thickness C of the first section satisfy: 0<I / C<1.5.

[0009] Furthermore, an axial distance G between the image side surface of the third segment and the image side surface of the first segment and a thickness C of the first segment satisfy: 1<G / C<5.

[0010] Furthermore, the lens includes a central effective portion and an edge structure portion, the edge structure portion is located on the outer peripheral side of the central effective portion, the edge structure portion is composed of an abutment structure and a bending structure along a direction away from the optical axis, and the first section is connected to the abutment structure.

[0011] Furthermore, the object side surface of the first section is arranged close to the image side of the optical lens relative to the object side surface of the abutment structure, and the side surface of the boss facing the optical axis abuts against the abutment structure, and the axial length A of the boss and the abutment structure is greater than or equal to 0.1mm and less than or equal to 0.3mm.

[0012] Furthermore, the optical lens also includes a glue structure, the outer peripheral surface of the lens is bonded to the lens barrel, a bonding area is formed between the outer peripheral area of ​​the image side of the lens and the lens barrel, and the glue structure is arranged in the bonding area; or the outer peripheral surface of the lens and the lens barrel are spaced apart to form a bonding space, and at least part of the glue structure is filled in the bonding space.

[0013] Further, when the outer peripheral surface of the lens is spaced apart from the lens barrel, a radial spacing F between the outer peripheral surface of the lens and the lens barrel is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.

[0014] Furthermore, the axial distance B between the boss and the first section is greater than 0 mm and less than or equal to 0.03 mm; and / or the minimum distance D between the boss and the second section is greater than 0 mm and less than or equal to 0.03 mm; and / or the axial distance E between the object side surface of the third section and the lens barrel is greater than 0 mm and less than or equal to 0.05 mm.

[0015] According to the technical solution of the utility model, the optical lens comprises a lens barrel and a lens, wherein the lens is arranged in the lens barrel, the lens has a bending structure, the bending structure is located on the outer peripheral side of the lens, the bending structure comprises a first section, a second section and a third section connected in sequence along a direction away from the optical axis, adjacent two sections among the first section, the second section and the third section are connected at an angle, a groove is formed between the first section and the second section, the groove is located on the object side surface of the bending structure, and the lens barrel has a boss matched with the groove.

[0016] By arranging the periphery of the lens to have a bending structure, and planning the bending structure to include a first section, a second section and a third section connected at an angle in sequence in a direction away from the optical axis, and further arranging the first section and the second section to be connected at an angle to form a groove, the boss of the lens barrel can extend into the groove to form a limited fit. On the one hand, it is beneficial to increase the assembly strength of the lens and the lens barrel, avoid the risk of the lens shaking or misalignment during the use of the optical lens, ensure the stability of the assembly, and further ensure the reliability; on the other hand, the object side surface of the bending structure has a groove that cooperates with the boss of the lens barrel. Such an arrangement makes it possible to adjust the matching position of the periphery of the lens and the lens barrel to be closer to the object side without changing the position of the lens on the optical axis, thereby facilitating the compression of the overall length of the optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram showing the cooperation between the lens and the lens barrel of an optical lens of an optional embodiment of the utility model is shown;

[0019] Figure 2 A schematic diagram showing the cooperation between the lens and the lens barrel of an optical lens of another optional embodiment of the utility model is shown;

[0020] Figure 3 Shows Figure 2 The enlarged view of the M in the middle;

[0021] Figure 4 A dimensioning diagram of an optical lens of another optional embodiment of the utility model is shown.

[0022] The above drawings include the following reference numerals:

[0023] 10. Lens barrel; 11. Boss; 20. Lens; 21. Central effective portion; 22. Edge structure portion; 221. Abutment structure; 222. Bending structure; 2221. First section; 2222. Second section; 2223. Third section; 30. Glue structure; 40. Optical axis. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0026] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0027] In order to solve the problem that the optical lens in the prior art has difficulty in compressing the overall length, the utility model provides an optical lens.

[0028] like Figures 1 to 4As shown, the optical lens includes a lens barrel 10 and a lens 20, the lens 20 is arranged in the lens barrel 10, the lens 20 has a bending structure 222, the bending structure 222 is located on the outer peripheral side of the lens 20, the bending structure 222 includes a first section 2221, a second section 2222 and a third section 2223 connected in sequence along a direction away from the optical axis 40, the adjacent two sections of the first section 2221, the second section 2222 and the third section 2223 are connected at an angle, and a groove is formed between the first section 2221 and the second section 2222, the groove is located on the object side of the bending structure 222, and the lens barrel 10 has a boss 11 that cooperates with the groove.

[0029] By arranging the periphery of the lens 20 with a bending structure 222, and planning the bending structure 222 to include a first section 2221, a second section 2222 and a third section 2223 that are connected at an angle in sequence along a direction away from the optical axis 40, and further arranging the first section 2221 and the second section 2222 to be connected at an angle to form a groove therebetween, so that the boss 11 of the lens barrel 10 can extend into the groove to form a limited fit, on the one hand, it is beneficial to increase the assembly strength of the lens 20 and the lens barrel 10, avoid the risk of the lens 20 shaking or misalignment during the use of the optical lens, ensure the assembly stability, and further ensure the reliability; on the other hand, the object side surface of the bending structure 222 has a groove that cooperates with the boss 11 of the lens barrel 10. In this way, when the position of the lens 20 on the optical axis 40 does not change, the matching position of the periphery of the lens 20 and the lens barrel 10 is adjusted to be closer to the object side, thereby facilitating the compression of the overall length of the optical lens.

[0030] Specifically, the lens 20 is composed of a central effective portion 21 and an edge structure portion 22. The central effective portion 21 is used for imaging light to pass through. The edge structure portion 22 is located on the outer peripheral side of the central effective portion 21 and is connected to the outer peripheral edge of the central effective portion 21. The edge structure is annular, and the annular edge structure is used to abut against the adjacent lens barrel 10 or lens 20 or spacer. The edge structure portion 22 is composed of an abutment structure 221 and a bending structure 222 in a direction away from the optical axis 40, and the first section 2221 is connected to the abutment structure 221. Specifically, the abutment structure 221 is connected to the central effective portion 21, and the first section 2221 of the bending structure 222 is connected to the side of the abutment structure 221 away from the optical axis 40, and the abutment structure 221 is perpendicular to the optical axis 40.

[0031] It should be noted that the end of the second section 2222 away from the first section 2221 extends toward the object side, so that a groove is formed between the first section 2221, the second section 2222 and the abutting structure 221. Figures 1 to 4In the figure, the left side is the object side of the optical lens, and the right side is the image side of the optical lens. The optical axis of the lens barrel 10 coincides with the optical axis of the lens 20, so the optical axis 40 mentioned above and below can be the optical axis of the lens barrel 10 or the optical axis of the lens 20.

[0032] like Figures 1 to 4 As shown, the first section 2221 and the third section 2223 are both perpendicular to the optical axis 40 of the lens 20, and the second section 2222 is connected to the first section 2221 at an obtuse angle. By reasonably setting the angles of each section, it is helpful to ensure the reliability of the bending structure 222, and setting the second section 2222 to be connected to the first section 2221 at an obtuse angle is helpful to ensure the structural rationality of the groove and to increase the matching degree between the boss 11 and the groove.

[0033] In the specific embodiments of the present application, Figures 1 to 4 As shown, the length of the second section 2222 is greater than the length of the first section 2221, and the length of the second section 2222 is greater than the length of the third section 2223. This arrangement is conducive to ensuring the axial depth of the groove and the matching strength of the lens 20 and the lens barrel 10. Specifically, since the first section 2221 and the third section 2223 are both perpendicular to the optical axis 40, the lengths of the two are actually radial lengths; the length of the second section 2222 is its extended length inclined to the optical axis 40.

[0034] like Figure 4 As shown, the thickness I of the second section 2222 and the thickness C of the first section 2221 satisfy: 0<I / C<1.5. Such a setting is conducive to ensuring the rationality of the thickness of the first section 2221 and the second section 2222, while ensuring the structural stability of the two, and is conducive to increasing the structural strength of the bending structure 222. At the same time, it is ensured that the bending structure 222 will not be deformed when it cooperates with the boss 11 of the lens barrel 10, ensuring the assembly accuracy.

[0035] Specifically, the thickness I of the second section 2222 is greater than or equal to 0.2 mm and less than or equal to 2 mm. The thickness C of the first section 2221 is greater than or equal to 0.2 mm and less than or equal to 3 mm.

[0036] like Figure 4 As shown, the axial distance G between the image side surface of the third section 2223 and the image side surface of the first section 2221 and the thickness C of the first section 2221 satisfy: 1<G / C<5. This arrangement is conducive to ensuring the structural rationality and reliability of the bending structure 222, and is conducive to ensuring its stable cooperation with the lens barrel 10.

[0037] Specifically, an axial distance G between the image side surface of the third segment 2223 and the image side surface of the first segment 2221 is greater than or equal to 0.2 mm and less than or equal to 3 mm.

[0038] like Figures 1 to 4As shown, the object side surface of the first section 2221 is arranged close to the image side of the optical lens relative to the object side surface of the abutting structure 221, so as to leave a fitting position for the boss 11, the axial thickness of the first section 2221 is less than the axial thickness of the abutting structure 221, the side surface of the boss 11 facing the optical axis 40 abuts against the outer peripheral surface of the abutting structure 221, and the axial length A of the boss 11 and the abutting structure 221 is greater than or equal to 0.1mm and less than or equal to 0.3mm. The boss 11 abuts against the abutting structure 221, and the interaction force between the two is in the radial direction. Such a setting further ensures the assembly stability of the lens 20 and the lens barrel 10, which is conducive to preventing the lens 20 from axial displacement.

[0039] Specifically, the axial distance B between the boss 11 and the first section 2221 is greater than 0mm and less than or equal to 0.03mm; the minimum distance D between the boss 11 and the second section 2222 is greater than 0mm and less than or equal to 0.03mm; the axial distance E between the object side of the third section 2223 and the lens barrel 10 is greater than 0mm and less than or equal to 0.05mm. In a specific embodiment of the present application, B=0.02mm, D=0.02mm, E=0.02mm. This arrangement makes the boss 11 structure and the first section 2221, the boss 11 structure and the second section 2222, and the object side of the third section 2223 and the lens barrel 10 are spaced apart, and appropriate gaps are reserved, which is conducive to good performance in subsequent use or reliability verification, and is conducive to avoiding the risk of deformation of the matching position between the lens 20 and the lens barrel 10.

[0040] Specifically, the optical lens further includes a glue structure 30 , which is used to achieve gluing between the lens 20 and the lens barrel 10 , and the glue spot is located between the edge area of ​​the image side of the lens 20 and the lens barrel 10 .

[0041] exist Figure 1 In a specific embodiment shown, the outer peripheral surface of the lens 20 is fitted with the lens barrel 10. Specifically, the side surface of the third section 2223 away from the second section 2222 is in contact with the lens barrel 10. A bonding area is formed between the outer peripheral area of ​​the image side of the lens 20 and the lens barrel 10. The glue structure 30 is arranged in the bonding area. This arrangement is conducive to reducing small-scale deformation, increasing the bonding range, and ensuring reliability.

[0042] exist Figures 2 to 4 In another specific embodiment shown, the outer peripheral surface of the lens 20 is spaced apart from the lens barrel 10 to form a bonding space, and there is a radial gap between the side surface of the third section 2223 away from the second section 2222 and the lens barrel 10, at least a portion of the glue structure 30 is filled in the bonding space, and another portion of the glue structure 30 is located between the outer peripheral area of ​​the image side surface of the lens 20 and the lens barrel 10. This arrangement is conducive to reducing small-scale deformation, increasing the bonding range, and ensuring reliability.

[0043] Specifically, when the outer circumference of the lens 20 is spaced from the lens barrel 10, the radial spacing F between the outer circumference of the lens 20 and the lens barrel 10 is greater than or equal to 0.05 mm and less than or equal to 0.2 mm. By properly restricting the radial spacing F, it is helpful to ensure the size of the bonding space and the bonding reliability of the lens 20 and the lens barrel 10.

[0044] In addition, the radial distance H between the image side surface of the first section 2221 and the image side surface of the second section 2222 and the inner wall surface of the lens barrel 10 is greater than or equal to 0.25 mm and less than or equal to 2 mm. This arrangement is conducive to ensuring the size of the groove of the bending structure 222 and ensuring the assembly strength of the bending structure 222 and the lens barrel 10.

[0045] In addition, in the present application, the length of the adhesive structure 30 on the optical axis 40 is 0.28 mm. The total axial length of the optical lens is 3.62 mm, which is reduced by more than 0.24 mm compared with the total length of the existing optical lens of the same optical system, thus shortening the overall length of the optical lens.

[0046] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An optical lens, characterized in that: include: Lens tube (10); A lens (20), wherein the lens (20) is arranged in the lens barrel (10), the lens (20) has a bending structure (222), the bending structure (222) is located on the outer peripheral side of the lens (20), the bending structure (222) comprises a first section (2221), a second section (2222) and a third section (2223) connected in sequence along a direction away from the optical axis, adjacent two sections of the first section (2221), the second section (2222) and the third section (2223) are connected at an angle, and a groove is formed between the first section (2221) and the second section (2222), the groove is located on the object side of the bending structure (222), and the lens barrel (10) has a boss (11) matched with the groove.

2. The optical lens according to claim 1, characterized in that: The first section (2221) and the third section (2223) are both perpendicular to the optical axis of the lens (20), and the second section (2222) is connected to the first section (2221) at an obtuse angle.

3. The optical lens according to claim 1, characterized in that: The length of the second section (2222) is greater than the length of the first section (2221), and the length of the second section (2222) is greater than the length of the third section (2223).

4. The optical lens according to claim 1, characterized in that: The thickness I of the second section (2222) and the thickness C of the first section (2221) satisfy the following relationship: 0<I / C<1.

5.

5. The optical lens according to claim 1, characterized in that: The axial distance G between the image side surface of the third segment (2223) and the image side surface of the first segment (2221) and the thickness C of the first segment (2221) satisfy the following relationship: 1<G / C<5.

6. The optical lens according to claim 1, characterized in that: The lens (20) comprises a central effective portion (21) and an edge structure portion (22), wherein the edge structure portion (22) is located on the outer peripheral side of the central effective portion (21), and the edge structure portion (22) is composed of a contact structure (221) and the bending structure (222) along a direction away from the optical axis, and the first section (2221) is connected to the contact structure (221).

7. The optical lens according to claim 6, characterized in that: The object side surface of the first section (2221) is arranged close to the image side of the optical lens relative to the object side surface of the abutment structure (221); a side surface of the boss (11) facing the optical axis abuts against the abutment structure (221); and an axial length A of the boss (11) and the abutment structure (221) is greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

8. The optical lens according to any one of claims 1 to 7, characterized in that: The optical lens further comprises a glue structure (30), The outer peripheral surface of the lens (20) is bonded to the lens barrel (10), a bonding area is formed between the outer peripheral area of ​​the image side surface of the lens (20) and the lens barrel (10), and the glue structure (30) is arranged at the bonding area; or The outer peripheral surface of the lens (20) is spaced apart from the lens barrel (10) to form a bonding space, and at least a portion of the bonding structure (30) is filled in the bonding space.

9. The optical lens according to claim 8, characterized in that: When the outer peripheral surface of the lens (20) is spaced apart from the lens barrel (10), a radial spacing F between the outer peripheral surface of the lens (20) and the lens barrel (10) is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.

10. The optical lens according to any one of claims 1 to 7, characterized in that: The axial distance B between the boss (11) and the first section (2221) is greater than 0 mm and less than or equal to 0.03 mm; and / or The minimum distance D between the boss (11) and the second section (2222) is greater than 0 mm and less than or equal to 0.03 mm; and / or An axial distance E between the object side surface of the third section (2223) and the lens barrel (10) is greater than 0 mm and less than or equal to 0.05 mm.

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