Lenses, camera modules and electronic devices

Abstract

This disclosure relates to a lens, a camera module, and an electronic device. The lens includes a lens barrel; a lens group, the lens group including a single first lens and a sub-lens group, the sub-lens group including multiple lenses, the multiple lenses and the first lens being arranged sequentially along the incident direction of light; wherein, the first lens includes a light incident surface near a first end of the lens barrel, and at least a portion of the first lens protrudes beyond the end face of the first end of the lens barrel, the light incident surface being located outside the lens barrel.

Description

Technical Field

[0001] This disclosure relates to the field of terminal technology, and in particular to a lens, camera module and electronic device. Background Technology

[0002] With the rapid development of the electronics industry, users have higher expectations and requirements for the configuration and appearance of electronic devices. Among these, the demand for higher screen-to-body ratios is particularly evident. How to balance front-facing camera functionality with maximizing screen-to-body ratio has become a major technical challenge that designers urgently need to solve. Summary of the Invention

[0003] This disclosure provides a lens, a camera module, and an electronic device, which can increase the screen-to-body ratio of the electronic device equipped with the lens by reducing the end size of the lens, thereby overcoming the shortcomings of related technologies.

[0004] According to a first aspect of the present disclosure, a lens is provided, comprising:

[0005] Lens tube;

[0006] A lens group, comprising a single first lens and a sub-lens group, wherein the sub-lens group comprises multiple lenses, and the multiple lenses and the first lens are arranged sequentially along the incident direction of light.

[0007] The first lens includes a light incident surface near the first end of the lens barrel, and at least a portion of the first lens protrudes from the end face of the first end of the lens barrel, wherein the light incident surface is located outside the lens barrel.

[0008] Optionally, the lens barrel includes multiple stepped portions located inside the lens barrel, each stepped portion cooperating with a lens included in the sub-lens group.

[0009] Optionally, the first lens is fixedly connected to a lens in the sub-lens group that is positioned towards the first lens, and the lens in the sub-lens group that is connected to the first lens is limited by the lens barrel.

[0010] Optionally, the lens in the sub-lens group facing the first lens includes a recessed portion, and the first lens is fastened to the recessed portion.

[0011] Optionally, the first lens includes a support portion and a protrusion extending outward from the support portion. The protrusion extends partially beyond the end face of the first end of the lens barrel, and the support portion cooperates with the lens barrel to limit the position of the first lens.

[0012] Optionally, it also includes multiple isolation elements, which are provided between the first lens and the sub-lens group, and between adjacent lenses within the sub-lens group.

[0013] Optionally, along the incident direction of light, the circumferential dimensions of the lenses included in the lens group increase sequentially.

[0014] Optionally, the lens further includes a lens hood, the lens hood comprising:

[0015] A connecting part, which is connected to the lens barrel;

[0016] A first light-shielding part is connected to the connecting part, and the first light-shielding part at least covers the side of the first lens that protrudes from the lens barrel portion.

[0017] Optionally, the light shield further includes:

[0018] The second light-shielding part is connected to the first light-shielding part, and the second light-shielding part covers a portion of the surface of the first lens that is perpendicular to the incident light.

[0019] Optionally, at least one of the multiple lenses included in the first lens and the sub-lens group has an Abbe number of less than 20.

[0020] Optionally, the refractive index of any one of the multiple lenses included in the first lens and the sub-lens group is greater than or equal to 1.52 and less than or equal to 1.68.

[0021] Optionally, the sub-lens group includes a second lens, a third lens, a fourth lens, and a fifth lens, and the spacing between the second lens, the third lens, the fourth lens, and the fifth lens and the first lens gradually increases;

[0022] The first lens has positive optical power, and the object side and the image side are both convex.

[0023] The second lens has negative optical power, and the object side is concave and the image side is concave.

[0024] The third lens has negative optical power, and the object side is concave and the image side is concave.

[0025] The fourth lens has positive optical power, and the object side is convex and the image side is convex.

[0026] The fifth lens has positive optical power, and the object side is convex and the image side is concave.

[0027] According to a second aspect of the present disclosure, a camera module is provided, including a lens as described in any of the above embodiments.

[0028] According to a third aspect of the present disclosure, an electronic device is provided, including a camera module as described in any of the above embodiments, wherein the protrusion engages with an opening in a display panel on the electronic device.

[0029] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0030] As can be seen from the above embodiments, in this disclosure, the first lens can be set to protrude from the lens barrel so that the light incident surface is located outside the lens barrel. Compared with the related technology, where the lens barrel and the lens are inserted together through the opening on the display panel, in this disclosure, since only the first lens is inserted through the opening, the size of the opening can be reduced, thereby increasing the screen ratio of the electronic device.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0033] Figure 1 This is a schematic diagram of the structure of a lens according to an exemplary embodiment.

[0034] Figure 2 This is a schematic diagram of the structure of another lens according to an exemplary embodiment.

[0035] Figure 3 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment.

[0036] Figure 4 This is a cross-sectional schematic diagram of an electronic device according to an exemplary embodiment.

[0037] Figure 5 This is a schematic diagram of the structure of another lens according to an exemplary embodiment.

[0038] Figure 6 This is an on-axis chromatic aberration curve of a lens according to an exemplary embodiment.

[0039] Figure 7 This is an astigmatism curve diagram of a lens according to an exemplary embodiment.

[0040] Figure 8 This is a distortion curve diagram of a lens according to an exemplary embodiment.

[0041] Figure 9 This is a magnification chromatic aberration curve of a lens according to an exemplary embodiment. Detailed Implementation

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0043] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0045] Figure 1 This is a schematic diagram illustrating the structure of a lens 100 according to an exemplary embodiment, such as... Figure 1 As shown, the lens 100 may include a lens barrel 1 and a lens group 2 mounted on the lens barrel 1. The lens group 2 may include a single first lens 21 and a sub-lens group 22. The sub-lens group 22 may include multiple lenses, for example... Figure 1 As shown, the sub-lens group 22 may include a second lens 221 and a third lens 222, or as shown in the figure. Figure 2 As shown, the lens group 22 may include a second lens 221, a third lens 222, a fourth lens 223, and a fifth lens 224. Of course, this description only takes the example of a sub-lens group 22 including two or four lenses. In other embodiments, the sub-lens group 22 may also include other numbers of lenses, such as three or five lenses, etc., which will not be described in detail here.

[0046] Still with Figure 1 , Figure 2As shown, the multiple lenses included in the sub-lens group 22 and the first lens 21 can be aligned along the incident direction of external light (i.e., Figure 1 The elements are arranged sequentially in the direction indicated by the middle arrow A, and the first lens 21 may include a light incident surface, meaning that external light first enters the first lens 21 during its entry into the lens 100, and subsequently enters each lens included in the sub-lens group 22. For example, Figure 1 , Figure 2 As shown, the first lens 21 is close to the first end of the lens barrel 1, at least a portion of the first lens 21 protrudes from the end face of the lens barrel 1, and the light incident surface is located outside the lens barrel 1.

[0047] As can be seen from the above embodiments, in this disclosure, the first lens 21 can be configured to protrude from the lens barrel 1, so that the light incident surface is located outside the lens barrel 1. Compared with the related technology, where the lens barrel and the lens are inserted together through the opening on the display panel, in this disclosure, since only the first lens 21 is inserted through the opening, the size of the opening can be reduced, thereby increasing the screen ratio of the electronic device.

[0048] In this embodiment, in order to improve the connection stability between the lens barrel 1 and the lenses included in the lens group 2, such as... Figure 1 , Figure 2 As shown, the lens barrel 1 may include a plurality of stepped portions 11 located inside the lens barrel 1. Each stepped portion 11 can cooperate with a lens included in the lens group 2, so that when the pressing device presses the lens into the lens barrel 1, the corresponding stepped portion 11 can limit it and prevent excessive pressing that could cause the lens to break.

[0049] In the above embodiments, in order to reduce the difficulty of fitting the first lens 1 with the opening on the display panel, the center thickness of the first lens 21 is greater than the center thickness of each lens included in the sub-lens group 22, and at the same time, as Figure 3 , Figure 4 As shown, when the lens 100 is configured into the camera module 200 and the camera module 200 is configured into the electronic device 300, the portion of the first lens 21 that protrudes from the lens barrel 1 can pass through the opening 3011 on the display panel 301.

[0050] It should be noted that the center thickness refers to the thickness of each lens element included in lens 100 at the location along the optical axis. For example... Figure 2 As shown in the figure, the optical axis of lens 100 is represented by the straight line L. The center thickness of the first lens 21 is shown as D1 in the figure, and the center thickness of the second lens 221 is shown as D2. D1 is greater than D2; specifically, D1 can be three times greater than D2, which facilitates the first lens 1 passing through the opening 3011. The second lens 221 is the lens within the sub-lens group 22 that is closest to the first lens 21.

[0051] At least one of the first lens 21, the second lens 221, the third lens 222, the fourth lens 223, and the fifth lens 224 has an Abbe number of less than 20; and any one of the first lens 21, the second lens 221, the third lens 222, the fourth lens 223, and the fifth lens 224 has a refractive index greater than or equal to 1.52 and less than or equal to 1.68, which is beneficial to improving the imaging effect of the lens 100.

[0052] There are multiple ways to fix the first lens 21. Two of these embodiments will be described below as examples.

[0053] In one embodiment, such as Figure 2 As shown, the first lens 21 can be fixedly connected to a lens disposed within the sub-lens group 22 facing the first lens 21, and the lens connected to the first lens 21 can be limited by the lens barrel 1. That is, in Figure 2 In the illustrated embodiment, the first lens 21 can be fixedly connected to the second lens 221, and the second lens 221 can cooperate with the stepped portion 11, thereby fixing the first lens 21 relative to the lens barrel 1. In this technical solution, the first lens 21 can be fixed to the lens barrel 1 by the second lens 221, so the first lens 21 can completely protrude from the end face of the lens barrel 1, which is beneficial to the cooperation between the first lens 21 and the opening 3011.

[0054] In one embodiment, such as Figure 2 As shown, the lens disposed within the sub-lens group 22 facing the first lens 21 may include a recess 2211, that is, in Figure 2 The second lens 221 may include a recess 2211, and the first lens 21 can be fastened into the recess 2211 by an external pressing device, thereby achieving fixation; in another embodiment, the first lens 21 and the second lens 221 may be fixed by adhesive dispensing. Of course, in yet another embodiment, while the first lens 21 is fastened into the recess 2211, the two may be further connected by adhesive dispensing, which can improve the connection stability between the first lens 21 and the second lens 221.

[0055] In another embodiment, such as Figure 5 As shown, the first lens 21 may include a supporting portion 211 and a protrusion 212 protruding outward from the supporting portion 211. The protrusion 212 can cooperate with an opening 3011 on the display panel 301 to pass through the opening 3011. The supporting portion 211 can cooperate with a stepped portion 11 to limit the position of the first lens 21. Relative to... Figure 2The technical solution shown does not require processing of the second lens 221 located in the sub-lens group 22 facing the first lens 21, and there is no direct connection between the two, which helps to ensure the light transmission effect of the second lens 221 and improve the imaging effect of the lens 100.

[0056] In the above embodiments, it is still based on Figure 5 As shown, the lens 100 may also include a spacer 3. The spacer 3 can be disposed between the first lens element 21 and the sub-lens group 22, and between adjacent lenses within the sub-lens group 22. The spacer 3 can improve the shock resistance of the lens 100 and block stray light, thereby improving image quality. For example, as... Figure 5 As shown, the isolating member 3 may include a first isolating member 31 located between the first lens 21 and the sub-lens group 22, a second isolating member 32 located between the second lens 221 and the third lens 222, a third isolating member 33 located between the third lens 222 and the fourth lens 223, and a fourth isolating member 34 located between the fourth lens 223 and the fifth lens 225. The first isolating member 31, the second isolating member 32, the third isolating member 33, and the fourth isolating member 34 may be isolating plates or isolating rings surrounding the inner side of the lens barrel 1. All of these isolating members extend from the inner side of the lens barrel 1 towards the optical axis of the lens 100 to avoid blocking light from the central area of ​​the lens 100.

[0057] In this embodiment, in the incident direction of the light (i.e. Figure 5 (In the direction indicated by the middle arrow A) The circumferential dimensions of the lenses included in the lens group 2 increase sequentially, so that when extended along the incident direction of light, the inner diameter of the lens barrel 1 gradually increases, and correspondingly, the outer diameters of the first isolation member 31, the second isolation member 32, the third isolation member 33 and the fourth isolation member 34 also gradually increase.

[0058] Based on the above embodiments, still using Figure 5 As shown, the lens 100 may also include a light hood 4, which may include a connecting part 41 and a first light-shielding part 42. The connecting part 41 can be used to connect the lens 1 to fix and limit the entire light hood 4. The first light-shielding part 42 is connected to the connecting part 41, and the first light-shielding part 42 at least covers the side of the first lens 21 that protrudes from the lens barrel 1, thereby preventing external light from entering from the side of the protruding part of the first lens 21 and blocking stray light.

[0059] Still with Figure 5As shown, the light shield 4 may also include a second light shield 43, which is connected to the first light shield 42. The second light shield 43 can cover a portion of the surface of the first lens 21 that is perpendicular to the incident light, thereby reducing the aperture of the lens 100 for light to enter, which is beneficial to reducing the aperture of the opening 3011 and thus increasing the screen ratio of the electronic device 300.

[0060] Based on the technical solution of this disclosure, since the thickness of the first lens 21 is increased in this disclosure, the imaging effect of the lens 100 can be improved by adjusting the optical power of each lens, so that the incident angle between the light entering the lens 100 through the lens and the optical axis is smaller and softer, thereby reducing sensitivity.

[0061] For example, taking a sub-lens group 22 comprising a second lens 221, a third lens 222, a fourth lens 223, and a fifth lens 224, and the spacing between the second lens 221, the third lens 222, the fourth lens 223, and the fifth lens 224 and the first lens 21 gradually increasing, the first lens 21 configured in the lens 100 of this disclosure can have positive optical power, and the object side is convex and the image side is convex; the second lens 221 has negative optical power, and the object side is concave and the image side is concave; the third lens 222 has negative optical power, and the object side is concave and the image side is concave; the fourth lens 223 has positive optical power, and the object side is convex and the image side is convex; the fifth lens 224 has positive optical power, and the object side is convex and the image side is concave.

[0062] Based on the lens 100 disclosed in this embodiment, various parameter curves of the lens 100 are obtained through optical system analysis, such as... Figures 6-9 As shown, the imaging of lens 100 in this disclosure is better.

[0063] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0064] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A lens, characterized in that, include: Lens tube; A lens group, comprising a single first lens and a sub-lens group, wherein the sub-lens group comprises multiple lenses, and the multiple lenses and the first lens are arranged sequentially along the incident direction of light. The first lens includes a light incident surface near the first end of the lens barrel, and at least a portion of the first lens protrudes from the end face of the first end of the lens barrel, wherein the light incident surface is located outside the lens barrel. The sub-lens group includes a second lens, a third lens, a fourth lens, and a fifth lens, and the spacing between the second lens, the third lens, the fourth lens, and the fifth lens and the first lens gradually increases; The first lens has positive optical power, and the object side and the image side are both convex. The second lens has negative optical power, and the object side is concave and the image side is concave. The third lens has negative optical power, and the object side is concave and the image side is concave. The fourth lens has positive optical power, and the object side is convex and the image side is convex. The fifth lens has positive optical power, and the object side is convex and the image side is concave. The first lens and the second lens are fixed together by adhesive dispensing.

2. The lens according to claim 1, characterized in that, The lens barrel includes multiple stepped sections located inside the lens barrel, and each stepped section cooperates with a lens included in the sub-lens group.

3. The lens according to claim 1, characterized in that, The center thickness of the first lens is not less than three times the center thickness of the lens closest to the first lens in the sub-lens group.

4. The lens according to claim 1, characterized in that, The first lens is fixedly connected to a lens in the sub-lens group that faces the first lens, and the lens in the sub-lens group that is connected to the first lens is limited by the lens barrel.

5. The lens according to claim 3, characterized in that, The lens in the sub-lens group facing the first lens includes a recessed portion, and the first lens is fastened to the recessed portion.

6. The lens according to claim 1, characterized in that, The first lens includes a support portion and a protrusion portion protruding outward from the support portion. The protrusion portion protrudes from the end face of the first end of the lens barrel. The support portion cooperates with the lens barrel to limit the position of the first lens.

7. The lens according to claim 1, characterized in that, It also includes multiple isolation components, which are provided between the first lens and the sub-lens group, and between adjacent lenses within the sub-lens group.

8. The lens according to claim 1, characterized in that, Along the incident direction of light, the circumferential dimensions of the lenses included in the lens group increase sequentially.

9. The lens according to claim 1, characterized in that, The lens also includes a lens hood, the lens hood comprising: A connecting part, which is connected to the lens barrel; A first light-shielding part is connected to the connecting part, and the first light-shielding part at least covers the side of the first lens that protrudes from the lens barrel portion.

10. The lens according to claim 9, characterized in that, The light shield also includes: The second light-shielding part is connected to the first light-shielding part, and the second light-shielding part covers a portion of the surface of the first lens that is perpendicular to the incident light.

11. The lens according to claim 1, characterized in that, The first lens and the sub-lens group include at least one lens whose Abbe number is less than 20.

12. The lens according to claim 1, characterized in that, The refractive index of any one of the multiple lenses included in the first lens and the sub-lens group is greater than or equal to 1.52 and less than or equal to 1.

68.

13. A camera module, characterized in that, Includes the lens as described in any one of claims 1-12.

14. An electronic device, characterized in that, Including the camera module as described in claim 13, wherein the first lens protrudes from one end of the first end of the lens barrel and engages with an opening in the display panel of the electronic device.

Images