Lens, lens module and electronic device

Abstract

The present invention provides a lens. [Solution] A lens barrel and a plurality of lenses housed in the lens barrel, the lens has an imaging section for forming an image and a mounting section provided outside the imaging section for assembly, the plurality of lenses have at least one light-reducing lens provided close to an imaging surface, the light-reducing lens has at least one light-reducing tangent parallel to an optical axis, the vertical distance from the light-reducing tangent to the optical axis is smaller than the radius of the imaging section, the lens barrel has a top surface away from the imaging surface and a side wall extending from the top surface in a bent manner, the side wall has a flat wall parallel to the light-reducing tangent, and the light-reducing tangent and the flat wall are installed opposite each other. This makes it possible to reduce the volume of the lens, and at the same time, a lens module and an electronic device having the lens attached thereto are provided, and the distance from a screen opening to a bezel of an electronic device can be shortened.

Description

[Technical field]

[0001] The present invention relates to the field of imaging technology, in particular to a lens, a lens module and an electronic device. [Background technology]

[0002] In electronic devices such as smartphones, consumers' demand for full screens is increasing, and the existing notch displays, waterdrop screens and punch-hole screens are gradually unable to meet the market needs. In the development process of full screens, the placement of the front lens on the screen is the most prominent obstacle, the main reason for which is the limitation of the lens size, especially the bottom dimension of the lens module is too large, the distance from the entrance pupil of the lens to the bezel is large, and the lens opening needs to be placed to the display area of ​​the screen, occupying the area of ​​the display area.

[0003] Therefore, there is a need to provide a lens, a lens module, and an electronic device. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to provide a lens, a lens module, and an electronic device in which the distance from the entrance pupil of the lens to the bezel is short. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention provides a lens including a lens barrel and a plurality of lenses housed within the lens barrel, the lenses having an imaging section for forming an image and a mounting section provided outside the imaging section for assembly, the plurality of lenses having at least one dimming lens provided close to an imaging surface, the dimming lens having at least one dimming tangent parallel to an optical axis, the vertical distance from the dimming tangent to the optical axis being smaller than the radius of the imaging section, the lens barrel having a top surface away from the imaging surface and a side wall extending in a bent manner from the top surface, the side wall having a flat wall parallel to the dimming tangent, the dimming tangent and the flat wall being arranged opposite each other.

[0006] Preferably, the plurality of lenses further comprises at least one cutting edge lens, the cutting edge lens being disposed on the object side of the dimming lens, the cutting edge lens having at least one assembly tangent surface parallel to the optical axis, the vertical distance from the assembly tangent surface to the optical axis being smaller than the radius of the mounting portion and larger than the radius of the imaging portion, the assembly tangent surface being parallel to the dimming tangent surface, or the assembly tangent surface and the dimming tangent surface being flush with each other.

[0007] Preferably, the planar wall extends to the top surface.

[0008] Preferably, the light-attenuating lens has two light-attenuating contact surfaces perpendicular to each other, and the lens barrel has two flat walls.

[0009] Preferably, the dimming lens has two dimming contact surfaces perpendicular to each other, the cutting edge lens has two of the assembly contact surfaces, and the lens barrel has two of the planar walls, and the two assembly contact surfaces correspond one-to-one to the two dimming contact surfaces.

[0010] Preferably, both of the two planar walls extend to the top surface.

[0011] Preferably, the two extinction surfaces are at equal perpendicular distances from the optical axis.

[0012] The present invention provides a lens module, the lens module including a lens, a case that houses the lens, a sensor fixed to the case, and a circuit board, the lens including a barrel, the barrel including a top surface away from an image forming surface, and a side wall that extends from the top surface in a bent manner, the side wall including at least one flat wall, the case including an upper surface parallel to the top surface, and a side surface that extends from the top surface in a bent manner, the top surface being rectangular and including an opening, the opening being spaced apart from an aperture arc by at least one The lens has an entrance pupil diameter located inside the aperture, the aperture cutting edge is parallel to the planar wall, the side has a first side parallel to the aperture cutting edge and a second side connected to the first side, the imaging range of the lens is determined by one imaging arc and at least one imaging cutting edge, the sensor is disposed within the imaging range of the lens, the sensor is rectangular, and the head diameter of the lens is smaller than the short side length of the sensor.

[0013] Preferably, the aperture comprises two mutually orthogonal aperture cutting edges, the side walls comprise two mutually orthogonal planar walls, and the imaging area of ​​the lens has two mutually orthogonal imaging cutting edges.

[0014] Preferably, the two aperture cutting edges are equal in length.

[0015] The present invention provides an electronic device comprising a screen and a lens module, the screen comprising a display area and a non-display area provided outside the display area, the screen further comprising a lens opening corresponding to the lens module, at least a portion of the lens opening being located in the non-display area.

[0016] Preferably, the lens opening is located on one side of the screen.

[0017] Preferably, the lens opening is located at one corner of the screen.

[0018] Preferably, the lens opening is entirely located in the non-display area. Effect of the Invention

[0019] The beneficial effect of the present invention is that by providing a light-reducing contact surface and a flat wall, the projection area of ​​the lens module in the optical axis direction is reduced, i.e., the distance from the entrance pupil to the bezel is shortened, the lens module can be positioned closer to the bezel of the electronic device, and at least a part of the entrance pupil can be positioned in the non-display area of ​​the screen, which reduces the occupation area of ​​the lens opening in the display area and helps to realize the full-screen design of the electronic device. [Brief description of the drawings]

[0020] In order to more clearly describe the technical ideas in the embodiments of the present invention, the drawings necessary for describing the embodiments are briefly described below. Obviously, the following description of the drawings is only for describing some embodiments of the present invention, and those skilled in the art can obtain other drawings from these drawings without creative efforts. [Figure 1] FIG. 1 is a diagram showing the configuration of a lens module according to the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of a lens according to the present invention taken along line A-A. [Diagram 3] FIG. 3 is a schematic diagram of the optical path of the lens in FIG. 2 of the present invention. [Figure 4] FIG. 4 is a diagram comparing the imaging range of the lens module, the sensor, and the layout of the lens head in the present invention. [Diagram 5] FIG. 5 is a schematic diagram of an electronic device of the present invention. [Figure 6] FIG. 6 is a diagram showing the configuration of another lens module according to the present invention. [Figure 7]FIG. 7 is a comparative diagram of the imaging range, sensor and lens head layout of another lens module in the present invention. [Figure 8] FIG. 8 is a schematic diagram of another electronic device of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] In order to clarify the objectives, technical solutions and advantages of the present invention, the following detailed description will be given of the embodiments of the present invention with reference to the drawings. Although many technical details are described in the embodiments of the present invention for the sake of easy understanding of the present invention, it is obvious to those skilled in the art that the technical invention protected by the present invention can be realized without these technical details and various changes and modifications based on the following embodiments.

[0022] As shown in FIGS. 1 to 5, the present invention provides a lens module 100 including a lens 10, a case 20 for accommodating the lens 10, a sensor 40 fixed to the case, and a circuit board 30. The lens 10 includes a lens barrel 19 and a plurality of lenses 13 housed within the lens barrel 19, each lens 13 having an imaging section 132 for forming an image and an attachment section 131 provided outside the imaging section 132 for assembly, the plurality of lenses 13 having two dimming lenses 14 provided close to the image forming surface Si, the dimming lens 14 having a dimming tangent 141 parallel to the optical axis OO', the vertical distance from the dimming tangent 141 to the optical axis OO' being smaller than the radius of the image forming section 132, the lens barrel 19 having a top surface 11 away from the image forming surface Si and a side wall 12 extending in a bent manner from the top surface 11, the side wall 12 having a flat wall 121 parallel to the dimming tangent 141, the dimming tangent 141 and the flat wall 121 being arranged opposite each other. Compared with the prior art, by providing the light-reducing contact surface 141 and the flat wall 121, the projection area of ​​the lens module 100 in the direction of the optical axis OO' can be reduced, i.e., the bottom dimension of the lens module 100 can be reduced, so that the lens module 100 can be arranged closer to the bezel of the electronic device 1, and at least a part of the entrance pupil can be arranged in the non-display area 3 of the screen, and the area occupied by the lens opening 5 in the display area 4 can be reduced. In other words, the lens opening 5 needs to be arranged corresponding to the entrance pupil of the lens, that is, the entrance pupil of the lens determines the position of the lens opening on the screen. The bottom dimension of the lens module is reduced on one side, and the entrance pupil is closer to the bezel, so that the lens opening 5 is also closer to the bezel, which helps to realize the full-screen design of the electronic device. In other embodiments, the number of light-reducing lenses can be increased or decreased as required, and it is necessary to include at least one light-reducing lens, and if only one light-reducing lens is included, it is most effective to place this light-reducing lens on the side closest to the image plane.

[0023] In this embodiment, the lens module 100 can have different image heights and imaging ranges in different directions, the dimming image height IH2 on the dimming contact side is smaller than the corresponding normal image height IH1, the imaging range IA1 of the lens 10 is determined by one imaging arc IA12 and one imaging cutting edge IA11, the sensor 40 is completely disposed within the imaging range IA1 of the lens 10, the sensor 40 has a rectangular shape, and the shape may be 4:3 or 16:9, etc., a gap may be provided between the imaging cutting edge IA11 and the short side of the sensor, so that a certain assembly misalignment does not affect the imaging of the sensor, the shape of the image formed by the sensor is the same as the shape of the sensor, and the head diameter LOD1 of the lens 10 is smaller than the short side length of the sensor.

[0024] In this embodiment, the case 20 has a top surface 21 parallel to the top surface 11 and side surfaces 22 bending and extending from the top surface 21, the top surface 21 is rectangular and has an opening 211, the opening 211 consists of one aperture arc 212 and one aperture cutting edge 213, the entrance pupil diameter ENPD of the lens 10 is located inside the opening 211, the aperture cutting edge 213 is parallel to the planar wall 121, and the side surfaces 22 have two first side surfaces 221 parallel to the aperture cutting edge 213 and two second side surfaces 222 connected to the first side surfaces 221.

[0025] The electronic device 1 includes a screen 9, a lens module 100, and a bezel 2, the screen 9 includes a display area 4 and a non-display area 3 outside the display area 4, the screen 9 further includes a lens opening 5 corresponding to the lens module 100, the lens opening 5 is located on one side of the screen 9, and at least a portion of the lens opening 5 is located in the non-display area 3, thereby reducing the screen opening in the display area 4. In another optional embodiment, the lens opening may be located completely in the non-display area, thereby realizing a full screen of the electronic device.

[0026] In this embodiment, the lens 13 further includes four cutting edge lenses 15, the cutting edge lenses 15 are disposed on the object side of the dimming lens 14, and the cutting edge lenses 15 have an assembly interface 151 parallel to the optical axis OO', and the vertical distance from the assembly interface 151 to the optical axis OO' is smaller than the radius of the mounting part 131 and larger than the radius of the imaging part 132. That is, in the lens 13, in addition to the two lenses disposed near the image side being dimming lenses, the remaining lenses are all cutting edge lenses, which can reduce the volume and at the same time reasonably maintain the optical performance of the lens. The assembly interface 151 is parallel to the dimming interface 141, or the assembly interface 151 and the dimming interface 141 are flush with each other, and the two types of interfaces are on the same side of the lens and have the same angle, so that the volume of the entire lens can be minimized. In other embodiments, the number of dimming lenses can be adjusted according to different lens dimensions and different volume or optical performance requirements designed by the lens, and there only needs to be at least one dimming lens. Similarly, the number of cutting edge lenses can be adjusted, or even no cutting edge lenses can be installed. In order to meet special optical requirements, such as eliminating stray light, the dimming contact surface and the assembly contact surface can be non-coplanar, non-parallel, or cross-installed at an angle in a plane perpendicular to the optical axis. Different structural designs can be used to achieve the effect of eliminating stray light.

[0027] In this embodiment, there is only one flat wall 121, and the flat wall 121 extends to the top surface 11, that is, one flat wall 121 is directly connected to the top surface. This design is the optimal solution for minimizing the volume, and at the same time, it can reduce the manufacturing difficulty of many processes and increase the yield rate. For example, the flat wall extending to the top surface is easier to insert and remove. In other embodiments, by adjusting the number of dimming lenses and cutting edge lenses, the flat wall may be installed stepwise opposite the dimming contact surface or the assembly contact surface, or may be set in a stepped shape to correspond to the stepped lens edge. For example, when the first lens from the object side is neither a dimming lens nor a cutting edge lens, the entire outer surface of the corresponding lens barrel is a cylinder, and the second lens from the object side is a cutting edge lens or a dimming lens, and the outer surface of the corresponding lens barrel is a flat wall, and at this time, there is a gap between the flat wall and the top surface, and some of the cylindrical walls are separated.

[0028] 6 to 8 show another embodiment of the present invention, and only the differences from the above embodiment will be briefly described below. In this embodiment, the cross-sectional views of the lens 10' in the lens module 100' along the BB direction and along the CC direction are similar to those in FIG. 2, so they will not be drawn repeatedly and will be described with reference to FIG. 2.

[0029] In this embodiment, the dimming lens 14 has two dimming contact surfaces 141 that are perpendicular to each other, the cutting edge lens 15 has two assembly contact surfaces 151, and the lens barrel 19' has two planar walls 121, and the two assembly contact surfaces 151 correspond one-to-one to the two dimming contact surfaces 141.

[0030] The opening 211' of the case 20' has two opening cutting edges 213 perpendicular to each other, the side wall 12 has two planar walls 121 perpendicular to each other, the imaging range IA2 of the lens is determined by two imaging cutting edges IA21 perpendicular to each other and one imaging arc IA22, the sensor 41 is completely disposed within the imaging range IA2 of the lens 10, the sensor 41 is rectangular and the shape may be 4:3 or 16:9, etc., a gap may be provided between the imaging cutting edge IA21 and the short side of the sensor, so that a certain assembly misalignment does not affect the sensor imaging, the image shape formed by the sensor is the same as the sensor shape, and the head diameter LOD2 of the lens 10 is smaller than the short side length of the sensor 41.

[0031] In this embodiment, the two aperture cutting edges 213 have the same length, the two planar walls both extend to the top surface, the two light-attenuating contact surfaces 141 have the same vertical distance from the optical axis OO', and the two assembly contact surfaces 151 have the same vertical distance from the optical axis OO'. This makes the shape regular and makes it easy to evaluate the optical performance. In other embodiments, the two aperture cutting edges may have different lengths, the two light-attenuating contact surfaces may have unequal vertical distances from the optical axis, or the two assembly contact surfaces may have unequal vertical distances from the optical axis.

[0032] In this embodiment, the bottom dimension of the lens module 100' is reduced in both directions, the entrance pupil is moved diagonally to the bezel, and the lens opening 5' of the electronic device 1' is located at one corner of the screen 9', making full use of the diagonal shift of the lens entrance pupil due to the reduction in the bottom dimension of the lens module, and the lens opening 5' is entirely located in the non-display area 3, eliminating the screen opening in the display area 4. In other alternative embodiments, the lens opening may be partially located in the non-display area, and only one fan-shaped opening may be provided in the display area.

[0033] The above is merely an embodiment of the present invention, and further modifications can be made without departing from the concept of the present invention, but it should be understood by those skilled in the art that all of these modifications fall within the scope of the present invention.

Claims

1. A lens including a lens barrel and a plurality of lenses housed in the lens barrel, the lens including an imaging portion for forming an image and an attachment portion provided outside the imaging portion for assembly, the plurality of lenses include at least one light-reducing lens provided adjacent to an image-forming surface, the light-reducing lens having at least one light-reducing tangent parallel to an optical axis, a vertical distance from the light-reducing tangent to the optical axis being smaller than a radius of the image-forming portion, the lens barrel having a top surface away from the image-forming surface and a side wall extending in a bent manner from the top surface, the side wall having a flat wall parallel to the light-reducing tangent, the light-reducing tangent and the flat wall being disposed opposite each other, The light-reducing lens has only two light-reducing contact surfaces that are perpendicular to each other, and the lens barrel has only two of the planar walls; The two planar walls extend from the bottom end surfaces of the side walls to the top surface. A lens characterized by:

2. The lens of claim 1, wherein the plurality of lenses further comprises at least one cutting edge lens, the cutting edge lens being disposed on the object side of the dimming lens, the cutting edge lens having at least one assembly tangent surface parallel to the optical axis, a vertical distance from the assembly tangent surface to the optical axis being smaller than a radius of the mounting portion and larger than a radius of the imaging portion, the assembly tangent surface being parallel to the dimming tangent surface, or the assembly tangent surface and the dimming tangent surface being flush with each other.

3. The lens described in Claim 2, characterized in that the cutting edge lens has two of the assembly contact surfaces, and the two assembly contact surfaces correspond one-to-one to the two dimming contact surfaces.

4. 4. The lens of claim 3, wherein the two extinction surfaces are equidistant from the optical axis.

5. A lens module including a lens according to any one of claims 1 to 4, a case for accommodating the lens, a sensor fixed to the case, and a circuit board, a lens module characterized in that the case has a top surface parallel to the top surface and a side surface extending and bending from the top surface, the top surface being rectangular and having an opening, the opening being composed of one aperture arc and at least one aperture cutting edge, an entrance pupil diameter of the lens is located inside the opening, the aperture cutting edge is parallel to the planar wall, the side surface has a first side surface parallel to the aperture cutting edge and a second side surface connected to the first side surface, an imaging range of the lens is determined by one imaging arc and at least one imaging cutting edge, the sensor is provided within the imaging range of the lens, the sensor is rectangular, and a head diameter of the lens is smaller than a short side length of the sensor.

6. 6. The lens module of claim 5, wherein the aperture has two aperture cutting edges that are perpendicular to each other, the side walls have two planar walls that are perpendicular to each other, and the imaging area of ​​the lens has two imaging cutting edges that are perpendicular to each other.

7. The lens module according to claim 6 , wherein the two aperture cutting edges have equal lengths.

8. 6. An electronic device comprising: a screen; and the lens module according to claim 5, wherein the screen comprises a display area and a non-display area provided outside the display area, and the screen further comprises a lens opening corresponding to the lens module, An electronic device, wherein at least a portion of the lens opening is located in the non-display area.

9. 9. The electronic device of claim 8, wherein the lens opening is located on one side of the screen.

10. 9. The electronic device of claim 8, wherein the lens opening is located at one corner of the screen.

11. The electronic device of claim 9 , wherein the lens opening is located entirely in the non-display area.

12. The electronic device of claim 10 , wherein the lens opening is located entirely in the non-display area.

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