Lens device and electronic device

Abstract

The present invention provides a lens device and an electronic device. [Solution] The lens device comprises a first lens group, a second lens group, and a prism, wherein the optical axis of the first lens group and the optical axis of the second lens group are arranged so as to form an included angle, the optical path of the first lens group is arranged closer to the object side than the optical path of the second lens group, and the prism is arranged between the first lens group and the second lens group to divide the lens device into the first lens group and the second lens group, and since the radial dimension of the first lens group closer to the object side is smaller than the radial dimension of the second lens group, it is possible to reduce the installation size suitable for the display screen, and furthermore, since the edge of at least one lens of the first lens group and the second lens group is provided with a cut edge, it is possible to reduce the radial dimension of the lenses in the lens groups and further reduce the radial dimensions of the first lens group and the second lens group, and it is possible to reduce the installation size suitable for the display screen.

Description

[Technical Field]

[0001] The present invention relates to the technical field of imaging lenses, and more particularly to lens devices and electronic devices. [Background technology]

[0002] With the continuous development of science and technology, electronic devices are evolving towards intelligence, and in addition to digital cameras, portable electronic devices such as tablet computers and mobile phones are also equipped with lens modules with photography functions to meet users' needs for photography at any time. However, since the radial dimension of the front lens of a mobile phone is generally large, the front lens of the mobile phone cannot fit into the black border of the screen, making it impossible to achieve a true all-screen experience, which seriously affects the user experience.

[0003] Therefore, in order to solve the above technical problems, it is necessary to provide a new lens device and electronic device. Summary of the Invention [Problem to be solved by the invention]

[0004] The objective of the present invention is to provide a lens device and electronic equipment to solve the technical problem that the radial dimension of the front lens of current mobile phones is generally large, so that the front lens of the mobile phone cannot fit into the black border of the screen, and a true all-screen cannot be realized. [Means for solving the problem]

[0005] The technical solution of the present invention is as follows: In a first aspect, the present invention provides a lens device, the lens device comprising: a first lens group, a second lens group, and a prism; an optical axis of the first lens group and an optical axis of the second lens group are disposed so as to form an included angle; an optical path of the first lens group is disposed closer to an object side than an optical path of the second lens group; and the prism is disposed between the first lens group and the second lens group and is used to fold the optical path. At least one of the first lens group and the second lens group has a cut edge.

[0006] In one embodiment, the optical axis of the first lens group and the optical axis of the second lens group are arranged perpendicular to each other.

[0007] In one embodiment, the first lens group includes a first lens barrel and a plurality of first lenses provided within the first lens barrel, the second lens group includes a second lens barrel and a plurality of second lenses provided within the second lens barrel, the prism is provided within the second lens barrel, and the first lens barrel is bonded and connected to the second lens barrel with an adhesive so that the optical axis of the first lens group and the optical axis of the second lens group form a predetermined included angle.

[0008] In one embodiment, at least one of the first lenses has a first cut edge and a second cut edge that are opposite each other, and at least one of the second lenses has a third cut edge and a fourth cut edge that are opposite each other.

[0009] In one embodiment, a first step hole is provided in the first lens barrel, and each of the first lenses is respectively accommodated in a step hole wall of the first step hole, a second step hole is provided in the second lens barrel, and each of the second lenses is respectively accommodated in a step hole wall of the second step hole, and a storage groove communicating with the second step hole is further provided in the second lens barrel, and the prism is accommodated in the storage groove.

[0010] In one embodiment, the second barrel is provided with a notch, and the first barrel is accommodated in the notch.

[0011] In one embodiment, three first lenses are provided and two second lenses are provided.

[0012] In one embodiment, the prism is a planar prism or an aspherical prism.

[0013] In a second aspect, the present invention further provides an electronic device including a housing, a display screen, and the lens device of any of the above embodiments, wherein the optical axis of the first lens group is perpendicular to the display screen and is disposed close to an inner wall of the display screen and an inner wall of the housing.

[0014] In one embodiment, the electronic device is a mobile phone. [Effects of the Invention]

[0015] The beneficial effects of the lens device and electronic device according to the present invention are as follows. By placing a prism between the first lens group and the second lens group, the height dimension of the lens device can be reduced by using the prism to bend the optical path, which is advantageous for making electronic devices thinner. By dividing the lens device into the first lens group and the second lens group, the radial dimension of the first lens group closest to the object side is smaller than the radial dimension of the second lens group, so the mounting dimension compatible with the display screen can be reduced. This allows the lens device to be better hidden within the black border of the display screen and the size of the display area on the display screen can be increased, which is advantageous for the all-screen design of the display screen and provides a better user experience.

[0016] Furthermore, since a cut edge is provided on the edge of at least one lens of the first lens group and the second lens group, the radial dimensions of the lenses in the lens group can be reduced, and the radial dimensions of the first lens group and the second lens group can be further reduced, thereby further reducing the mounting dimensions that fit the display screen. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic diagram illustrating how an imaging device according to the prior art is attached to an electronic device. [Figure 2] 1 is a schematic diagram illustrating how an imaging device according to an embodiment of the present invention is attached to an electronic device. [Figure 3] 10A and 10B are schematic diagrams illustrating how an imaging device according to another embodiment of the present invention is attached to an electronic device. [Figure 4] 1 is a schematic diagram of an imaging device according to an embodiment of the present invention. [Figure 5] FIG. 5 is an exploded perspective view of the imaging device of FIG. [Figure 6] FIG. 6 is an exploded perspective view of a first lens group in the imaging device shown in FIG. [Figure 7] FIG. 6 is an exploded perspective view of a second lens group and a prism in the imaging device shown in FIG. [Figure 8] FIG. 10 is a schematic diagram of an imaging device according to another embodiment of the present invention. [Figure 9] FIG. 9 is an exploded perspective view of the imaging device of FIG. 8. [Figure 10] FIG. 10 is an exploded perspective view of the first lens group in the imaging device shown in FIG. [Figure 11] FIG. 10 is an exploded perspective view of a second lens group and a prism in the imaging device shown in FIG. [Figure 12] 1 is a schematic diagram of an electronic device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention will be further described below with reference to the drawings and embodiments.

[0019] It is apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments, and all other embodiments that a person skilled in the art can obtain based on the embodiments of the present invention without any creative effort are all included in the scope of protection of the present invention.

[0020] In the following drawings, similar symbols and letters indicate similar elements, so that once an element is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In describing the present invention, the orientations or positional relationships indicated by technical terms such as "upper," "lower," "inner," and "outer," if based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships in which the inventive product is normally disposed when in use, are merely for the convenience and simplification of the description of the invention, and do not indicate or imply that the specified device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] Additionally, the terms "first" and "second" are used merely to distinguish between descriptions and should not be understood as indicating or implying relative importance.

[0023] It should be noted that, unless inconsistent, features in the embodiments of the present invention may be combined with one another.

[0024] An embodiment of the present invention provides an electronic device, which is a mobile terminal such as a mobile phone or a tablet computer. As shown in Figures 2 to 12, the electronic device includes a housing 30, a display screen 20, and a lens device 10. The display screen 20 includes a display area 22 and a black border 21 outside the display area 22, which is a non-display area. The display screen 20 has a lens aperture 23 facing the lens device 10, which is located on one side of the display screen 20. At least a portion of the lens aperture 23 is located within the black border 21, thereby reducing the size of the lens aperture 23 within the display area 22 and allowing the lens aperture 23 to be completely located within the black border 21, thereby realizing an all-screen electronic device.

[0025] The lens device 10 comprises a first lens group 100, a second lens group 200, and a prism 300, the optical axis of the first lens group 100 and the optical axis of the second lens group 200 are arranged to form an included angle, the optical path of the first lens group 100 is arranged closer to the object side than the optical path of the second lens group 200, and the prism 300 is arranged between the first lens group 100 and the second lens group 200 and is used to bend the optical path.

[0026] As can be seen, in the prior art, the mounting of an imaging device on an electronic device is such that, as shown in FIG. 1, the dimension D / 2 in FIG. 1 is large, so that the imaging device cannot be easily hidden within the black border 21 of the display screen 20.

[0027] In this embodiment, by providing the prism 300 between the first lens group 100 and the second lens group 200, the height dimension of the lens device 10 can be reduced by using the prism 300 to fold the optical path, which is advantageous for making electronic devices thinner. The lens device 10 is divided into the first lens group 100 and the second lens group 200, and the radial dimension of the first lens group 100 closest to the object side is smaller than the radial dimension of the second lens group 200. As shown in FIGS. 2 and 3, the dimension Y / 2 in the figures is significantly reduced, which makes it possible to reduce the installation dimensions compatible with the display screen 20. This allows the lens device 10 to be better hidden within the black border 21 of the display screen 20 and increases the dimension of the display area 22 on the display screen 20, which is advantageous for the all-screen design of the display screen 20 and improves the user experience.

[0028] Furthermore, in this embodiment, the edge of at least one of the lenses in the first lens group 100 and the second lens group 200 is provided with a cut edge, thereby reducing the radial dimension of the lenses in the lens group and further reducing the radial dimensions of the first lens group 100 and the second lens group 200. As shown in Figures 2 and 3, the dimension H in the figures is significantly reduced, which further reduces the mounting dimension compatible with the display screen 20 and ensures that the lens device 10 can be closer to, and even hidden by, the black border 21 of the display screen 20.

[0029] In one embodiment, as shown in FIGS. 2 and 3, the optical axis of the first lens group 100 is perpendicular to the display screen 20 and is located close to the inner wall of the display screen 20 and the inner wall of the housing 30, thereby reducing the mounting dimensions of the first lens group 100 to the display screen 20 and the housing 30, and thereby allowing the lens device 10 to be better hidden within the black border 21 of the display screen 20.

[0030] Furthermore, in this embodiment, the optical axis of the first lens group 100 and the optical axis of the second lens group 200 are perpendicular to each other, which makes it easy to install the lens device 10 in the housing 30 and the display screen 20, and is more advantageous for slimming down the electronic device. Specifically, the electronic device may be a mobile phone, which facilitates an all-screen design and slimming down the mobile phone.

[0031] It will be appreciated that in some embodiments, the optical axis of the first lens group 100 may be positioned to form an acute or obtuse angle with the display screen 20, and the optical axis of the first lens group 100 may be positioned to form an acute or obtuse angle with the optical axis of the second lens group 200.

[0032] In one embodiment, still referring to Figures 2 and 3, the first lens group 100 includes a first lens barrel 110 and a plurality of first lenses 120 arranged within the first lens barrel 110, and each of the first lenses 120 is mounted within the first lens barrel 110, thereby facilitating the integrated assembly of each of the first lenses 120.

[0033] In this embodiment, the second lens group 200 includes a second barrel 210 and a plurality of second lenses 220 arranged within the second barrel 210, and each of the second lenses 220 is mounted within the second barrel 210, which facilitates the integrated assembly of each of the second lenses 220.

[0034] Furthermore, the prism 300 is provided in the second lens barrel 210, and the first lens barrel 110 is bonded and connected to the second lens barrel 210 with an adhesive 410 so that the optical axis of the first lens group 100 and the optical axis of the second lens group 200 form a predetermined included angle.

[0035] By adjusting the bonding position of the first lens barrel 110 and the second lens barrel 210, the angle between the optical axis of the first lens group 100 and the optical axis of the second lens group 200 can be adjusted, making it easier to assemble the first lens group 100 and the second lens group 200.

[0036] In this embodiment, three first lenses 120 are provided and two second lenses 220 are provided, thereby configuring the lens device 10 as a five-lens module. By installing fewer lenses, the height and radial dimensions of the lens module can be reduced, which is advantageous for making electronic devices smaller and thinner.

[0037] It will be appreciated that in some embodiments, one, two, four or more first lenses 120 may be provided, and one, three or more second lenses 220 may be provided, thereby configuring the lens device 10 as a six-lens module, seven-lens module, etc., as desired.

[0038] In one embodiment, with continued reference to FIG. 3, the prism 300 is an aspheric prism 300, and the optical performance of the lens arrangement 10 can be improved by adding an aspheric surface 311 to a component of the prism 300.

[0039] Furthermore, the prism 300 includes a first optical surface 310 and a second optical surface 320 that are perpendicular to each other, and a third optical surface 330 that is arranged to form an acute angle with both the first optical surface 310 and the second optical surface 320, and at least one of the first optical surface 310 and the second optical surface 320 has an aspherical surface 311 formed thereon.

[0040] Specifically, the first optical surface 310 is arranged coaxially with the optical axis of the first lens barrel 110, the second optical surface 320 is arranged coaxially with the optical axis of the second lens barrel 210, and the aspherical surface 311 is formed on the first optical surface 310.

[0041] Of course, in other embodiments, as shown in FIG. 2, the prism 300 may be a planar prism 300, i.e., the first optical surface 310 and the second optical surface 320 are both flat optical surfaces, or the second optical surface 320 of the prism 300 is an aspheric surface 311, and the optical surfaces of the prism 300 may be arranged according to the design requirements of the lens module to ensure the optical performance.

[0042] In one embodiment, as shown in Figures 6, 7, 10 and 11, at least one of the first lenses 120 has a first cut edge 101 and a second cut edge 102 arranged opposite to each other, and at least one of the second lenses 220 has a third cut edge 201 and a fourth cut edge 202 arranged opposite to each other, thereby easily reducing the radial dimensions of the lenses in the lens group, further reducing the radial dimensions of the first lens group 100 and the second lens group 200, and thereby further reducing the mounting dimensions compatible with the display screen 20.

[0043] In this embodiment, each lens in the first lens group 100 and each lens in the second lens group 200 has multiple cut edge designs to meet the mounting needs of the lens device 10 to electronic equipment.

[0044] In one specific embodiment, as shown in FIGS. 10 and 11, three first lenses 120 are arranged in the first lens group 100, which are a 1-1 lens 121, a 1-2 lens 122, and a 1-3 lens 123, respectively, and the 1-1 lens 121, the 1-2 lens 122, and the 1-3 lens 123 are each provided with a first cut edge 101 and a second cut edge 102 facing each other. Two second lenses 220 are arranged in the second lens group 200, which are a 2-1 lens 221 and a The 2-2 lens 222 has a third cut edge 201 on one side of the 2-1 lens 221, and the 2-2 lens 222 has the third cut edge 201 and the fourth cut edge 202 facing each other, thereby reducing the radial dimension of each lens, which is advantageous for making the lens device 10 thinner, and also reducing the attachment dimensions between the first lens group 100 and the display screen 20 or the housing 30, allowing the lens device 10 to be better hidden within the black border 21 of the display screen 20.

[0045] In another specific embodiment, three first lenses 120 are arranged in the first lens group 100, namely, a 1-1 lens 121, a 1-2 lens 122, and a 1-3 lens 123, where the 1-1 lens 121, the 1-2 lens 122, and the 1-3 lens 123 all have a first cut edge 101 and a second cut edge 102 facing each other; and two second lenses 220 are arranged in the second lens group 200, namely, a 2-1 lens 221 and a 2-2 lens 222, where the 2-1 lens 221 and the 2-2 lens 222 all have a third cut edge 201 and a fourth cut edge 202 facing each other, thereby reducing the radial dimension of each lens, which is advantageous for making the lens device 10 thinner, and also reducing the mounting dimensions between the first lens group 100 and the display screen 20 or the housing 30, allowing the lens device 10 to be better hidden within the black border 21 of the display screen 20.

[0046] In yet another specific embodiment, three first lenses 120 are arranged in the first lens group 100, which are a 1-1 lens 121, a 1-2 lens 122, and a 1-3 lens 123, respectively, and the 1-1 lens 121, the 1-2 lens 122, and the 1-3 lens 123 are each provided with a first cut edge 101 and a second cut edge 102 facing each other. Three second lenses 220 are arranged in the second lens group 200, which are a 2-1 lens 221, a 2-2 lens 222, and a 2-3 lens 123. The 2-1 lens 221, the 2-2 lens 222, and the 3-3 lens are all provided with a third cut edge 201 and a fourth cut edge 202 facing each other, which reduces the radial dimension of each lens, which is advantageous for making the lens device 10 thinner, and also reduces the attachment dimensions between the first lens group 100 and the display screen 20 or the housing 30, allowing the lens device 10 to be better hidden within the black border 21 of the display screen 20.

[0047] Of course, in other embodiments, each lens in the lens device 10 may have a different cut edge design. For example, as shown in Figures 6 and 7, three first lenses 120 are arranged in the first lens group 100, namely, a 1-1 lens 121, a 1-2 lens 122, and a 1-3 lens 123, where the 1-1 lens 121, the 1-2 lens 122, and the 1-3 lens 123 all have a first cut edge 101 and a second cut edge 102 facing each other. Two second lenses 220 are arranged in the second lens group 200, namely, a 2-1 lens 221 and a 2-2 lens 222, where the 2-1 lens 221 and the 2-2 lens 222 all have cut edge edges, thereby ensuring the optical performance of the lens device 10. It should be noted that the reduction in the dimensions of the first lens group 100 and the second lens group 200 in the lens device 10 by providing cut edges to each lens in the lens device 10 is premised on the fact that the optical performance of each lens in the lens device 10 is affected as little as possible.

[0048] 2 and 3, a first stepped hole 111 is provided in the first barrel 110, and each of the first lenses 120 is received in a stepped hole wall of the first stepped hole 111, a second stepped hole 211 is provided in the second barrel 210, and each of the second lenses 220 is received in a stepped hole wall of the second stepped hole 211, and a receiving groove 212 communicating with the second stepped hole 211 is further provided in the second barrel 210, and the prism 300 is received in the receiving groove 212. In this way, the first lenses 120, the second lenses 220, and the prism 300 are mounted.

[0049] 2 to 5, 8, and 9, the second barrel 210 is provided with a notch 213, and the first barrel 110 is accommodated in the notch 213, thereby facilitating compact installation of the lens device 10. Specifically, a plurality of shading sheets 420 are further provided within the first lens group 100 and the second lens group 200, and each shading sheet 420 is attached between two adjacent lenses. At the same time, the plurality of shading sheets 420 are provided with cut edges adaptively following each lens. Furthermore, an optical lens 230 is further provided within the second lens group 200, and the optical lens 230 is used to confine each second lens 220 within the second barrel 210.

[0050] It should be noted that the above is merely an embodiment of the present invention, and those skilled in the art may make modifications without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. [Explanation of symbols]

[0051] 10 lens device, 20 display screen, 21 black frame, 22 display area, 23 lens aperture, 30 housing 100 first lens group, 110 first lens barrel, 111 first stepped hole, 120 first lens, 121 1-1 lens, 122 1-2 lens, 123 1-3 lens, 101 first cut edge, 102 second cut edge 200 second lens group, 210 second lens barrel, 211 second stepped hole, 212 accommodation groove, 213 notch, 220 second lens, 221 2-1 lens, 222 2-2 lens, 201 third cut edge, 202 fourth cut edge, 230 optical lens 300 prism, 310 first optical surface, 311 aspheric surface, 320 second optical surface, 330 third optical surface 410 Adhesive, 420 Light blocking sheet

Claims

1. 1. A lens device comprising: the lens device comprises a first lens group, a second lens group, and a prism, the optical axis of the first lens group and the optical axis of the second lens group are disposed so as to form an included angle, the optical path of the first lens group is disposed closer to the object side than the optical path of the second lens group, and the prism is disposed between the first lens group and the second lens group and is used to fold the optical path; A lens device, wherein at least one of the first lens group and the second lens group has a cut edge.

2. 2. The lens device according to claim 1, wherein the optical axis of the first lens group and the optical axis of the second lens group are disposed perpendicular to each other.

3. 2. The lens device according to claim 1, wherein the first lens group includes a first barrel and a plurality of first lenses provided within the first barrel, the second lens group includes a second barrel and a plurality of second lenses provided within the second barrel, the prism is provided within the second barrel, and the first barrel is bonded and connected to the second barrel with an adhesive so that the optical axes of the first lens group and the second lens group form a predetermined included angle.

4. 4. The lens device according to claim 3, wherein at least one of the first lenses has a first cut edge and a second cut edge that are arranged opposite to each other, and at least one of the second lenses has a third cut edge and a fourth cut edge that are arranged opposite to each other.

5. 4. The lens device according to claim 3, wherein a first step hole is provided within the first lens barrel, and each of the first lenses is accommodated in a corresponding step hole wall of the first step hole; a second step hole is provided within the second lens barrel, and each of the second lenses is accommodated in a corresponding step hole wall of the second step hole; the second lens barrel is further provided with a storage groove communicating with the second step hole, and the prism is accommodated within the storage groove.

6. 4. The lens device according to claim 3, wherein the second barrel has a notch, and the first barrel is accommodated in the notch.

7. 4. The lens device according to claim 3, wherein three first lenses are provided and two second lenses are provided.

8. 8. The lens device according to claim 1, wherein the prism is a planar prism or an aspherical prism.

9. An electronic device comprising a housing, a display screen, and a lens device according to any one of claims 1 to 8, 1. An electronic device, wherein the optical axis of the first lens group is perpendicular to the display screen and is provided close to an inner wall of the display screen and an inner wall of the housing.

10. 10. The electronic device according to claim 9, wherein the electronic device is a mobile phone.

Images