CN115396574A - Lens module and electronic equipment - Google Patents
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- CN115396574A CN115396574A CN202210994451.6A CN202210994451A CN115396574A CN 115396574 A CN115396574 A CN 115396574A CN 202210994451 A CN202210994451 A CN 202210994451A CN 115396574 A CN115396574 A CN 115396574A
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Abstract
The application provides a lens module and an electronic device. The lens module includes: the optical imaging device comprises a lens assembly, a first light turning piece and an image sensor; the lens component is used for receiving light rays and transmitting the light rays; the first light turning piece is positioned at one side of the lens component and used for receiving the light rays transmitted by the lens component and changing the transmission path of the light rays; the image sensor is located on a side of the first light turning member away from the lens assembly and used for receiving light emitted by the first light turning member, and at least part of the image sensor is inclined relative to an optical axis of the lens assembly. The application provides a lens module, through at least some optical axis slopes that compare in lens subassembly of image sensor have reduced the thickness of lens module.
Description
Technical Field
The application relates to the field of cameras, in particular to a lens module and electronic equipment.
Background
With the development of science and technology, electronic devices with a photographing function are widely used. The electronic device generally has a lens module to realize a photographing function. In order to enhance the photographing experience of the electronic device, the lens module of the electronic device is usually a periscopic lens module. In order to improve the photographing quality of the periscopic lens module, the size of the image sensor in the lens module is large, and the large-size image sensor enables the thickness of the electronic equipment to be thick, so that the market competitiveness of the electronic equipment is reduced.
Disclosure of Invention
In a first aspect, an embodiment of the present application provides a lens module, which includes:
a lens assembly for receiving light and transmitting the light;
the first light turning piece is positioned on one side of the lens component and used for receiving the light rays transmitted by the lens component and changing the transmission path of the light rays; and
the image sensor is positioned on one side, away from the lens assembly, of the first light turning piece and used for receiving light rays emitted by the first light turning piece, and at least part of the image sensor is inclined relative to the optical axis of the lens assembly.
In a second aspect, the present application further provides an electronic device, including:
the lens module according to the first aspect; and
the equipment main body is used for bearing the lens module.
In the lens module provided by the embodiment of the application, at least part of the image sensor is inclined compared with the optical axis of the lens component, so that the space size occupied by the image sensor in the thickness direction of the lens module is reduced, and the thickness of the lens module is reduced. In addition, the lens module further comprises a first light turning piece, and light rays emitted by the first light turning piece can enter the image sensor, so that the image sensor can still form images even if the image sensor is inclined relative to the optical axis. When the lens module provided by the embodiment of the application is applied to the electronic equipment, the thickness of the electronic equipment can be reduced, and further the market competitiveness is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 isbase:Sub>A schematic cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
Fig. 3 is a schematic view of an electronic device in a folded state according to another embodiment of the present application.
Fig. 4 is a schematic view of the electronic device shown in fig. 3 in a flattened state.
Fig. 5 is a cross-sectional view taken along line B-B of fig. 4.
Fig. 6 is a schematic structural diagram of a lens module according to an embodiment of the present application.
FIG. 7 is a schematic cross-sectional view taken along line C-C of FIG. 6 in one embodiment.
Fig. 8 is a schematic view illustrating an image sensor in the lens module of fig. 7 tilted with respect to an optical axis.
Fig. 9 is a schematic cross-sectional view taken along line C-C of fig. 6 in another embodiment.
Fig. 10 is a schematic view of light transmission in an embodiment of the lens module provided in the embodiment of fig. 6.
Fig. 11 is a schematic view of light transmission in another embodiment of the lens module according to the embodiment of fig. 6.
Fig. 12 is a schematic structural diagram of a lens module according to another embodiment of the present application.
Fig. 13 is a schematic cross-sectional view taken along line D-D of fig. 12.
Reference numerals: a lens module 10; a lens assembly 11; an optical axis 111; a first light turning member 12; a first surface 121; a second surface 122; a third surface 123; an image sensor 13; a flexible substrate 131; a light sensing unit 132; a centerline 133; a first fixing member 14; a support 15; a second fixing member 16; a second light turning member 17; a housing 18; an incident light part 181; an apparatus main body 20; a rear cover 21; a light inlet portion 211; a middle frame 22; a screen 23; a light-transmitting portion 231; a housing space 24; a folding member 25; an accommodating space 26; an electronic device 1.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure; fig. 2 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1. The electronic device 1 may be, but not limited to, a device having a photographing function, such as a foldable mobile phone, a non-foldable mobile phone, a tablet Computer, a notebook Computer, a palm Computer, a Personal Computer (PC), a Personal Digital Assistant (PDA), a Portable Media Player (PMP), and the like. The electronic device 1 includes a lens module 10, and the lens module 10 is a periscopic lens module. The lens module 10 may be, but not limited to, a rear camera module or a front camera module. In the schematic diagram of the embodiment, the electronic device is an unfolded mobile phone, the lens module is a periscopic lens module, and the lens module 10 is a rear camera module.
The electronic device 1 further includes a device body 20, and the device body 20 is used for carrying the lens module 10. The device body 20 includes, but is not limited to, a rear cover 21 (also referred to as a battery cover, or housing) of the electronic device 1; or a middle frame 22 of the electronic device 1; or the rear cover 21 and the middle frame 22 of the electronic device 1; or the rear cover 21, the middle frame 22, the screen 23, and the like of the electronic device 1, which is not limited herein. In the schematic diagram of the present embodiment, the device body 20 of the electronic device 1 is illustrated as including the rear cover 21, the middle frame 22 and the screen 23, and it should be understood that the electronic device 1 and the lens module 10 provided in the embodiments of the present application should not be limited thereto. The middle frame 22 and the rear cover 21 form a receiving space 24 for receiving the lens module 10. The rear cover 21 has a light inlet portion 211 for light to enter the lens module 10. The screen 23 is disposed on a side of the middle frame 22 away from the rear cover 21. In the schematic diagram of the present embodiment, in the cartesian coordinate system, the width direction of the electronic device 1 is the X direction, the length direction of the electronic device 1 is the Y direction, and the thickness direction of the electronic device 1 is the Z direction. In the present embodiment, the lens module 10 is schematically described as a rear camera. When the lens module 10 is applied to the electronic device 1, the lens module 10 may also be a front camera. When the lens module 10 is a front camera, the screen 23 has the light inlet portion 211. It should be understood that the above description of the electronic device 1 is only a description of an application scenario of the lens module 10, and should not be construed as limiting the lens module 10 provided in the present application.
In the present embodiment, please refer to fig. 1 and fig. 2, the lens module 10 is carried on the device main body 20, and a thickness direction of the lens module 10 is the same as or approximately the same as a thickness direction of the electronic device 1; the length direction of the lens module 10 is the same as or approximately the same as the width direction of the electronic device 1; the width direction of the lens module 10 is the same as or approximately the same as the length direction of the electronic device 1. It is understood that in other embodiments, the thickness direction of the lens module 10 is the same as, or approximately the same as, the thickness direction of the electronic device 1; the length direction of the lens module 10 may be the length direction of the electronic device 1, or other directions (for example, the length direction of the lens module 10 forms a certain included angle with the length direction of the electronic device 1, for example, but not limited to, 15 °, 20 °, 30 °, or 55 °.
Referring to fig. 3, 4 and 5, fig. 3 is a schematic view illustrating an electronic device according to another embodiment of the present application in a folded state; FIG. 4 is a schematic view of the electronic device shown in FIG. 3 in a flattened state; fig. 5 is a schematic cross-sectional view taken along line B-B in fig. 4. In the present embodiment, the electronic device 1 is a foldable electronic device, has a flat state and a folded state, and can be switched from the flat state to the folded state and from the folded state to the flat state. In the present embodiment, the flat state means that the two opposing portions of the electronic apparatus 1 are in a flat or nearly flat state. The folded state is a state in which two opposing portions of the electronic apparatus 1 are bent and are disposed opposite to each other.
The electronic device 1 includes a device body 20 and a lens module 10. The apparatus body 20 is used for carrying the lens module 10. In the schematic diagram of the present embodiment, the device main body 20 of the electronic device 1 is exemplified by including two middle frames 22, a folding member 25, and a foldable screen 23 carried on the middle frames 22, and it should be understood that the device main body 20 of the electronic device 1 provided in the embodiments of the present application is not limited thereto. The middle frame 22 and the screen 23 form an accommodating space 26 for accommodating the lens module 10. The screen 23 has a light-transmitting portion 231 for light to enter the lens module 10. The foldable screen 23 may be, but not limited to, a foldable display screen, a foldable touch display screen, or any other foldable member with corresponding functions. When the two middle frames 22 are in the folded state, the screen 23 is also in the folded state; when the two middle frames 22 are in the flattened state, the screen 23 is also in the flattened state. In one embodiment, the screen 23 may be folded or flattened with the two middle frames 22. Specifically, the screen 23 may be folded as the two middle frames 22 are folded, and may be flattened as the two middle frames 22 are unfolded. In another embodiment, the two middle frames 22 may be folded or flattened with the screen 23. Specifically, the two middle frames 22 may be folded as the screen 23 is folded, and may be flattened as the screen 23 is flattened. Whether the two middle frames 22 drive the screen 23 to be folded or unfolded or not is not limited, whether the screen 23 drives the two middle frames 22 to be folded or unfolded or not is not limited, and as long as the requirement that when the two middle frames 22 are in the folded state, the screen 23 is also in the folded state is met; when the two middle frames 22 are in the flat state, the screen 23 is also in the flat state.
When the electronic device 1 is in a flattened state, the screen 23 is flattened, and light can enter the lens module 10 through the light-transmitting portion 231; when the electronic device 1 is in a folded state, the screen 23 is folded, and light cannot enter the light-transmitting portion 231, that is, cannot enter the lens module 10.
In the present embodiment, the lens module 10 is schematically described as a front camera. When the lens module 10 is applied to the foldable electronic device 1, the lens module 10 may also be a rear camera. When the lens module 10 is a rear camera, the middle frame 22 has the light-transmitting portion 231. It should be understood that the above description of the electronic device 1 is only a description of an application scenario of the lens module 10, and should not be construed as limiting the lens module 10 provided in the present application.
Compared to the related art in which the optical axes 111 of the lens module 10 and the lens element 11 are perpendicular, in the lens module 10 provided in the present embodiment, at least a portion of the image sensor 13 is inclined with respect to the optical axis 111 of the lens element 11 (see fig. 6 and 7), so that the height of the image sensor 13 is reduced, and the thickness of the lens module 10 is reduced. When the lens module 10 provided in the embodiment of the present application is applied to the electronic device 1, the thickness of the device body 20 can be designed to be smaller, so as to reduce the overall thickness of the electronic device 1 and improve the competitiveness of the electronic device 1.
In this embodiment, the lens module 10 is a telephoto camera, the thickness of the lens module 10 is small, and when the lens module 10 is applied to the foldable electronic device 1 or the non-foldable electronic device 1, the overall thickness of the electronic device 1 can be small. In addition, the lens module 10 further includes a first light turning member 12, and light emitted from the first light turning member 12 can enter the image sensor 13, so that the image sensor 13 can still form an image even when the image sensor 13 is inclined with respect to the optical axis, and thus the lens module 10 provided in the embodiment of the present application can still form an image. In other words, the original function of the lens module 10 is not affected. When the lens module 10 is a telephoto lens, the user experience of telephoto is not affected.
Specifically, the thickness of the lens module 10 is reduced in a specific manner as described below.
Referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of a lens module according to an embodiment of the present disclosure; FIG. 7 is a schematic cross-sectional view taken along line C-C of FIG. 6 in one embodiment. In the present embodiment, the lens module 10 includes a lens assembly 11, a first light turning member 12, and an image Sensor (Sensor) 13. The lens assembly 11 is used for receiving light and transmitting the light. The first light turning member 12 is located at one side of the lens assembly 11, and is used for receiving the light emitted from the lens assembly 11 and changing the transmission path of the light. The image sensor 13 is located at a side of the first light turning member 12 facing away from the lens assembly 11, and is configured to receive the light emitted from the first light turning member 12. At least part of the image sensor 13 is tilted with respect to the optical axis 111 of the lens assembly 11. At least a portion of the image sensor 13 is tilted with respect to the optical axis 111 of the lens assembly 11, which means that the at least a portion is not perpendicular to the optical axis 111 and the at least a portion is not parallel to the optical axis 111.
The lens assembly 11 is a combination of a plurality of lenses for receiving light, and may be, but not limited to, converging or focusing the light, etc. In the illustration of the present embodiment, the lens assembly 11 is illustrated as including three lenses, and it should be understood that the lens assembly 11 provided in the embodiments of the present application should not be limited thereto. Wherein the lens assembly 11 has an optical axis 111. The optical axis 111 is a line passing through the center of the lens assembly 11 in a direction in which the lens assembly 11 is directed to the image sensor 13.
The first light turning member 12 receives the light emitted from the lens assembly 11 and changes the transmission path of the light. Specifically, in this embodiment, the first light turning member 12 is a prism, and changes the transmission path of the light emitted from the lens assembly 11 by refraction of the prism and reflection of the inner surface, and emits the light to the image sensor 13. It is understood that in other embodiments, the first light turning element 12 is a combination of plane mirrors, and reflects light rays through the plane mirrors to change the transmission path of the light rays emitted from the lens assembly 11 and reflect the light rays to the image sensor 13.
Wherein, a transmission path of the light ray exiting from the lens assembly 11 to the image sensor 13 via the first light turning member 12 is greater than a distance between the lens assembly 11 and the image sensor 13. In other words, the lens assembly 11 in this embodiment extends the path of the light compared to the case where the first light turning member 12 is not provided, and therefore, the lens assembly 11 has a longer focal length.
The image sensor 13 is configured to receive the light emitted from the first light turning member 12, and convert an optical signal of the light into an electrical signal for imaging.
In the related art, the image sensor 13 is vertically disposed in the lens module 10, that is, the optical axis 111 of the lens assembly 11 is perpendicular to the surface of the image sensor 13 facing the lens assembly, resulting in a thicker thickness of the lens module 10, that is, a larger dimension of the lens module 10 in the Z direction.
Compared with the related art, in the present embodiment, at least a portion of the image sensor 13 is tilted with respect to the optical axis 111 of the lens assembly 11, so that the image sensor 13 occupies more space in the X direction, and further occupies less space in the Z direction, so as to reduce the size of the image sensor 13 in the Z direction of the lens module 10, and thus reduce the thickness of the lens module 10. In one embodiment, at least a portion of the image sensor 13 is tilted with respect to the optical axis 111 of the lens assembly 11 and is tilted in a direction away from the lens assembly 11. In another embodiment, the image sensor 13 is at least partially tilted with respect to the optical axis 111 of the lens assembly 11 and tilted towards the lens assembly 11.
In addition, since at least a portion of the image sensor 13 is tilted with respect to the optical axis 111 of the lens assembly 11, it is necessary to change the transmission path of the light passing through the lens assembly 11, in this embodiment, the first light turning member 12 is integrally disposed between the lens assembly 11 and the image sensor 13, so that the light passing through the lens assembly 11 enters the image sensor 13 after being reflected twice on the first light turning member 12, and the number of reflections and refractions required to be generated when the light passing through the lens assembly 11 is transmitted to the image sensor 13 is reduced, thereby reducing the attenuation of the light caused by the reflections and refractions.
In summary, in the lens module 10 provided in the present embodiment, at least a portion of the image sensor 13 is inclined with respect to the optical axis 111 of the lens assembly 11, so as to reduce the size of the space occupied by the image sensor 13 in the thickness direction of the lens module 10, thereby reducing the thickness of the lens module 10. In addition, the lens module 10 further includes a first light turning member 12, and light emitted from the first light turning member 12 can enter the image sensor 13, so that the image sensor 13 can still form an image even when the image sensor 13 is tilted with respect to the optical axis. When the lens module 10 provided by the embodiment of the application is applied to an electronic device, the thickness of the electronic device can be reduced, and further the market competitiveness is improved.
Referring to fig. 8, fig. 8 is a schematic view illustrating an image sensor in the lens module of fig. 7 tilted with respect to an optical axis. In the present embodiment, the at least part of the image sensor 13 is inclined with respect to the optical axis 111 by an angle α 1 Satisfies the following conditions: alpha is not more than 30 degrees 1 ≤80°。
In particular, α 1 And may be, but is not limited to, 30 °, or 35 °, or 40 °, or 45 °, or 50 °, or 55 °, or 60 °, or 65 °, or 70 °, or 75 °, or 80 °, etc.
Under the condition that the size of the image sensor 13 is fixed, the thickness of the lens module 10 and the angle α of the at least part of the image sensor 13 inclined with respect to the optical axis 111 are the same 1 And (4) correlating. In general, α 1 The larger the thickness of the lens module 10 is; alpha is alpha 1 The smaller the thickness of the lens module 10 is. However, if said angle α is 1 Is too large (e.g., alpha) 1 > 80 °), i.e., the angle between the optical axis 111 and at least the portion of the image sensor 13 that is inclined is too large, so that the size of the image sensor 13 in the thickness direction (Z direction) of the lens module 10 is too small to be reduced, thereby making the thickness reduction of the lens module 10 inconspicuous. If said angle alpha is 1 Too small (e.g. alpha) 1 < 30 °), that is, the included angle between the optical axis 111 and at least a portion of the image sensor 13 that is inclined is too small, and the thickness of the lens module 10 is small, so that the light is difficult to enter the image sensor 13 through the first light turning member 12 or enter the image sensor 13 at a preferred angle, which easily results in too low imaging quality or even no imaging. Therefore, in the present embodiment, the angle α 1 Satisfies the following conditions: alpha is more than or equal to 30 degrees 1 80 degrees or less, on one hand, the thickness of the lens module 10 can be smaller, and on the other hand, the imaging quality of the image sensor 13 can be higher.
Referring to fig. 8 again, when the light beam with the changed transmission path of the first light turning member 12 is incident on the image sensor 13, an included angle α between the light beam and the surface of the image sensor 13 is formed 2 Satisfies the following conditions:90°-3°≤α 2 ≤90°+3°。
in particular, α 2 But may not be limited to 90 ° ± 3 °, or, 90 ° ± 2.7 °, or, 90 ° ± 2.5 °, or, 90 ° ± 2.2 °, or, 90 ° ± 2 °, or, 90 ° ± 1.8 °, or, 90 ° ± 1.5 °, or, 90 ° ± 1.2 °, or, 90 ° ± 1 °, or, 90 ° ± 0.8 °, or, 90 ° ± 0.5 °, or, 90 ° ± 0.2 °, or, 90 °, etc.
The dotted line with an arrow in fig. 8 represents an illustration of the transmission path of light in the lens module 10. It should be noted that, in fig. 8, a plane of the image sensor 13 facing the lens assembly 11 is illustrated, and a plane of the image sensor facing the lens assembly 11 is not limited.
To ensure the imaging quality of the image sensor 13, the light emitted through the first light turning member 12 needs to be incident approximately perpendicularly to the image sensor 13. If the deviation of the light incident on the image sensor 13 is too large, the light incident on the image sensor 13 may cause distortion, blurring, or ghosting of the image. In the embodiment of the present application, the included angle α between the light ray and the surface of the image sensor 13 2 Satisfies the following conditions: alpha is more than or equal to 90 degrees and 3 degrees 2 90 DEG +3 DEG or less so that the imaging quality of the image sensor 13 is high.
In one embodiment (see fig. 8), when the inclination angles of the image sensor 13 relative to the optical axis 111 are the same, the included angle α between the light incident on the image sensor 13 and the surface of the image sensor 13 is 2 Equal, and the angle α 2 Satisfies the following conditions: alpha is more than or equal to 90 degrees and 3 degrees 2 ≤90°+3°。
In another embodiment (see fig. 11), when the image sensor 13 is a curved structure, the angle α between the light incident on each part of the surface of the image sensor 13 and the surface of the image sensor 13 is α 2 Having a plurality of values, but a plurality of said included angles alpha 2 All satisfy: alpha is more than or equal to 90 degrees and 3 degrees 2 ≤90°+3°。
Referring to fig. 7 again, in one embodiment, the tilt angles of the image sensors 13 are consistent with those of the optical axis 111. The lens module 10 further includes a first fixing member 14 and/or a supporting member 15. The first fixing member 14 is disposed at one end of the image sensor 13, and is used for fixing the image sensor 13. The supporting member 15 is disposed on a side of the image sensor 13 away from the first light turning member 12, and is used for supporting the image sensor 13.
In one embodiment, the image sensor 13 has an array of photosensitive units, each of which is inclined at an angle corresponding to the optical axis 111.
The image sensor 13 is entirely tilted in a direction away from the first light turning member 12 to reduce the size of the image sensor 13 in the thickness direction of the lens module 10. Since the image sensor 13 is tilted with respect to the optical axis 111, the first fixing member 14 fixes one end of the image sensor 13, so that the image sensor 13 is fixed more stably. And/or, the supporting element 15 is disposed on a side of the image sensor 13 facing away from the first light turning member 12, so that the image sensor 13 is fixed more stably.
Referring to fig. 9, fig. 9 is a schematic cross-sectional view taken along line C-C of fig. 6 according to another embodiment. In this embodiment, the image sensor 13 includes a flexible base 131 and a plurality of photosensitive units 132. The flexible substrate 131 is disposed in a curved manner. The plurality of light sensing units 132 are distributed on the surface of the flexible substrate 131 near the first light turning member 12 in an array for receiving light.
In this embodiment, the flexible substrate 131 is disposed in a curved manner, that is, the surface of the flexible substrate 131 facing the first light turning member 12 is a curved surface, so that the image sensor 13 is disposed in a curved manner as a whole, thereby reducing the size of the image sensor 13 in the thickness direction (Z direction) of the lens module 10. The plurality of light sensing units 132 are configured to receive the light and convert the light signals into electrical signals for imaging. It should be noted that fig. 9 does not limit the number of the photosensitive units.
Referring to fig. 7, 8 and 9 again, in the present embodiment, the dimension d of the image sensor 13 in the thickness direction of the lens module 10 satisfies: d is less than or equal to 6mm. The thickness direction of the lens module 10 is perpendicular to the optical axis 111, and the thickness direction of the lens module 10 is perpendicular to an axis (Y direction) of a lens in the lens assembly 11, that is, the thickness direction of the lens module 10 is the Z direction.
In the related art, an image sensor 13 (i.e., a camera chip) needs 1/2 ″, when the image sensor 13 is placed upright normally, the thickness of the lens module 10 is usually greater than 6.0mm, for example, 6.7mm to 6.95mm, so that the thickness of the lens module 10 is too large, which affects the application of the lens module 10 in the electronic device, and the electronic device has a large thickness and poor use experience, thereby reducing market competitiveness. The image sensor 13 is normally placed upright, which means that the image sensor 13 is perpendicular to the optical axis 111.
Compared with the related art, the image sensor 13 in the lens module 10 provided in the embodiment of the present application satisfies the following requirements in the thickness direction d of the lens module 10: d is less than or equal to 6mm. Specifically, in one embodiment, the tilt angle of the image sensor 13 relative to the optical axis 111 is consistent throughout the image sensor 13, and the tilt angle α of the image sensor 13 relative to the optical axis 111 is equal 1 Satisfies the following conditions: alpha is more than or equal to 30 degrees 1 80 ° or less so that the dimension d of the image sensor 13 in the thickness direction of the lens module 10 satisfies: d is less than or equal to 6mm, so that when the lens module 10 is applied to the electronic equipment 1, the thickness of the electronic equipment 1 can be reduced, the use experience of the electronic equipment 1 is improved, and the market competitiveness is further improved.
In another embodiment, the image sensor 13 is integrally curved such that the image sensor 13 is inclined with respect to the optical axis 111, and the image sensor 13 is inclined at various angles α with respect to the optical axis 111 1 Satisfies the following conditions: alpha is not more than 30 degrees 1 80 ° or less so that the dimension d of the image sensor 13 in the thickness direction of the lens module 10 satisfies: d is less than or equal to 6mm, so that when the lens module 10 is applied to the electronic equipment 1, the size of the electronic equipment 1 can be reducedThickness to improve the use experience of the electronic device 1, and further improve market competitiveness.
Referring to fig. 9 again, in the present embodiment, the number of the first light turning members 12 is two, and the two first light turning members 12 are symmetrically disposed about the center line 133 of the image sensor 13. Wherein the center line 133 is parallel to the optical axis 111, or the center line 133 coincides with the optical axis 111.
In this embodiment, the image sensor 13 is curved and symmetrical about the central line 133, so that the two ends of the image sensor 13, which are opposite to each other in the thickness direction of the lens module 10, are inclined at the largest angle compared with the optical axis 111, and therefore, it is necessary to correspondingly arrange one first light turning member 12 at each of the two ends of the image sensor 13, which are opposite to each other in the thickness direction of the lens module 10, so as to approximately vertically incident the light rays emitted from the lens assembly 11 of the lens onto the surface of the image sensor 13 facing the lens assembly 11 after being reflected and/or refracted, so as to ensure the imaging quality of the image sensor 13.
Referring to fig. 9 again, in the present embodiment, the lens module 10 further includes a second fixing member 16. The second fixing members 16 are disposed at two ends of the image sensor 13, and are used for fixing the image sensor 13.
In this embodiment, the second fixing members 16 are disposed at two ends of the image sensor 13 in the thickness direction of the lens module 10 to fix the image sensor 13, so that the image sensor 13 is fixed more stably.
Referring to fig. 7, 9, 10 and 11 together, fig. 10 is a schematic view illustrating optical transmission of the lens module provided in the embodiment of fig. 6 in an embodiment; fig. 11 is a schematic view of light transmission in another embodiment of the lens module according to the embodiment of fig. 6. In this embodiment, the first light turning member 12 includes a first surface 121, a second surface 122, and a third surface 123, which are sequentially bent two by two. The first surface 121 is disposed closer to the lens assembly 11 than the second surface 122 and the third surface 123. The second surface 122 is disposed closer to the image sensor 13 than the first surface 121 and the second surface 122. The third surface 123 is disposed between the first surface 121 and the second surface 122. The light rays transmitted by the lens assembly 11 enter the first light turning member 12 through the first surface 121 and are refracted. The second surface 122 is used for reflecting the light entering the first light turning member 12 from the first surface 121 and incident on the second surface 122 to the third surface 123. The third surface 123 is used for reflecting the light reflected by the second surface 122 back to the second surface 122, refracting the light through the second surface 122, and transmitting the light to the image sensor 13.
The dotted lines with arrows in fig. 10 and 11 are transmission paths of the light in the lens module 10. In this embodiment, the first light turning member 12 is a prism, such that the first light turning member 12 sequentially includes the first surface 121, the third surface 123 and the second surface 122 in a direction in which the lens assembly 11 points to the image sensor 13. The light rays passing through the lens assembly 11 enter the first light turning member 12 through the first surface 121 and are refracted. The second surface 122 is used for reflecting the light entering the first light refracting element from the first surface 121 and incident on the second surface 122 to the third surface 123. In an embodiment, the second surface 122 may be, but is not limited to, a total reflection surface or a non-total reflection surface. When the second surface 122 has a total reflection surface, the second surface 122 has a smaller light loss when reflecting the light reflected from the first surface 121, so that more light enters the image sensor 13, and the imaging quality of the image sensor 13 is better.
The third surface 123 reflects the light reflected by the second surface 122 back to the second surface 122, i.e., the third surface 123 is used for reflecting the light. The third surface 123 may be, but is not limited to, a total reflection surface or a non-total reflection surface. When the third surface 123 is a total reflection surface, the light loss of the third surface 123 when reflecting the light reflected by the second surface 122 is small, so that more light enters the image sensor 13, and the imaging quality of the image sensor 13 is good.
The third surface 123 is used for reflecting the light reflected by the second surface 122 back to the second surface 122, refracting the light through the second surface 122, and transmitting the light to the image sensor 13.
As can be seen from the above, in the present embodiment, the light entering the first light turning member 12 is refracted when entering the first light turning member 12 from the first surface 121, and is refracted when exiting from the second surface 122 of the first light turning member 12. In other words, the first light turning member 12 refracts light twice (also referred to as secondary refraction), and the first light turning member 12 is also referred to as a secondary refraction prism. In addition, first light-turning member 12 reflects on both second surface 122 and third surface 123, and thus, the first light-turning member 12 reflects twice, and thus, the first light-turning member 12 is also referred to as a secondary reflection prism.
In addition, the optical paths of the lens module 10 other than the first light turning member 12 provided in the embodiments of the present application are consistent or substantially consistent with those in the related art. In other words, the lens module 10 retains the original optical path in the related art, and uses the first light turning member 12 to perform the secondary refraction and the secondary reflection on the light, so as to satisfy the imaging requirement of the image sensor 13.
In addition, as can be seen from the effect of the first light-turning member 12 on the light, the first light-turning member 12 reflects a smaller number of times and refracts a smaller number of times. And further, the large optical loss caused by multiple reflection and multiple refraction of the light is avoided. In other words, the first light turning member 12 provided in the embodiment of the present application has smaller refractive loss and reflection loss, i.e., smaller optical loss.
In other embodiments, the first light turning element 12 may be two plane mirrors, one of which is disposed at the position of the second surface 122 and the other of which is disposed at the position of the third surface 123. The one plane mirror is used to reflect the light rays transmitted through the lens assembly 11 to the other plane mirror, and the other plane mirror reflects the light rays reflected by the one plane mirror to the image sensor 13 for imaging.
In addition, when the inclination angles of the image sensor 13 with respect to the optical axis 111 are consistent, all the light rays passing through the lens assembly 11 exit to the image sensor 13 through the first light turning member 12. When the surface of the image sensor 13 facing the lens assembly 11 is a curved surface structure, that is, the image sensor 13 includes a flexible base material 131 and a plurality of photosensitive units 132, when the flexible base material 131 is disposed in a curved manner, a portion of the light rays passing through the lens assembly 11 and far away from the optical axis 111 is emitted to the image sensor 13 through the first light turning member 12, and another portion of the light rays close to the optical axis 111 is directly emitted to the image sensor 13.
Referring to fig. 12 and 13, fig. 12 is a schematic structural diagram of a lens module according to another embodiment of the present disclosure; fig. 13 is a schematic cross-sectional view taken along line D-D of fig. 12. In this embodiment, the lens module 10 further includes a second light turning member 17. The second light turning member 17 is spaced apart from the lens assembly 11 and is disposed away from the first light turning member 12 compared to the lens assembly 11. The second light turning member 17 is configured to receive an incident light ray, change a transmission path of the incident light ray, and transmit the light ray to the lens assembly 11.
In this embodiment, the light enters the lens module 10 through the second light turning member 17, changes the transmission path under the action of the second light turning member 17, enters the lens assembly 11, then exits to the first light turning member 12 through the lens assembly 11, and finally changes the transmission path through the first light turning member 12 to be approximately vertically incident to the image sensor 13 for imaging. In this embodiment, the second light turning member 17 changes the light transmitted in the Z direction into the light transmitted in the X direction, and reduces the transmission path of the light in the Z direction, thereby reducing the size of the lens module 10 in the Z direction, i.e., reducing the thickness of the lens module 10.
In addition, the lens module 10 further includes a housing 18. The housing 18 is used for accommodating the lens assembly 11, the first light turning member 12, the image sensor 13, and the second light turning member 17. The housing 18 has a light incident portion 181. The light incident portion 181 is disposed corresponding to the second light turning member 17, and is configured to transmit the incident light to the second light turning member 17. The dotted lines with arrows in fig. 13 indicate the transmission paths of light rays in the lens module 10. In this embodiment, the housing 18 provides protection for the lens assembly 11, the first light turning member 12, the image sensor 13 and the second light turning member 17, and can prevent light from overflowing, so as to reduce light loss and improve the imaging quality of the image sensor 13.
Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present application, and that such changes and modifications are also to be considered as within the scope of the present application.
Claims (12)
1. The lens module, characterized in that, the lens module includes:
a lens assembly for receiving light and transmitting the light;
the first light turning piece is positioned on one side of the lens component and used for receiving the light rays transmitted by the lens component and changing the transmission path of the light rays; and
the image sensor is positioned on one side of the first light turning piece, which is far away from the lens component, and is used for receiving the light rays emitted by the first light turning piece, and at least part of the image sensor is inclined relative to the optical axis of the lens component.
2. The lens module as recited in claim 1, wherein the at least part of the image sensorAn angle alpha inclined compared to the optical axis 1 Satisfies the following conditions: alpha is more than or equal to 30 degrees 1 ≤80°。
3. The lens module as claimed in claim 2, wherein when the light beam of which the transmission path is changed by the first light turning member is incident on the image sensor, an included angle α between the light beam and a surface of the image sensor 2 Satisfies the following conditions: alpha is more than or equal to 90 degrees and 3 degrees 2 ≤90°+3°。
4. The lens module as claimed in claim 3, wherein the image sensors are disposed at the same inclination angle with respect to the optical axis, the lens module further comprising:
the first fixing piece is arranged at one end of the image sensor and used for fixing the image sensor; and/or
The supporting piece is arranged on one side, deviating from the first light turning piece, of the image sensor and used for supporting the image sensor.
5. The lens module as claimed in claim 2, wherein the image sensor comprises:
a flexible substrate disposed in a curved configuration; and
the photosensitive units are distributed on the surface of one side, close to the first light turning piece, of the flexible base material in an array mode and used for receiving light.
6. The lens module according to claim 4 or 5, wherein the image sensor satisfies, in a thickness direction dimension d of the lens module: d is less than or equal to 6mm, wherein the thickness direction of the lens module is perpendicular to the optical axis, and the thickness direction of the lens module is perpendicular to the axis of the lens in the lens component.
7. The lens module as claimed in claim 5, wherein the number of the first light turning members is two, and two of the first light turning members are symmetrically disposed about a center line of the image sensor, wherein the center line is parallel to the optical axis or the center line coincides with the optical axis.
8. The lens module as claimed in claim 5, wherein the lens module further comprises:
and the second fixing pieces are arranged at two ends of the image sensor and used for fixing the image sensor.
9. The lens module as claimed in claim 1, wherein the first light turning element includes a first surface, a second surface and a third surface, wherein the first surface, the second surface and the third surface are sequentially connected to each other in a two-by-two bending manner, the first surface is disposed adjacent to the lens element compared to the second surface and the third surface, the second surface is disposed adjacent to the image sensor compared to the first surface and the second surface, and the third surface is disposed between the first surface and the second surface;
the light rays transmitted by the lens component enter the first light turning piece through the first surface and are refracted; the second surface is used for reflecting the light rays which enter the first light turning piece from the first surface and are incident on the second surface to the third surface; the third surface is used for reflecting the light rays reflected by the second surface back to the second surface, refracting the light rays through the second surface and transmitting the light rays to the image sensor.
10. The lens module as claimed in claim 1, wherein the lens module further comprises:
and the second light turning piece is arranged at an interval with the lens assembly and is arranged to depart from the first light turning piece compared with the lens assembly, and the second light turning piece is used for receiving incident light, changing the transmission path of the incident light and transmitting the light to the lens assembly.
11. The lens module as claimed in claim 10, wherein the lens module further comprises:
the housing is used for accommodating the lens assembly, the first light turning piece, the image sensor and the second light turning piece, and the housing is provided with an incident part which is arranged corresponding to the second light turning piece and is used for transmitting the incident light to the second light turning piece.
12. An electronic device, characterized in that the electronic device comprises:
a lens module as claimed in any one of claims 1-11; and
the equipment main body is used for bearing the lens module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210994451.6A CN115396574B (en) | 2022-08-18 | Lens module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210994451.6A CN115396574B (en) | 2022-08-18 | Lens module and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115396574A true CN115396574A (en) | 2022-11-25 |
| CN115396574B CN115396574B (en) | 2024-07-05 |
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