CN115396574B - Lens module and electronic equipment - Google Patents
Lens module and electronic equipment Download PDFInfo
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- CN115396574B CN115396574B CN202210994451.6A CN202210994451A CN115396574B CN 115396574 B CN115396574 B CN 115396574B CN 202210994451 A CN202210994451 A CN 202210994451A CN 115396574 B CN115396574 B CN 115396574B
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Abstract
The application provides a lens module and electronic equipment. The lens module includes: a lens assembly, a first light turning member and an image sensor; the lens component is used for receiving light rays and transmitting the light rays; the first light turning component is positioned at one side of the lens component and is used for receiving the light rays transmitted by the lens component and changing the transmission path of the light rays; the image sensor is positioned on one side of the first light turning piece, which is away from the lens component, and is 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 component. The application provides a lens module, wherein the thickness of the lens module is reduced by at least partial inclination of the image sensor compared with the optical axis of the 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 technology, electronic devices with photographing function are increasingly used. The electronic device generally has a lens module to implement a photographing function. In order to enhance the photographing experience of an electronic device, a lens module of the electronic device is usually a periscope lens module. In order to improve the photographing quality of the periscope type lens module, the size of the image sensor in the lens module is large, and the thickness of the electronic equipment is thick due to the large-size image sensor, 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, including:
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 is 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 away from the lens component, and is 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 component.
In a second aspect, an embodiment of the present application further provides an electronic device, including:
the lens module of the first aspect; and
The device 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 assembly, 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 component, and light rays emitted by the first light turning component can enter the image sensor, so that the image sensor can image even when the image sensor is inclined compared with the optical axis. When the lens module provided by the embodiment of the application is applied to electronic equipment, the thickness of the electronic equipment can be reduced, and the market competitiveness is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a schematic cross-sectional view taken along line A-A in 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 schematic cross-sectional view taken along line B-B in fig. 4.
Fig. 6 is a schematic structural diagram of a lens module according to an embodiment of the application.
FIG. 7 is a schematic cross-sectional view of FIG. 6 along line C-C in an embodiment.
Fig. 8 is a schematic diagram illustrating an inclination of the image sensor in the lens module according to the embodiment of fig. 7 compared to the optical axis.
Fig. 9 is a schematic cross-sectional view of fig. 6 along line C-C in another embodiment.
Fig. 10 is a schematic diagram of light transmission of the lens module according to the embodiment of fig. 6.
Fig. 11 is a schematic diagram of light transmission of the lens module according to another embodiment of the present invention.
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 of fig. 12 taken along line D-D.
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 photosensitive unit 132; a center line 133; a first fixing member 14; a support 15; a second fixing member 16; a second light turning member 17; a housing 18; a light entrance portion 181; an apparatus main body 20; a rear cover 21; a light inlet 211; a middle frame 22; a screen 23; a light transmitting portion 231; an accommodating space 24; a folding member 25; an accommodating space 26; an electronic device 1.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" or "implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may 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 application; fig. 2 is a schematic cross-sectional view taken along line A-A in fig. 1. The electronic device 1 may be, but is not limited to, a device with 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 (Personal Computer, PC), a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a Portable media player (Portable MEDIA PLAYER, PMP), etc. The electronic device 1 includes a lens module 10, and the lens module 10 is a periscope type lens module. The lens module 10 may be, but is not limited to, a rear camera module, or a front camera module. In the schematic diagram of this embodiment, the electronic device is a non-folding mobile phone, the lens module is a periscope lens module, and the lens module 10 is a rear camera module.
The electronic device 1 further includes a device main body 20, where the device main body 20 is configured to carry 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 center 22 of the electronic device 1; or a rear cover 21 and a middle frame 22 of the electronic device 1; or the rear cover 21, the middle frame 22, the screen 23, etc. of the electronic device 1 are not limited herein. In the schematic diagram of the present embodiment, the device main body 20 of the electronic device 1 includes the rear cover 21, the middle frame 22 and the screen 23 as an example, and it should be understood that the electronic device 1 and the lens module 10 provided in the embodiment of the present application should not be limited. The middle frame 22 and the rear cover 21 form an accommodating space 24 for accommodating the lens module 10. The rear cover 21 has a light inlet 211 for allowing light to enter the lens module 10. The screen 23 is arranged on the side of the middle frame 22 facing 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 be a front camera. When the lens module 10 is a front camera, the screen 23 has the light inlet 211. It should be understood that the above description of the electronic device 1 is merely an introduction of the application scenario of the lens module 10, and should not be construed as limiting the lens module 10 provided by the present application.
In this embodiment, referring to fig. 1 and 2, the lens module 10 is mounted on the device main body 20, and 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 is the same 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 will be appreciated 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 angle with the length direction of the electronic device 1, for example, but not limited to 15 °,20 °,30 °,55 °, etc.).
Referring to fig. 3, fig. 4 and fig. 5, fig. 3 is a schematic diagram of an electronic device in a folded state according to another embodiment of the application; 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 apparatus 1 is a foldable electronic apparatus having a flattened state and a folded state, and is switchable from the flattened state to the folded state and from the folded state to the flattened state. In the present embodiment, the flattened state means that two opposing portions of the electronic apparatus 1 are in a flattened or approximately flattened state. The folded state refers to a state in which two opposing portions of the electronic apparatus 1 are folded and disposed opposite each other.
The electronic device 1 includes a device main body 20 and a lens module 10. The device main 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 illustrated by taking the example that the device main body 20 includes two middle frames 22, a folding member 25 and a foldable screen 23 carried by the middle frames 22 as an example, and it should be understood that the device main body 20 of the electronic device 1 provided in the embodiment of the present application is not limited. 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 allowing light to enter the lens module 10. The foldable screen 23 may be, but is not limited to, a foldable display screen, a foldable touch display screen, or the like, which has various foldable components 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 along with the folding of the two middle frames 22, and may be flattened along with the flattening of the two middle frames 22. 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. The present application does not limit whether the two middle frames 22 drive the screen 23 to fold or flatten, nor does it limit whether the screen 23 drives the two middle frames 22 to fold or flatten, as long as it is satisfied that when the two middle frames 22 are in a folded state, the screen 23 is also in a folded state; when the two middle frames 22 are in the flattened state, the screen 23 is also in the flattened state.
When the electronic device 1 is in the 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 the folded state, the screen 23 is folded, and the light cannot enter the light-transmitting portion 231, i.e., 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 merely an introduction of the application scenario of the lens module 10, and should not be construed as limiting the lens module 10 provided by the present application.
Compared to the related art in which the lens module 10 is perpendicular to the optical axis 111 of the lens assembly 11, the image sensor 13 in the lens module 10 according to the embodiment of the application is at least partially inclined with respect to the optical axis 111 of the lens assembly 11 (see fig. 6 and 7), so that the height of the image sensor 13 is reduced, thereby reducing the thickness of the lens module 10. 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 main body 20 can also 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, and the thickness of the lens module 10 is smaller, so that 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 made smaller. In addition, the lens module 10 further includes a first light turning element 12, and the light emitted from the first light turning element 12 can enter the image sensor 13, so that the image sensor 13 can still image even when the optical axis is inclined compared with the optical axis, and therefore, the lens module 10 provided by the embodiment of the application can still image. In other words, the original functions of the lens module 10 are not affected. When the lens module 10 is a tele lens, the experience of the user on the tele is not affected.
Specifically, a specific embodiment of the lens module 10 for reducing the thickness dimension will be described in detail later.
Referring to fig. 6 and fig. 7, fig. 6 is a schematic structural diagram of a lens module according to an embodiment of the application; FIG. 7 is a schematic cross-sectional view of FIG. 6 along line C-C in an embodiment. In this 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 configured to receive light and transmit the light. The first light turning element 12 is located at one side of the lens assembly 11, and is configured to receive the light transmitted by the lens assembly 11 and change the transmission path of the light. The image sensor 13 is located at a side of the first light turning member 12 away from the lens assembly 11, and is configured to receive light emitted by 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. Wherein at least a portion of the image sensor 13 is tilted with respect to the optical axis 111 of the lens assembly 11, 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 rays, and may be, but not limited to, converging or focusing the light rays, etc. In the illustration of the present embodiment, the lens assembly 11 is illustrated by taking the example that includes three lenses, and it should be understood that the limitation of the lens assembly 11 provided in the embodiment of the present application should not be constructed. 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 toward the image sensor 13.
The first light turning member 12 receives the light transmitted from the lens assembly 11 and changes a transmission path of the light. Specifically, in the present embodiment, the first light turning member 12 is a prism, and the light beam transmitted by the lens assembly 11 is changed by refraction of the prism and reflection of the inner surface, and is emitted to the image sensor 13. It will be appreciated that in other embodiments, the first light turning member 12 is a plane mirror assembly, and reflects the light beam to the image sensor 13 by reflecting the light beam through the lens assembly 11 to change the transmission path of the light beam.
The transmission path of the light beam exiting from the lens assembly 11 to the image sensor 13 via the first light turning member 12 is larger than the distance between the lens assembly 11 and the image sensor 13. In other words, the lens assembly 11 in the present embodiment extends the path of the light rays as compared to the case where the first light turning member 12 is not provided, and thus, 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 element 12, and convert an optical signal of the light into an electrical signal for imaging.
In the related art, the image sensor 13 is disposed upright 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 size of the lens module 10 in the Z direction.
Compared to the related art, 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 that the image sensor 13 increases the space occupying the X direction and thus decreases the space occupying the Z direction, to decrease the size of the image sensor 13 in the Z direction of the lens module 10, thereby decreasing the thickness of the lens module 10. In an embodiment, at least part 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 inclined relative to the optical axis 111 of the lens assembly 11, it is necessary to change the transmission path of the light transmitted through the lens assembly 11, in this embodiment, by integrally disposing the first light turning member 12 between the lens assembly 11 and the image sensor 13, the light transmitted through the lens assembly 11 enters the image sensor 13 after being reflected twice on the first light turning member 12, so that the number of reflection and refraction times required to be generated for transmitting the light transmitted through the lens assembly 11 to the image sensor 13 is small, and attenuation of the light due to reflection and refraction is reduced.
In summary, in the lens module 10 according to the embodiment of the present application, 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 space size 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 image even when the optical axis is inclined compared with the optical axis. When the lens module 10 provided by the embodiment of the application is applied to electronic equipment, the thickness of the electronic equipment can be reduced, and the market competitiveness is further improved.
Referring to fig. 8, fig. 8 is a schematic diagram illustrating an inclination of the image sensor in the lens module according to the embodiment of fig. 7 compared with the optical axis. In the present embodiment, the angle α 1 by which the at least part of the image sensor 13 is inclined with respect to the optical axis 111 satisfies: alpha 1 is more than or equal to 30 degrees and less than or equal to 80 degrees.
In particular, α 1 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.
In case the size of the image sensor 13 is fixed, the thickness of the lens module 10 is related to the angle α 1 by which the at least part of the image sensor 13 is tilted with respect to the optical axis 111. In general, the larger α 1 is, the larger the thickness of the lens module 10 is; the smaller α 1 is, the smaller the thickness of the lens module 10 is. However, if the angle α 1 is too large (for example, α 1 > 80 °), that is, the angle between the optical axis 111 and at least a portion of the inclined image sensor 13 is too large, the size of the image sensor 13 in the thickness direction (Z direction) of the lens module 10 is reduced too little, and thus the thickness reduction of the lens module 10 is not significant. If the angle α 1 is too small (for example, α 1 < 30 °), that is, the angle between the optical axis 111 and at least a portion of the inclined image sensor 13 is too small, the thickness of the lens module 10 is small, so that it is difficult to make the first light turning member 12 enter the image sensor 13 or enter the first light turning member at a better angle, which easily results in too low imaging quality or even no imaging. Therefore, in the present embodiment, the angle α 1 satisfies: 30 DEG-alpha 1 DEG-80 DEG, on the one hand, the thickness of the lens module 10 can be made smaller, and on the other hand, the imaging quality of the image sensor 13 can be made higher.
Referring to fig. 8 again, when the light beam with the transmission path changed by the first light turning element 12 is incident to the image sensor 13, an included angle α 2 between the light beam and the surface of the image sensor 13 satisfies: alpha 2 is more than or equal to 90 degrees and less than or equal to 3 degrees and 90 degrees+3 degrees.
In particular, α 2 may be, but is not 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 dashed lines with arrows in fig. 8 represent an illustration of the transmission path of light rays in the lens module 10. In fig. 8, the plane of the image sensor 13 facing the lens assembly 11 is shown as a plane, and the 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 element 12 needs to be incident on the image sensor 13 approximately perpendicularly. If the deviation of the light incident on the image sensor 13 is too large, the imaging after the light is incident on the image sensor 13 may be distorted, blurred or ghost. In the embodiment of the present application, the included angle α 2 between the light and the surface of the image sensor 13 satisfies: 90 ° -3 ° - α 2 +.90 ° +3°, so that the imaging quality of the image sensor 13 is high.
In an embodiment (refer to fig. 8), when the inclination angles of the image sensor 13 are consistent throughout the optical axis 111, the included angle α 2 between the light incident on the surface of the image sensor 13 and the surface of the image sensor 13 is equal, and the included angle α 2 satisfies: alpha 2 is more than or equal to 90 degrees and less than or equal to 3 degrees and 90 degrees+3 degrees.
In another embodiment (see fig. 11), when the image sensor 13 has a curved structure, the angles α 2 between the light incident on the surface of the image sensor 13 and the surface of the image sensor 13 have a plurality of values, but the angles α 2 satisfy: alpha 2 is more than or equal to 90 degrees and less than or equal to 3 degrees and 90 degrees+3 degrees.
Referring to fig. 7 again, in an embodiment, the inclination angles of the image sensor 13 are consistent throughout the optical axis 111. The lens module 10 further comprises 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 facing away from the first light turning member 12, and is configured to support the image sensor 13.
In one embodiment, the image sensor 13 has photosensitive cells distributed in an array, and each photosensitive cell is aligned with the inclination angle of the optical axis 111.
The image sensor 13 is inclined as a whole 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 inclined with respect to the optical axis 111, the first fixing member 14 is fixed to one end of the image sensor 13, so that the image sensor 13 is fixed more stably. And/or the support member 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 more stably fixed.
Referring to fig. 9, fig. 9 is a schematic cross-sectional view of fig. 6 along line C-C in another embodiment. In this embodiment, the image sensor 13 includes a flexible substrate 131 and a plurality of photosensitive units 132. The flexible substrate 131 is disposed in a curved manner. The plurality of photosensitive units 132 are distributed on the surface of the flexible substrate 131 near the side of the first light turning member 12 in an array manner, and are used for receiving light.
In the present embodiment, the flexible substrate 131 is curved, that is, the surface of the flexible substrate 131 facing the first light turning member 12 is curved, so that the image sensor 13 is curved 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 photosensitive units 132 are used for receiving the light and converting the light signal into an electrical signal for imaging. Note that fig. 9 does not limit the number of the photosensitive units.
Referring again to fig. 7, 8 and 9, 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 the axis (Y direction) of the lens in the lens assembly 11, i.e., the thickness direction of the lens module 10 is the Z direction.
In the related art, the image sensor 13 (i.e. the camera chip) needs 1/2", when the image sensor 13 is normally placed upright, the thickness of the lens module 10 is generally greater than 6.0mm, for example, 6.7mm to 6.95mm, so that the thickness of the lens module 10 is too large, and the application of the lens module 10 in the electronic device is further affected, so that the thickness of the electronic device is large, the use experience is poor, and the market competitiveness is further reduced. Wherein the image sensor 13 is normally placed upright, meaning that the image sensor 13 is perpendicular to the optical axis 111.
Compared with the related art, the size d of the image sensor 13 in the lens module 10 in the thickness direction of the lens module 10 provided by the embodiment of the application satisfies: d is less than or equal to 6mm. Specifically, in an embodiment, the inclination angles of the image sensor 13 with respect to the optical axis 111 are consistent throughout, and the inclination angle α 1 of the image sensor 13 with respect to the optical axis 111 satisfies: 30 DEG-alpha 1 DEG-80 DEG 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 angle α 1 at which the image sensor 13 is inclined with respect to the optical axis 111 satisfies: 30 DEG-alpha 1 DEG-80 DEG 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.
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 center line 133, so that the two opposite ends of the image sensor 13 in the thickness direction of the lens module 10 are inclined at the maximum angle with respect to the optical axis 111, and therefore, one first light turning member 12 is required to be disposed at each of the opposite ends of the image sensor 13 in the thickness direction of the lens module 10, so as to reflect and/or refract the light transmitted from the lens assembly 11, and then make the light incident on the surface of the image sensor 13 facing the lens assembly 11 approximately perpendicularly, 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 the present embodiment, the second fixing members 16 are provided at both 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, fig. 9, fig. 10, and fig. 11, fig. 10 is a schematic diagram illustrating light transmission of the lens module according to an embodiment of the disclosure provided in fig. 6; fig. 11 is a schematic diagram of light transmission of the lens module according to another embodiment of the present invention. In this embodiment, the first light turning element 12 includes a first surface 121, a second surface 122 and a third surface 123 that are connected by bending in order. 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 transmitted by the lens assembly 11 enters the first light turning member 12 through the first surface 121 and is refracted. The second surface 122 is configured to reflect the light entering the first light turning element 12 from the first surface 121 and incident on the second surface 122 to the third surface 123. The third surface 123 is configured to reflect light reflected by the second surface 122 back to the second surface 122 and refract and transmit the light to the image sensor 13 via the second surface 122.
The dashed lines with arrows in fig. 10 and 11 are the transmission paths of the light rays in the lens module 10. In this embodiment, the first light turning member 12 is a prism, so 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 is directed toward the image sensor 13. Light transmitted through the lens assembly 11 enters the first light turning member 12 through the first surface 121 and is refracted. The second surface 122 is configured to reflect 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 one embodiment, the second surface 122 may be, but is not limited to, a fully reflective surface or a non-fully reflective surface. When the second surface 122 has a total reflection surface, the second surface 122 has 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 light reflected by the second surface 122 back to the second surface 122, i.e. the third surface 123 is adapted to reflect the light. Wherein the third surface 123 may be, but is not limited to, a fully reflective surface or a non-fully reflective surface. When the third surface 123 is a total reflection surface, the third surface 123 has smaller light loss when reflecting the light reflected from the second surface 122, so that more light enters the image sensor 13, and the imaging quality of the image sensor 13 is better.
The third surface 123 is configured to reflect light reflected by the second surface 122 back to the second surface 122 and refract and transmit the light to the image sensor 13 via the second surface 122.
It can be seen that, in the embodiment of the present application, the light entering the first light turning element 12 is refracted when entering the first light turning element 12 from the first surface 121, and is refracted when exiting from the second surface 122 of the first light turning element 12. In other words, the first light turning member 12 refracts the light twice (also referred to as "second refraction"), and the first light turning member 12 is also referred to as "second refraction prism". In addition, the first light turning member 12 is reflected on the second surface 122 and the third surface 123, and thus, the first light turning member 12 is reflected twice, and thus, the first light turning member 12 is also called a secondary reflection prism.
In addition, the optical paths of the lens module 10 except for the first light turning element 12 are consistent or substantially consistent with those of 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 element 12 to perform the secondary refraction and secondary reflection on the light, so as to meet the imaging requirement of the image sensor 13.
In addition, the effect of the first light turning member 12 on the light is seen, the first light turning member 12 has a smaller number of reflections and a smaller number of refractions. And further, the light loss caused by repeated reflection and repeated refraction of light rays is avoided. In other words, the first light turning element 12 according to the embodiment of the present application has smaller refractive loss and reflective loss, that is, smaller optical loss.
In other embodiments, the first light turning element 12 may be two flat mirrors, where one flat mirror is disposed at the position of the second surface 122 and the other flat mirror is disposed at the position of the third surface 123. The one plane mirror is used for reflecting the light transmitted through the lens assembly 11 to the other plane mirror, and the other plane mirror reflects the light reflected through the one plane mirror to the image sensor 13 for imaging.
In addition, when the inclination angles of the image sensor 13 are consistent with each other compared with the optical axis 111, all the light rays transmitted through the lens assembly 11 are emitted 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 in a curved surface structure, that is, the image sensor 13 includes a flexible substrate 131 and a plurality of photosensitive units 132, when the flexible substrate 131 is curved, a portion of the light beam transmitted through the lens assembly 11, which is far 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 beam, which is 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 application; fig. 13 is a schematic cross-sectional view taken along line D-D in 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 element 17 is configured to receive the incident light, change a transmission path of the incident light, and transmit the light to the lens assembly 11.
In this embodiment, the light enters the lens module 10 through the second light turning member 17, and enters the lens assembly 11 through changing the transmission path under the action of the second light turning member 17, and then exits to the first light turning member 12 through the lens assembly 11, and finally enters the image sensor 13 approximately vertically through changing the transmission path of the first light turning member 12, so as to perform 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, that is, reducing the thickness of the lens module 10.
In addition, the lens module 10 further includes a housing 18. The housing 18 is configured to house 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 entrance 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 dashed lines with arrows in fig. 13 represent 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 imaging quality of the image sensor 13.
While embodiments of the present application have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and alternatives to the above embodiments may be made by those skilled in the art within the scope of the application, which is also to be regarded as being within the scope of the application.
Claims (11)
1. A lens module, the lens module comprising:
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 is 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 away from the lens component, and is 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 component; wherein the image sensor comprises:
A flexible substrate, the flexible substrate being disposed in a curved manner; and
The plurality of photosensitive units are distributed on the surface of the flexible substrate, which is close to one side of the first light turning piece, and are used for receiving light.
2. The lens module as claimed in claim 1, wherein the angle α 1 by which the at least part of the image sensor is inclined with respect to the optical axis satisfies: alpha 1 is more than or equal to 30 degrees and less than or equal to 80 degrees.
3. The lens module as claimed in claim 2, wherein when the light beam with the transmission path changed by the first light turning element is incident on the image sensor, an included angle α 2 between the light beam and a surface of the image sensor is as follows: alpha 2 is more than or equal to 90 degrees and less than or equal to 3 degrees and 90 degrees+3 degrees.
4. The lens module as claimed in claim 3, wherein the inclination angle of the image sensor is uniform throughout 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 support piece is arranged on one side, away from the first light turning piece, of the image sensor and is used for supporting the image sensor.
5. The lens module as claimed in claim 1 or 4, wherein a thickness direction dimension d of the image sensor in the lens module satisfies: 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 assembly.
6. The lens module of claim 1, wherein the number of the first light turning members is two, and the two 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.
7. The lens module of claim 1, wherein the lens module further comprises:
The second fixing piece is arranged at two ends of the image sensor and used for fixing the image sensor.
8. The lens module as claimed in claim 1, wherein the first light turning member comprises a first surface, a second surface and a third surface which are connected in a pair-wise bending manner, the first surface is disposed closer to the lens assembly than the second surface and the third surface, the second surface is disposed closer to the image sensor than the first surface and the second surface, and the third surface is disposed between the first surface and the second surface;
Light rays transmitted by the lens component enter the first light turning component through the first surface and are refracted; the second surface is used for reflecting the light rays entering the first light turning piece from the first surface and entering the second surface to the third surface; the third surface is used for reflecting light rays reflected by the second surface back to the second surface and refracting and transmitting the light rays to the image sensor through the second surface.
9. The lens module of claim 1, wherein the lens module further comprises:
The second light turning piece is arranged at intervals with the lens component and is used for receiving incident light rays, changing the transmission path of the incident light rays and transmitting the light rays to the lens component compared with the lens component which is arranged away from the first light turning piece.
10. The lens module of claim 9, wherein the lens module further comprises:
The shell is used for accommodating the lens component, the first light turning piece, the image sensor and the second light turning piece, and is provided with a light entering part, wherein the light entering part is arranged corresponding to the second light turning piece and is used for transmitting incident light to the second light turning piece.
11. An electronic device, the electronic device comprising:
a lens module as claimed in any one of claims 1 to 10; and
The device body is used for bearing the lens module.
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| CN202210994451.6A CN115396574B (en) | 2022-08-18 | 2022-08-18 | Lens module and electronic equipment |
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| CN202210994451.6A CN115396574B (en) | 2022-08-18 | 2022-08-18 | Lens module and electronic equipment |
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| CN212675341U (en) * | 2020-07-09 | 2021-03-09 | 杭州今誉信息科技有限公司 | Optical imaging lens group |
| WO2022063024A1 (en) * | 2020-09-22 | 2022-03-31 | 维沃移动通信有限公司 | Electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20190022522A (en) * | 2017-07-07 | 2019-03-06 | 코어포토닉스 리미티드 | Folding camera prism design to prevent stray light |
| CN214707821U (en) * | 2019-12-25 | 2021-11-12 | Oppo广东移动通信有限公司 | Periscopic camera module, camera assembly and electronic device |
| CN111491085B (en) * | 2020-04-21 | 2021-11-05 | Oppo广东移动通信有限公司 | Image sensor, imaging device, and electronic apparatus |
| CN113747001B (en) * | 2020-05-27 | 2022-11-04 | 华为技术有限公司 | Electronic equipment and camera module |
| US11283978B1 (en) * | 2020-10-15 | 2022-03-22 | Asm Technology Singapore Pte Ltd | Aligning lens elements in a lens module relative to an image sensor |
| CN112637474B (en) * | 2020-12-30 | 2022-04-12 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN112887563B (en) * | 2021-01-25 | 2022-10-18 | 维沃移动通信有限公司 | Lens device and electronic apparatus |
| CN113079304B (en) * | 2021-04-25 | 2023-01-31 | 维沃移动通信有限公司 | Camera module and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212675341U (en) * | 2020-07-09 | 2021-03-09 | 杭州今誉信息科技有限公司 | Optical imaging lens group |
| WO2022063024A1 (en) * | 2020-09-22 | 2022-03-31 | 维沃移动通信有限公司 | Electronic device |
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