Camera modules and electronic equipment

Abstract

The present application discloses a camera module and electronic equipment, belonging to the field of camera technology. The camera module includes a base, a photosensitive chip, a first lens barrel, a first lens and a driving mechanism, wherein the photosensitive chip is arranged on the base, the first lens barrel is provided with the first lens, the first lens is arranged opposite to the photosensitive chip, the first lens barrel is sleeved on the base, the first lens barrel is connected to the base through a first matching protrusion and a first spiral guide groove, the first matching protrusion is a spirally extended strip protrusion; the driving mechanism is connected to the first lens barrel, and the driving mechanism drives the first lens barrel to move along a first direction under the cooperation of the first matching protrusion and the first spiral guide groove, and the first direction is a direction close to or away from the photosensitive chip. This solution can solve the problem of short life of the camera module.

Description

Technical Field

[0001] The present application belongs to the field of camera technology, and specifically relates to a camera module and electronic equipment. Background Art

[0002] Nowadays, as the camera technology of electronic devices continues to improve, people hope to use electronic devices to capture higher quality images.

[0003] In the actual shooting process, the subject can be magnified by optical zoom. Optical zoom can magnify the subject by changing the distance between the lens and the subject, so the lens needs to move during the zooming process. In order to achieve the movement of the lens, a matching protrusion can be provided on one lens barrel, and a slide groove can be provided on the other lens barrel. The matching protrusion and the slide groove slide together, so as to achieve relative movement between the two lens barrels, and finally achieve the movement of the lens.

[0004] However, due to the limited internal space of electronic devices, both the mating protrusion and the slide groove need to be miniaturized, which results in the mating protrusion being too small and having low structural strength. Once the camera module is impacted by external force, the mating protrusion is prone to breakage. Therefore, the life of traditional camera modules is short. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a camera module and an electronic device that can solve the problem of short life of the camera module.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a camera module, which includes a base, a photosensitive chip, a first lens barrel, a first lens, and a driving mechanism, wherein:

[0008] The photosensitive chip is arranged on the base, the first lens is provided with the first lens, the first lens is arranged opposite to the photosensitive chip, the first lens is sleeved on the base, the first lens is connected to the base through a first matching convex portion and a first spiral guide groove, and the first matching convex portion is a strip-shaped convex portion extending spirally;

[0009] The driving mechanism is connected to the first lens barrel, and the driving mechanism drives the first lens barrel to move along a first direction under the cooperation of the first matching protrusion and the first spiral guide groove, and the first direction is a direction approaching or moving away from the photosensitive chip.

[0010] In a second aspect, an embodiment of the present application provides an electronic device, which includes the above-mentioned camera module.

[0011] In the embodiment of the present application, when the camera module needs to zoom, the driving mechanism drives the first lens barrel to move along the first direction under the cooperation of the first matching protrusion and the first spiral guide groove, thereby driving the first lens away from or close to the photosensitive chip. Since the first matching protrusion is a spirally extended strip protrusion, the size of the first matching protrusion is larger, and its structural strength is improved accordingly. Therefore, even if the first matching protrusion is subjected to external force, it is not easy to break. Therefore, this embodiment can solve the problem of short life of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of the camera module disclosed in the embodiment of the present application;

[0013] Figure 2 A cross-sectional view of a camera module disclosed in an embodiment of the present application;

[0014] Figure 3 An exploded view of the camera module disclosed in the embodiment of the present application;

[0015] Figure 4 A schematic diagram of a partial structure of a camera module disclosed in an embodiment of the present application;

[0016] Figure 5 This is a cross-sectional view of a partial structure of a camera module disclosed in an embodiment of the present application.

[0017] Description of reference numerals:

[0018] 110-base, 111-second limiting straight groove;

[0019] 120 - first lens barrel, 121 - second limiting protrusion, 122 - first spiral guide groove;

[0020] 130-first lens;

[0021] 140 - active lens barrel, 141 - first limiting straight groove, 142 - third spiral guide groove, 144 - rack portion;

[0022] 150 - driven lens barrel, 151 - first matching protrusion, 152 - second spiral guide groove, 153 - first limiting protrusion;

[0023] 160-fixed lens barrel, 161-second matching convex part;

[0024] 170 - second lens barrel, 171 - third matching protrusion, 172 - third limiting straight groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] The camera module and electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0028] like Figures 1 to 5 As shown, an embodiment of the present application provides a camera module, which includes a base 110, a photosensitive chip (not shown in the figure), a first lens barrel 120, a first lens 130 and a driving mechanism.

[0029] The photosensitive chip is arranged on the base 110. In addition to the photosensitive chip, the base 110 can also be provided with other components of the camera module. Figures 1 to 3 In addition to the parts shown in , other parts may be included. The first lens barrel 120 is provided with a first lens 130, and the first lens 130 is arranged opposite to the photosensitive chip. The first lens 130 and the photosensitive chip can be arranged along the optical axis direction of the camera module. The photosensitive chip can be used to receive the light incident from the first lens 130, and finally convert the light signal into a digital image signal, so as to obtain an image.

[0030] The first lens barrel 120 is sleeved on the base 110. The first lens barrel 120 is connected to the base 110 through the first matching protrusion 151 and the first spiral guide groove 122. The first matching protrusion 151 is a strip-shaped protrusion extending in a spiral, that is, the first matching protrusion 151 is a spiral structure, and it has a certain width, and the direction of the width is the circumferential direction of the component where the first matching protrusion 151 is located. Correspondingly, the shape and size of the first spiral guide groove 122 matched with the first matching protrusion 151 are both adapted to the first matching protrusion 151, that is, the first spiral guide groove 122 is a strip-shaped groove extending in a spiral, and it also has a certain width, and the direction of the width is the circumferential direction of the component where the first spiral guide groove 122 is located, and the width of the first spiral guide groove 122 is substantially equal to the width of the first matching protrusion 151.

[0031] The driving mechanism is connected to the first lens barrel 120, and the driving mechanism drives the first lens barrel 120 to move in a first direction under the cooperation of the first matching protrusion 151 and the first spiral guide groove 122, and the first direction is a direction close to or away from the photosensitive chip. That is, according to the needs of video recording, under the driving action of the driving mechanism, the first lens barrel 120 can drive the first lens 130 to move in a direction close to or away from the photosensitive chip, thereby realizing the zoom function of the camera module. Optionally, the driving mechanism may include a motor.

[0032] In the embodiment of the present application, when the camera module needs to zoom, the driving mechanism drives the first lens barrel 120 to move along the first direction under the cooperation of the first matching protrusion 151 and the first spiral guide groove 122, thereby driving the first lens 130 away from or close to the photosensitive chip. Since the first matching protrusion 151 is a spirally extended strip-shaped protrusion, the size of the first matching protrusion 151 is relatively large, and its structural strength is improved accordingly. Therefore, even if the first matching protrusion 151 is subjected to external force, it is not easy to break. Therefore, this embodiment can solve the problem of short life of the camera module.

[0033] In the above embodiment, the driving mechanism can directly drive the first lens barrel 120 to move in a direction close to or away from the photosensitive chip under the cooperation of the first matching protrusion 151 and the first spiral guide groove 122. Optionally, the base 110 can be provided with a first matching protrusion 151, and the first lens barrel 120 can be provided with a first spiral guide groove 122. In this solution, the first lens barrel 120 rotates and moves at the same time, causing the wear amount of the first lens barrel 120 to increase sharply in a short time, resulting in a short life of the first lens barrel 120 and poor movement accuracy. Based on this, the camera module can also include an active lens barrel 140, which is rotatably arranged in the base 110, the active lens barrel 140 is connected to the first lens barrel 120, and the driving mechanism is connected to the active lens barrel 140. The driving mechanism drives the first lens barrel 120 to move in the first direction through the active lens barrel 140. At this time, the active lens barrel 140 can only rotate, and the first lens barrel 120 can only move along the first direction through the matching structure of the active lens barrel 140 and the first lens barrel 120, thereby reducing the wear of the first lens barrel 120, thereby extending its life and improving its movement accuracy.

[0034] Optionally, the active lens barrel 140 may be provided with a rack portion 144, and the driving mechanism may drive the active lens barrel 140 to rotate through the rack portion 144. The rack portion 144 may be provided in a full circle or partially. This driving method has the advantages of high transmission accuracy and long service life.

[0035] In the above embodiment, the active lens barrel 140 can be directly matched with the first lens barrel 120, that is, one of the active lens barrel 140 and the first lens barrel 120 is provided with a first matching protrusion 151, and the other is provided with a first spiral guide groove 122, so that the active lens barrel 140 directly drives the first lens barrel 120 to move. At this time, the distance variation range between the first lens 130 and the photosensitive chip depends on the movement amount of the first lens barrel 120 itself. Since the movement amount of the first lens barrel 120 is limited, the distance variation range between the first lens 130 and the photosensitive chip is limited, which is not conducive to significantly improving the zoom effect of the camera module. Therefore, in other embodiments, the camera module also includes a driven lens barrel 150, which is connected to the active lens barrel 140, and the first lens barrel 120 is sleeved outside the driven lens barrel 150. One of the driven lens barrel 150 and the first lens barrel 120 is provided with a first spiral guide groove 122, and the other is provided with a first matching protrusion 151. Optionally, the driven lens barrel 150 can also be connected to the active lens barrel 140 by means of a protrusion and a groove. In this embodiment, under the action of the active lens barrel 140, the driven lens barrel 150 can move relative to the active lens barrel 140, and the first lens barrel 120 can move relative to the driven lens barrel 150, that is, the driven lens barrel 150 and the first lens barrel 120 can both move relative to the base 110, so the distance between the first lens 130 and the photosensitive chip can be changed in a larger range, so that more shooting scenes can be adapted, and therefore, the zoom effect of the camera module is better. In addition, when the driven lens barrel 150 and the first lens barrel 120 are close to the photosensitive chip at the same time, the two can be gradually retracted into the base 110, so that when the camera module is in a non-shooting state, the volume of the camera module is small.

[0036] In a further optional embodiment, the camera module further comprises a fixed lens barrel 160, the fixed lens barrel 160 is fixedly arranged in the base 110, the driven lens barrel 150 is sleeved in the fixed lens barrel 160, one of the fixed lens barrel 160 and the driven lens barrel 150 is provided with a second matching protrusion 161, and the other is provided with a second spiral guide groove 152, and the driven lens barrel 150 can rotate and move with the matching of the second matching protrusion 161 and the second spiral guide groove 152. The rotation direction of the first matching protrusion 151 can be opposite to the rotation direction of the second matching protrusion 161. Since the fixed lens barrel 160 is fixed relative to the base 110, the fixed lens barrel 160 will neither rotate nor move, and the active lens barrel 140 is connected to the driven lens barrel 150, so the active lens barrel 140 can apply a driving force to the driven lens barrel 150, so that the driven lens barrel 150 rotates and moves under the matching action of the second matching protrusion 161 and the second spiral guide groove 152. In addition, in this embodiment, the active lens barrel 140 can drive the first lens barrel 120 to move through the driven lens barrel 150, the transmission path is shorter, and the reliability of the zooming process is higher.

[0037] The second matching protrusion 161 can be a block-shaped protrusion, and the second spiral guide groove 152 can be a groove matching the protrusion. In another embodiment, the second matching protrusion 161 is a strip-shaped protrusion extending in a spiral, that is, the second matching protrusion 161 is a spiral structure, and it has a certain width, and the direction of the width is the circumferential direction of the component where the second matching protrusion 161 is located. Correspondingly, the shape and size of the second spiral guide groove 152 matching the second matching protrusion 161 are both adapted to the second matching protrusion 161, that is, the second spiral guide groove 152 is a strip-shaped groove extending in a spiral, and it also has a certain width, and the direction of the width is the circumferential direction of the component where the second spiral guide groove 152 is located, and the width of the second spiral guide groove 152 is substantially equal to the width of the second matching protrusion 161. Since the second mating protrusion 161 is a spirally extending strip-shaped protrusion, the size of the second mating protrusion 161 is larger, and its structural strength is improved accordingly. Therefore, even if the second mating protrusion 161 is subjected to external force, it is not easy to break. Therefore, this embodiment can further solve the problem of short life of the camera module.

[0038] The length of the first mating protrusion 151 in the first direction may be less than the length of the component where it is located; or, the length of the first mating protrusion 151 in the first direction is substantially equal to the length of the component where it is located, that is, the first mating protrusion 151 extends from one end to the other end of the movable lens barrel 150; or, the first mating protrusion 151 extends from one end to the other end of the first lens barrel 120. Relatively speaking, when the length of the first mating protrusion 151 in the first direction is substantially equal to the length of the component where it is located, the structural strength of the first mating protrusion 151 is higher and less prone to damage. At the same time, the first mating protrusion 151 and the first spiral guide groove 122 always have a larger contact area, and the first lens barrel 120 can move more stably.

[0039] Similarly, the length of the second mating protrusion 161 in the first direction can be less than the length of the component in which it is located; or, the length of the second mating protrusion 161 in the first direction is substantially equal to the length of the component in which it is located, that is, the second mating protrusion 161 extends from one end to the other end of the driven lens barrel 150; or, the second mating protrusion 161 extends from one end to the other end of the fixed lens barrel 160. Relatively speaking, when the length of the second mating protrusion 161 in the first direction is substantially equal to the length of the component in which it is located, the structural strength of the second mating protrusion 161 is higher and less prone to damage. At the same time, the second mating protrusion 161 and the second spiral guide groove 152 always have a larger contact area, and the driven lens barrel 150 can move more stably.

[0040] Optionally, the fixed lens barrel 160 can be mounted on the outside of the driven lens barrel 150. In this case, the fixed lens barrel 160 is located between the base 110 and the driven lens barrel 150, so that the distance between the driven lens barrel 150 and the base 110 becomes larger. When the size of the base 110 is constant, the diameter of the driven lens barrel 150 becomes smaller. Correspondingly, the diameter of the first lens barrel 120 that cooperates with the driven lens barrel 150 will also become smaller, which causes the diameter of the first lens 130 to become smaller, resulting in poor imaging effect of the camera module. In order to improve the imaging effect of the camera module, the driven lens barrel 150 can be sleeved outside the fixed lens barrel 160. At this time, the diameter of the first lens barrel 120 is larger than the diameter of the driven lens barrel 150, and the diameter of the driven lens barrel 150 is larger than the diameter of the fixed lens barrel 160. This arrangement can make full use of the space in the base 110 to set the fixed lens barrel 160. The fixed lens barrel 160 will not affect the diameter of the first lens barrel 120, so the first lens barrel 120 can be set larger, thereby improving the imaging effect. In addition, after adopting this structure, liquids, dust, etc. in the external environment can basically only fall into the outer space of the driven lens barrel 150 and the fixed lens barrel 160 under the action of gravity, and then be blocked by the two, and it is not easy to enter the inner side of the two, so the waterproof performance of the camera module is better.

[0041] In an optional embodiment, the active lens barrel 140 is provided with a first limiting straight groove 141 extending along the first direction, and the driven lens barrel 150 is provided with a first limiting protrusion 153, and the first limiting protrusion 153 cooperates with the first limiting straight groove 141. Optionally, the base 110 can be provided with a spiral groove, and the first limiting protrusion 153 of the driven lens barrel 150 cooperates with the spiral groove provided on the base 110. When the active lens barrel 140 rotates, the first limiting straight groove 141 can drive the driven lens barrel 150 to rotate through the first limiting protrusion 153, and the driven lens barrel 150 moves along the first direction through the cooperation between the first limiting protrusion 153 and the spiral groove provided on the base 110. When the camera module also includes a fixed lens barrel 160, when the active lens barrel 140 drives the driven lens barrel 150 to rotate, the driven lens barrel 150 can move along the first direction through the cooperation between the second matching protrusion 161 and the second spiral guide groove 152, thereby achieving the purpose of rotation and movement. After the first limiting straight groove 141 is provided, the rotation of the active lens barrel 140 and the rotation of the driven lens barrel 150 can be performed synchronously. This implementation method has the advantages of simple structure and greater driving force.

[0042] Optionally, the camera module further includes a second lens barrel 170, the second lens barrel 170 is sleeved on the base 110, the first lens barrel 120 is sleeved on the second lens barrel 170, one of the second lens barrel 170 and the active lens barrel 140 is provided with a third matching protrusion 171, and the other is provided with a third spiral guide groove 142, and the second lens barrel 170 can move with the matching of the third matching protrusion 171 and the third spiral guide groove 142. Optionally, the third matching protrusion 171 can be a spiral protrusion with a certain width, or a columnar protrusion, which is not limited in the embodiment of the present application. When the active lens barrel 140 rotates, the second lens barrel 170 is subjected to the driving force applied by the active lens barrel 140, so that it moves under the cooperation of the third matching protrusion 171 and the third spiral guide groove 142, so the second lens barrel 170 and the first lens barrel 120 can form a secondary lens barrel structure that only moves in appearance, so that the camera module can be telescoped step by step, thereby expanding the zoom range of the camera module and improving the appearance texture of the camera module. In addition, the second lens barrel 170 only moves, and its wear amount is small and its service life is longer. Moreover, in this embodiment, the active lens barrel 140 can directly drive the second lens barrel 170 to move, the transmission path is short, and the reliability of the zoom process is higher.

[0043] In an optional embodiment, the base 110 is provided with a second limiting straight groove 111 extending along the first direction, the second lens barrel 170 is provided with a third matching protrusion 171, the active lens barrel 140 is provided with a third spiral guide groove 142, one end of the third matching protrusion 171 passes through the third spiral guide groove 142 and matches with the second limiting straight groove 111, and the second lens barrel 170 moves along the second limiting straight groove 111. When the second lens barrel 170 is driven by the active lens barrel 140, the rotation of the second lens barrel 170 will be limited by the second limiting straight groove 111, so that the second lens barrel 170 can only move but cannot rotate. At the same time, this embodiment only needs to cooperate with the third spiral guide groove 142 and the second limiting straight groove 111 respectively through the same third matching protrusion 171, so as to limit the rotation of the second lens barrel 170 while driving the second lens barrel 170 to move, without the need to additionally set a structure on the second lens barrel 170 for limiting its rotation, and without the need to additionally arrange components for limiting the second lens barrel 170. Therefore, this embodiment can simplify the structure of the camera module and make the structure of the camera module more compact.

[0044] The first lens barrel 120 also only moves but does not rotate. In order to limit the rotation of the first lens barrel 120, a component can be separately provided so that the first lens barrel 120 cooperates with the component in a limited position, but such a setting will increase the number of components included in the camera module, and its internal space will be more tense. Based on this, in other embodiments, the second lens barrel 170 is provided with a third limiting straight groove 172 extending along the first direction, the first lens barrel 120 is provided with a second limiting protrusion 121, the second limiting protrusion 121 cooperates with the third limiting straight groove 172, the first lens barrel 120 moves along the third limiting straight groove 172, and when the first lens barrel 120 has a tendency to rotate, the third limiting straight groove 172 can limit its rotation, so that the first lens barrel 120 can only move. Since the second lens barrel 170 is closer to the first lens barrel 120, the rotation of the first lens barrel 120 is limited by the second lens barrel 170, which makes it easier to design the structure of the first lens barrel 120 and the second lens barrel 170. At the same time, no additional components are needed to limit the rotation of the first lens barrel 120, thereby making the structure of the camera module simpler and more space inside it can be utilized.

[0045] An embodiment of the present application also discloses an electronic device, which includes the camera module in any of the above embodiments.

[0046] The electronic device disclosed in the embodiments of the present application may be a smart phone, a tablet computer, an e-book reader, a wearable device, an electronic game console, or the like. The embodiments of the present application do not limit the specific types of electronic devices.

[0047] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A camera module, characterized in that: It includes a base, a photosensitive chip, a first lens barrel, a first lens and a driving mechanism, wherein: The photosensitive chip is arranged on the base, the first lens is provided with the first lens, the first lens is arranged opposite to the photosensitive chip, the first lens is sleeved on the base, the first lens is connected to the base through a first matching convex portion and a first spiral guide groove, and the first matching convex portion is a strip-shaped convex portion extending spirally; The driving mechanism is connected to the first lens barrel, and the driving mechanism drives the first lens barrel to move along a first direction under the cooperation of the first matching protrusion and the first spiral guide groove, and the first direction is a direction approaching or moving away from the photosensitive chip; The camera module further includes an active lens barrel, which is rotatably disposed in the base, the active lens barrel is connected to the first lens barrel, the driving mechanism is connected to the active lens barrel, and the driving mechanism drives the first lens barrel to move through the active lens barrel; The camera module further comprises a driven lens barrel, the driven lens barrel is connected to the active lens barrel, the first lens barrel is sleeved outside the driven lens barrel, one of the driven lens barrel and the first lens barrel is provided with the first spiral guide groove, and the other is provided with the first matching protrusion; The camera module also includes a fixed lens barrel, which is fixedly disposed in the base, and the driven lens barrel is sleeved in the fixed lens barrel. One of the fixed lens barrel and the driven lens barrel is provided with a second mating protrusion, and the other is provided with a second spiral guide groove. The driven lens barrel can rotate and move with the mating of the second mating protrusion and the second spiral guide groove.

2. The camera module according to claim 1, characterized in that: The second matching protrusion is a strip-shaped protrusion extending in a spiral.

3. The camera module according to claim 2, characterized in that: The first mating protrusion extends from one end of the driven lens barrel to the other end; or, the first mating protrusion extends from one end of the first lens barrel to the other end; The second mating protrusion extends from one end of the driven lens barrel to the other end; or, the second mating protrusion extends from one end of the fixed lens barrel to the other end.

4. The camera module according to claim 1, characterized in that: The driven lens barrel is sleeved outside the fixed lens barrel.

5. The camera module according to claim 1, characterized in that: The active lens barrel is provided with a first limiting straight groove extending along the first direction, and the driven lens barrel is provided with a first limiting protrusion, and the first limiting protrusion cooperates with the first limiting straight groove.

6. The camera module according to claim 1, characterized in that: The camera module also includes a second lens barrel, which is sleeved on the base, and the first lens barrel is sleeved on the second lens barrel. One of the second lens barrel and the active lens barrel is provided with a third matching protrusion, and the other is provided with a third spiral guide groove. The second lens barrel can move with the matching of the third matching protrusion and the third spiral guide groove.

7. The camera module according to claim 6, characterized in that: The base is provided with a second limiting straight groove extending along the first direction, the second lens barrel is provided with the third matching protrusion, the active lens barrel is provided with the third spiral guide groove, one end of the third matching protrusion passes through the third spiral guide groove and matches with the second limiting straight groove, and the second lens barrel moves along the second limiting straight groove.

8. The camera module according to claim 6, characterized in that: The second lens barrel is provided with a third limiting straight groove extending along the first direction, the first lens barrel is provided with a second limiting protrusion, the second limiting protrusion cooperates with the third limiting straight groove, and the first lens barrel moves along the third limiting straight groove.

9. An electronic device, characterized in that: A camera module comprising any one of claims 1 to 8.

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