Camera module and wearable device

Abstract

The camera module comprises a circuit board which comprises a substrate and an electronic component, and the electronic component is arranged on one side of the substrate and electrically connected with the substrate; the photosensitive chip is arranged on the substrate and electrically connected with the substrate, and the photosensitive chip and the electronic component are arranged at an interval; the lens base is arranged on the substrate, a light through hole is formed in the lens base, the light through hole is located in a light sensing path of the light sensing chip, a containing groove is formed in the side, facing the substrate, of the lens base, and the containing groove comprises a communicating hole communicating with the light through hole and a groove; the light filtering part is arranged on the groove surface, facing the substrate, of the groove and is positioned on a light sensing path of the light sensing chip; the lens is rotatably arranged in the light through hole and located on the side, away from the light sensing chip, of the light filtering piece. According to the camera module, focusing can be achieved by rotating the lens, so that the lens is adjusted to the optimal image position, the size of the camera module can be reduced, and miniaturization of the camera module is facilitated. The embodiment of the utility model further provides wearable equipment which comprises a shell and the camera module, and the camera module is arranged on the shell.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to a camera module and a wearable device. Background Art

[0002] Currently, with the rapid development of augmented reality (AR) and virtual reality (VR) technologies, the demand for high-quality, low-latency visual input devices is growing. As a key component of these devices, the structure and performance of the camera module directly affect the user experience of the product. However, the existing camera module has a large structural size, which affects the overall structure of the product. Utility Model Content

[0003] In view of the above, it is necessary to propose a camera module and a wearable device to reduce the size of the camera module.

[0004] The embodiment of the present application provides a camera module, comprising: a circuit board, comprising a substrate and electronic components, wherein the electronic components are arranged on one side of the substrate and electrically connected to the substrate; a photosensitive chip, arranged on the substrate and electrically connected to the substrate, the photosensitive chip and the electronic components are arranged at an interval; a lens seat, arranged on the substrate, the lens seat is provided with a light through hole, the light through hole is located on the light sensitive path of the photosensitive chip, and the side of the lens seat facing the substrate is provided with a receiving groove, the receiving groove comprises a connecting hole connected to the light through hole and a groove for avoiding the electronic components; a filter is arranged on the groove surface of the groove facing the substrate, and is located on the light sensitive path of the photosensitive chip; a lens is rotatably arranged on the light through hole, and is located on the side of the filter away from the photosensitive chip.

[0005] In the above-mentioned camera module, since the lens is rotated through the light hole arranged in the lens holder, the lens holder and the lens can be focused by rotating the lens, so that the lens can be adjusted to the best imaging position; a groove for avoiding electronic components is provided on the side of the lens holder facing the substrate, and the filter is arranged on the groove surface facing the substrate, which can reduce the size of the camera module and is conducive to the miniaturization of the camera module.

[0006] In some embodiments, the wavelength of the filter element ranges from 830 mm to 860 mm.

[0007] In this way, through the cutoff and anti-reflection capabilities of the filter, the visible light band can be filtered out and the transmission of infrared light can be enhanced, so that night photography and macro photography can be achieved.

[0008] In some embodiments, an anti-reflection layer is disposed on a side of the optical filter facing the substrate.

[0009] Since the transmission of light between two media with different refractive indices, such as air and glass, will result in the loss of light energy, the provision of an anti-reflection layer can prevent the loss caused by light reflection on the filter, thereby improving image quality.

[0010] In some embodiments, at least one reinforcing member is disposed on a groove surface of the groove facing the substrate to increase the strength of the mirror holder.

[0011] In this way, the reinforcement piece can provide effective support to the groove surface of the groove, thereby increasing the strength of the mirror holder.

[0012] In some embodiments, the camera module also includes a connector, which is arranged on a side of the substrate away from the photosensitive chip, and the connector and the photosensitive chip are respectively located at two ends of the substrate.

[0013] By arranging the connector and the photosensitive chip at both ends of the substrate and maintaining a certain distance between the connector and the photosensitive chip, the installation of the lens holder and the lens can be facilitated.

[0014] In some embodiments, the camera module also includes at least two reinforcement members, at least one of which is arranged on the side of the substrate away from the photosensitive chip and opposite to the photosensitive chip, and at least one of which is arranged on the side of the substrate away from the connector and opposite to the connector.

[0015] In this way, the reinforcement can form grounding protection for the camera module and also increase the strength of the substrate of the camera module.

[0016] In some embodiments, an air escape hole is provided on the mirror base, and the air escape hole passes through the groove surface and is connected with the groove.

[0017] In this way, the filter can be prevented from breaking.

[0018] In some embodiments, the lens is threadedly connected to the hole wall of the light-through hole.

[0019] In this way, the focusing of the lens mount and the lens can be achieved by rotating the lens, and the connection between the lens mount and the lens is more secure.

[0020] In some embodiments, the camera module further includes a conductive component, two ends of which are respectively connected to the photosensitive chip and the substrate.

[0021] In this way, the conductive member can realize the electrical connection between the photosensitive chip and the substrate.

[0022] An embodiment of the present application also provides a wearable device, comprising a housing and the camera module as described above, wherein the camera module is disposed in the housing.

[0023] The above-mentioned wearable device includes a camera module. Since the lens in the camera module is rotated and arranged at the light-through hole of the lens holder, the focusing of the lens holder and the lens can be achieved by rotating the lens, so that the lens can be adjusted to the optimal imaging position; a groove for avoiding electronic components is provided at one end of the light-through hole of the lens holder close to the substrate, and the filter is arranged on the groove surface facing the substrate, which can reduce the size of the camera module and is conducive to the miniaturization of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of a wearable device proposed in one embodiment of the present application.

[0025] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the camera module in the wearable device shown.

[0026] Figure 3 yes Figure 2 The cross-sectional structure diagram of the camera module along line AA is shown.

[0027] Figure 4 yes Figure 2 A schematic diagram of the three-dimensional structure of the lens holder in the camera module shown in another angle.

[0028] Main component symbols

[0029] Wearable Devices 100

[0030] Housing 10

[0031] Camera module 20

[0032] Circuit board 21

[0033] Substrate 211

[0034] Electronic components 212

[0035] Photosensitive chip 22

[0036] Mirror mount 23

[0037] Accommodating slot 230

[0038] Connecting hole 2301

[0039] Light hole 231

[0040] Groove 232

[0041] Groove surface 2321

[0042] Reinforcement 233

[0043] Escape hole 234

[0044] Thread 235

[0045] Filter 24

[0046] Anti-reflection layer 241

[0047] Shot 25

[0048] Connector 26

[0049] Reinforcement 27

[0050] Conductive parts 28 DETAILED DESCRIPTION

[0051] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0052] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0053] See also Figure 1 The embodiment of the present application provides a wearable device 100, including a housing 10 and a camera module 20, wherein the camera module 20 is disposed in the housing 10. The wearable device 100 may be an AR, a VR, an electronic watch, or the like.

[0054] See also Figure 2 and Figure 3 The camera module 20 includes a circuit board 21, a photosensitive chip 22, a lens holder 23, a filter 24 and a lens 25. The circuit board 21 includes a substrate 211 and an electronic component 212. The electronic component 212 is arranged on one side of the substrate 211 and is electrically connected to the substrate 211. The photosensitive chip 22 is arranged on the substrate 211 and is electrically connected to the substrate 211. The photosensitive chip 22 and the electronic component 212 are arranged at intervals. The lens holder 23 is arranged on the substrate 211. The lens holder 23 is provided with a light-through hole 231. The light-through hole 231 is located on the light-sensitive path of the photosensitive chip 22. The side of the lens holder 23 facing the substrate 211 is provided with a receiving groove 230. The receiving groove 230 includes a connecting hole 2301 connected to the light-through hole 231 and a groove 232 for avoiding the electronic component 212. The filter 24 is arranged on the groove surface 2321 of the groove 232 facing the substrate 211, and is located on the light-sensitive path of the photosensitive chip 22. The lens 25 is rotatably disposed on the light-through hole 231 and is located on a side of the filter element 24 away from the photosensitive chip 22 .

[0055] In this embodiment, the electronic components 212 include resistors, capacitors, driver ICs and other devices. The photosensitive chip 22 is bonded to the substrate 211 by glue. The filter 24 is bonded to the groove surface 2321 of the groove 232 by glue. The filter 24 can filter stray light in the light entering the interior of the camera module 20 from the lens 25. The lens 25 is composed of a lens barrel and at least one lens disposed in the lens barrel.

[0056] In some embodiments, the wavelength of the filter 24 ranges from 830 mm to 860 mm. In this embodiment, the wavelength of the filter 24 is 850 mm. The filter 24 is a narrow-band filter with a narrow bandwidth, which allows light of a specific wavelength band to pass through, while other short-wavelength light bands will be cut off or reflected. In this way, through the cut-off and anti-reflection capabilities of the filter 24, the visible light band can be filtered out, and the transmission of infrared light can be enhanced, so that night photography and macro photography can be achieved.

[0057] In some embodiments, an anti-reflection layer 241 is provided on the side of the filter 24 facing the substrate 211. In this embodiment, the anti-reflection layer 241 is a layer of ink. Since light energy is lost when it is transmitted between two media with different refractive indices, such as air and glass, the anti-reflection layer 241 can prevent the loss of light caused by reflection on the filter 24, thereby improving the image quality.

[0058] Please also see Figure 4 In some embodiments, at least one reinforcing member 233 is disposed on the groove surface 2321 of the groove 232 facing the substrate 211. In this embodiment, the reinforcing member 233 is two groups of reinforcing ribs symmetrically disposed on both sides of the light-through hole 231, and each group of reinforcing ribs is T-shaped. In this way, the reinforcing member 233 can effectively support the groove surface 2321 of the groove 232, thereby increasing the strength of the mirror base 23.

[0059] In some embodiments, the camera module 20 further includes a connector 26, which is disposed on a side of the substrate 211 away from the photosensitive chip 22, and the connector 26 and the photosensitive chip 22 are respectively located at two ends of the substrate 211. By arranging the connector 26 and the photosensitive chip 22 at two ends of the substrate 211, a certain distance is maintained between the connector 26 and the photosensitive chip 22, which can facilitate the installation of the lens holder 23 and the lens 25.

[0060] In some embodiments, the camera module 20 further includes at least two reinforcing members 27, at least one reinforcing member 27 is disposed on a side of the substrate 211 away from the photosensitive chip 22 and opposite to the photosensitive chip 22, and at least one reinforcing member 27 is disposed on a side of the substrate 211 away from the connector 26 and opposite to the connector 26. In this embodiment, the reinforcing member 27 is a steel sheet, and the reinforcing member 27 is connected to the substrate 211 by glue. In this way, the reinforcing member 27 can form a grounding protection for the camera module 20, and also increase the strength of the substrate 211 of the camera module 20.

[0061] In some embodiments, the lens holder 23 is provided with an air escape hole 234, which is a cylindrical hole, and the air escape hole 234 passes through the groove surface 2321 and is connected with the groove 232. In this way, the filter element 24 can be prevented from breaking.

[0062] In some embodiments, the lens 25 is threadedly connected to the hole wall of the light-through hole 231. It is understood that the thread 235 on the lens 25 is adapted to the screw thread on the hole wall of the light-through hole 231. In this way, the focusing of the lens holder 23 and the lens 25 can be achieved by rotating the lens 25, and the connection between the lens holder 23 and the lens 25 is more secure. It is understood that when the lens holder 23 and the lens 25 are focused, when the lens 25 is rotated to the best image position, glue is applied at the connection between the lens 25 and the lens holder 23 to fix the lens 25.

[0063] In some embodiments, the camera module 20 further includes a conductive member 28, and two ends of the conductive member 28 are respectively connected to the photosensitive chip 22 and the substrate 211. In this embodiment, the conductive member 28 is a gold wire. In this way, the conductive member 28 can achieve electrical connection between the photosensitive chip 22 and the substrate 211.

[0064] The wearable device 100 of the embodiment of the present application includes a camera module 20. Since the lens 25 in the camera module 20 is rotated to be arranged on the light-through hole 231 of the lens holder 23, the lens holder 23 and the lens 25 can be focused by rotating the lens 25, so that the lens 25 is adjusted to the optimal imaging position; a groove 232 for avoiding the electronic component 212 is provided on the side of the lens holder 23 facing the substrate 211, and the filter 24 is arranged on the groove surface 2321 of the groove 232 facing the substrate 211, which can reduce the size of the camera module 20 and is conducive to the miniaturization of the camera module 20.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A camera module, characterized in that: include: A circuit board, comprising a substrate and electronic components, wherein the electronic components are arranged on one side of the substrate and are electrically connected to the substrate; A photosensitive chip is disposed on the substrate and electrically connected to the substrate, and the photosensitive chip is spaced apart from the electronic components; A mirror seat is arranged on the substrate, the mirror seat is provided with a light-through hole, the light-through hole is located on the light-sensitive path of the photosensitive chip, and a receiving groove is arranged on a side of the mirror seat facing the substrate, the receiving groove includes a connecting hole connected to the light-through hole and a groove for avoiding the electronic components; A light filter, arranged on a groove surface of the groove facing the substrate and located on a light sensing path of the light sensing chip; The lens is rotatably disposed on the light-through hole and is located on a side of the filter element away from the photosensitive chip.

2. The camera module according to claim 1, characterized in that: The wavelength of the filter element ranges from 830 mm to 860 mm.

3. The camera module according to claim 1, characterized in that: An anti-reflection layer is provided on the side of the optical filter facing the substrate.

4. The camera module according to claim 1, characterized in that: At least one reinforcing piece is arranged on the groove surface facing the substrate to increase the strength of the mirror base.

5. The camera module according to claim 1, wherein: The camera module also includes a connector, which is arranged on a side of the substrate away from the photosensitive chip, and the connector and the photosensitive chip are respectively located at two ends of the substrate.

6. The camera module according to claim 5, characterized in that: The camera module also includes at least two reinforcement members, at least one of which is arranged on a side of the substrate away from the photosensitive chip and opposite to the photosensitive chip, and at least one of which is arranged on a side of the substrate away from the connector and opposite to the connector.

7. The camera module according to claim 1, wherein: An air escape hole is provided on the mirror seat, and the air escape hole passes through the groove surface and is communicated with the groove.

8. The camera module according to claim 1, wherein: The lens is threadedly connected to the hole wall of the light-through hole.

9. The camera module according to claim 1, characterized in that: The camera module also includes a conductive component, two ends of which are respectively connected to the photosensitive chip and the substrate.

10. A wearable device, characterized in that: It comprises a shell and a camera module as described in any one of claims 1 to 9, wherein the camera module is arranged in the shell.

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