Periscopic camera module and mobile terminal

Abstract

The utility model relates to a periscopic camera module and a mobile terminal, and the periscopic camera module comprises a lens assembly which is used for receiving incident light of a target image; a voice coil motor, the lens assembly is installed on the voice coil motor, and the voice coil motor is used for adjusting the position of the lens assembly; the voice coil motor is installed on the top surface of the prism base, and the light-seeing surface of the lens assembly is parallel to the top surface of the prism base; the prism is installed in the prism base, the first side face of the prism is right opposite to the light emitting face of the lens assembly, and the second side face of the prism is used for projecting light rays; the photosensitive chip is arranged on the circuit board and is opposite to the second side surface of the prism; and the circuit board is used for supporting the photosensitive chip and transmitting the electric signal. According to the utility model, the assembly precision can be improved and the cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of periscope camera modules, and in particular to a periscope camera module and a mobile terminal. Background Art

[0002] With the rapid development of science and technology, consumers and photography enthusiasts have higher and higher requirements for the quality of photos and videos, especially the telephoto camera module used for long-distance shooting, which can clearly shoot distant scenes, wild animals, sports games, etc. The telephoto camera module also has the function of focusing on the subject, and the background will be naturally blurred, which makes the subject more prominent and the background blurred.

[0003] However, if the current telephoto camera module wants to shoot farther and achieve better results, it must use a lens with a longer EFL (equivalent focal length), which will make the camera module larger and larger. Only the periscope camera module can solve the problem of large size. In order to avoid the shaking of the long-distance shooting screen and video caused by the shaking during telephoto shooting, the periscope telephoto lens must also be equipped with an optical image stabilization function, so the telephoto periscope optical image stabilization camera module will be larger and more complex in process.

[0004] Therefore, it is necessary to develop a new periscope camera module and mobile terminal. Summary of the invention

[0005] The purpose of the utility model is to provide a periscope camera module and a mobile terminal, which can increase assembly accuracy and reduce costs.

[0006] In a first aspect, a periscope camera module according to the present utility model comprises:

[0007] A lens assembly, for receiving incident light of a target image;

[0008] A voice coil motor, on which the lens assembly is mounted, for adjusting the position of the lens assembly;

[0009] A prism base, the voice coil motor is mounted on the top surface of the prism base, and the light-seeing surface of the lens assembly is parallel to the top surface of the prism base;

[0010] A prism is installed in the prism base, and a first side surface of the prism is arranged opposite to the light-emitting surface of the lens assembly, and a second side surface of the prism is used for projecting light;

[0011] A photosensitive chip is disposed on the circuit board and directly faces the second side surface of the prism;

[0012] A circuit board is used to support the photosensitive chip and transmit the electrical signal.

[0013] Optionally, the prism base further includes a filter mounting structure for mounting a filter, wherein the filter is located between the second side surface of the prism and the photosensitive chip and is used for filtering light of non-target wavelength bands.

[0014] Optionally, the filter mounting structure comprises a filter slot disposed on the prism base, and the filter is mounted in the filter slot.

[0015] Optionally, the prism base is provided with a containing space for installing the prism, and the prism is located in the containing space;

[0016] An anti-shake component is also provided in the prism base, and the anti-shake component is connected to the prism and is used to move the prism in the horizontal direction when the periscope camera module shakes.

[0017] Optionally, the prism is a right-angle prism, the first side surface is a first right-angle surface, the second side surface is a second right-angle surface, and the first right-angle surface and the second right-angle surface are perpendicular to each other; the light-emitting surface of the lens assembly is opposite to the first right-angle surface of the prism; and the photosensitive chip is opposite to the second right-angle surface of the prism.

[0018] Optionally, a connector connected to the circuit board is further included to transmit the electrical signal to a mainboard of the mobile terminal.

[0019] Optionally, the circuit board is L-shaped, including a first sub-circuit board and a second sub-circuit board, the first sub-circuit board is located outside the prism base and fixedly connected to the prism base, and the second sub-circuit board is located outside the prism base and connected to the voice coil motor and the anti-shake component.

[0020] Optionally, the lens assembly is a telephoto lens.

[0021] In a second aspect, a mobile terminal described in the utility model adopts the periscope camera module described in the utility model.

[0022] The utility model has the following advantages:

[0023] (1) The periscope camera module described in the utility model can reduce the assembly process from the traditional two AA processes to one, thereby significantly improving the assembly efficiency and reducing the production cost.

[0024] (2) The periscope camera module described in the utility model optimizes the component structure and the mounting structure, so that the traditional side AA process can be changed to a front AA process. This change not only reduces the difficulty of the production process, making the production process simpler and more efficient, but also improves the overall production efficiency, bringing substantial improvements to the manufacturing process.

[0025] (3) The periscope camera module described in the present invention has made an innovation in the assembly method, that is, the lens assembly and the voice coil motor are assembled vertically. This vertical assembly method is easier in optical center correction and position fixation, making the assembly process more precise and reliable, thereby ensuring the high performance and stability of the camera module.

[0026] (4) The periscope camera module described in the present invention integrates the prism base and the bracket into one unit, which not only reduces the number of brackets, but also reduces the offset and tilt caused by one-time assembly.

[0027] (5) Compared with the traditional periscope camera module, the periscope camera module of the present invention also reduces the metal frameless bracket, thereby reducing the size of the periscope camera module and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the existing periscope camera module with anti-shake function;

[0029] Figure 2 for Figure 1 Analytical diagram of ;

[0030] Figure 3 Schematic diagram of the structure of the periscope camera module described in the embodiment of the present application;

[0031] Figure 4 for Figure 3 Analytical diagram of ;

[0032] Description of the symbols in the accompanying drawings:

[0033] 1', traditional prism base, 3', traditional voice coil motor, 4', lens assembly;

[0034] 1. Prism base, 11. Accommodating space, 12. Filter slot, 13. OIS optical image stabilization welding pin, 2. Prism, 21. First side, 22. Second side, 3. Voice coil motor, 31. Welding pin, 4. Lens assembly, 5. Filter, 6. Bracket, 7. Photosensitive chip, 8. Circuit board, 81. First sub-circuit board, 82. Second sub-circuit board, 9. Connector, 10. Metal bracket.

[0035] Figure 2 and Figure 4 The arrows in the figure indicate the direction of the light path. DETAILED DESCRIPTION

[0036] The following will refer to the accompanying drawings and preferred embodiments to illustrate the implementation of the technical solution of the utility model. Those skilled in the art can easily understand other advantages and effects of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the utility model. It should be understood that the preferred embodiments are only for illustrating the utility model, not for limiting the scope of protection of the utility model.

[0037] like Figure 1 and Figure 2 As shown, the existing periscope camera module with anti-shake function consists of a prism base 1', a prism 2, a voice coil motor 3', a lens assembly 4', a filter 5, a bracket 6, a photosensitive chip 7, a circuit board 8, a connector 9 and a metal bracket 10. The prism base 1' mainly supports the prism 2, and at the same time drives the prism 2 to perform optical anti-shake compensation in the X and Y directions. The prism 2 mainly transmits the light of the photographed object to the lens assembly 4' (telephoto lens). When the anti-shake function needs to be turned on, the optical X and Y offset positions are adjusted. The voice coil motor 3' mainly fixes the lens assembly 4', and at the same time drives the telephoto lens to perform Z-axis AF autofocus movement. The lens assembly 4' mainly changes the focal length of the lens to focus on the focus to shoot distant objects. The filter 5 mainly filters out infrared light, ultraviolet light and stray light, and only transmits visible light to the photosensitive chip 7. The bracket 6 mainly carries the fixed position of the filter 5 to protect the gold wires and electronic components around the photosensitive chip 7. The photosensitive chip 7 mainly converts the received light signal into an electrical signal, and processes and displays the photographed object picture and video. The circuit board 8 mainly carries and fixes the photosensitive chip 7 and electronic components, and transmits the electrical signal to the connector 9. The connector 9 is mainly responsible for transmitting the electrical signal to the mainboard of the mobile terminal, and at the same time fixes the periscope camera module. The metal bracket 10 is mainly used to fix the various components together to increase the reliability of the periscope camera module.

[0038] However, this periscope camera module has several disadvantages:

[0039] 1. There are too many parts, and a metal bracket 10 is ultimately required for fixing, which increases the volume and size of the periscope camera module, and also increases the cost and assembly difficulty of the periscope camera module.

[0040] 2. The lens assembly 4 ′ lies horizontally inside the voice coil motor 3 . It is difficult to assemble the lens assembly 4 ′ into the voice coil motor 3 . The small gap makes it difficult to adjust the optical center.

[0041] 3. The assembly of the voice coil motor 3' and the bracket 6, and the assembly of the prism 2 and the voice coil motor 3', both require the use of AA automatic alignment. AA automatic alignment requires high equipment precision and has low efficiency. One camera module uses two AA processes, which is very inefficient and costly.

[0042] like Figure 3 and Figure 4 As shown, in order to solve the above problems, a periscope camera module is provided in an embodiment of the present application, including a lens assembly 4, a voice coil motor 3, a prism base 1, a prism 2, a photosensitive chip 7, a circuit board 8 and a connector 9. That is, compared with the traditional periscope camera module, the bracket 6 and the metal bracket 10 are reduced.

[0043] like Figure 3 and Figure 4 As shown, in an embodiment of the present application, the lens assembly 4 adopts a telephoto lens for receiving incident light of the target image. The lens assembly 4 is mounted on the voice coil motor 3, and the voice coil motor 3 is used to adjust the position of the lens assembly 4. The voice coil motor 3 is mounted on the top surface of the prism base 1, and the light-seeing surface of the lens assembly 4 is parallel to the top surface of the prism base 1. The prism 2 is installed in the prism base 1, and the first side surface 21 of the prism 2 is arranged opposite to the light-emitting surface of the lens assembly 4, and the second side surface 22 of the prism 2 is used to project light. The photosensitive chip 7 is arranged on the circuit board 8, and the photosensitive chip 7 is opposite to the second side surface 22 of the prism 2. The circuit board 8 is used to support the photosensitive chip 7 and transmit electrical signals. The connector 9 is connected to the circuit board 8, and the connector 9 is used to transmit electrical signals to the mainboard of the mobile terminal.

[0044] like Figure 4 As shown, in a possible embodiment, the prism base 1 also includes a filter mounting structure for mounting a filter 5, and the filter 5 is located between the second side surface 22 of the prism 2 and the photosensitive chip 7, and is used to filter light of non-target bands. In the embodiment of the present application, the prism base 1 integrates the traditional prism base 1' and the bracket 6 into one, which not only reduces the bracket 6, but also reduces the offset and tilt caused by one-time assembly.

[0045] like Figure 4 As shown, in a possible embodiment, the filter mounting structure includes a filter slot 12 disposed on the prism base 1 , and the filter 5 is mounted in the filter slot 12 .

[0046] like Figure 4As shown, in a possible embodiment, the prism base 1 is provided with a containing space 11 for installing the prism 2, and the prism 2 is located in the containing space 11. An anti-shake component is also provided in the prism base 1, and the anti-shake component is connected to the prism 2, and is used to move the prism 2 in the horizontal direction when the periscope camera module shakes. In a specific example, the anti-shake component includes a driving magnet and a coil, wherein the driving magnet is fixed on the prism 2, and the coil is fixed on the prism base 1. After the coil is energized, it interacts with the corresponding driving magnet to generate an Ampere force that can drive the prism 2 to undergo corresponding displacement changes in the X direction / Y direction to achieve the anti-shake function. The anti-shake component is a prior art and will not be described in detail here.

[0047] like Figure 4 As shown, in a possible embodiment, the prism 2 is a right-angle prism, wherein the first side surface 21 of the prism 2 is a first right-angle surface, the second side surface 22 of the prism 2 is a second right-angle surface, and the first right-angle surface and the second right-angle surface are perpendicular to each other. The light-emitting surface of the lens assembly 4 is opposite to the first right-angle surface of the prism 2; and the photosensitive chip is opposite to the second right-angle surface of the prism 2.

[0048] like Figure 4 As shown, in a possible embodiment, the lens assembly 4 is a telephoto lens. The telephoto lens mainly changes the focal length of the lens and focuses on shooting distant objects. The voice coil motor 3 mainly fixes the telephoto lens and drives the telephoto lens to perform Z-axis AF autofocus movement.

[0049] like Figure 3 As shown, in a possible embodiment, the circuit board 8 is L-shaped, including a first sub-circuit board 81 and a second sub-circuit board 82. The first sub-circuit board 81 is located outside the prism base 1 and is fixedly connected to the prism base 1. The second sub-circuit board 82 is located outside the prism base 1 and is connected to the voice coil motor 3 and the anti-shake component. Specifically, the second sub-circuit board 82 is connected to the two welding PINs 31 on the voice coil motor 3, and the second sub-circuit board 82 is connected to the OIS optical image stabilization welding Pin 13 on the prism base 1. The anti-shake component is electrically connected to the OIS optical image stabilization welding Pin 13. The voice coil motor 3 and the anti-shake component are powered by the circuit board 8, and control instructions are sent and feedback signals are received.

[0050] The periscope camera module described in the embodiment of the present application has a simple assembly process. The prism base 1 can be assembled using an LHA machine. Compared with the AA machine, the LHA machine has low cost and high efficiency. At the same time, the traditional prism base and the Bracket bracket 6 are designed as one body, which reduces the offset and tilt caused by one assembly. The accuracy of the LHA machine fully meets the imaging requirements of the camera module. In addition, the telephoto lens and the voice coil motor 3 are assembled vertically, which makes it much easier to correct the optical center and fix the position. After the telephoto lens and the voice coil motor 3 are assembled as one body, they are automatically aligned and fixed on the prism base 1 through AA, which ensures the minimum offset of the optical axis while reducing the assembly process between parts.

[0051] In an embodiment of the present application, a mobile terminal adopts the periscope camera module as described in the embodiment of the present application.

[0052] The above-mentioned embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. A periscope camera module, characterized in that: include: A lens assembly (4) for receiving incident light of a target image; A voice coil motor (3), wherein the lens assembly (4) is mounted on the voice coil motor (3) and is used to adjust the position of the lens assembly (4); A prism base (1), the voice coil motor (3) being mounted on the top surface of the prism base (1), and the light-seeing surface of the lens assembly (4) being parallel to the top surface of the prism base (1); A prism (2) is installed in the prism base (1), and a first side surface (21) of the prism (2) is arranged opposite to a light-emitting surface of the lens assembly (4), and a second side surface (22) of the prism (2) is used for projecting light; A photosensitive chip (7) is arranged on the circuit board (8) and is directly opposite to the second side surface (22) of the prism (2); A circuit board (8), used for supporting the photosensitive chip (7) and transmitting electrical signals; The prism base (1) is provided with a receiving space (11) for installing the prism (2), and the prism (2) is located in the receiving space (11); An anti-shake component is also provided in the prism base (1), and the anti-shake component is connected to the prism (2) and is used to move the prism (2) in a horizontal direction when the periscope camera module shakes.

2. The periscope camera module according to claim 1, characterized in that: The prism base (1) further comprises a filter mounting structure for mounting a filter (5); the filter (5) is located between the second side surface (22) of the prism (2) and the photosensitive chip (7) and is used for filtering light in a non-target wavelength band.

3. The periscope camera module according to claim 2, characterized in that: The optical filter installation structure comprises an optical filter slot (12) arranged on the prism base (1), and the optical filter (5) is installed in the optical filter slot (12).

4. The periscope camera module according to claim 1, characterized in that: The prism (2) is a right-angle prism, the first side surface (21) is a first right-angle surface, the second side surface (22) is a second right-angle surface, and the first right-angle surface and the second right-angle surface are perpendicular to each other; the light-emitting surface of the lens assembly (4) is opposite to the first right-angle surface of the prism (2); and the photosensitive chip (7) is opposite to the second right-angle surface of the prism (2).

5. The periscope camera module according to claim 2, characterized in that: It also includes a connector (9) connected to the circuit board (8) and used to transmit the electrical signal to the mainboard of the mobile terminal.

6. The periscope camera module according to claim 1, characterized in that: The circuit board (8) is L-shaped and comprises a first sub-circuit board (81) and a second sub-circuit board (82); the first sub-circuit board (81) is located outside the prism base (1) and is fixedly connected to the prism base (1); and the second sub-circuit board (82) is located outside the prism base (1) and is connected to the voice coil motor (3) and the anti-shake component.

7. The periscope camera module according to claim 1, characterized in that: The lens assembly (4) is a telephoto lens.

8. A mobile terminal, characterized in that: A periscope camera module as described in any one of claims 1 to 7 is adopted.

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