A camera module

Abstract

The present invention discloses a camera module, which relates to the field of camera technology and solves the technical problem of the large size of the ultra-macro camera module in the prior art. The module comprises a first lens, a second lens, a circuit board and an LED, wherein the second lens is arranged on the top of the first lens for acquiring an image, the circuit board is arranged on the bottom of the first lens, the LED is electrically connected to the circuit board for supplementary light to the second lens, and the LED is located on the circuit board. The present invention electrically connects the LED to the circuit board of the camera module, eliminating the need to design a separate circuit board for the LED, and at the same time, enables the LED and the circuit board to share a connector drive, thereby reducing the size of the entire camera module, reducing the number of components of the camera module, and expanding the installation position of the remaining components of the terminal device.

Description

Technical Field

[0001] The present invention relates to the technical field of cameras, and in particular to a camera module. Background Art

[0002] In order to improve the camera's photographing performance and meet users' photography needs, more and more mobile phones have super macro cameras, for example. Users can use super macro cameras to shoot super macro scenes such as close-up fields of view.

[0003] In the prior art, since the ultra-macro camera usually adopts a structure in which an autofocus lens and a fixed focal length lens are superimposed, the volume of the entire camera module is relatively large. The large camera module occupies the installation position of other components, making the installation and components of other components relatively compact. Therefore, how to design the structure of the ultra-macro camera module to reduce the volume of the entire camera module has become a technical problem that needs to be solved urgently by technicians in this technical field. Summary of the invention

[0004] In view of this, an object of the present invention is to overcome the deficiencies of the prior art and to provide a camera module to solve the technical problem of the large size of the ultra-macro camera module in the prior art.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A camera module, comprising:

[0007] a first lens, wherein a second lens for acquiring an image is disposed on the first lens;

[0008] A circuit board is arranged at the bottom of the first lens; and

[0009] An LED, electrically connected to the circuit board, and used for providing fill light to the second lens;

[0010] Wherein, the LED is located on the circuit board.

[0011] Based on the above technical solution, the camera module can also be improved as follows.

[0012] Optionally, it also includes a light guide with a through hole, the light guide is buckled on the second lens, the second lens is located in the through hole, the light guide extends to the LED position, and the LED supplements light to the second lens through the light guide.

[0013] Optionally, the bottom of the light guide completely covers the area of ​​the LED, or a mounting groove is provided at the bottom of the light guide, and the LED is embedded in the mounting groove.

[0014] Optionally, a mounting portion is provided on the light guide member, and the camera module is installed through the mounting portion.

[0015] Optionally, the light guide member is made of transparent PC or PMMA.

[0016] Optionally, four LEDs are provided, and the four LEDs are evenly distributed on a circuit board around the first lens.

[0017] Optionally, the circuit board is also electrically connected to a connector, and the circuit board obtains power and transmits signals through the connector.

[0018] Optionally, the circuit board is a rigid-flexible circuit board.

[0019] Optionally, the first lens is an autofocus lens.

[0020] Optionally, the second lens is a fixed focus lens.

[0021] Compared with the prior art, the camera module provided by the present invention has the following beneficial effects:

[0022] The present invention electrically connects the LED to the circuit board of the camera module, eliminating the need to design a separate circuit board for the LED. At the same time, the LED and the circuit board can share a connector drive, thereby reducing the volume of the entire camera module, reducing the number of components of the camera module, and expanding the installation positions of other components of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a schematic cross-sectional structural diagram of a camera module of the present invention;

[0025] Figure 2 is a first three-dimensional structural schematic diagram of the camera module of the present invention;

[0026] Figure 3 is a second three-dimensional structural schematic diagram of the camera module of the present invention;

[0027] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the circuit board;

[0028] Figure 5 It is a schematic cross-sectional structure diagram of another embodiment of the camera module of the present invention.

[0029] In the figure:

[0030] 1—first lens; 2—second lens; 3—circuit board; 4—LED; 5—light guide; 6—connector; 7—installation part; 8—bracket. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than comprehensive embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] Example:

[0033] The present invention provides a camera module to reduce the size of an ultra-macro camera. Figures 1 to 4 As shown, it includes a first lens 1, a second lens 2, a circuit board 3, an LED 4, and a light guide 5. Among them, the first lens 1 can be an autofocus lens, the second lens 2 can be a fixed focus lens, and the circuit board 3 can be a soft-hard combination circuit board. The circuit board 3 is electrically connected to a connector 6, so that the circuit board 3 can obtain power and transmit signals through the connector 6.

[0034] like Figure 1 and Figure 4 As shown, the first lens 1 is installed in the bracket 8, the bracket 8 is installed on the circuit board 3, the circuit board 3 is integrated with an imaging chip for receiving image signals, and the first lens 1 is located above the imaging chip. The second lens 2 is installed on the bracket 8 and stacked with the first lens 1 for acquiring images. The four LEDs 4 are respectively soldered on the circuit board 3 through SMT patches, so as to realize the electrical connection between the LEDs 4 and the circuit board 3. Among them, the four LEDs 4 are evenly distributed on the periphery of the first lens 1 to ensure the uniformity of the fill light effect of the LEDs 4 on the second lens 2.

[0035] like Figures 1 to 3 As shown, the light guide 5 is a bowl-shaped structure, and a through hole is provided at the bottom of the bowl of the bowl-shaped structure of the light guide 5. When the light guide 5 is buckled on the second lens 2, the second lens 2 passes through the through hole to obtain an image. The mouth of the bowl of the bowl-shaped structure of the light guide 5 extends downward to the position of the LED 4, and the inner wall of the light guide 5 fits with the second lens 2 and the bracket 8. Among them, the light guide 5 can be in contact with the LED 4 or close to the LED 4. The light emitted by the LED 4 is transmitted to the outside of the camera module through the end face of the other end of the light guide 5, and is used to fill in the light for the second lens 2.

[0036] like Figure 1 As shown, in particular, the projection area of ​​the bowl mouth of the bowl-shaped structure of the light guide 5 on the circuit board 3 is greater than or equal to the projection area of ​​the LED 4 on the circuit board 3, so that the light guide 5 can completely cover the light emitted by the LED 4 to avoid light leakage from the LED 4. As another embodiment, Figure 5 As shown, the bowl mouth of the bowl-shaped structure of the light guide 5 extends downward to a position that fits with the circuit board 3, and a mounting groove 51 is provided on the light guide 5, and the mounting groove 51 matches the outer contour of the LED 4, so that the LED 4 is embedded in the mounting groove 51. The design of the mounting groove 51 can not only prevent the LED 4 from leaking light, but also play a role in positioning the installation position of the light guide 5 through the LED 4.

[0037] like Figures 1 to 3 As shown, the light guide 5 is provided with a mounting portion 7 protruding from the outer wall of the light guide 5, and the camera module is mounted on the camera hole of the terminal device through the mounting portion 7. Among them, the material of the light guide 5 can be PC or PMMA. Of course, the light guide 5 can also be designed as a light guide column or a light guide tube, as long as it can guide the light emitted by the LED 4.

[0038] In the prior art, most ultra-macro cameras use a structure in which an auto-focus lens and a fixed focal length lens are superimposed, that is, the fixed focal length lens is arranged above the auto-focus lens. Since the ultra-macro camera is very close to the object to be photographed during shooting, the amount of light entering is insufficient, so it is necessary to design an LED for fill light on the camera module to meet the requirements of the ultra-macro lens shooting performance.

[0039] Generally, a flexible flat cable is designed between the autofocus lens and the fixed focal length lens. The flexible flat cable is electrically connected to the LED to make the LED emit light. The LED is located between the autofocus lens and the fixed focal length lens. In addition, a support plate for supporting the flexible flat cable is designed between the autofocus lens and the fixed focal length lens. The circuit board of the ultra-macro camera and the flexible flat cable are also connected to connectors. Therefore, the thickness of the support plate and the flexible flat cable, the installation position of the LED, and the installation position of the two connectors together cause the problem of the ultra-macro camera being larger in size.

[0040] The present invention directly integrates LED 4 on the circuit board 3 of the camera module, so that LED 4 and circuit board 3 share the same connector 6. Compared with the prior art, not only the flexible cable for driving LED 4 and the support plate for supporting the flexible cable are eliminated, but also the space for a connector is saved. At the same time, the position of LED 4 is closer to the circuit board 3, which minimizes the volume of the camera module and makes it easier to free up the installation space for other components.

[0041] In addition, the removal of the flexible cable used to drive the LED and the support plate used to support the flexible cable between the autofocus lens and the fixed focal length lens also makes the imaging of the camera module clearer. The removal of a connector design also makes the assembly of the camera module simpler and more convenient.

[0042] It is understandable that, according to the imaging requirements of the camera module, the first lens 1 and the second lens 2 in the present invention can also be designed as autofocus lenses or fixed focal length lenses. The present invention does not specifically limit the number of LEDs 4. According to the requirements of the fill light amount of the camera module, more LEDs 4 can be integrated on the circuit board 3.

[0043] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A camera module, characterized in that: include: A first lens (1), wherein a second lens (2) for acquiring an image is arranged on the first lens (1), the first lens (1) being an autofocus lens, and the second lens (2) being a fixed focus lens; a circuit board (3), arranged at the bottom of the first lens (1) and electrically connected to a connector (6); and An LED (4) electrically connected to the circuit board (3) and used to provide fill light for the second lens (2); The LED (4) is located on the circuit board (3) and shares the same connector (6) with the circuit board (3); the LED (4) and the circuit board (3) obtain power and transmit signals via the connector (6); A light guide (5), the light guide (5) being provided with a through hole and buckled onto the second lens (2), the second lens (2) being located in the through hole, the light guide (5) extending to the position of the LED (4), the LED (4) supplementing light for the second lens (2) through the light guide (5).

2. The camera module according to claim 1, characterized in that: The bottom of the light guide (5) completely covers the area of ​​the LED (4), or a mounting groove (51) is provided at the bottom of the light guide (5), and the LED (4) is embedded in the mounting groove (51).

3. The camera module according to claim 1, characterized in that: The light guide (5) is provided with a mounting portion (7), and the camera module is installed via the mounting portion (7).

4. The camera module according to claim 1, characterized in that: The material of the light guide (5) is transparent PC or PMMA.

5. The camera module according to claim 1, characterized in that: Four LEDs (4) are provided, and the four LEDs (4) are evenly distributed on the circuit board (3) at the periphery of the first lens (1).

6. The camera module according to claim 5, characterized in that: The circuit board (3) is a hard-flexible circuit board.

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