Dual-camera module

Abstract

The utility model discloses a double-camera module, comprising a photosensitive assembly, and the photosensitive assembly comprises a circuit board and a photosensitive chip electrically connected to the circuit board. The plurality of mechanism parts are arranged on the circuit board; the first lens group and the second lens group are configured on opposite sides of a photosensitive path of the photosensitive component, and the first lens group comprises a first lens and a first image sensor which is arranged below the first lens and is electrically connected with the sensing chip; the second lens group comprises a second lens and a second image sensor which is arranged below the second lens and electrically connected with the sensing chip, the second lens group and the first lens group are kept at the same height on the photosensitive path through a heightening part, and the heightening part is made of a light-proof material; according to the utility model, the material of the heightening part is set to be light-proof, light rays cannot penetrate through the heightening part and are reflected to the surface of the second image sensor, the generation of red light and light leakage is prevented, and the improvement cost is low.

Description

Technical Field

[0001] The utility model relates to the field of photography, in particular to a double-camera module capable of preventing red light and light leakage. Background Art

[0002] Currently, there are more and more artificial intelligence products using biometric technology. Most of the high-end products we commonly use, such as mobile phones, tablets, computers, learning machines, and televisions, have biometric functions. These electronic products basically rely on dual camera modules to identify objects to achieve certain functions. In order to realize the biometric function of the dual camera module, when designing the dual camera module, designers will use a dual lens combination of IR CAM and RGB CAM to achieve this function.

[0003] As attached Figure 6 As shown, because some IR CAM81 lenses and RGB CAM82 lenses have different heights, in order to achieve the same field of view of the two lenses, the designer will use a pad to keep the height of the IR CAM lens consistent with the height of the RGB CAM lens. In addition, existing electronic products with object recognition functions will be equipped with an additional auxiliary infrared LED light 4 to assist IRCAM81 in realizing face recognition, privacy protection and other functions in different environments.

[0004] Infrared IED has two wavebands: 850nm and 940nm. The 940nm waveband is commonly used, but the 940nm infrared LED has a wide penetration range and can penetrate thicker objects. The current lens pad 80 is made of conventional PCB material. The PCB substrate is glass fiber reinforced epoxy resin - FR-4. Glass fiber is light-transmitting. After being irradiated by red light LED, the picture taken by IR CAM will have light leakage, resulting in the failure of user face recognition and abnormal privacy protection function.

[0005] To solve the light leakage problem of the raised plate, the raised plate is currently painted black manually to block infrared light. However, in actual operation, it is found that manual painting has leakage, and it takes multiple coatings to prevent light leakage, which is inefficient and has a high risk of customer complaints. If automatic painting equipment is used, the equipment needs to be coated multiple times and has low efficiency, and the investment cost is too high, which is not practical.

[0006] In addition, in order to increase the strength of the PCB board, it is necessary to dispense reinforcing glue between the iron shell and the lens of IR CAM81 and RGB CAM82. However, since the iron shell is at a right angle, this will lead to inaccurate glue dispensing and may cause damage to the iron shell and the lens after contact with the glue dispenser. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and to provide a dual camera module with low improvement cost, simple structure, avoidance of light leakage, and ensure normal use of the biometric recognition function in the dual camera module.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a dual-camera module, comprising:

[0009] A photosensitive component, comprising a circuit board and a photosensitive chip electrically connected to the circuit board;

[0010] Mechanism components, a plurality of which are arranged on the circuit board;

[0011] A first lens group is arranged on the photosensitive path of the photosensitive component to convert the incident light into electric charge and store it, and the first lens group includes a first lens and a first image sensor arranged below the first lens and electrically connected to the sensing chip;

[0012] A second lens group is arranged on the light sensing path of the light sensing component and is located on one side of the first lens group, and is used to convert the incident light into electric charge and store it, wherein the second lens group includes a second lens and a second image sensor arranged below the second lens and electrically connected to the sensing chip, wherein the second lens group is kept at the same height as the first lens group on the light sensing path through a padding portion, and the padding portion is made of an opaque material;

[0013] The auxiliary infrared LED light is arranged on the light-sensing path of the light-sensing component and is located on the side of the second lens group opposite to the first lens group.

[0014] Preferably, the raised portion is disposed inside the circuit board.

[0015] Preferably, the raised portion is a black resin-based copper-clad laminate.

[0016] Preferably, the raising portion comprises a raising block, the upper surface of which is provided with a black resin-based copper-clad laminate, and the black resin-based copper-clad laminate is arranged along the length direction of the second influencing sensor and extends to a side close to the auxiliary infrared LED lamp.

[0017] Preferably, the first lens is an RGB lens, the first lens is arranged on the circuit board through a first support, and the first image sensor is arranged in the first support.

[0018] Preferably, the second lens is an IR lens, the second lens is disposed on the elevated portion via a second support, and the second image sensor is disposed in the second support.

[0019] Preferably, the circuit board is provided with a first iron shell and a second iron shell on one side of the first lens group and the second lens group, respectively, for shielding the mechanical components on the circuit board; the first iron shell and the second iron shell are inclined on one side relative to the first lens group and the second lens group; and reinforcing glue on the circuit board is also provided between the first shell and the first lens group and between the second shell and the second lens group.

[0020] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0021] 1. The dual-camera module of the utility model sets the material of the raised part to be opaque, so that after being irradiated by the auxiliary infrared LED light, the light cannot pass through the raised part and reflect the light to the surface of the second image sensor, avoiding bright light in the picture taken by the dual-camera module, ensuring the normal use of the biometric recognition function, and effectively preventing the generation of red light and light leakage. The structure is simple and the improvement cost is low.

[0022] 2. The first iron shell and the second iron shell on the opposite side of the first lens group and the second lens group are set to a slope shape to facilitate the dispensing machine to enter the circuit board for dispensing, the dispensing is accurate, and it can avoid damage to the dispensing needle, iron shell and lens group after collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0025] Figure 2 for Figure 1 A partial schematic diagram of the

[0026] Figure 3 A top view of an embodiment of the utility model;

[0027] Figure 4 for Figure 3 A partial schematic diagram of the

[0028] Figure 5 This is a structural schematic diagram of a padding portion in one embodiment of the utility model;

[0029] Figure 6 It is a structural schematic diagram of a dual camera module in the prior art;

[0030] Among them: photosensitive component 1, first lens group 2, second lens group 3, auxiliary infrared LED lamp 4, padding part 5, mechanism component 6, circuit board 10, first lens 20, first image sensor 21, first support 22, second lens 30, second image sensor 31, second support 32, padding block 50, resin-based copper clad laminate 51, first iron shell 60, second iron shell 61, padding plate 80, IRCAM 81, RGB CAM 82, PCB board 83, iron shell 84. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 should fall within the scope of protection of the present application.

[0032] The utility model provides a dual-camera module to solve the problems in the prior art that the dual-camera module may leak light due to the light-transmitting material of the pad plate, the manual operation is inefficient and may cause leakage, and the use of automated equipment requires multiple coatings and the investment cost is too high.

[0033] For ease of understanding, the specific process in the embodiments of the present application is described below. Figures 1 to 4 A dual camera module in the embodiment of the present application includes a photosensitive component 1, a first lens group 2, a second lens group 3 and an auxiliary infrared LED lamp 4; the photosensitive component 1 includes a circuit board 10 and a photosensitive chip (not shown) electrically connected to the circuit board, and a plurality of the mechanism components 6 are installed on the circuit board 10; the first lens group 2 is arranged on the photosensitive path of the photosensitive component 1 to convert the incident light into electric charge and store it, the first lens group 2 includes a first lens 20 and a first image sensor 21 arranged below the first lens 20 and electrically connected to the sensor chip; the second lens group 3 is arranged on The photosensitive component 1 is on the photosensitive path and is located on one side of the first lens group 2, for converting the incident light into electric charge and storing it. The second lens group 3 includes a second lens 30 and a second image sensor 31 arranged below the second lens 30 and electrically connected to the sensing chip, wherein the second lens group 3 maintains the same height as the first lens group 2 on the photosensitive path through a padding portion 5, and the padding portion 5 is made of an opaque material; the auxiliary infrared LED light 4 is arranged on the photosensitive path of the photosensitive component 1 and is located on the second lens group 3 on the opposite side of the first lens group 2.

[0034] The dual camera module of the present invention sets the material of the raised portion 5 to be opaque, so that after being irradiated by the auxiliary infrared LED lamp 4, the light cannot pass through the raised portion 5 and is reflected to the surface of the second image sensor 31, avoiding bright light in the pictures taken by the dual camera module, ensuring the normal use of the biometric recognition function, and effectively preventing the generation of red light and light leakage. The structure is simple and the improvement cost is low.

[0035] based on Figure 2 In this embodiment, the padding portion 5 is clamped on the upper surface of the circuit board 10, so that the padding portion 5 can be easily disassembled and installed, and padding portions of different heights can be selected to adapt to different types of lenses.

[0036] In addition, in the present embodiment, the material of the raised portion 5 is a black resin-based copper-clad laminate, that is, a black BT board. The BT board is a high-performance substrate material for PCB, which has good light-proof performance and low cost. When the raised portion 5 is made of a black resin-based copper-clad laminate, when the light irradiated by the auxiliary infrared LED lamp 4 is reflected on the black resin-based copper-clad laminate, the black resin-based copper-clad laminate will not reflect the light onto the second image sensor 31, thereby not affecting the normal use of the second image sensor 31.

[0037] based on Figure 2 and Figure 5 In order to further reduce costs and facilitate practical applications, in this embodiment, the padding portion 5 is configured to be a padding block 50. The material of the padding block 50 is arbitrary. At the same time, a black resin-based copper-clad board is clamped on the upper surface of the padding block 50. An insert-type clamping is adopted here. At the same time, the above-mentioned black resin-based copper-clad board is arranged directly below the second image sensor 31, and is arranged to extend to a side close to the auxiliary infrared LED lamp 4 along the length direction of the second image sensor 31. In this way, when light passes through the auxiliary infrared LED lamp 4 and is reflected on the black resin-based copper-clad board, due to the opacity of the black resin-based copper-clad board, there will be no light leakage. With the above-mentioned structural setting, since only a part of the black resin-based copper-clad board is used, the cost can be further reduced, and the requirements of different lens heights can be adapted by clamping black resin-based copper-clad boards of different thicknesses, and the application range is wide.

[0038] Specifically, based on Figure 2In this embodiment, the first lens 20 is an RGB lens, which is arranged on the circuit board 1 through the first support 22, and the first image sensor 21 is arranged in the first support 22; the second lens 30 is an IR lens, which is arranged on the raised portion 5 through the second support 32. After the light passes through the first lens 20 and the second lens 30, the first image sensor 21 and the second image sensor 22 convert the incident light into electric charge and store it.

[0039] In actual applications, BT boards are directly used to replace the original materials, which solves the problem of light leakage. The factory cancels the blackening operation, reduces the manufacturing cost, and improves the efficiency. The specific effects are shown in the following table:

[0040]

[0041] From the above table, we can see that one product can save $0.068, thus greatly reducing the corresponding cost.

[0042] based on Figure 2 and Figure 5 In this embodiment, the circuit board 10 is provided with a first iron shell 60 and a second iron shell 61 on one side of the first lens group 2 and the second lens group 3 for shielding a plurality of mechanism components 6 on the circuit board 10; the first iron shell 60 and the second iron shell 61 are inclined on one side relative to the first lens group 2 and the second lens group 3.

[0043] As the circuit board 10 becomes narrower and thinner, PCB reinforcing glue needs to be applied on the circuit board 10 between the first iron shell 60 and the first lens group 2 and between the second iron shell 61 and the second lens group 3, that is, glue is applied in the areas of S1 and S2. In addition to increasing the strength of the PCB, the reinforcing glue also has the function of shielding the auxiliary infrared LED light. In this embodiment, the first iron shell 60 and the second iron shell 61 are arranged to be sloped on one side relative to the first lens group and the second lens group, so that the glue dispensing machine can enter the glue dispensing areas S1 and S2 for glue dispensing. In this way, the glue dispensing position is accurate and will not cause damage to the iron shell or the lens group.

[0044] In actual use, it is found that after changing the iron shell to a slope design, the dispensing defect rate is reduced to 0%, and the module scrapping caused by collision is reduced at the same time, which improves product quality and operation efficiency. Based on the total shipment volume of 45KK, the total saving benefit is: 45000000*39.5*(180 / 3600)*0.06=5332500RMB.

[0045] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A dual camera module, It is characterized in that include: A photosensitive component, comprising a circuit board and a photosensitive chip electrically connected to the circuit board; Mechanism components, a plurality of which are arranged on the circuit board; A first lens group is arranged on the photosensitive path of the photosensitive component to convert incident light into electric charge and store it, and the first lens group includes a first lens and a first image sensor arranged below the first lens and electrically connected to the photosensitive chip; A second lens group is arranged on the light-sensing path of the light-sensing component and is located on one side of the first lens group, and is used to convert the incident light into electric charge and store it, wherein the second lens group includes a second lens and a second image sensor arranged below the second lens and electrically connected to the light-sensing chip, wherein the second lens group is kept at the same height as the first lens group on the light-sensing path through a padding portion, and the padding portion is made of an opaque material; The auxiliary infrared LED light is arranged on the light-sensing path of the light-sensing component and is located on the side of the second lens group opposite to the first lens group.

2. The dual camera module according to claim 1, Features: The raised portion is clamped in the circuit board.

3. The dual camera module according to claim 1, Features: The raised portion is a black resin-based copper-clad laminate.

4. The dual camera module according to claim 1, Features: The raising portion includes a raising block, the upper surface of which is provided with a black resin-based copper-clad board, and the black resin-based copper-clad board is arranged along the length direction of the second image sensor and extends to a side close to the auxiliary infrared LED lamp.

5. The dual camera module according to claim 1, Features: The first lens is an RGB lens, the first lens is arranged on the circuit board through a first support, and the first image sensor is arranged in the first support.

6. The dual camera module according to claim 1, Features: The second lens is an IR lens, the second lens is arranged on the raised portion through a second support, and the second image sensor is arranged in the second support.

7. The dual camera module according to claim 1, Features: The circuit board is provided with a first iron shell and a second iron shell on one side of the first lens group and the second lens group, respectively, for shielding the mechanisms on the circuit board; the first iron shell and the second iron shell are inclined on one side relative to the first lens group and the second lens group; reinforcing glue on the circuit board is also provided between the first iron shell and the first lens group, and between the second iron shell and the second lens group.

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