Camera modules and interaction devices

Abstract

The present invention relates to a camera module and an interaction device, both of which belong to the technical field of electronic devices. The camera module includes an infrared sensor (1), a color sensor (2), an infrared auxiliary lighting lamp (3), an image processor (4), and a white-light auxiliary lighting lamp (5). The infrared sensor (1) is electrically connected to the color sensor (2), the infrared auxiliary lighting lamp (3), and the image processor (4), and the image processor (4) is further electrically connected to the white-light auxiliary lighting lamp (5). The infrared auxiliary lighting lamp (3) is used to provide auxiliary lighting for the infrared sensor (1), and the white-light auxiliary lighting lamp (5) is used to provide auxiliary lighting for the color sensor (2), and the infrared sensor (1) and the color sensor (2) have staggered exposure times. The image processor (4) is configured to control the staggered illumination of the infrared auxiliary lighting lamp (3) and the white-light auxiliary lighting lamp (5).

Description

[Technical Field]

[0001] This disclosure claims priority to a Chinese patent application filed on May 15, 2023, bearing application number 202321157190.9 and entitled "Camera Module and Interaction Device," the entire contents of which are incorporated herein by reference.

[0002] The embodiments of the present disclosure relate to a camera module and an interaction device. [Background technology]

[0003] The camera module can be applied to an identification module for an interaction device, etc., and is used to collect and identify information. When the light is relatively dark, the camera module will provide supplementary illumination, so that the camera module can obtain clearer images. Summary of the Invention [Means for solving the problem]

[0004] At least one embodiment of the present disclosure provides a camera module, the camera module including an infrared sensor, a color sensor, an infrared auxiliary lighting lamp, an image processor, and a white-light auxiliary lighting lamp, the infrared sensor being electrically connected to the color sensor, the infrared auxiliary lighting lamp, and the image processor, the image processor being further electrically connected to the white-light auxiliary lighting lamp, the infrared auxiliary lighting lamp being used to provide auxiliary lighting to the infrared sensor, and the white-light auxiliary lighting lamp being used to provide auxiliary lighting to the color sensor, the infrared sensor and the color sensor being exposed to light with a time lag, and the image processor being configured to control the infrared auxiliary lighting lamp and the white-light auxiliary lighting lamp to provide auxiliary lighting with a time lag. [Brief explanation of the drawings]

[0005] [Figure 1] FIG. 2 is a schematic diagram of current flow in a camera module shown in an embodiment of the present disclosure. [Figure 2] 1 is a structural schematic diagram of a camera module shown in an embodiment of the present disclosure. [Figure 3] FIG. 2 is a signal transmission schematic diagram of the camera module shown in the embodiment of the present disclosure. [Figure 4] FIG. 2 is a signal transmission schematic diagram of the camera module shown in the embodiment of the present disclosure. [Figure 5] FIG. 2 is a schematic diagram of current flow in a camera module shown in an embodiment of the present disclosure. [Figure 6] FIG. 2 is a signal schematic diagram of the camera module shown in the embodiment of the present disclosure. [Figure 7] FIG. 2 is a signal schematic diagram of the camera module shown in the embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0006] In the related art, a camera module includes an infrared sensor, a color sensor, an infrared auxiliary lighting lamp, an image processor, and a white-light auxiliary lighting lamp. The infrared sensor and the infrared auxiliary lighting lamp are electrically connected. When the light is relatively dim and the infrared sensor is exposed, the infrared auxiliary lighting lamp is in an auxiliary lighting state, allowing the infrared sensor to capture clearer black-and-white images. When the color sensor is exposed, the white-light auxiliary lighting lamp is in an auxiliary lighting state, allowing the color sensor to capture clearer color images. Because infrared light is invisible, the infrared auxiliary lighting lamp generally uses a pulsed periodic lighting method, and the human eye cannot detect the flashing light. White light is visible light, and if the white-light auxiliary lighting lamp were in an auxiliary lighting state only when the color sensor is exposed, the flashing white light would cause discomfort to the human eye. Therefore, to avoid flashing lights and ensure the auxiliary lighting effect, the white light is usually used in a continuous lighting mode for auxiliary lighting.

[0007] However, because the white-light auxiliary lighting lamp in the related art is always on when the light is relatively dim, situations may arise where both the white-light auxiliary lighting lamp and the infrared auxiliary lighting lamp are in auxiliary lighting mode at the same time. In this case, the maximum current generated by the auxiliary lighting lamp in the camera module is the sum of the current when the white-light auxiliary lighting lamp is in auxiliary lighting mode and the current when the color auxiliary lighting lamp is in auxiliary lighting mode. As shown in FIG. 1, the abscissa in the diagram is time T and the ordinate is current I. The solid line graph represents the current in the infrared auxiliary lighting lamp, and m represents the current value when the infrared auxiliary lighting lamp is in auxiliary lighting mode. The dashed line graph represents the current in the white-light auxiliary lighting lamp, and n represents the current value when the white-light auxiliary lighting lamp is in auxiliary lighting mode. As can be seen from FIG. 1, when the infrared auxiliary lighting lamp and the white-light auxiliary lighting lamp are turned on simultaneously, the driving currents of both lamps are superimposed, i.e., the maximum current generated by the two auxiliary lighting lamps is m+n. Therefore, there are relatively high requirements for the power supply capability of the interaction device, which further affects the integration and popularization of camera modules in the interaction device.

[0008] In view of the above technical problems, as shown in FIG. 2 , an embodiment of the present disclosure provides a camera module, which includes an infrared sensor 1, a color sensor 2, an infrared auxiliary lighting lamp 3, an image processor 4, and a white-light auxiliary lighting lamp 5. The infrared sensor 1 is electrically connected to the color sensor 2, the infrared auxiliary lighting lamp 3, and the image processor 4, and the image processor 4 is further electrically connected to the white-light auxiliary lighting lamp 5. The infrared auxiliary lighting lamp 3 is used to provide auxiliary lighting to the infrared sensor 1, and the white-light auxiliary lighting lamp 5 is used to provide auxiliary lighting to the color sensor 2, and the infrared sensor 1 and the color sensor 2 are configured to perform exposure staggered, and the image processor 4 is configured to control the infrared auxiliary lighting lamp 3 and the white-light auxiliary lighting lamp 5 to provide auxiliary lighting staggered.

[0009] The infrared auxiliary lighting lamp 3 and the white light auxiliary lighting lamp 5 provide auxiliary lighting at different times, i.e., the infrared auxiliary lighting lamp 3 and the white light auxiliary lighting lamp 5 are not turned on at the same time. In this way, the peak current in the camera module is the driving current of the infrared auxiliary lighting lamp 3 or the driving current of the white light auxiliary lighting lamp 5, so that the peak current in the camera module is relatively small.

[0010] A more detailed exemplary description of the camera module provided by the embodiments of the present disclosure will now be provided.

[0011] As shown in Fig. 2, the camera module includes an infrared sensor 1, a color sensor 2, an infrared auxiliary lighting lamp 3, an image processor 4, and a white-light auxiliary lighting lamp 5. The infrared sensor 1 is electrically connected to the color sensor 2, the infrared auxiliary lighting lamp 3, and the image processor 4, and the image processor 4 is further electrically connected to the white-light auxiliary lighting lamp 5, and the infrared sensor 1 and the color sensor 2 perform exposure with a time lag. As shown in Figs. 3 and 4, the infrared sensor 1 is configured to output a first control signal a to the infrared auxiliary lighting lamp 3 and the image processor 4, where when the infrared sensor 1 is in an exposure state, the first control signal a is in a high state and controls the infrared auxiliary lighting lamp 3 to provide auxiliary illumination. The image processor 4 is configured to convert the first control signal a into a second control signal b and send the second control signal b to the white light auxiliary lighting lamp 5, where when the color sensor 2 is in an exposure state, the second control signal b is in a high level state and controls the white light auxiliary lighting lamp 5 to provide auxiliary illumination, and the first control signal a and the second control signal b are not in a high level state at the same time.

[0012] Here, the camera module may be used for palm scan authentication, code scan, face authentication, etc. Therefore, the camera module provided by the embodiments of the present disclosure may further be referred to as a palm scan authentication module, a code scan module, or a face authentication module, etc.

[0013] The embodiments of the present disclosure do not limit the specific type of the camera module, and in some examples, the camera module is applied to a payment device, and a user can perform palm scan authentication, code scan, or facial authentication through the camera module to complete a payment. In other examples, the camera module can also be applied to a door control device, and a user can perform palm scan authentication, code scan, or facial authentication through the camera module to open the door control.

[0014] The infrared sensor 1 may be called an IR camera sensor (Infra Red camera sensor), and the color sensor 2 may be called an RGB camera sensor (Red Green Blue camera sensor). The infrared sensor 1 and the color sensor 2 are used to collect information, such as code information, face information, and palm scan information. The infrared sensor 1 generates a black and white image after acquiring the information, and the color sensor 2 generates a color image after acquiring the information. The camera module can acquire more comprehensive information by combining the images generated by the infrared sensor 1 and the color sensor 2, which is advantageous for quick identification of information.

[0015] The infrared auxiliary lighting lamp 3 may be called an IR LED (Infra Red Light Emitting Diode), and the white light auxiliary lighting lamp 5 may be called a white light LED (Light Emitting Diode). The infrared auxiliary lighting lamp 3 and the white light auxiliary lighting lamp 5 can be driven by a driving circuit or a power supply chip.

[0016] The image processor 4 may be called an ISP (Image Signal Processing) chip, and is a CPU (Central Processing Unit) chip with image processing functions. After receiving the first control signal a, the image processor 4 can generate a second control signal b based on the first control signal a and send the second control signal b to the white light auxiliary lighting lamp 5.

[0017] The first control signal a and the second control signal b are both PWM (Pulse Width Modulation) waves.

[0018] In the camera module provided by the embodiment of the present disclosure, the infrared auxiliary lighting lamp 3 is turned on when the first control signal a is in a high state after receiving the first control signal a sent from the infrared sensor 1. The white-light auxiliary lighting lamp 5 is turned on when the second control signal b is in a high state after receiving the second control signal b sent from the image processor 4. The first control signal a and the second control signal b are never in a high state at the same time, so the infrared auxiliary lighting lamp 3 and the white-light auxiliary lighting lamp 5 are never turned on simultaneously, i.e., the infrared auxiliary lighting lamp 3 and the white-light auxiliary lighting lamp 5 can provide auxiliary lighting at different times. Therefore, the peak current appearing in the camera module is the current when the infrared auxiliary lighting lamp 3 is in the auxiliary lighting state or the current when the white-light auxiliary lighting lamp 5 is in the auxiliary lighting state, and there is no overlap between the two currents. Therefore, the peak current in the camera module is relatively small, which reduces the demand for power supply capability of the interaction device, and is further advantageous for the integration and widespread use of the camera module in the interaction device.

[0019] For example, as shown in FIG. 5, the abscissa in the diagram represents time T, the ordinate represents current I, and the solid line represents the current in the infrared auxiliary lighting lamp 3, where m is the current value when the infrared auxiliary lighting lamp 3 is in the auxiliary lighting state. The dashed line represents the current in the white light auxiliary lighting lamp 5, where n is the current value when the white light auxiliary lighting lamp 5 is in the auxiliary lighting state. Because the infrared auxiliary lighting lamp 3 and the white light auxiliary lighting lamp 5 are not turned on simultaneously, the currents of the infrared auxiliary lighting lamp 3 and the white light auxiliary lighting lamp 5 do not overlap, and therefore the maximum current generated by the two auxiliary lighting lamps is m or n. In FIG. 1, since m>n, the maximum current generated by the two auxiliary lighting lamps is m, i.e., the peak current in the camera module is the current value when the infrared auxiliary lighting lamp 3 is in the auxiliary lighting state.

[0020] An exemplary method for realizing the auxiliary illumination by the infrared auxiliary illumination lamp 3 and the white light auxiliary illumination lamp 5 at different times will be described below.

[0021] In some examples, as shown in FIG. 6 , the falling edge of the first control signal a overlaps with the rising edge of the second control signal b. The time corresponding to the falling edge of the first control signal a is the time when the first control signal a changes from high to low, i.e., the time when the infrared auxiliary lighting lamp 3 changes from the auxiliary lighting state to the off state. The time corresponding to the rising edge of the second control signal b is the time when the second control signal b changes from low to high, i.e., the time when the white-light auxiliary lighting lamp 5 changes from the off state to the auxiliary lighting state. Because the falling edge of the first control signal a overlaps with the rising edge of the second control signal b, the white-light auxiliary lighting lamp 5 can be turned on only when the infrared auxiliary lighting lamp 3 is turned off, thereby precisely controlling the infrared auxiliary lighting lamp 3 and the white-light auxiliary lighting lamp 5 to provide staggered auxiliary lighting.

[0022] Of course, in some other examples, the rising edge of the second control signal b may lag behind the falling edge of the second control signal a, so that the white light auxiliary lighting lamp 5 can be turned on only after the infrared auxiliary lighting lamp 3 has been turned off.

[0023] Since infrared light is invisible, the auxiliary lighting time and frequency of the infrared auxiliary lighting lamp 3 do not affect the human eye, and in order to reduce the power consumption of the infrared auxiliary lighting lamp 3, the infrared auxiliary lighting lamp 3 only needs to provide auxiliary lighting when the infrared sensor 1 is exposed to light. Since the on / off of the infrared auxiliary lighting lamp 3 is controlled by the first control signal a, the auxiliary lighting time of the infrared auxiliary lighting lamp 3 can be controlled by controlling the duty ratio of the first control signal a.

[0024] In some examples, the duty ratio of the first control signal a is 5% to 10%, and may be, for example, 8%. Here, the duty ratio of the first control signal a represents the proportion of the time that the first control signal a is at a high level to the total time within one pulse cycle period. As shown in FIG. 7, the duty ratio of the first control signal a is t2 / t1.

[0025] As can be seen, the proportion of the power-on time (auxiliary lighting time) of the infrared auxiliary lighting lamp 3 to the total time within one pulse cycle period is the same as the duty ratio of the first control signal a. That is, the duty ratio of the infrared auxiliary lighting lamp 3 is also 5% to 10%.

[0026] Because white light is visible light, the white light auxiliary lighting lamp 5 cannot provide auxiliary illumination only when the color sensor 2 is exposed to light, otherwise it would irritate the human eyes. At the same time, it is necessary to further reduce the power-on time of the white light auxiliary lighting lamp 5. Because the on-time of the white light auxiliary lighting lamp 5 is controlled by the second control signal b, the power-on time of the white light auxiliary lighting lamp 5 can be controlled by setting the duty ratio of the second control signal b.

[0027] In some examples, the duty ratio of the second control signal b is 60% to 70%, and for example, the duty ratio of the second control signal b may be 60%. Here, the duty ratio of the second control signal b represents the proportion of the time that the second control signal b is at a high level to the total time within one pulse cycle period. As shown in FIG. 7, the duty ratio of the second control signal b is t4 / t3.

[0028] As can be seen, the proportion of the power-on time (auxiliary lighting time) of the white light auxiliary lighting lamp 5 to the total time within one pulse cycle period is the same as the duty ratio of the second control signal b. That is, the duty ratio of the white light auxiliary lighting lamp 5 is also 60% to 70%. In this way, the white light auxiliary lighting lamp 5 can reduce its power consumption by 30% to 40%. Furthermore, when the duty ratio of the white light auxiliary lighting lamp 5 is reduced to 60% to 70%, the white light becomes softer in the subjective sense of vision, thereby reducing irritation to the human eye.

[0029] As can be seen, only when the sum of the duty ratio of the first control signal a and the duty ratio of the second control signal b is less than or equal to 100%, can the red auxiliary lighting lamp 3 and the white auxiliary lighting lamp 5 be in the auxiliary lighting state at the same time.

[0030] In some examples, the frequency of the second control signal b is 80 Hz to 100 Hz to reduce the impact on the human eyes caused by the periodic supplemental lighting of the white light supplemental lighting lamp 5. For example, the frequency of the second control signal b may be 100 Hz.

[0031] When the light is relatively dim, the exposure of the infrared sensor 1 requires supplemental lighting from the infrared auxiliary lighting lamp 3, and the exposure of the color sensor 2 requires supplemental lighting from the white light auxiliary lighting lamp 5. Therefore, if the infrared auxiliary lighting lamp 3 and the white light auxiliary lighting lamp 5 are to be used to provide supplemental lighting at different times, it is also necessary to set the infrared sensor 1 and the color sensor 2 to have different exposure times. An exemplary method for realizing the exposure of the infrared sensor 1 and the color sensor 2 at different times will be described below.

[0032] 3 , the infrared sensor 1 is further configured to generate a frame synchronization signal c, generate a first control signal a based on the frame synchronization signal c, and send the frame synchronization signal c to the color sensor 2, where the first control signal a is further used to control the exposure of the infrared sensor 1. When the first control signal a is in a high-level state, the infrared sensor 1 is exposed. The color sensor 2 is configured to receive the frame synchronization signal c and generate a third control signal d based on the frame synchronization signal c, where the third control signal d is used to control the exposure of the color sensor 2. When the third control signal d is in a high-level state, the color sensor 2 is exposed, and the third control signal d and the first control signal a are not in a high-level state at the same time.

[0033] Here, the frame synchronization signal c may be called an FSIN signal. The frame synchronization signal can accurately control the exposure of the infrared sensor 1 and the color sensor 2 with a time lag.

[0034] Note that the frame synchronization signal c only functions as a reference for staggering the exposure times of the infrared sensor 1 and the color sensor 2, and does not actually control the exposure times of the infrared sensor 1 and the color sensor 2. Therefore, the frame synchronization signal c may be transmitted by the infrared sensor 1 to the color sensor 2, or may be transmitted by the color sensor 2 to the infrared sensor 1.

[0035] 4 , the color sensor 2 is further configured to generate a frame synchronization signal c, generate a third control signal d based on the frame synchronization signal c, and send the frame synchronization signal c to the infrared sensor 1, where the third control signal d is used to control the exposure of the color sensor 2. When the third control signal d is at a high level, the color sensor 2 is exposed. The infrared sensor 1 is configured to receive the frame synchronization signal c and generate a first control signal a based on the frame synchronization signal c, where the first control signal a is further used to control the exposure of the infrared sensor 1, where when the first control signal a is at a high level, the infrared sensor 1 is exposed, and the third control signal d and the first control signal a are not at a high level simultaneously.

[0036] The infrared sensor 1 and the color sensor 2 use the same frame synchronization signal c as a reference, and thus the exposure of the infrared sensor 1 and the color sensor 2 can be accurately controlled with a time lag.

[0037] As shown in Figure 6, the register in infrared sensor 1 is set based on the high level of the current frame synchronization signal c, and the delay of the high level of first control signal a is set to appear later than the high level of frame synchronization signal c. The register in color sensor 2 can be set based on the high level of the current frame synchronization signal c, and the delay of the high level of third control signal d can be set to appear later than the high level of frame synchronization signal c. The delay time of third control signal d is longer than the delay time of first control signal a, so that infrared sensor 1 is exposed earlier and color sensor 2 is exposed later. This may also be understood as the delay of the high level of first control signal a appearing later than the high level of frame synchronization signal c, and the appearance of the high level of third control signal d being earlier than the appearance of the high level of frame synchronization signal c.

[0038] In some examples, as shown in FIG. 5, the current when the infrared auxiliary lighting lamp 3 is in the auxiliary lighting state is greater than the current when the white light auxiliary lighting lamp 5 is in the auxiliary lighting state, i.e., m>n.

[0039] Illustratively, the current when the white light auxiliary lighting lamp 5 is in the auxiliary lighting state is 20 mA.

[0040] In some examples, the number of infrared auxiliary lighting lamps 3 is 8-12, and the number of white light auxiliary lighting lamps 5 is 8-12.

[0041] The reduced peak current and power of the camera module provided by the embodiments of the present disclosure are calculated below.

[0042] Because the current drawn by the infrared auxiliary lighting lamp 3 when it is in the auxiliary lighting state is greater than the current drawn by the white-light auxiliary lighting lamp 5 when it is in the auxiliary lighting state, the reduction in the peak current of the auxiliary lighting lamp in the camera module is the current value when the white-light auxiliary lighting lamp 5 is in the auxiliary lighting state. Assume that there are 12 white-light auxiliary lighting lamps 5, the power supply voltage is 5V, the power supply efficiency is 85%, the conduction voltage of the white-light auxiliary lighting lamp 5 is 3V, and the conduction current of the white-light auxiliary lighting lamp 5 is 20mA. The reduced peak current is 20mA x 12 pcs x 3V / (5V x 85%) = 169.5mA. Assuming that the duty cycle of the second control signal is 60%, the power saved by the 12 white-light auxiliary lighting lamps 5 is 20mA x 12 pcs x 3V x 40% / 85% = 339mW.

[0043] An embodiment of the present disclosure further provides an interaction device including the camera module.

[0044] Here, the interaction device may be a device used to identify information, such as a payment device and an identity identification device.

[0045] When a user needs to use the interaction device to identify information, if the surrounding environment is dark, the controller of the interaction device can control the infrared sensor 1 in the camera module to send a first control signal a to the infrared auxiliary lighting lamp and the image processor 4 to send a second control signal b to the white light auxiliary lighting lamp 5, so that the interaction device can obtain clearer images and more quickly identify information. Because the peak current of the auxiliary lighting lamp in the camera module is relatively low, the camera module can be integrated even if the power supply capacity of the interaction device is relatively weak.

[0046] At the same time, since the peak current of the auxiliary lighting lamp is relatively low, the interaction device has relatively good EMC (Electro Magnetic Compatibility) performance, and the interaction device does not need to have a relatively high power supply capacity, which can save the material cost of the interaction device.

[0047] The above are only optional embodiments of the present disclosure, and are not used to limit the present disclosure, and any modifications, equivalent replacements, improvements, etc. made within the principles of the present disclosure should all fall within the protection scope of the present disclosure. [Explanation of symbols]

[0048] 1. Infrared sensor 2 color sensors 3 Infrared auxiliary lighting lamp 4 Image Processor 5 white light auxiliary lighting lamps, a. First control signal b. Second control signal c Frame sync signal d Third control signal.

Claims

1. A camera module including an infrared sensor (1), a color sensor (2), an infrared auxiliary lighting lamp (3), an image processor (4), and a white light auxiliary lighting lamp (5); The infrared sensor (1) is electrically connected to the color sensor (2), the infrared auxiliary lighting lamp (3), and the image processor (4), and the image processor (4) is further electrically connected to the white light auxiliary lighting lamp (5); The infrared auxiliary lighting lamp (3) is used to provide auxiliary illumination to the infrared sensor (1), and the white light auxiliary lighting lamp (5) is used to provide auxiliary illumination to the color sensor (2), the infrared sensor (1) and the color sensor (2) are exposed to light with a time lag, and the image processor (4) is configured to control the time lag between the infrared auxiliary lighting lamp (3) and the white light auxiliary lighting lamp (5).

2. The infrared sensor (1) is configured to output a first control signal (a) to the infrared auxiliary lighting lamp (3) and the image processor (4), and when the infrared sensor (1) is in an exposure state, the first control signal (a) is in a high level state and controls the infrared auxiliary lighting lamp (3) to provide auxiliary illumination; 2. The camera module according to claim 1, wherein the image processor (4) is configured to convert the first control signal (a) into a second control signal (b) and transmit the second control signal (b) to the white-light auxiliary lighting lamp (5), wherein the first control signal (a) and the second control signal (b) are not simultaneously in a high-level state, and when the color sensor (2) is in an exposure state, the second control signal (b) is in a high-level state and controls the white-light auxiliary lighting lamp (5) to provide auxiliary illumination.

3. 3. The camera module of claim 2, wherein a falling edge of the first control signal (a) coincides with a rising edge of the second control signal (b).

4. 4. The camera module according to claim 2, wherein the duty ratio of the first control signal (a) is 5% to 10%.

5. 4. The camera module according to claim 2, wherein the duty ratio of the second control signal (b) is 60% to 70%.

6. 4. The camera module according to claim 2, wherein the frequency of the second control signal (b) is 80 Hz to 100 Hz.

7. The infrared sensor (1) is further configured to generate a frame synchronization signal (c), generate the first control signal (a) based on the frame synchronization signal (c), and transmit the frame synchronization signal (c) to the color sensor (2), and when the first control signal (a) is in a high level state, the infrared sensor (1) exposes; 4. The camera module of claim 2, wherein the color sensor (2) is configured to receive the frame synchronization signal (c) and generate a third control signal (d) based on the frame synchronization signal (c), the third control signal (d) and the first control signal (a) are not simultaneously in a high level state, and the color sensor (2) is exposed when the third control signal (d) is in a high level state.

8. The color sensor (2) is further configured to generate a frame synchronization signal (c), generate the third control signal (d) based on the frame synchronization signal (c), and transmit the frame synchronization signal (c) to the infrared sensor (1), and when the third control signal (d) is in a high level state, the color sensor (2) is exposed to light; 4. The camera module according to claim 2, wherein the infrared sensor (1) is configured to receive the frame synchronization signal (c) and generate the first control signal (a) based on the frame synchronization signal (c), and the third control signal (d) and the first control signal (a) are not simultaneously in a high level state, and the infrared sensor (1) is exposed when the first control signal (a) is in a high level state.

9. 4. The camera module according to claim 2, wherein the current when the infrared auxiliary lighting lamp (3) is in the auxiliary lighting state is greater than the current when the white light auxiliary lighting lamp (5) is in the auxiliary lighting state.

10. An interaction device comprising a camera module according to any one of claims 1 to 9.

Images