Camera and endoscope system with liquid lens

Abstract

The utility model relates to medical instrument technical field especially, more particularly to a kind of camera and endoscope system with liquid lens, the camera includes: in incident optical axis direction, first optical lens group, liquid lens, second optical lens group and image sensor are sequentially and interval arranged;Drive circuit, drive circuit is connected in liquid lens, drive circuit is used to output zoom signal to liquid lens;Liquid lens is used to carry out curvature adjustment when receiving zoom signal.Compared with the zoom of the prior art using mechanical mechanism, the utility model can not need to set mechanical mechanism, and then simplify structure, so that user is more portable when holding, improves user experience.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a camera and endoscope system equipped with a liquid lens. Background Technology

[0002] Currently, medical endoscope systems typically acquire images using cameras. This means that several optical lens groups and image sensors are usually placed at intervals inside the camera. Imaging light passes through each optical lens group in sequence and is then projected onto the image sensor to complete image acquisition.

[0003] However, existing cameras generally achieve zoom through mechanical means. This involves a mechanical structure within the camera that moves the optical lens group, changing its relative distance to other optical lenses, thus achieving zoom. Because of this mechanical mechanism, the camera is relatively large and heavy, making it inconvenient for users to hold and resulting in a poor user experience. Utility Model Content

[0004] The main purpose of this invention is to provide a camera and endoscope system with a liquid lens, which aims to solve the technical problem that the use of mechanical mechanisms to achieve zoom in the prior art results in a large overall size and weight of the camera, which makes it inconvenient for users to hold and leads to a poor user experience.

[0005] To achieve the above objectives, this utility model proposes a camera equipped with a liquid lens, the camera comprising:

[0006] A first optical lens group, a liquid lens, a second optical lens group, and an image sensor are arranged sequentially and at intervals along the incident optical axis.

[0007] A driving circuit is connected to the liquid lens and is used to output a zoom signal to the liquid lens.

[0008] The liquid lens is used to adjust curvature upon receiving the zoom signal.

[0009] In one embodiment, the driving circuit includes: a driver interface module, a lens driving module, and a lens interface module;

[0010] The driver interface module is connected to the lens drive module and the camera host in the endoscope system, respectively. The driver interface module is used to transmit the drive signal output by the camera host to the lens drive module.

[0011] The lens driving module is connected to the liquid lens through the lens interface module. The lens driving module is used to convert the driving signal into a zoom signal and transmit the zoom signal to the liquid lens through the lens interface module.

[0012] In one embodiment, the driving circuit further includes: a main control module;

[0013] The main control module is connected to the driver interface module and the lens drive module respectively. The main control module is used to convert the drive signal into a control signal and transmit the control signal to the lens drive module.

[0014] The lens drive module is also used to convert the control signal into a zoom signal.

[0015] In one embodiment, the driving circuit further includes a temperature acquisition module;

[0016] The temperature acquisition module is connected to the main control module. The temperature acquisition module is used to acquire the current temperature of the camera and transmit the generated temperature signal to the main control module.

[0017] The main control module is also used to transmit the temperature signal to the camera host through the driver interface module, so that the camera host outputs a drive signal when it detects that the current temperature has not reached the preset temperature threshold.

[0018] In one embodiment, the temperature acquisition module includes: a temperature sensor, a first resistor, a first capacitor, and a second capacitor;

[0019] The chip select terminal of the temperature sensor is connected to the main control module. The ground terminal of the temperature sensor is grounded. The communication terminal of the temperature sensor is connected to the second terminal of the first resistor. The first terminal of the first resistor is connected to the main control module. The clock terminal of the temperature sensor is connected to the main control module. The power supply terminal of the temperature sensor is connected to the power supply, the first terminal of the first capacitor, and the first terminal of the second capacitor. The second terminal of the first capacitor is connected to the second terminal of the second capacitor. The second terminal of the second capacitor is grounded.

[0020] In one embodiment, the driving circuit further includes a voltage conversion module;

[0021] The driver interface module is also connected to an external power supply and the voltage conversion module. The driver interface module is used to transmit the external voltage provided by the external power supply to the voltage conversion module.

[0022] The voltage conversion module is connected to the lens interface module. The voltage conversion module is used to convert the external voltage and transmit the obtained lens power supply voltage to the liquid lens through the lens interface module for power supply.

[0023] In one embodiment, the voltage conversion module includes: a voltage conversion chip, a third to a ninth capacitor, a first inductor, and a second to a seventh resistor;

[0024] The enable terminal of the voltage conversion chip is connected to the second terminal of the third capacitor, the second terminal of the second resistor, and the second terminal of the third resistor, respectively. The first terminal of the third capacitor is connected to the first terminal of the second resistor, and the first terminal of the third capacitor is also grounded. The first terminal of the third resistor is connected to the external power supply. The ground terminal of the voltage conversion chip is grounded. The output terminal of the voltage conversion chip is connected to the first terminal of the fourth capacitor and the second terminal of the first inductor, respectively. The second terminal of the fourth capacitor is connected to the second terminal of the fourth resistor, respectively. The first terminal of the first inductor is connected to the first terminals of the fifth capacitor, the sixth capacitor, the seventh capacitor, the fifth resistor, and the lens, respectively. The interface module is connected as follows: the first end of the fourth resistor is connected to the second end of the fifth capacitor, the second end of the sixth capacitor, the second end of the seventh capacitor, and the second end of the fifth resistor. The second end of the fifth resistor is also grounded. The input end of the voltage conversion chip is connected to the first end of the eighth capacitor, the first end of the ninth capacitor, and the external power supply. The second end of the eighth capacitor is connected to the second end of the ninth capacitor. The second end of the ninth capacitor is grounded. The feedback end of the voltage conversion chip is connected to the second end of the sixth resistor and the first end of the seventh resistor. The first end of the sixth resistor is grounded. The second end of the seventh resistor is connected to the lens interface module.

[0025] In one embodiment, the driving circuit further includes a filtering module;

[0026] The filtering module is connected to the driver interface module and the lens driver module respectively. The filtering module is used to filter the external voltage provided by the external power supply and transmit the obtained driver chip power supply voltage to the lens driver module for power supply.

[0027] In one embodiment, the filtering module includes: a tenth capacitor, a second inductor, and a third inductor;

[0028] The first terminal of the tenth capacitor is connected to the driver interface module, the first terminal of the second inductor, and the first terminal of the third inductor, respectively. The second terminal of the tenth capacitor is grounded. The second terminal of the second inductor is connected to the lens driving module, and the second terminal of the third inductor is connected to the lens driving module.

[0029] In addition, to achieve the above objectives, this utility model also proposes an endoscope system, which includes a camera equipped with a liquid lens as described above.

[0030] This invention proposes a camera and endoscope system equipped with a liquid lens. The camera includes: a first optical lens group, a liquid lens, a second optical lens group, and an image sensor arranged sequentially and at intervals along the incident optical axis; a driving circuit connected to the liquid lens, the driving circuit being used to output a zoom signal to the liquid lens; and the liquid lens being used to adjust its curvature upon receiving the zoom signal.

[0031] This invention features a camera with a first optical lens group, a liquid lens, a second optical lens group, and an image sensor arranged sequentially at intervals. External imaging light passes through these lenses before reaching the image sensor, thus capturing the image. A drive circuit is electrically connected to the liquid lens, allowing it to output a zoom signal. Upon receiving this signal, the liquid lens adjusts its curvature to achieve zoom. Compared to existing methods using mechanical mechanisms for zooming, this invention eliminates the need for such mechanisms, simplifying the structure, making it more convenient to hold, and improving the user experience. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a first embodiment of a camera equipped with a liquid lens according to an embodiment of the present utility model;

[0034] Figure 2 This is a structural block diagram of the driving circuit in the first embodiment of the camera with a liquid lens proposed in this utility model.

[0035] Figure 3This is a structural block diagram of the driving circuit in the second embodiment of the camera with a liquid lens proposed in this utility model.

[0036] Figure 4 A circuit diagram of the driver interface module in the third embodiment of the camera with a liquid lens proposed in this utility model;

[0037] Figure 5 The circuit diagram of the temperature acquisition module in the third embodiment of the camera with a liquid lens proposed in this utility model is shown.

[0038] Figure 6 A circuit diagram of the voltage conversion module in the third embodiment of the camera with a liquid lens proposed in this utility model;

[0039] Figure 7 A circuit diagram of the filtering module in the third embodiment of the camera with a liquid lens proposed in this utility model;

[0040] Figure 8 The circuit diagram of the main control module in the third embodiment of the camera with a liquid lens proposed in this utility model embodiment;

[0041] Figure 9 A circuit diagram of the lens driving module in the third embodiment of the camera with a liquid lens proposed in this utility model;

[0042] Figure 10 The circuit diagram of the lens interface module in the third embodiment of the camera with a liquid lens proposed in this utility model is shown.

[0043] Explanation of icon numbers:

[0044]

[0045] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0049] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed by this utility model.

[0050] It should be noted that current medical endoscope systems generally acquire images through cameras. That is, several optical lens groups and image sensors are usually set at intervals inside the camera. The imaging light passes through each optical lens group in sequence and is projected onto the image sensor to complete the image acquisition.

[0051] However, existing cameras generally achieve zoom through mechanical means. This involves a mechanical structure within the camera that moves the optical lens group, changing its relative distance to other optical lenses, thus achieving zoom. Because of this mechanical mechanism, the camera is relatively large and heavy, making it inconvenient for users to hold and resulting in a poor user experience.

[0052] To address the aforementioned technical problems, this embodiment provides a camera equipped with a liquid lens. In this embodiment, a first optical lens group, a liquid lens, a second optical lens group, and an image sensor are sequentially and spaced apart within the camera. External imaging light passes sequentially through the first optical lens group, the liquid lens, and the second optical lens group before being transmitted to the image sensor to complete image acquisition. A drive circuit is also provided, electrically connected to the liquid lens. In actual use, the drive circuit can output a zoom signal to the liquid lens. Upon receiving this zoom signal, the liquid lens can adjust its curvature to achieve zoom. Compared to existing methods that use mechanical mechanisms for zooming, this embodiment eliminates the need for mechanical mechanisms, simplifying the structure, making it more convenient for users to hold, and improving the user experience.

[0053] For ease of understanding, the following is combined with Figures 1 to 10 The camera equipped with a liquid lens provided in the embodiments of this application will be described in detail.

[0054] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of a first embodiment of a camera 1 equipped with a liquid lens 12, as proposed in this utility model. Figure 1 As shown, in this embodiment, the camera 1 includes:

[0055] The first optical lens group 11, the liquid lens 12, the second optical lens group 13, and the image sensor 14 are arranged sequentially and at intervals along the incident optical axis.

[0056] It should be noted that the camera 1 in this embodiment may include two sets of optical lens groups and a liquid lens 12, wherein the two sets of optical lens groups may be referred to as the first optical lens group 11 and the second optical lens group 13, respectively. Figure 1 As shown, the first optical lens group 11, the liquid lens 12, and the second optical lens group 13 are arranged sequentially and at intervals along the incident optical axis, that is, the imaging light from the outside can pass through the first optical lens group 11, the liquid lens 12, and the second optical lens group 13 in sequence. Figure 1 The direction of the dashed line in the diagram can be considered as the direction of the incident optical axis.

[0057] It should also be noted that the first optical lens group 11 and the second optical lens group 13 in this embodiment can each include a combination of several lenses, such as a combination of single lenses or cemented lenses, or plano lenses such as protective lenses, and the specific number can be set according to the actual situation. This embodiment does not limit this.

[0058] It is understood that the aforementioned liquid lens 12 can be any lens that uses liquid material as the optical medium, and the focal length can be adjusted by changing the curvature of the liquid under the drive of an electrical signal. The aforementioned image sensor 14 can be any image sensor that converts light signals into electrical signals, and as... Figure 1 As shown, in this embodiment, the image sensor 14 can be positioned after the second optical lens group 13 in the direction of the incident optical axis. Furthermore, the first optical lens group 11 can project imaging light through the liquid lens 12 onto the second optical lens group 13. The imaging light received by the second optical lens group 13 can be projected onto the image sensor 14 for acquisition. The image sensor 14 converts the optical signal imaging light into an electrical signal image signal.

[0059] It is also understood that the image sensor 14 in this embodiment can also be electrically connected to the camera host 2, specifically to the image processing module 21 within the camera host 2. That is, the image sensor 14 can transmit image signals to the image processing module 21, and after processing by the image processing module 21, the signals can be transmitted to the connected display 3 for display.

[0060] It should be emphasized that, in order to adjust the curvature of the liquid lens 12, continue as follows Figure 1 As shown, in this embodiment, the camera 1 further includes a driving circuit 15, which is connected to the liquid lens 12 and is used to output a zoom signal to the liquid lens 12.

[0061] The liquid lens 12 is used to perform curvature adjustment when the zoom signal is received.

[0062] It should be understood that the aforementioned zoom signal can be a signal used to adjust the curvature of the liquid lens 12. In actual use, the drive circuit 15 can transmit the generated zoom signal to the liquid lens 12. Upon receiving the zoom signal, the liquid lens 12 can adjust its curvature to achieve zoom, that is, the first optical lens group 11 can project the imaging light through the curvature-adjusted liquid lens 12 to the second optical lens group 13. Compared with the existing method of using a mechanical mechanism to achieve zoom, this embodiment eliminates the need for a mechanical mechanism, thereby simplifying the structure, making it more convenient for users to hold, and improving the user experience.

[0063] Furthermore, since traditional mechanical mechanisms can perform mechanical zoom after receiving the drive signal transmitted by the image processing module 21 of the camera host 2, the drive circuit 15 in this embodiment can also be electrically connected to the image processing module 21 in the camera host 2 via a cable. When zoom is required, the image processing module 21 can generate a control signal and transmit it to the drive circuit 15. The drive circuit 15 then converts the drive signal into a zoom signal and transmits it to the liquid lens 12 to complete the zoom.

[0064] Specifically, refer to Figure 2 , Figure 2 This is a structural block diagram of the driving circuit 15 in the first embodiment of the camera 1 equipped with a liquid lens 12, as proposed in this utility model embodiment. Figure 2 As shown, in this embodiment, the driving circuit 15 includes: a driver interface module 151, a lens driving module 152, and a lens interface module 153.

[0065] The driver interface module 151 is connected to the lens drive module 152 and the camera host 2 in the endoscope system, respectively. The driver interface module 151 is used to transmit the drive signal output by the camera host 2 to the lens drive module 152.

[0066] The lens drive module 152 is connected to the liquid lens 12 through the lens interface module 153. The lens drive module 152 is used to convert the drive signal into a zoom signal and transmit the zoom signal to the liquid lens 12 through the lens interface module 153.

[0067] It should be noted that the aforementioned driver interface module 151 can be any interface module used to connect to the aforementioned image processing module 21 for signal transmission, such as a serial communication standard 485 (Recommended Standard 485, RS485) interface, etc., and this embodiment does not impose any limitations on it. The aforementioned lens interface module 153 can be an interface module used to connect to the liquid lens 12, and its specific form can be set according to the actual situation, and this embodiment does not impose any limitations on it.

[0068] It should also be noted that, since liquid lenses 12 commonly have two driving methods, namely electrowetting effect driving and dielectric power driving, both of which are achieved by changing the voltage, the lens driving module 152 mentioned above in this embodiment can be a module used to adjust the voltage transmitted to the liquid lens 12.

[0069] In actual use, the image processing module 21 of the camera host 2 can transmit the generated drive signal to the lens drive module 152 through the driver interface module 151. The lens drive module 152 outputs a zoom signal with a corresponding voltage value according to the drive signal, and transmits the zoom signal to the liquid lens 12 through the lens interface module 153, thereby adjusting to the corresponding curvature and completing the zoom.

[0070] Furthermore, in order to convert the drive signal output by the image processing module 21 into a signal that the lens drive module 152 can recognize, the following process continues... Figure 2 As shown, in this embodiment, the driving circuit 15 further includes a main control module 154;

[0071] The main control module 154 is connected to the driver interface module 151 and the lens drive module 152 respectively. The main control module 154 is used to convert the drive signal into a control signal and transmit the control signal to the lens drive module 152.

[0072] The lens drive module 152 is also used to convert the control signal into a zoom signal.

[0073] It is understood that the main control module 154 can be any module that can convert the driving signal output by the image processing module 21 into a control signal that can be recognized by the lens driving module 152, such as a field-programmable gate array (FPGA), etc. This embodiment does not limit it.

[0074] In actual use, the image processing module 21 can transmit the drive signal to the main control module 154 through the driver interface. The main control module 154 converts the drive signal into a control signal and transmits it to the lens drive module 152. The lens drive module 152 then outputs the zoom signal corresponding to the voltage value of the control signal.

[0075] Furthermore, considering that the temperature inside camera 1 may affect the medium inside liquid lens 12, thereby affecting the zoom effect, therefore, continuing as follows... Figure 2 As shown, in this embodiment, the driving circuit 15 further includes a temperature acquisition module 155;

[0076] The temperature acquisition module 155 is connected to the main control module 154. The temperature acquisition module 155 is used to acquire the current temperature of the camera 1 and transmit the generated temperature signal to the main control module 154.

[0077] The main control module 154 is also used to transmit the temperature signal to the camera host 2 through the driver interface module 151, so that the camera host 2 outputs a drive signal when it detects that the current temperature has not reached the preset temperature threshold.

[0078] It should be understood that the temperature acquisition module 155 described above can be any module with temperature acquisition function, such as temperature sensor U1, etc., and this embodiment does not limit it. The preset temperature threshold described above can be set according to the actual situation, and this embodiment does not limit it.

[0079] In actual use, the temperature acquisition module 155 can acquire the current temperature inside the camera 1 and transmit it to the main control module 154 in the form of the aforementioned temperature signal. The main control module 154 then transmits the temperature signal to the image processing module 21 of the camera host 2 through the driver interface module 151. The image processing module 21 can then determine whether the current temperature corresponding to the temperature signal has reached the preset temperature threshold. If the preset temperature threshold has not been reached, a drive signal can be output and transmitted to the main control module 154 through the driver interface module 151. If the preset temperature threshold has been reached, it indicates that the current temperature inside the camera 1 is too high, so the image processing module 21 does not output a drive signal.

[0080] As another implementation, since temperature can cause temperature drift in the liquid lens 12, in this embodiment, the image processing module 21 can also store a preset correction strategy. When the image processing module 21 receives a temperature signal, it can correct the output drive signal according to the current temperature corresponding to the temperature signal and the corresponding preset correction strategy. Then, the corrected drive signal is transmitted to the main control module 154 through the driver interface module 151, so that the main control module 154 outputs a corrected control signal to the lens drive module 152 according to the corrected drive signal. The lens drive module 152 then outputs a corrected zoom signal to the liquid lens 12 to correct the liquid lens 12, thereby completing temperature compensation.

[0081] In this embodiment, a first optical lens group 11, a liquid lens 12, a second optical lens group 13, and an image sensor 14 are sequentially arranged at intervals within the camera 1. External imaging light passes sequentially through the first optical lens group 11, the liquid lens 12, and the second optical lens group 13 before being transmitted to the image sensor 14 to complete image acquisition. A drive circuit 15 is also provided, electrically connected to the liquid lens 12. In actual use, the drive circuit 15 can output a zoom signal to the liquid lens 12. Upon receiving this zoom signal, the liquid lens 12 can adjust its curvature to achieve zoom. Compared to existing methods that use mechanical mechanisms for zooming, this embodiment eliminates the need for mechanical mechanisms, simplifying the structure, making it more convenient for users to hold, and improving the user experience.

[0082] Reference Figure 3 , Figure 3 The structural block diagram of the driving circuit 15 in the second embodiment of the camera 1 equipped with a liquid lens 12, as proposed in this utility model embodiment.

[0083] like Figure 3 As shown, in order to power the lens driving module 152, in this embodiment, the driving circuit 15 further includes a filtering module 156;

[0084] The filtering module 156 is connected to the driver interface module 151 and the lens driver module 152 respectively. The filtering module 156 is used to filter the external voltage provided by the external power supply and transmit the obtained driver chip power supply voltage to the lens driver module 152 for power supply.

[0085] It should be noted that the aforementioned filtering module 156 can be any module with filtering function, such as inductors and capacitors, and this embodiment does not impose any restrictions on it. The aforementioned external power supply can be any power supply for the operation of the driving circuit 15, and can be output from the camera host 2, or it can be output from other places, and this embodiment does not impose any restrictions on it.

[0086] In actual use, the driver interface module 151 can filter the external voltage provided by the external power supply to obtain the power supply voltage of the driver chip, and transmit the power supply voltage of the driver chip to the lens driver module 152 for power supply.

[0087] It should also be noted that the filtering module 156 in this embodiment can also be electrically connected to the temperature acquisition module 155 and the main control module 154. The filtering module 156 can also be used to filter the external voltage provided by the external power supply, transmit the obtained sensor power supply voltage to the temperature acquisition module 155 for power supply, and transmit the obtained main control chip U3 power supply voltage to the main control module 154 for power supply.

[0088] Furthermore, in order to power the liquid lens 12, continue as follows Figure 3 As shown, in this embodiment, the driving circuit 15 further includes a voltage conversion module 157;

[0089] The driver interface module 151 is also connected to an external power supply and the voltage conversion module 157. The driver interface module 151 is used to transmit the external voltage provided by the external power supply to the voltage conversion module 157.

[0090] The voltage conversion module 157 is connected to the lens interface module 153. The voltage conversion module 157 is used to convert the external voltage and transmit the obtained lens power supply voltage to the liquid lens 12 through the lens interface module 153 for power supply.

[0091] It is understood that the voltage conversion module 157 described above can be any module that performs voltage conversion, such as a DC-DC converter, etc., and this embodiment does not limit it. The lens power supply voltage described above can be the voltage used for the operation of the liquid lens 12. In this embodiment, the external voltage provided by the external power supply can be described as 5V, and the lens power supply voltage can be described as 3.3V.

[0092] In actual use, the driver interface module 151 can transmit the external voltage provided by the external power supply to the voltage conversion module 157, which then converts the voltage to obtain a 3.3V lens power supply voltage. This lens power supply voltage is then transmitted to the liquid lens 12 via the lens interface module 153 for power supply.

[0093] Reference Figure 4 , Figure 4 The circuit diagram of the driver interface module 151 in the third embodiment of the camera 1 equipped with a liquid lens 12 proposed in this utility model is shown.

[0094] like Figure 4As shown, in this embodiment, the driver interface module 151 includes: a first interface CON1;

[0095] The general-purpose input / output trigger terminal of the first interface CON1 (i.e. Figure 4 The first pin of the first interface CON1 in the middle) and the main control module 154 (i.e. Figure 4 The GPIO Trigger is connected to the analog input terminal of the first interface CON1 (i.e., the GPIO Trigger). Figure 4 The second pin of the first interface CON1) is connected to the main control module 154 (i.e. Figure 4 (Analog IN) connection, the clock terminal of the first interface CON1 (i.e. Figure 4 The third pin of the first interface CON1) and the main control module 154 (i.e. Figure 4 (TX / SCL) connection, the data end of the first interface CON1 (i.e. Figure 4 The fourth pin of the first interface CON1) and the main control module 154 (i.e. Figure 4 (RX / SDA) connection, the ground terminal of the first interface CON1 (i.e. Figure 4 The fifth pin of the first interface CON1 is grounded, and the power supply terminal of the first interface CON1 (i.e., Figure 4 The sixth pin of the first interface CON1) and the aforementioned filter module 156 (i.e. Figure 4 Connect VCC IN.

[0096] It should be noted that the other end of the first interface CON1 is also connected to the image processing module 21. The first interface CON1 can be an interface adapted to the image processing module 21 of the camera host 2, and can be set according to the actual situation. This embodiment does not limit this.

[0097] In practical use, the external voltage provided by the external power supply (i.e. Figure 4 The VCC IN signal is transmitted to the filter module 156 through the power supply terminal of the first interface CON1. ​​At the same time, the drive signal output by the image processing module 21 is transmitted to the main control module 154 through the first pin to the fourth pin of the first interface CON1.

[0098] Furthermore, referring to Figure 5 , Figure 5 The circuit diagram of the temperature acquisition module 155 in the third embodiment of the camera 1 equipped with a liquid lens 12 proposed in this utility model is shown.

[0099] like Figure 5 As shown, in this embodiment, the temperature acquisition module 155 includes: a temperature sensor U1, a first resistor R7, a first capacitor C1, and a second capacitor C2;

[0100] The chip select terminal of the temperature sensor U1 (i.e. Figure 5 The first pin of the medium temperature sensor U1) and the main control module 154 (i.e. Figure 5 The temperature sensor U1 is connected to the ground terminal (i.e., SPICS) of the medium-speed oscillator. Figure 5 The second pin of the temperature sensor U1 is grounded, and the communication terminal of the temperature sensor U1 (i.e., Figure 5 The third pin of the medium temperature sensor U1 is connected to the second end of the first resistor R7, and the first end of the first resistor R7 is connected to the main control module 154 (i.e., Figure 5 The temperature sensor U1 is connected to the SPIIO terminal (i.e., the clock terminal of the SPIIO terminal). Figure 5 The fourth pin of the medium temperature sensor U1) and the main control module 154 (i.e. Figure 5 The temperature sensor U1 is connected to the SPI CK) and its power supply terminal (i.e., Figure 5 The fifth pin of the medium temperature sensor U1 is connected to the power supply (i.e., Figure 5 The first terminal of the first capacitor C1 and the first terminal of the second capacitor C2 are connected, the second terminal of the first capacitor C1 is connected to the second terminal of the second capacitor C2, and the second terminal of the second capacitor C2 is grounded.

[0101] It should be noted that, in this embodiment, the power supply connected to the power supply terminal of the temperature sensor U1 can be the power supply corresponding to the sensor power supply voltage output by the filter module 156. That is, the power supply terminal of the temperature sensor U1 is connected to the filter module 156 to receive the sensor power supply voltage output by the filter module 156 (i.e., Figure 5 middle VT).

[0102] It is understood that the temperature sensor U1 mentioned above can be any type of temperature sensor U1, and this embodiment does not impose any restrictions on it.

[0103] In actual use, the temperature sensor U1 can collect the current temperature inside the camera 1 and transmit the generated temperature signal to the main control module 154 through the communication terminal of the temperature sensor U1.

[0104] Furthermore, in order to obtain a 3.3V voltage for the operation of the liquid lens 12, refer to Figure 6 , Figure 6 The circuit diagram of the voltage conversion module 157 in the third embodiment of the camera 1 equipped with a liquid lens 12 proposed in this utility model is shown.

[0105] like Figure 6 As shown, in this embodiment, the voltage conversion module 157 includes: a voltage conversion chip U2, a third capacitor C3 to a ninth capacitor C9, a first inductor L1, and a second resistor R2 to a seventh resistor R7.

[0106] The enable terminal of the voltage conversion chip U2 (i.e. Figure 6 The first pin of the medium voltage conversion chip U2 is connected to the second terminal of the third capacitor C3, the second terminal of the second resistor R2, and the second terminal of the third resistor R3, respectively. The first terminal of the third capacitor C3 is connected to the first terminal of the second resistor R2. The first terminal of the third capacitor C3 is also grounded. The first terminal of the third resistor R3 is connected to the external power supply (i.e., Figure 6 The voltage conversion chip U2 is connected to VCC IN, and its ground terminal (i.e., VCC IN) is connected to the ground terminal. Figure 6 The second pin of the voltage conversion chip U2 is grounded, and the output terminal of the voltage conversion chip U2 (i.e., Figure 6 The third pin of the intermediate voltage conversion chip U2 is connected to the first terminal of the fourth capacitor C4 and the second terminal of the first inductor L1, respectively. The second terminal of the fourth capacitor C4 is connected to the second terminal of the fourth resistor R4. The first terminal of the first inductor L1 is connected to the first terminal of the fifth capacitor C5, the first terminal of the sixth capacitor C6, the first terminal of the seventh capacitor C7, the first terminal of the fifth resistor R5, and the lens interface module 153 (i.e., Figure 6 The voltage converter chip U2 is connected to VCC_3V3. The first terminal of the fourth resistor R4 is connected to the second terminal of the fifth capacitor C5, the second terminal of the sixth capacitor C6, the second terminal of the seventh capacitor C7, and the second terminal of the fifth resistor R5. The second terminal of the fifth resistor R5 is also grounded. Figure 6 The fourth pin of the medium voltage conversion chip U2 is connected to the first terminal of the eighth capacitor C8, the first terminal of the ninth capacitor C9, and the external power supply (i.e., Figure 6 The voltage converter chip U2 is connected to VCC_IN. The second terminal of the eighth capacitor C8 is connected to the second terminal of the ninth capacitor C9. The second terminal of the ninth capacitor C9 is grounded. Figure 6 The fifth pin of the intermediate voltage conversion chip U2 is connected to the second terminal of the sixth resistor R6 and the first terminal of the seventh resistor R7, respectively. The first terminal of the sixth resistor R6 is grounded, and the second terminal of the seventh resistor R7 is connected to the lens interface module 153 (i.e., Figure 6 Connect to VCC_3V3.

[0107] It should be noted that the first end of the third resistor R3 can be specifically connected to the power supply terminal of the first interface CON1 to receive the external voltage provided by the external power supply. Similarly, the first end of the ninth capacitor C9 can also be specifically connected to the power supply terminal of the first interface CON1 to receive the external voltage provided by the external power supply.

[0108] It is understood that the voltage conversion chip U2 in this embodiment can be any chip that converts 5V voltage to 3.3V voltage, and this embodiment does not impose any restrictions on it.

[0109] In practical use, the input terminal of the voltage conversion chip U2 can receive the external voltage output from the power supply terminal of the first interface CON1 (i.e., Figure 6 The lens power supply voltage (i.e., VCCIN) is obtained by converting it. Figure 6 The voltage (VCC_3V3) is transmitted to the lens interface module 153 through the first inductor L1 via the output of the voltage conversion chip U2. Simultaneously, the feedback terminal of the voltage conversion chip U2 can also collect the lens power supply voltage.

[0110] Furthermore, referring to Figure 7 , Figure 7 The circuit diagram of the filter module 156 in the third embodiment of the camera 1 equipped with a liquid lens 12 proposed in this utility model is shown.

[0111] like Figure 7 As shown, in this embodiment, the filtering module 156 includes: a tenth capacitor C10, a second inductor L2, and a third inductor L3;

[0112] The first terminal of the tenth capacitor C10 is respectively connected to the driver interface module 151 (i.e. Figure 7 The first terminal of the second inductor L2 and the first terminal of the third inductor L3 are connected to VCC IN, the second terminal of the tenth capacitor C10 is grounded, and the second terminal of the second inductor L2 is connected to the lens drive module 152 (i.e., Figure 7 The third inductor L3 is connected to the lens drive module 152 (i.e., DRV), and the second end of the third inductor L3 is connected to the lens drive module 152. Figure 7 (VM) connection.

[0113] It should be noted that the power supply terminal of the first interface CON1 can accept external voltage (i.e., Figure 7 The voltage (VCC_IN) is transmitted to the filter module 156. The tenth capacitor C10 and the second inductor L2 in the filter module 156 can filter this external voltage, thereby obtaining the power supply voltage of the driver chip (i.e., VCC_IN). Figure 7 DRV and Figure 7 The data is transmitted from the VM to the lens driver module 152.

[0114] Meanwhile, the filtering module 156 in this embodiment may also include: a fourth inductor L4 and a fifth inductor L5;

[0115] The first terminal of the fourth inductor L4 is connected to the first terminal of the tenth capacitor C10 and the first terminal of the fifth inductor L5. The second terminal of the fourth inductor L4 is connected to the temperature acquisition module 155 (i.e., Figure 7 The fifth inductor L5 is connected to the main control module 154 (i.e., VT). Figure 7 (VD) connection.

[0116] Understandably, the second terminal of the aforementioned fourth inductor L4 can be connected to the power supply terminal of the temperature sensor U1.

[0117] In practical use, after filtering the external voltage through the tenth capacitor C10 and the fourth inductor L4, the obtained sensor power supply voltage (i.e. Figure 7 The voltage (VT) is transmitted to the power supply terminal of the temperature sensor U1 for power supply. Simultaneously, after filtering the external voltage through the tenth capacitor C10 and the fifth inductor L5, the obtained power supply voltage for the main control chip U3 (i.e., VT) is used. Figure 7 The power supply is transmitted from the VD (Volume D) to the main control module 154.

[0118] Furthermore, referring to Figure 8 , Figure 8 The circuit diagram of the main control module 154 in the third embodiment of the camera 1 equipped with a liquid lens 12 proposed in this utility model is shown.

[0119] like Figure 8 As shown, in this embodiment, the main control module 154 includes: a main control chip U3 and an eleventh capacitor C11;

[0120] The power supply terminal of the main control chip U3 (i.e. Figure 8 The first pin of the main control chip U3) and the filter module 156 (i.e. Figure 8 The second terminal of the eleventh capacitor C11 is connected to the VD terminal, and the first terminal of the eleventh capacitor C11 is grounded. The analog input terminal of the main control chip U3 (i.e., Figure 8 The second pin of the main control chip U3) and the driver interface module 151 (i.e. Figure 8 The Analog IN connection is used, and the first serial clock terminal of the main control chip U3 (i.e., Figure 8 The third pin of the main control chip U3) and the driver interface module 151 (i.e. Figure 8 The TX / SCL connection is used, and the first serial data terminal of the main control chip U3 (i.e., Figure 8 The fourth pin of the main control chip U3) and the driver interface module 151 (i.e. Figure 8 The RX / SDA connection is used to connect the general-purpose input / output trigger terminals of the main control chip U3 (i.e., Figure 8 The fifth pin of the main control chip U3) and the driver interface module 151 (i.e. Figure 8 The GPIO Trigger is connected to the ground terminal of the main control chip U3 (i.e., the ground terminal). Figure 8The sixth pin of the main control chip U3 is grounded, and the SPI clock pin of the main control chip U3 (i.e., Figure 8 Pin 7 of the main control chip U3) and temperature acquisition module 155 (i.e. Figure 8 The SPI communication terminal of the main control chip U3 (i.e., SPI CK) is connected to the SPI CK terminal of the main control chip U3. Figure 8 Pin 8 of the main control chip U3) and temperature acquisition module 155 (i.e. Figure 8 The SPI chip select pin of the main control chip U3 is connected to the SPI I / O pin. Figure 8 Pin 9 of the main control chip U3) and temperature acquisition module 155 (i.e. Figure 8 The main control chip U3 has a second serial clock terminal (i.e., SPICS) connected to the main control chip U3. Figure 8 The tenth pin of the main control cabinet chip) and the lens interface module 153 (i.e. Figure 8 The second serial data terminal of the main control chip U3 (i.e., SCL2) is connected to the SCL2 terminal. Figure 8 Pin 11 of the main control chip U3) and lens interface module 153 (i.e. Figure 8 The mode selection terminal of the main control chip U3 (i.e., SDA2) is connected to the SDA2. Figure 8 Pin 12 of the main control chip U3 and the lens driver module 152 (i.e. Figure 8 The MODE connection is made, and the enable pin of the main control chip U3 (i.e., Figure 8 Pin 13 of the main control chip U3) and lens driver module 152 (i.e. Figure 8 The AIN2 / AENBL connection is used, and the phase input of the main control chip U3 (i.e., Figure 8 Pin 14 of the main control chip U3 and the lens driver module 152 (i.e. Figure 8 (AIN1 / APHASE) connection.

[0121] It should be noted that the main control chip U3 mentioned above can be any chip with the above functions, such as FPGA, and this embodiment does not limit it.

[0122] Understandably, the analog input terminal of the aforementioned main control chip U3 can be connected to the analog input terminal of the first interface CON1 (i.e., Figure 8 The main control chip U3 can be connected to the Analog IN interface, and the first serial clock terminal of the main control chip U3 can be connected to the clock terminal of the first interface CON1 (i.e., the clock terminal of the main control chip U3). Figure 8 The main control chip U3's first serial data terminal can be connected to the data terminal of the first interface CON1 (i.e., TX / SCL). Figure 8 The general-purpose input / output trigger terminal of the main control chip U3 can be connected to the general-purpose input / output trigger terminal of the first interface CON1 (i.e., RX / SDA). Figure 8The GPIO Trigger of the main control chip U3 can be connected to the SPI clock terminal of the temperature sensor U1 (i.e., the GPIO Trigger). Figure 8 The SPI communication terminal of the main control chip U3 can be connected to the communication terminal of the temperature sensor U1 (i.e., CK). Figure 8 The SPI chip select pin of the main control chip U3 can be connected to the chip select pin of the temperature sensor U1 (i.e., SPI IO). Figure 8 SPI CS) connection.

[0123] In practical use, the main control module 154 can receive drive signals through the second pin to the fifth pin of the main control chip U3, and transmit the converted control signals to the lens drive module 152 through the twelfth to fourteenth pins of the main control chip U3. Simultaneously, the main control module 154 can receive the temperature signal output by the temperature sensor U1 through the eighth pin of the main control chip U3, and transmit it to the driver interface module 151 through the second pin to the fifth pin of the main control chip U3, and then to the image processing module 21 through the driver interface module 151.

[0124] Furthermore, referring to Figure 9 , Figure 9 The circuit diagram of the lens driving module 152 in the third embodiment of the camera 1 equipped with a liquid lens 12 proposed in this utility model is shown.

[0125] like Figure 9 As shown, in this embodiment, the lens driving module 152 includes: a lens driving chip U4, a twelfth capacitor C12, and a thirteenth capacitor C13;

[0126] The drive power supply terminal of the lens driver chip U4 (i.e. Figure 9 The first pin of the lens driver chip U4 is connected to the filter module 156 (i.e., Figure 9 The first terminal of the 13th capacitor C13 is connected to the VM (middle) and the second terminal of the 13th capacitor C13 is grounded, and the first output terminal of the lens driver chip U4 (i.e. Figure 9 The second pin of the lens driver chip U4 and the lens interface module 153 (i.e. Figure 9 The second output terminal of the lens driver chip U4 (i.e., LENS+) is connected to the lens driver chip U4. Figure 9 The third pin of the lens driver chip U4 and the lens interface module 153 (i.e. Figure 9 The lens driver chip U4 is connected to the first ground terminal (i.e., LENS-) in the middle. Figure 9 The sixth pin of the lens driver chip U4 is grounded, and the enable pin of the lens driver chip U4 (i.e., Figure 9 Pin 9 of the lens driver chip U4 and the main control module 154 (i.e. Figure 9The AIN2 / AENBL is connected to the phase input of the lens driver chip U4 (i.e., ...). Figure 9 Pin 10 of the lens driver chip U4 and the main control module 154 (i.e. Figure 9 The AIN1 / APHASE connection is used to select the mode of the lens driver chip U4 (i.e., ...). Figure 9 Pin 11 of the lens driver chip U4 and the main control module 154 (i.e. Figure 9 The lens driver chip U4 is connected to the MODE connector (i.e., the power supply terminal of the MODE connector). Figure 9 Pin 12 of the lens driver chip U4 is connected to the filter module 156 (i.e., Figure 9 The second terminal of the DRV and the twelfth capacitor C12 are connected, the first terminal of the twelfth capacitor C12 is grounded, and the second ground terminal of the lens driver chip U4 (i.e., Figure 9 The thirteenth pin of the lens driver chip U4 is connected to the first ground terminal of the lens driver chip U4.

[0127] It should be noted that the lens driver chip U4 mentioned above can be any chip that drives the liquid lens 12, such as DRV8835, etc., and this embodiment does not limit it.

[0128] It is understandable that the phase input of the aforementioned lens driver chip U4 can specifically be connected to the phase input of the main control chip U3 (i.e., Figure 9 The lens driver chip U4 can be connected to the main control chip U3 (i.e., AIN1 / APHASE). Figure 9 The lens driver chip U4 can be connected to the second terminal of the third inductor L3 (i.e., AIN2 / AENBL). Figure 9 The lens driver chip U4 is connected to the second terminal of the second inductor L2 (i.e., the power supply terminal of the lens driver chip U4 can be connected to the second terminal of the second inductor L2). Figure 9 DRV connection.

[0129] In actual use, the ninth to eleventh pins of the lens driver chip U4 can receive the control signals output by the main control chip U3, and transmit the converted zoom signal to the lens interface module 153 through the second and third pins of the lens driver chip U4.

[0130] Furthermore, referring to Figure 10 , Figure 10 The circuit diagram of the lens interface module 153 in the third embodiment of the camera 1 equipped with a liquid lens 12 proposed in this utility model is shown.

[0131] like Figure 10 As shown, in this embodiment, the lens interface module 153 includes: a second interface CON2;

[0132] The grounding terminal of the second interface CON2 (i.e. Figure 10 The first pin of the second interface CON2 is grounded, and the second receiving end of the second interface CON2 (i.e., Figure 10 The second pin of the second interface CON2 is connected to the lens driver module 152, specifically to the second output terminal of the lens driver chip U4 (i.e., Figure 10 The first receiving end of the second interface CON2 (i.e., LENS-) is connected to the LENS-) connection. Figure 10 The third pin of the second interface CON2 is connected to the lens driver module 152, specifically to the first output terminal of the lens driver chip U4 (i.e., Figure 10 The second interface CON2 is connected via a LENS+ connection (i.e., the serial data terminal of LENS+). Figure 10 The fourth pin of the second interface CON2 is connected to the main control module 154, specifically to the second data terminal of the main control chip U3 (i.e., Figure 10 The second interface CON2 clock terminal (i.e., SDA2) is connected to the SDA2 interface. Figure 10 The fifth pin of the second interface CON2 is connected to the main control module 154, specifically to the second serial clock terminal of the main control chip U3 (i.e., Figure 10 Connect SCL2 to the power supply terminal of the second interface CON2 (i.e., Figure 10 The sixth pin of the second interface CON2 can be connected to the voltage conversion module 157, specifically to the first terminal of the first inductor L1 (i.e., Figure 10 Connect to VCC_3V3.

[0133] It should be noted that the other end of the aforementioned second interface CON2 can be connected to the liquid lens 12. Furthermore, in this embodiment, the aforementioned second interface CON2 can be any interface adapted to the liquid lens 12; this embodiment does not impose any restrictions on it.

[0134] In actual use, the sixth pin of the second interface CON2 can transmit the lens power supply voltage output by the voltage conversion module 157 to the liquid lens 12 for power supply. At the same time, the second and third pins of the second interface CON2 can transmit the received zoom signal to the liquid lens 12 to adjust the curvature of the liquid lens 12. Furthermore, the fourth and fifth pins of the second interface CON2 can transmit clock signals with the main control chip U3.

[0135] In addition, to achieve the above objectives, this embodiment also provides an endoscope system, which includes a camera 1 equipped with a liquid lens 12 as described above.

[0136] It should be noted that the specific implementation of the endoscope system described above in this embodiment can refer to the various embodiments of the camera 1 equipped with the liquid lens 12 described above, and this embodiment will not elaborate on this.

[0137] Since the endoscope system in this embodiment adopts all the technical solutions of all the embodiments of the camera 1 with liquid lens 12 described above, it has at least all the beneficial effects brought about by the technical solutions of the embodiments of the camera 1 with liquid lens 12 described above, which will not be repeated here.

[0138] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A camera equipped with a liquid lens, characterized in that, The camera includes: A first optical lens group, a liquid lens, a second optical lens group, and an image sensor are arranged sequentially and at intervals along the incident optical axis. A driving circuit is connected to the liquid lens and is used to output a zoom signal to the liquid lens. The liquid lens is used to adjust curvature upon receiving the zoom signal.

2. The camera equipped with a liquid lens as described in claim 1, characterized in that, The driving circuit includes: a driver interface module, a lens driving module, and a lens interface module; The driver interface module is connected to the lens drive module and the camera host in the endoscope system, respectively. The driver interface module is used to transmit the drive signal output by the camera host to the lens drive module. The lens driving module is connected to the liquid lens through the lens interface module. The lens driving module is used to convert the driving signal into a zoom signal and transmit the zoom signal to the liquid lens through the lens interface module.

3. The camera equipped with a liquid lens as described in claim 2, characterized in that, The driving circuit also includes: a main control module; The main control module is connected to the driver interface module and the lens drive module respectively. The main control module is used to convert the drive signal into a control signal and transmit the control signal to the lens drive module. The lens drive module is also used to convert the control signal into a zoom signal.

4. The camera equipped with a liquid lens as described in claim 3, characterized in that, The driving circuit also includes: a temperature acquisition module; The temperature acquisition module is connected to the main control module. The temperature acquisition module is used to acquire the current temperature of the camera and transmit the generated temperature signal to the main control module. The main control module is also used to transmit the temperature signal to the camera host through the driver interface module, so that the camera host outputs a drive signal when it detects that the current temperature has not reached the preset temperature threshold.

5. The camera equipped with a liquid lens as described in claim 4, characterized in that, The temperature acquisition module includes: a temperature sensor, a first resistor, a first capacitor, and a second capacitor; The chip select terminal of the temperature sensor is connected to the main control module. The ground terminal of the temperature sensor is grounded. The communication terminal of the temperature sensor is connected to the second terminal of the first resistor. The first terminal of the first resistor is connected to the main control module. The clock terminal of the temperature sensor is connected to the main control module. The power supply terminal of the temperature sensor is connected to the power supply, the first terminal of the first capacitor, and the first terminal of the second capacitor. The second terminal of the first capacitor is connected to the second terminal of the second capacitor. The second terminal of the second capacitor is grounded.

6. The camera equipped with a liquid lens as described in claim 2, characterized in that, The driving circuit further includes: a voltage conversion module; The driver interface module is also connected to an external power supply and the voltage conversion module. The driver interface module is used to transmit the external voltage provided by the external power supply to the voltage conversion module. The voltage conversion module is connected to the lens interface module. The voltage conversion module is used to convert the external voltage and transmit the obtained lens power supply voltage to the liquid lens through the lens interface module for power supply.

7. The camera with a liquid lens as described in claim 6, characterized in that, The voltage conversion module includes: a voltage conversion chip, a third to a ninth capacitor, a first inductor, and a second to a seventh resistor; The enable terminal of the voltage conversion chip is connected to the second terminal of the third capacitor, the second terminal of the second resistor, and the second terminal of the third resistor, respectively. The first terminal of the third capacitor is connected to the first terminal of the second resistor, and the first terminal of the third capacitor is also grounded. The first terminal of the third resistor is connected to the external power supply. The ground terminal of the voltage conversion chip is grounded. The output terminal of the voltage conversion chip is connected to the first terminal of the fourth capacitor and the second terminal of the first inductor, respectively. The second terminal of the fourth capacitor is connected to the second terminal of the fourth resistor, respectively. The first terminal of the first inductor is connected to the first terminals of the fifth capacitor, the sixth capacitor, the seventh capacitor, the fifth resistor, and the lens, respectively. The interface module is connected as follows: the first end of the fourth resistor is connected to the second end of the fifth capacitor, the second end of the sixth capacitor, the second end of the seventh capacitor, and the second end of the fifth resistor. The second end of the fifth resistor is also grounded. The input end of the voltage conversion chip is connected to the first end of the eighth capacitor, the first end of the ninth capacitor, and the external power supply. The second end of the eighth capacitor is connected to the second end of the ninth capacitor. The second end of the ninth capacitor is grounded. The feedback end of the voltage conversion chip is connected to the second end of the sixth resistor and the first end of the seventh resistor. The first end of the sixth resistor is grounded. The second end of the seventh resistor is connected to the lens interface module.

8. The camera equipped with a liquid lens as described in claim 2, characterized in that, The driving circuit further includes: a filtering module; The filtering module is connected to the driver interface module and the lens driver module respectively. The filtering module is used to filter the external voltage provided by the external power supply and transmit the obtained driver chip power supply voltage to the lens driver module for power supply.

9. The camera with a liquid lens as described in claim 8, characterized in that, The filtering module includes: a tenth capacitor, a second inductor, and a third inductor; The first terminal of the tenth capacitor is connected to the driver interface module, the first terminal of the second inductor, and the first terminal of the third inductor, respectively. The second terminal of the tenth capacitor is grounded. The second terminal of the second inductor is connected to the lens driving module, and the second terminal of the third inductor is connected to the lens driving module.

10. An endoscope system, characterized in that, The endoscope system includes a camera with a liquid lens as described in any one of claims 1 to 9.

Images