Camera module structure and electronic device

Abstract

The present invention discloses a camera module structure and an electronic device including the same, comprising: an imaging module, the imaging module includes a lens part and a photoelectric sensor part, and a fixed distance is configured between the lens part and the photoelectric sensor part; an axial integral focusing module, the axial integral focusing module is connected to the imaging module, and the whole of the lens part and the photoelectric sensor part is axially moved for focusing. By fixing the distance between the lens and the photoelectric sensor, the focusing stroke can be greatly improved, and object-image conjugation can be achieved within the allowable stroke of the motor, maintaining high imaging quality. Furthermore, the goal of simplifying the microscopic imaging operation is achieved, and it can be combined with an electronic device, presenting great prospects for medical treatment, popular science education, and public health.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic devices, especially the imaging technology of electronic devices, and specifically relates to a camera module structure and an electronic device. Background Art

[0002] A microscopic imaging system can achieve high-magnification imaging to meet people's needs for observing the microscopic world. The imaging of traditional microscopic systems is based on a multi-lens combination structure of an objective lens and a tube lens, or an objective lens and an eyepiece. In order to achieve magnified imaging, splicing and cooperation are carried out. The overall system is too large in volume and too long in length, and can only be used in specific places such as hospitals, laboratories, and quality inspection institutes.

[0003] Miniaturized microscopic systems are a high-demand point in the current microscopic imaging industry. The demand is that if miniaturized microscopic systems can be achieved, the application scenarios and application fields of microscopic imaging can be greatly broadened. Moreover, the realization of a small-sized microscopic camera module can be combined with the widely popular portable mobile electronic devices, making microscopic imaging technology popular among individuals, which has a great promoting effect on the development of fields such as medicine, education, and public health.

[0004] However, there are difficulties in miniaturized microscopic systems. The difficulty lies in that the imaging range of traditional microscopic systems is very small. Simply reducing the traditional microscopic system in equal proportion, although the volume of the device is reduced, the imaging range is also reduced in equal proportion at the same time, and the effect obtained is not worth the cost. Patent application CN111562661A provides a super-macro lens module solution, which increases the field of view of the imaging system through a free-form surface and solves the problem of too small imaging range.

[0005] However, on the premise of solving the difficulties of miniaturized microscopic systems, there is another problem in realizing the combination of miniaturized microscopic systems and electronic devices, that is, based on the existing solutions, good focusing imaging of the system cannot be achieved. Because the existing focusing scheme for the lens module of electronic devices is that the photoelectric sensor is fixed and the optical imaging lens can be moved for focusing. By adjusting the distance between the optical imaging lens and the photoelectric sensor, object-image conjugation is achieved. When this scheme is transplanted to the microscopic imaging system, problems will occur:

[0006] 1) When the object distance is very small (macro - super macro) and the magnification is large, compared with the physical moving distance d generated by the focusing motor driving the lens to move, the optical object surface moving distance s generated by the lens moving is such that s is close to or even less than d. When the surface of the object to be detected deviates greatly from the designed object surface, the motor stroke is insufficient to achieve focusing, and it is easy to occur that the surface of the object to be detected and the surface of the photoelectric sensor cannot achieve object-image conjugation;

[0007] 2) According to the principle of optical imaging, for a lens with a known structure and relatively fixed internal components, there is only one set of positions for the object plane and the image plane that can achieve the complete optical performance of the lens. The distance between the object plane to be detected and the lens at this position is called the designed object distance, and the distance between the surface of the photoelectric sensor and the lens is called the designed image distance. Adjusting the distance between the optical imaging lens and the photoelectric sensor will cause the lens to move away from this position, resulting in a sharp deterioration of the imaging resolution and mismatched magnification in multiple imaging. When the object distance is very small (macro - ultra - macro), this phenomenon is more obvious. And this is exactly the unacceptable problem in macro / ultra - macro imaging.

[0008] Due to the above problems, the existing macro and ultra - macro lenses equipped in electronic devices (such as: CN111562661A), which can be regarded as simplified versions of microscopic lenses, do not have the function of automatic focusing. When taking pictures, users need to manually move the device to the position where they feel the image quality is the best. The operation is troublesome, and even a slight shake during the operation will cause problems such as a decrease in resolution and inconsistent magnification for macro / ultra - macro imaging. This is also one of the reasons why medical or laboratory microscopes and the objects to be photographed are static, which is completely different from the usage experience of the infinite - distance lenses and anti - shake technologies of ordinary mobile phones; and the convenience of focusing and the quality of the imaging directly determine the operability and user experience of the device. Therefore, innovation is needed for the existing focusing methods. Summary of the Invention

[0009] In view of at least one of the above - mentioned defects or improvement requirements in the prior art, the present invention provides a camera module structure and an electronic device, thereby overcoming the difficulties encountered in the field of miniaturized microscopic imaging and further solving the problems that the existing electronic devices cannot autofocus in the fields of macro, ultra - macro or microscopic imaging, resulting in complex operations during photographing and unstable image quality.

[0010] To achieve the above object, according to one aspect of the present invention, a camera module structure is provided, which includes:

[0011] An imaging module, the imaging module includes a lens part and a photoelectric sensor part, and a fixed distance is configured between the lens part and the photoelectric sensor part;

[0012] An axial overall focusing module, the axial overall focusing module is connected to the imaging module, and the whole of the lens part and the photoelectric sensor part is axially moved for focusing.

[0013] Further preferably, the photoelectric sensor part is located at the designed image plane of the imaging of the lens part, and at this time, the fixed distance is the designed image distance.

[0014] Further preferably, the axial overall focusing module is focused so that the object to be photographed is located at the designed object plane.

[0015] Further preferably, the axial overall focusing module is an autofocus component. Of course, a manual focusing component is not excluded.

[0016] Further preferably, the camera module structure further includes:

[0017] A substrate, which includes a front hardware area and a rear hardware area;

[0018] A rear-end image circuit component. The imaging module is installed in the front hardware area, and the rear-end image circuit component is installed in the rear hardware area and performs data transmission with the imaging module. The rear-end image circuit component and the imaging module are configured with a variable distance. The function of the rear-end image circuit component is to receive, preliminarily process, and temporarily store the electrical data signal of the image generated by the imaging module for subsequent continued use by the electronic device loading the system.

[0019] Further preferably, there is no physical entity data transmission medium between the front hardware area and the rear hardware area, and / or between the rear-end image circuit component and the imaging module, and wireless data transmission is adopted.

[0020] Further preferably, the substrate further includes an intermediate flexible area; the intermediate flexible area connects the front hardware area and the rear hardware area and is used for free expansion and contraction of the distance between the front and rear hardware areas. Further preferably, the intermediate flexible area is the physical entity data transmission medium between the photoelectric sensor part and the rear-end image circuit component. The intermediate flexible area is used to realize free expansion and contraction movement of the distance between the front and rear hardware areas, and is used to conduct the data signal generated by the photoelectric sensor in the camera module loaded in the front hardware area to the rear-end image circuit component loaded in the rear hardware area. This flexible component can be a flexible printed circuit board (FPC) or other flexible and flexible components capable of transmitting data.

[0021] Further preferably, the imaging module further includes a sleeve;

[0022] The lens part and the photoelectric sensor part are encapsulated in the sleeve, and the axial overall focusing module actuates the sleeve for focusing. The function of the sleeve is to fix the distance between the lens part and the photoelectric sensor part so that the lens part always satisfies imaging on the photoelectric sensor at the designed image plane.

[0023] Further preferably, the axial overall focusing module is used to control the axial movement of the imaging module to achieve automatic focusing on the imaging of an object. The components used to achieve this function, including but not limited to voice coil motors, ultrasonic motors, or linear motors, etc., are all within the scope of this protection.

[0024] Further preferably, the lens part is a single lens or a multi-lens.

[0025] Further preferably, the lens part is a macro lens, an ultra-macro lens or a microscopic lens.

[0026] Further preferably, the photoelectric sensor part includes, but is not limited to, a CMOS photoelectric sensor, a CCD photoelectric sensor, and other electronic devices for realizing photoelectric conversion.

[0027] To achieve the above object, according to another aspect of the present invention, an electronic device is further provided, wherein: the electronic device includes the above-mentioned camera module structure.

[0028] Further preferably, the electronic device includes, but is not limited to, a portable imaging device, and the portable imaging device includes, but is not limited to, a mobile phone, etc.

[0029] As long as the above-mentioned preferred technical features do not conflict with each other, they can be combined with each other.

[0030] Generally speaking, compared with the prior art by the above technical solution conceived by the present invention, the following beneficial effects are obtained:

[0031] 1. The camera module structure and the electronic device of the present invention are particularly suitable for macro, ultra-macro or microscopic imaging. By adopting a millimeter-level microscopic camera module, a microscopic imaging effect with a magnification greater than 0.5 can be achieved. The realization of this camera module helps to solve the long-standing problem of miniaturization of the microscopic system, realizes the low cost and high popularity of the microscopic imaging system, and can be combined with electronic devices, presenting great prospects for medical treatment, science popularization education, and public health.

[0032] 2. Regarding the existing macro, ultra-macro, and microscopic modules combined with electronic devices, which have problems such as inability to automatically focus and poor imaging quality after focusing, the present invention proposes a solution to fix the distance between the lens and the optoelectronic sensor in the imaging module of the camera module, and drive the lens and the optoelectronic sensor to move axially as a whole by the axial integral focusing module for focusing. By fixing the distance between the lens and the optoelectronic sensor, this distance is preferably designed as the image distance. By driving the imaging module to move as a whole by the axial integral focusing module, the focusing range can be made equal to the motor stroke, avoiding the problem that the focusing range is less than the motor stroke and the focusing range is insufficient when imaging at close range in the traditional focusing scheme (the focusing module only drives the lens to move). By keeping the relative position between the imaging lens and the optoelectronic sensor fixed, and the sensor is always located on the designed image plane of the lens, the imaging system always works on the designed conjugate object and image planes at this time. When the axial integral focusing module drives the imaging module to move axially for focusing, the object plane with the detected object is located on the designed object plane of the lens, and the designed conjugate object and image relationship is always maintained, without adverse situations such as resolution decline and magnification change caused by deviation from the designed conjugate object and image relationship for microscopic imaging. Moreover, it is not necessary for the user to focus by feeling, which simplifies the operation and maintains high-quality imaging.

[0033] 3. For the camera module structure and electronic device of the present invention, since the distance between the adjustable-focus camera module and the rear-end electronic components is not fixed, it is proposed to use flexible circuit components for the interconnection of the front and rear-end hardware, realizing the arbitrary movement of the front and rear-end optoelectronic devices while maintaining stable data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic structural diagram of a camera module in an embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of another camera module in an embodiment of the present invention;

[0036] Figure 3 is a schematic structural diagram of another axial integral focusing module in an embodiment of the present invention;

[0037] Figure 4 is a schematic structural diagram of yet another axial integral focusing module in an embodiment of the present invention;

[0038] Figure 5 is a schematic structural diagram of another connection method of the flexible area of the substrate in an embodiment of the present invention;

[0039] Figure 6 is a schematic structural diagram of yet another connection method of the flexible area of the substrate in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be further described in detail below in conjunction with the specific embodiments.

[0041] As a preferred embodiment of the present invention, as Figure 1-6 shown, the present invention provides a camera module structure and an electronic device including the same, comprising: an imaging module and an axial integral focusing module.

[0042] The imaging module includes a lens part and a photoelectric sensor part 13, and a fixed distance is configured between the lens part and the photoelectric sensor part 13. Further preferably, the photoelectric sensor part 13 is located on the designed image plane of the lens part imaging. Taking the ideal model of a convex lens with finite conjugates as an example, this fixed distance is related to the properties of the lens part itself. The positions of the photoelectric sensor parts determined by different lens parts are different, as long as they are all located on the designed image plane. At this time, this fixed distance is the designed image distance v = f(M + 1) of the lens part itself, where f is the focal length and M is the magnification.

[0043] The lens part is a single lens or multiple lenses. The lens part is a macro lens, an ultra-macro lens or a microscopic lens. In the following embodiments, only the microscopic lens part 11 is taken as an example for illustration, which does not represent a limitation on the lens type. The photoelectric sensor part includes, but is not limited to, a CMOS photoelectric sensor, a CCD photoelectric sensor, and other electronic devices for realizing photoelectric conversion.

[0044] The axial integral focusing module is connected to the imaging module, and the whole of the lens part and the photoelectric sensor part 13 is axially moved for focusing. Further preferably, the axial integral focusing module is focused so that the object to be photographed is located on the designed object plane. Further preferably, the axial integral focusing module is an automatic focusing component, such as a voice coil motor, an ultrasonic motor or a linear motor, etc. Of course, a manual focusing component is not excluded either.

[0045] Further preferably, the camera module structure further includes:

[0046] a substrate, the substrate including a front hardware area 1 and a rear hardware area 3;

[0047] A rear - end image circuit component, the imaging module is installed in the front hardware area 1, and the rear - end image circuit component is installed in the rear hardware area 3 and performs data transmission with the imaging module. The rear - end image circuit component and the imaging module are configured with a variable distance. The function of the rear - end image circuit component is to receive, preliminarily process, and temporarily store the electrical data signal of the image generated by the imaging module for subsequent continued use by an electronic device loading the system.

[0048] Further preferably, between the front hardware area 1 and the rear hardware area 3, and / or between the rear - end image circuit component and the imaging module, there is no physical entity data - transmission medium, and wireless data transmission is adopted.

[0049] Further preferably, the substrate further includes an intermediate flexible area 2; the intermediate flexible area 2 connects the front hardware area 1 and the rear hardware area 3 and is used for free telescopic movement of the distance between the front and rear hardware areas 3. Further preferably, the intermediate flexible area 2 is a physical entity data - transmission medium between the photoelectric sensor part 13 and the rear - end image circuit component. The intermediate flexible area 2 is used to realize free telescopic movement of the distance between the front and rear hardware areas 3 and to conduct the data signal generated by the photoelectric sensor in the camera module loaded in the front hardware area 1 to the rear - end image circuit component loaded in the rear hardware area 3. This flexible component can be a flexible printed circuit board (FPC) or other flexible and bendable components capable of transmitting data.

[0050] Further preferably, the imaging module further includes a sleeve, such as a rigid sleeve 10;

[0051] The lens part and the photoelectric sensor part 13 are encapsulated in the sleeve, and the axial overall focusing module actuates the sleeve for focusing. The role of the sleeve is to fix the distance between the lens part and the photoelectric sensor part 13 so that the lens part always satisfies the condition of imaging on the photoelectric sensor at the designed image plane.

[0052] In the present invention, the imaging module includes a microscopic lens part and a photoelectric sensor. The distance between the microscopic lens part and the photoelectric sensor is relatively fixed, ensuring that the microscopic lens part always forms an image at the designed image plane position. The axial overall focusing module uses a motor, and the imaging module is driven by the axial overall focusing module to automatically focus the imaging module to the designed object plane position during photographing, which is convenient and fast in operation, and the focusing stroke is sufficient to cover the designed object plane. The rear-end image circuit components are mechanically and electrically connected to the imaging module and are used to receive, process, and store the data signals generated by the imaging module. To solve the influence caused by the unfixed distance between the imaging module and the rear-end image circuit components, a flexible circuit component is used to connect the two, ensuring the free movement of the imaging module and the stable transmission of data signals. All the above devices are installed on the substrate to ensure the stability of the overall structure.

[0053] The following will be described in detail with reference to the related drawings of various implementation structures.

[0054] Referring to Figure 1 , which shows a schematic structural diagram of a microscopic camera module, including an imaging module, an axial overall focusing module, rear-end image circuit components, and a substrate. The imaging module includes a microscopic lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate includes a front hardware area 1, a middle flexible area 2, and a rear hardware area 3. The imaging module is installed in the front hardware area 1, and the middle flexible area 2 connects the front hardware area 1 and the rear hardware area 3, which is used to realize the free telescopic movement of the distance between the front and rear hardware areas. The rear-end image circuit components are installed in the rear hardware area 3. Among them, the sizes, specific positions, distances, etc. of each component are only for illustration purposes, and in specific implementations, any structure that meets the above description can be used, including Figure 1 the structure described.

[0055] Specifically, in the imaging module, the microscopic lens part 11 for optical imaging and the photoelectric sensor part 13 for photoelectric conversion are installed on a rigid sleeve 10. The function of the rigid sleeve 10 is to fix the distance between the microscopic lens part 11 and the photoelectric sensor part 13, so that the microscopic lens part 11 always forms an image on the photoelectric sensor 13 at the designed image plane. Any structure that can achieve the above functions, regardless of its shape and size differences, should be regarded as a similar deformation of the rigid sleeve 10.

[0056] Specifically, the axial overall focusing module is composed of a focusing module stator 121 and a focusing module mover 122. Among them, the function of the focusing module stator 121 is to keep the position of the axial overall focusing module relatively stable, and the function of the focusing module mover 122 is to control the axial movement of the imaging module to achieve automatic focusing on the object imaging, so that the microscopic lens part 11 satisfies that the object to be photographed is at the designed object plane during imaging.

[0057] In particular, Figure 1 in the axial integral focusing module in the specific embodiment shown, the focusing module stator 121 and the focusing module mover 122 perform focusing adjustment in the traditional voice coil motor focusing manner, that is, the focusing module mover 122 is suspended in the middle of the focusing module stator 121, and the axial movement of the focusing module mover 122 is realized through electromagnetic field control, so as to drive the imaging module to move synchronously.

[0058] Specifically, the middle flexible area 2 of the substrate, its main structure is the flexible circuit element 21, and its function is to realize the free telescopic movement of the distance between the front and rear hardware areas, and is used to conduct the data signal generated by the photoelectric sensor 13 in the imaging module loaded by the front hardware area 1 to the rear end image circuit element loaded by the rear hardware area 3.

[0059] In particular, to achieve free telescopic movement, the flexible circuit element 21 is bent into a zigzag distribution, so that the flexible circuit element 21 will not be affected by mechanical stress during the telescopic process and can always maintain normal data transmission.

[0060] Optionally, referring to Figure 2 , it is a schematic structural diagram of another imaging module in the embodiment of the present invention, which includes an imaging module, an axial integral focusing module, a rear end image circuit element, and a substrate. The imaging module includes a microscopic lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate includes a front hardware area 1, a middle flexible area 2, and a rear hardware area 3. The imaging module is installed in the front hardware area 1, and the middle flexible area 2 connects the front hardware area 1 and the rear hardware area 3 to realize the free telescopic movement of the distance between the front and rear hardware areas, and the rear end image circuit element is installed in the rear hardware area 3. Among them, the sizes, specific positions, distances, etc. of each component are only for illustration purposes, and in specific implementations, any structure that meets the above description can be used, including Figure 1 the described structure.

[0061] Specifically, in the imaging module, the microscopic lens part 11 for optical imaging and the photoelectric sensor part 13 for photoelectric conversion are installed on the hard sleeve 10. The function of the hard sleeve 10 is to fix the distance between the microscopic lens part 11 and the photoelectric sensor part 13, so that the microscopic lens part 11 always satisfies imaging on the photoelectric sensor 13 at the designed image plane. Structures that can achieve the above functions, regardless of their shape and size differences, should be regarded as similar deformations of the hard sleeve 10.

[0062] In particular, the microscopic lens part 11 is composed of a microscopic objective lens 111 and a microscopic image lens 112. Its function is to conjugate the information of the designed object plane onto the designed image plane. The designed object plane and the designed image plane are respectively controlled by the microscopic objective lens 111 and the microscopic image lens 112. The distance between the microscopic objective lens 111 and the microscopic image lens 112 is relatively free, which can reduce the influence of installation tolerances.

[0063] Specifically, the axial integral focusing module is composed of a focusing module stator 121 and a focusing module mover 122. Among them, the function of the focusing module stator 121 is to keep the position of the axial integral focusing module relatively stable, and the function of the focusing module mover 122 is to control the axial movement of the imaging module to achieve autofocus on the object imaging, so that the microscopic lens part 11 satisfies that the object to be photographed is on the designed object plane during imaging.

[0064] In particular, Figure 2 In the axial integral focusing module in the specific embodiment shown, among them, the focusing module stator 121 and the focusing module mover 122 are adjusted for focusing in the traditional voice coil motor focusing manner, that is, the focusing module mover 122 is suspended in the middle of the focusing module stator 121, and the axial movement of the focusing module mover 122 is realized through electromagnetic field control, thereby driving the imaging module to move synchronously.

[0065] Specifically, the middle flexible area 2 of the substrate, its main structure is a flexible circuit element 21, and its function is to realize free telescopic movement of the distance between the front and rear hardware areas, and to conduct the data signal generated by the photoelectric sensor 13 in the imaging module loaded by the front hardware area 1 to the rear-end image circuit element loaded by the rear hardware area 3.

[0066] In particular, to achieve free telescopic movement, the flexible circuit element 21 is bent into a zigzag distribution, so that the flexible circuit element 21 will not be affected by mechanical stress during the telescopic process and can always maintain normal data transmission.

[0067] Optionally, referring to Figure 3 , it is a schematic structural diagram of another imaging module in the embodiment of the present invention, which includes an imaging module, an axial integral focusing module, a rear-end image circuit element, and a substrate. The imaging module includes a microscopic lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate includes a front hardware area 1, a middle flexible area 2, and a rear hardware area 3. The imaging module is installed on the front hardware area 1, and the middle flexible area 2 connects the front hardware area 1 and the rear hardware area 3 to realize free telescopic movement of the distance between the front and rear hardware areas. The rear-end image circuit element is installed on the rear hardware area 3. Among them, the sizes, specific positions, distances, etc. of each component are only for illustration purposes, and in specific implementations, it can be any structure that meets the above description, including Figure 1 the described structure.

[0068] Specifically, in the imaging module, the microscopic lens part 11 for optical imaging and the photoelectric sensor part 13 for photoelectric conversion are mounted on the rigid sleeve 10. The function of the rigid sleeve 10 is to fix the distance between the microscopic lens part 11 and the photoelectric sensor part 13, so that the microscopic lens part 11 is always at the designed image plane when imaging on the photoelectric sensor 13. Structures that can achieve the above functions, regardless of their shape and size differences, should be regarded as similar deformations of the rigid sleeve 10.

[0069] Specifically, the axial integral focusing module is composed of a front stator 121 of the focusing module, a moving element 122 of the focusing module, and a rear stator 123 of the focusing module. Among them, the front stator 121 of the focusing module and the rear stator 123 of the focusing module function to keep the position of the axial integral focusing module relatively stable, and the moving element 122 of the focusing module functions to control the axial movement of the imaging module to achieve automatic focusing on the object imaging, so that the microscopic lens part 11 satisfies that the object to be photographed is at the designed object plane during imaging.

[0070] Particularly, Figure 3 In the axial integral focusing module in the specific embodiment shown, among them, the front stator 121 of the focusing module, the moving element 122 of the focusing module, and the rear stator 123 of the focusing module are adjusted for focusing in the traditional ultrasonic motor focusing mode, that is, the moving element 122 of the focusing module is included between the front stator 121 of the focusing module and the rear stator 123, and through piezoelectric ceramic control, the axial movement of the moving element 122 of the focusing module is realized, thereby driving the synchronous movement of the imaging module.

[0071] Specifically, in the middle flexible area 2 of the substrate, its main structure is the flexible circuit element 21, and its function is to realize the free telescopic movement of the distance between the front and rear hardware areas, and to conduct the data signal generated by the photoelectric sensor 13 in the imaging module loaded on the front hardware area 1 to the rear-end image circuit element loaded on the rear hardware area 3.

[0072] Particularly, in order to achieve free telescopic movement, the flexible circuit element 21 is bent into a zigzag distribution, so that during the telescopic process of the flexible circuit element 21, it will not be affected by mechanical stress and can always maintain normal data transmission.

[0073] Optionally, referring to Figure 4, is a schematic structural diagram of another imaging module in an embodiment of the present invention, which includes an imaging module, an axial integral focusing module, a rear-end image circuit element, and a substrate. The imaging module includes a microscopic lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate includes a front hardware area 1, a middle flexible area 2, and a rear hardware area 3. The imaging module is installed in the front hardware area 1, and the middle flexible area 2 connects the front hardware area 1 and the rear hardware area 3 to realize free telescopic movement of the distance between the front and rear hardware areas. The rear-end image circuit element is installed in the rear hardware area 3. Among them, the sizes, specific positions, distances, etc. of each component are only for illustration purposes, and in specific implementations, any structure that meets the above description can be used, including Figure 1 the described structure.

[0074] Specifically, in the imaging module, the microscopic lens part 11 for optical imaging and the photoelectric sensor part 13 for photoelectric conversion are installed on a rigid sleeve 10. The function of the rigid sleeve 10 is to fix the distance between the microscopic lens part 11 and the photoelectric sensor part 13, so that the microscopic lens part 11 is always at the designed image plane when imaging on the photoelectric sensor 13. Any structure that can achieve the above functions, regardless of its shape and size differences, should be regarded as a similar deformation of the rigid sleeve 10.

[0075] Specifically, the axial integral focusing module is composed of a focusing module stator 121 and a focusing module mover 122. Among them, the function of the focusing module stator 121 is to keep the position of the axial integral focusing module relatively stable, and the function of the focusing module mover 122 is to control the axial movement of the imaging module to realize automatic focusing on the object imaging, so that the microscopic lens part 11 satisfies that the object to be photographed is at the designed object plane when imaging.

[0076] Particularly, Figure 4 In the axial integral focusing module shown in the specific embodiment, the focusing module stator 121 and the focusing module mover 122 are adjusted for focusing in the traditional stepping motor focusing mode, that is, the focusing module mover 122 is rotatably connected to the protruding part of the focusing module stator 121, and the axial movement of the focusing module mover 122 is realized by converting the electrical pulse signal into the corresponding angular displacement or linear displacement control, thereby driving the imaging module to move synchronously.

[0077] Particularly based on the structural form of the stepping motor, in addition to the lead screw slider structure shown in the figure, it can also be a rack and pinion structure, and its characteristics are all the subdivision of the axial movement. Other axial focusing modes using stepping motors should also be regarded as Figure 4 similar deformations of the described structure.

[0078] Specifically, the middle flexible area 2 of the substrate mainly consists of flexible circuit elements 21. Its function is to achieve free telescopic movement of the distance between the front and rear hardware areas, and to conduct the data signals generated by the photoelectric sensors 13 in the imaging module loaded by the front hardware area 1 to the rear-end image circuit elements loaded by the rear hardware area 3.

[0079] Specifically, to achieve free telescopic movement, the flexible circuit elements 21 are bent into a zigzag distribution so that during the telescopic process, the flexible circuit elements 21 will not be affected by mechanical stress and can always maintain normal data transmission.

[0080] Refer to Figure 5 , which shows a schematic structural diagram of a microscopic camera module, including an imaging module, an axial integral focusing module, a rear-end image circuit element, and a substrate. The imaging module includes a microscopic lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate includes a front hardware area 1, a middle flexible area 2, and a rear hardware area 3. The imaging module is installed on the front hardware area 1, and the middle flexible area 2 connects the front hardware area 1 and the rear hardware area 3 to achieve free telescopic movement of the distance between the front and rear hardware areas. The rear-end image circuit element is installed on the rear hardware area 3. Among them, the sizes, specific positions, distances, etc. of each component are only for illustration purposes, and in specific implementations, it can be any structure that meets the above description, including Figure 1 the structure described.

[0081] Specifically, in the imaging module, the microscopic lens part 11 for optical imaging and the photoelectric sensor part 13 for photoelectric conversion are installed on the rigid sleeve 10. The function of the rigid sleeve 10 is to fix the distance between the microscopic lens part 11 and the photoelectric sensor part 13 so that the microscopic lens part 11 always satisfies imaging on the photoelectric sensor 13 at the designed image plane. Any structure that can achieve the above functions, regardless of the differences in its shape and size, should be regarded as a similar deformation of the rigid sleeve 10.

[0082] Specifically, the axial integral focusing module consists of a focusing module stator 121 and a focusing module mover 122. Among them, the function of the focusing module stator 121 is to keep the position of the axial integral focusing module relatively stable, and the function of the focusing module mover 122 is to control the axial movement of the imaging module to achieve automatic focusing on the object imaging, so that the microscopic lens part 11 satisfies that the object to be photographed is at the designed object plane during imaging.

[0083] Specifically, Figure 5The axial integral focusing module in the specific embodiment shown, wherein the focusing module stator 121 and the focusing module mover 122 are used to perform focusing adjustment in the traditional voice coil motor focusing manner, that is, the focusing module mover 122 is suspended in the middle of the focusing module stator 121, and the axial movement of the focusing module mover 122 is realized through electromagnetic field control, thereby driving the imaging module to move synchronously.

[0084] Specifically, the middle flexible area 2 of the substrate, its main structure is a flexible circuit element 21, and its function is to realize the free telescopic movement of the distance between the front and rear hardware areas, and is used to conduct the data signal generated by the photoelectric sensor 13 in the imaging module loaded by the front hardware area 1 to the rear end image circuit element loaded by the rear hardware area 3.

[0085] Particularly, in order to realize the free telescopic movement, the flexible circuit element 21 is bent into a "mountain" shape with multiple U shapes, so that the flexible circuit element 21 will not be affected by mechanical stress during the telescopic process and can always maintain normal data transmission.

[0086] Referring to Figure 6 , the structural schematic diagram of the microscopic camera module shown therein, which includes an imaging module, an axial integral focusing module, a rear end image circuit element, and a substrate. The imaging module includes a microscopic lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate includes a front hardware area 1, a middle flexible area 2, and a rear hardware area 3. The imaging module is installed on the front hardware area 1, and the middle flexible area 2 connects the front hardware area 1 and the rear hardware area 3 to realize the free telescopic movement of the distance between the front and rear hardware areas, and the rear end image circuit element is installed on the rear hardware area 3. Among them, the sizes, specific positions, distances, etc. of each component are only for illustration purposes, and in specific implementations, any structure that meets the above description can be used, including Figure 1 the structure described.

[0087] Specifically, in the imaging module, the microscopic lens part 11 for optical imaging and the photoelectric sensor part 13 for photoelectric conversion are installed on the rigid sleeve 10. The function of the rigid sleeve 10 is to fix the distance between the microscopic lens part 11 and the photoelectric sensor part 13, so that the microscopic lens part 11 is always at the designed image plane when imaging on the photoelectric sensor 13. Any structure that can achieve the above functions, regardless of the difference in its shape and size, should be regarded as a similar deformation of the rigid sleeve 10.

[0088] Specifically, the axial integrated focusing module is composed of a focusing module stator 121 and a focusing module mover 122. Among them, the focusing module stator 121 functions to keep the position of the axial integrated focusing module relatively stable, and the focusing module mover 122 functions to control the axial movement of the imaging module to achieve automatic focusing on the object imaging, so that the microscopic lens part 11 satisfies that the object to be photographed is on the designed object plane during imaging.

[0089] Particularly, Figure 6 In the axial integrated focusing module in the specific embodiment shown, the focusing module stator 121 and the focusing module mover 122 perform focusing adjustment in the traditional voice coil motor focusing manner, that is, the focusing module mover 122 is suspended in the middle of the focusing module stator 121, and the axial movement of the focusing module mover 122 is achieved through electromagnetic field control, thereby driving the imaging module to move synchronously.

[0090] Specifically, in the middle flexible area 2 of the substrate, its main structure is a flexible circuit element 21, whose function is to realize free telescopic movement between the front and rear hardware areas, and to conduct the data signals generated by the photoelectric sensor 13 in the imaging module loaded by the front hardware area 1 to the rear image circuit element loaded by the rear hardware area 3.

[0091] Particularly, to achieve free telescopic movement, the flexible circuit element 21 is bent into a spiral shape distribution, so that the flexible circuit element 21 will not be affected by mechanical stress during the telescopic process and can always maintain normal data transmission.

[0092] In summary, compared with the prior art, the solution of the present invention has the following significant advantages:

[0093] The camera module structure and electronic device of the present invention are particularly suitable for macro, ultra - macro or microscopic imaging. By using a millimeter - level microscopic camera module, a microscopic imaging effect with a magnification greater than 0.5 can be achieved. The realization of this camera module helps to solve the long - standing problem of miniaturization of the microscopic system, realizes the low - cost and high - popularity of the microscopic imaging system, can be combined with electronic devices, and has great prospects for medical treatment, science popularization education, and public health.

[0094] In view of the problems existing in the existing macro, ultra-macro, and microscopic modules in combination with electronic devices, namely the inability to automatically focus and the poor imaging quality after focusing, the present invention proposes a solution to fix the distance between the lens and the optoelectronic sensor in the imaging module of the camera module, and drive the lens and the optoelectronic sensor to move axially as a whole by the axial overall focusing module for focusing. By fixing the distance between the lens and the optoelectronic sensor, this distance is preferably the designed image distance. By driving the imaging module to move as a whole by the axial overall focusing module, the focusing range can be made equal to the motor stroke, avoiding the problem that the focusing range is less than the motor stroke and the focusing range is insufficient when imaging at a short distance in the traditional focusing scheme (the focusing module only drives the lens to move). By keeping the relative position between the imaging lens and the optoelectronic sensor fixed, and the sensor is always located on the designed image plane of the lens, the imaging system always works on the designed conjugate object-image plane. When the axial overall focusing module drives the imaging module to move axially for focusing, the object surface to be detected is located on the designed object plane of the lens, and the designed conjugate object-image relationship is always maintained, without the adverse situations such as resolution degradation and magnification change caused by deviation from the designed conjugate object-image relationship for microscopic imaging, and there is no need for the user to focus by feeling, simplifying the operation and maintaining high-quality imaging.

[0095] For the camera module structure and electronic device of the present invention, based on the fact that the distance between the adjustable-focus camera module and the rear-end electronic components is not fixed, it is proposed to use flexible circuit components for the interconnection of the front-end and rear-end hardware, to realize the arbitrary movement of the front-end and rear-end optoelectronic devices, and at the same time to maintain stable data transmission.

[0096] It can be understood that the embodiments of the system described above are merely illustrative. The units described as separate components may or may not be physically separated, and may be located in one place or distributed to different network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0097] In addition, those skilled in the art should understand that in the application documents of the embodiments of the present invention, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0098] In the description of the embodiments of the present invention, a large number of specific details are set forth. However, it should be understood that the embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and technologies have not been shown in detail so as not to obscure the understanding of this description. Similarly, it should be understood that, in order to streamline the disclosure of the present invention and assist in understanding one or more of the various inventive aspects, in the foregoing description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof.

[0099] However, the disclosed method should not be construed as reflecting an intention that the claimed embodiments of the present invention require more features than are expressly recited in each claim. Rather, as the claims reflect, the inventive aspects lie in less than all of the features of the single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate embodiment of the present invention.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A camera module structure, characterized in that, Comprising: An imaging module, the imaging module includes a lens part and a photoelectric sensor part, and a fixed distance is configured between the lens part and the photoelectric sensor part; The photoelectric sensor part is located on the designed image plane of the imaging of the lens part; An axial integral focusing module, the axial integral focusing module is connected to the imaging module, and the whole of the lens part and the photoelectric sensor part is axially moved for focusing; and, the axial integral focusing module focuses until the object to be photographed is located on the designed object plane; A sleeve, the lens part and the photoelectric sensor part are encapsulated in the sleeve, and the axial integral focusing module actuates the sleeve for focusing; The axial integral focusing module includes a focusing module stator and a focusing module mover, and the focusing module stator is used to keep the position of the axial integral focusing module relatively stable; The focusing module mover is used to control the axial movement of the imaging module to achieve automatic focusing on the object imaging; The axial integral focusing module further includes a voice coil motor, the focusing module mover is suspended in the middle of the focusing module stator, and the axial movement of the focusing module mover is achieved by controlling the electromagnetic field of the voice coil motor; Or, the axial integral focusing module further includes an ultrasonic motor, and the focusing module stator includes a focusing module rear stator in the middle of the focusing module front stator, and the axial movement of the focusing module mover is controlled by the piezoelectric ceramics of the ultrasonic motor; Or, the axial integral focusing module further includes a stepping motor, the focusing module mover is rotatably connected to the protruding part of the focusing module stator, and the movement of the stepping motor is driven by an electrical pulse signal to be converted into a corresponding angular displacement or position control to achieve the axial movement of the focusing module mover.

2. The camera module structure according to claim 1, wherein: The camera module structure further includes: A substrate, the substrate includes a front hardware area and a rear hardware area; A rear-end image circuit element, the imaging module is installed in the front hardware area, the rear-end image circuit element is installed in the rear hardware area and performs data transmission with the imaging module, and the rear-end image circuit element and the imaging module are configured with a variable distance.

3. The camera module structure according to claim 2, wherein: The substrate further includes an intermediate flexible area; The intermediate flexible area connects the front hardware area and the rear hardware area and is used for free expansion and contraction of the distance between the front and rear hardware areas.

4. The camera module structure according to claim 3, wherein: The intermediate flexible area is a physical entity data transmission medium between the photoelectric sensor part and the rear-end image circuit element.

5. The camera module structure according to claim 1, wherein: The lens part is a single lens or multiple lenses.

6. An electronic device, characterized in that: The electronic device includes the camera module structure according to any one of claims 1-5.

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