CN112911127A - Camera module structure and electronic equipment - Google Patents
Camera module structure and electronic equipment Download PDFInfo
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- CN112911127A CN112911127A CN202110332405.5A CN202110332405A CN112911127A CN 112911127 A CN112911127 A CN 112911127A CN 202110332405 A CN202110332405 A CN 202110332405A CN 112911127 A CN112911127 A CN 112911127A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/58—Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- Microscoopes, Condenser (AREA)
Abstract
The invention discloses a camera module structure and an electronic device comprising the same, comprising: the imaging module comprises a lens part and a photoelectric sensor part, and the lens part and the photoelectric sensor part are configured in a fixed and constant distance manner; and the axial integral focusing module is connected with the imaging module and axially moves the whole of the lens part and the photoelectric sensor part to focus. Through the fixation of camera lens and photoelectric sensor distance, can promote the focusing stroke greatly, can realize the object image conjugation in the motor allows the stroke, has kept high imaging quality, and then has realized the target of the micro-imaging operation of simplification, can combine with electronic equipment, to medical treatment, science popularization education, there is huge prospect in public health.
Description
Technical Field
The invention belongs to the technical field of electronic equipment, in particular to an imaging technology of electronic equipment, and particularly relates to a camera module structure and the electronic equipment.
Background
The microscopic imaging system can realize high-magnification imaging and meet the requirements of people on microscopic world observation. Traditional microsystem formation of image is based on objective and section of thick bamboo mirror, or objective and eyepiece's many camera lenses integrated configuration, in order to realize enlargeing the formation of image and carry out the concatenation cooperation, whole system is bulky, and length overlength can only be if in specific occasion: hospital, laboratory, quality control center, etc.
The miniaturized microscope system is a high demand point in the current microscope imaging industry, and the demand point is that if the miniaturized microscope system is realized, the application scenes and the application fields of microscope imaging can be greatly widened. And the realization of the micro camera module with small volume can be combined with the portable mobile electronic equipment which is widely popularized at present, so that the micro imaging technology is popularized to individuals, and the micro camera module has great promoting effect on the development of the fields of medical treatment, education, public health and the like.
However, the miniaturization of the microscope system has difficulties, and the difficulty lies in that the imaging range of the traditional microscope system is very small, the traditional microscope system is simply reduced in an equal proportion, although the size of the equipment is reduced, the imaging range is reduced in an equal proportion, and the obtained effect and the paid cost are not paid back. Patent application CN111562661A provides an ultra-fine distance lens module scheme, increases imaging system visual field through the free form surface, has solved the problem of imaging range undersize.
However, on the premise of solving the difficulty of the miniaturized microscope system, another problem still exists in realizing the combination of the miniaturized microscope system and the electronic equipment, namely that based on the existing scheme, good focusing imaging of the system cannot be realized. Because the focusing scheme of the lens module of the existing electronic equipment is that the photoelectric sensor is fixed, the optical imaging lens can move for focusing, and the object image conjugation is realized by adjusting the distance between the optical imaging lens and the photoelectric sensor, the scheme is transplanted to a microscopic imaging system, and problems can occur:
1) when the object distance is small (micro distance-ultra micro distance) and the magnification is large, the physical moving distance d generated by the lens moving driven by the focusing motor is compared with the optical object plane moving distance s generated by the lens moving, s is close to or even smaller than d, when the deviation between the object plane to be detected and the designed object plane is large, the stroke of the motor is not enough to realize focusing, and the situation that the object plane to be detected and the surface of the photoelectric sensor cannot realize object image conjugation easily occurs;
2) the lens with a known structure and a relatively fixed inner part can realize the complete optical performance of the lens according to the optical imaging principle, the distance between an object plane to be detected and the lens at the position is called a designed object distance, the distance between the surface of the photoelectric sensor and the lens is called a designed image distance, the distance between the optical imaging lens and the photoelectric sensor is adjusted, so that the lens can leave the position, the imaging resolution is sharply deteriorated, the imaging magnification is not matched for many times, and the phenomenon is more obvious when the object distance is very small (micro distance-ultra micro distance). This is precisely the unacceptable problem of macro/ultra-macro imaging
Because of the above problems, the macro and ultra-macro lenses (e.g. CN111562661A) equipped in the existing electronic devices can be regarded as simplified versions of the micro lenses, and do not have the function of automatic focusing, and the user needs to manually move the device to the position with the best image quality during shooting, which is a troublesome operation, and even slight shake during operation will cause the problems of resolution reduction and inconsistent magnification for macro/ultra-micro imaging, which is one of the reasons that medical or laboratory microscopes and objects are still, and is completely different from the use feelings of the infinity lens and the anti-shake technology of the ordinary mobile phone; the convenience of focusing and the quality of the imaging effect directly determine the operability and the user experience of the equipment. Therefore, innovations are needed for the existing focusing method.
Disclosure of Invention
Aiming at least one of the defects or the improvement requirements in the prior art, the invention provides a camera module structure and electronic equipment, so that the difficulty in the field of miniaturized microscopic imaging is overcome, and the problems that the prior electronic equipment cannot automatically focus in the fields of micro-distance, ultra-micro-distance or microscopic imaging, the operation is complex and the image quality is unstable during photographing are further solved.
To achieve the above object, according to an aspect of the present invention, there is provided a camera module structure, including:
the imaging module comprises a lens part and a photoelectric sensor part, and the lens part and the photoelectric sensor part are configured in a fixed and constant distance manner;
and the axial integral focusing module is connected with the imaging module and axially moves the whole of the lens part and the photoelectric sensor part to focus.
Further preferably, the photosensor section is located on a design image plane imaged by the lens section, and the fixed constant distance is a design image distance.
Further preferably, the axial overall focusing module focuses on a subject located on a design object plane.
Further preferably, the axial overall focusing module is an automatic focusing component, although a manual focusing component is not excluded.
Further preferably, the camera module structure further includes:
a substrate comprising a front hardware region and a rear hardware region;
the imaging module is arranged in the front hardware area, the rear image circuit element is arranged in the rear hardware area and performs data transmission with the imaging module, and the rear image circuit element and the imaging module are in variable distance configuration. The back-end image circuit element is used for receiving, primarily processing and temporarily storing the electrical data signals of the images generated by the imaging module so as to be used by electronic equipment loaded with the system for subsequent continuous use.
Further preferably, a physical data transmission medium is not provided between the front hardware area and the rear hardware area and/or between the rear-end image circuit element and the imaging module, and data transmission is performed in a wireless manner.
Further preferably, the substrate further comprises an intermediate flexible region; the middle flexible area is connected with the front hardware area and the rear hardware area and used for freely stretching and retracting the distance between the front hardware area and the rear hardware area. Further preferably, the intermediate flexible region is a physical data transmission medium between the photosensor section and the back-end image circuit element. The middle flexible area is used for realizing free telescopic movement of the distance between the front hardware area and the rear hardware area, and is used for transmitting a data signal generated by a photoelectric sensor in the camera module loaded in the front hardware area to an image circuit element loaded at the rear end of the rear hardware area, and the flexible component can be a flexible circuit board (FPC) or other flexible components capable of transmitting data.
Further preferably, the imaging module further comprises a sleeve;
the lens part and the photoelectric sensor part are packaged in the sleeve, and the axial integral focusing module actuates the sleeve to focus. The sleeve is used for fixing the distance between the lens part and the photoelectric sensor part, so that the lens part is always positioned on a designed image surface when the lens part is imaged on the photoelectric sensor.
Further preferably, the axial overall focusing module is used for controlling the axial movement of the imaging module to realize automatic focusing of the image of the object, and components used for realizing the function, including but not limited to a voice coil motor, an ultrasonic motor or a linear motor, are all within the protection range.
Further preferably, the lens portion is a single lens or a multiple lens.
Further preferably, the lens portion is a macro lens, a micro-macro lens or a micro-lens.
Further preferably, the photosensor section includes, but is not limited to, cmos photosensors, ccd photosensors, and other electronics for effecting photoelectric conversion.
To achieve the above object, according to another aspect of the present invention, there is also provided an electronic apparatus, wherein: the electronic equipment comprises the camera module structure.
It is further preferred that the electronic device includes, but is not limited to, a portable imaging device including, but not limited to, a cell phone or the like.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the camera module structure and the electronic equipment are particularly suitable for micro-distance, ultra-micro-distance or micro-imaging, and the micro-imaging effect with the magnification of more than 0.5 can be realized by adopting the millimeter-level micro-camera module. The realization of this camera module helps solving the miniaturized difficult problem of the microsystem that awaits the solution urgently, realizes low cost, the high popularity of microscopical imaging system, can combine with electronic equipment, to the medical treatment, science popularization education, there is huge prospect in public health.
2. Aiming at the problems that the existing micro-distance, ultra-micro-distance and micro-module are matched with electronic equipment, automatic focusing cannot be realized, and the imaging quality is poor after focusing is realized, the invention provides a scheme for fixing the distance between a lens and a photoelectric sensor in an imaging module of a camera module and driving the lens and the photoelectric sensor to integrally move axially by an axial integral focusing module for focusing. Through the fixation of camera lens and photoelectric sensor distance, this interval is preferred to be the design image distance, through letting the axial whole module of focusing drive the module integrated movement that forms images, can make the focusing range equal to the motor stroke, avoids appearing traditional focusing scheme (the focusing module only drives the camera lens and removes) the focusing range that appears when closely forming images and is less than the motor stroke and lead to the problem that the focusing range is not enough. The imaging lens and the photoelectric sensor are maintained to be fixed relatively, the sensor is always positioned on a designed image surface of the lens, and the imaging system always works on a designed conjugate image surface at the moment. When the axial integral focusing module drives the imaging module to axially move for focusing, the object plane with detection is positioned on the designed object plane of the lens, the designed conjugate object-image relationship is always kept, the adverse conditions of microscopic imaging such as resolution reduction and magnification change caused by deviation from the designed conjugate object-image relationship can not occur, the focusing is not required to be performed by a user by the user, the operation is simplified, and the high-quality imaging is kept.
3. According to the camera module structure and the electronic equipment, based on the fact that the distance between the adjustable-focus camera module and the rear-end electronic component is not fixed, the flexible circuit component is adopted for interconnection of front-end hardware and rear-end hardware, the front-end and rear-end optoelectronic components can move freely, and meanwhile stable data transmission can be kept.
Drawings
Fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another camera module according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another axial overall focusing module according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another axial overall focusing module according to an embodiment of the present invention;
FIG. 5 is a schematic view of another embodiment of a flexible connection structure of a substrate;
fig. 6 is a schematic structural diagram of another flexible region connection method of a substrate according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1 to 6, the present invention provides a camera module structure and an electronic device including the same, including: imaging module and axial whole focus module.
The imaging module comprises a lens part and a photoelectric sensor part 13, and the lens part and the photoelectric sensor part 13 are arranged at a fixed distance. Further preferably, the photosensor section 13 is located at a design image plane imaged by the lens section. Taking an ideal model of a finite conjugate convex lens as an example, the fixed invariant distance is related to the properties of the lens part itself, and the positions of the photosensor parts determined by different lens parts are different as long as the photosensor parts are all located at the design image plane, and at this time, the fixed invariant distance is the design image distance v of the lens part itself, which is f (M +1), where f is the focal length and M is the magnification.
The lens part is a single lens or a plurality of lenses. The lens portion is a macro lens, an ultra-macro lens or a micro lens, and the following embodiments are only exemplified by the microscope portion 11 as a representative, and do not represent a limitation on the type of the lens. The photosensor sections include, but are not limited to, cmos photosensors, ccd photosensors, and other electronics for effecting photoelectric conversion.
The axial integral focusing module is connected with the imaging module, and the lens part and the photoelectric sensor part 13 are moved axially to carry out focusing. Further preferably, the axial overall focusing module focuses on a subject located on a design object plane. Further preferably, the axial overall focusing module is an automatic focusing component, such as a voice coil motor, an ultrasonic motor or a linear motor, etc., although a manual focusing component is not excluded.
Further preferably, the camera module structure further includes:
a substrate comprising a front hardware area 1 and a rear hardware area 3;
the imaging module is arranged in the front hardware area 1, the rear-end image circuit element is arranged in the rear hardware area 3 and performs data transmission with the imaging module, and the rear-end image circuit element and the imaging module are in variable distance configuration. The back-end image circuit element is used for receiving, primarily processing and temporarily storing the electrical data signals of the images generated by the imaging module so as to be used by electronic equipment loaded with the system for subsequent continuous use.
Further preferably, a physical data transmission medium is not provided between the front hardware area 1 and the rear hardware area 3, and/or between the rear-end image circuit element and the imaging module, and data transmission is performed in a wireless manner.
Further preferably, the substrate further comprises an intermediate flexible region 2; the middle flexible area 2 is connected with the front hardware area 1 and the rear hardware area 3 and is used for freely extending and contracting the distance between the front hardware area and the rear hardware area 3. Further preferably, the intermediate flexible region 2 is a physical data transmission medium between the photosensor section 13 and the back-end image circuit element. The middle flexible area 2 is used for realizing free telescopic movement of the distance between the front and rear hardware areas 3, and is used for transmitting a data signal generated by a photoelectric sensor in a camera module loaded by the front hardware area 1 to an image circuit element loaded at the rear end of the rear hardware area 3, and the flexible component can be a Flexible Printed Circuit (FPC) or other flexible components capable of transmitting data.
Further preferably, the imaging module further comprises a sleeve, such as a rigid sleeve 10;
the lens part and the photoelectric sensor part 13 are packaged in the sleeve, and the sleeve is actuated to focus by the axial overall focusing module. The sleeve is used for fixing the distance between the lens part and the photoelectric sensor part 13, so that the lens part is always positioned on a designed image surface when the lens part is imaged on the photoelectric sensor.
In the invention, the imaging module comprises a microscope lens part and a photoelectric sensor, wherein the distance between the microscope lens part and the photoelectric sensor is relatively fixed, and the microscope lens part is kept to be imaged at the designed image surface position all the time. The axial integral focusing module adopts a motor, the imaging module is driven by the axial integral focusing module, the imaging module automatically focuses to the position of the designed object surface when photographing, the operation is convenient and quick, and the focusing stroke can sufficiently cover the designed object surface. The rear-end image circuit element is in mechanical connection and circuit connection with the imaging module and used for receiving, processing and storing the data signals generated by the imaging module. In order to solve the influence caused by unfixed distance between the imaging module and the rear-end image circuit element, the imaging module and the rear-end image circuit element are connected by adopting a flexible circuit element, so that the free movement of the imaging module and the stable transmission of data signals are ensured. All the devices are arranged on the substrate to ensure the stability of the whole structure.
The following detailed description is made with reference to the accompanying drawings which illustrate various embodiments.
Referring to fig. 1, a schematic structural diagram of a micro camera module is shown, which includes an imaging module, an axial overall focusing module, a rear-end image circuit element, and a substrate. The imaging module comprises a micro lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate comprises 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, the middle flexible area 2 is connected with the front hardware area 1 and the rear hardware area 3 and used for realizing free telescopic movement of the distance between the front hardware area and the rear hardware area, and the rear-end image circuit element is installed in the rear hardware area 3. The dimensions, locations, distances, etc. of the various components are merely illustrative and may be implemented in any configuration that satisfies the above description, including the configuration depicted in fig. 1.
Specifically, in the imaging module, the micro lens portion 11 for optical imaging and the photoelectric sensor portion 13 for photoelectric conversion are mounted on the rigid sleeve 10, and the rigid sleeve 10 is used for fixing the distance between the micro lens portion 11 and the photoelectric sensor portion 13, so that the micro lens portion 11 is always on the designed image plane when imaging on the photoelectric sensor 13. The structure capable of realizing the above function is considered to be the same deformation of the rigid sleeve 10 without the difference of the shape and size.
Specifically, the axial overall focusing module comprises a focusing module stator 121 and a focusing module mover 122, wherein the focusing module stator 121 acts to keep the axial overall focusing module position relatively stable, and the focusing module mover 122 acts to control the imaging module to move axially so as to realize automatic focusing on object imaging, so that the object to be photographed is on a designed object plane when the microscope lens portion 11 meets imaging requirements.
In particular, in the axial overall focusing module in the embodiment shown in fig. 1, the focusing module stator 121 and the focusing module mover 122 perform focusing adjustment in a conventional voice coil motor focusing manner, that is, the focusing module mover 122 is suspended in the middle of the focusing module stator 121, and axial movement of the focusing module mover 122 is realized through electromagnetic field control, so as to drive the imaging module to move synchronously.
Specifically, the middle flexible region 2 of the substrate is mainly configured as a flexible circuit element 21, and functions to realize the free telescopic movement of the distance between the front and rear hardware regions, and is used to transmit the data signal generated by the photosensor 13 in the imaging module loaded on the front hardware region 1 to the image circuit element loaded on the rear hardware region 3.
In particular, to achieve the free telescopic movement, the flexible circuit element 21 is bent to be distributed in a zigzag shape, so that the flexible circuit element 21 is not affected by mechanical stress during the telescopic process, and normal data transmission can be always maintained.
Optionally, referring to fig. 2, a schematic structural diagram of another imaging module according to an embodiment of the present invention is shown, where the imaging module includes an imaging module, an axial overall focusing module, a rear-end image circuit element, and a substrate. The imaging module comprises a micro lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate comprises 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, the middle flexible area 2 is connected with the front hardware area 1 and the rear hardware area 3 and used for realizing free telescopic movement of the distance between the front hardware area and the rear hardware area, and the rear-end image circuit element is installed in the rear hardware area 3. The dimensions, locations, distances, etc. of the various components are merely illustrative and may be implemented in any configuration that satisfies the above description, including the configuration depicted in fig. 1.
Specifically, in the imaging module, the micro lens portion 11 for optical imaging and the photoelectric sensor portion 13 for photoelectric conversion are mounted on the rigid sleeve 10, and the rigid sleeve 10 is used for fixing the distance between the micro lens portion 11 and the photoelectric sensor portion 13, so that the micro lens portion 11 is always on the designed image plane when imaging on the photoelectric sensor 13. The structure capable of realizing the above function is considered to be the same deformation of the rigid sleeve 10 without the difference of the shape and size.
Particularly, the microscope head 11 is composed of the microscope objective 111 and the micro-image mirror 112, and has a function of conjugate imaging of design object plane information on a design image plane, the design object plane and the design image plane are controlled by the microscope objective 111 and the micro-image mirror 112 respectively, the distance between the microscope objective 111 and the micro-image mirror 112 is relatively free, and the influence of installation tolerance can be reduced.
Specifically, the axial overall focusing module comprises a focusing module stator 121 and a focusing module mover 122, wherein the focusing module stator 121 acts to keep the axial overall focusing module position relatively stable, and the focusing module mover 122 acts to control the imaging module to move axially so as to realize automatic focusing on object imaging, so that the object to be photographed is on a designed object plane when the microscope lens portion 11 meets imaging requirements.
In particular, in the axial overall focusing module in the embodiment shown in fig. 2, the focusing module stator 121 and the focusing module mover 122 perform focusing adjustment in a conventional 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.
Specifically, the middle flexible region 2 of the substrate is mainly configured as a flexible circuit element 21, and functions to realize the free telescopic movement of the distance between the front and rear hardware regions, and is used to transmit the data signal generated by the photosensor 13 in the imaging module loaded on the front hardware region 1 to the image circuit element loaded on the rear hardware region 3.
In particular, to achieve the free telescopic movement, the flexible circuit element 21 is bent to be distributed in a zigzag shape, so that the flexible circuit element 21 is not affected by mechanical stress during the telescopic process, and normal data transmission can be always maintained.
Optionally, referring to fig. 3, a schematic structural diagram of another imaging module according to an embodiment of the present invention is shown, where the imaging module includes an imaging module, an axial overall focusing module, a rear-end image circuit element, and a substrate. The imaging module comprises a micro lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate comprises 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, the middle flexible area 2 is connected with the front hardware area 1 and the rear hardware area 3 and used for realizing free telescopic movement of the distance between the front hardware area and the rear hardware area, and the rear-end image circuit element is installed in the rear hardware area 3. The dimensions, locations, distances, etc. of the various components are merely illustrative and may be implemented in any configuration that satisfies the above description, including the configuration depicted in fig. 1.
Specifically, in the imaging module, the micro lens portion 11 for optical imaging and the photoelectric sensor portion 13 for photoelectric conversion are mounted on the rigid sleeve 10, and the rigid sleeve 10 is used for fixing the distance between the micro lens portion 11 and the photoelectric sensor portion 13, so that the micro lens portion 11 is always on the designed image plane when imaging on the photoelectric sensor 13. The structure capable of realizing the above function is considered to be the same deformation of the rigid sleeve 10 without the difference of the shape and size.
Specifically, the axial integral focusing module comprises a focusing module front stator 121, a focusing module mover 122 and a focusing module rear stator 123, wherein the focusing module front stator 121 and the focusing module rear stator 123 are used for keeping the axial integral focusing module position relatively stable, and the focusing module mover 122 is used for controlling the imaging module to move axially so as to realize automatic focusing on object imaging, so that the object to be shot is located on a designed object plane when the microscope lens portion 11 is used for imaging.
In particular, in the embodiment shown in fig. 3, the focusing module front stator 121, the focusing module mover 122 and the focusing module rear stator 123 perform focusing adjustment in a conventional ultrasonic motor focusing manner, that is, the focusing module mover 122 is included in the middle of the focusing module front stator 121 and the focusing module rear stator 123, and the axial movement of the focusing module mover 122 is realized through piezoelectric ceramic control, so as to drive the imaging module to move synchronously.
Specifically, the middle flexible region 2 of the substrate is mainly configured as a flexible circuit element 21, and functions to realize the free telescopic movement of the distance between the front and rear hardware regions, and is used to transmit the data signal generated by the photosensor 13 in the imaging module loaded on the front hardware region 1 to the image circuit element loaded on the rear hardware region 3.
In particular, to achieve the free telescopic movement, the flexible circuit element 21 is bent to be distributed in a zigzag shape, so that the flexible circuit element 21 is not affected by mechanical stress during the telescopic process, and normal data transmission can be always maintained.
Optionally, referring to fig. 4, a schematic structural diagram of another imaging module according to an embodiment of the present invention is shown, where the imaging module includes an imaging module, an axial overall focusing module, a rear-end image circuit element, and a substrate. The imaging module comprises a micro lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate comprises 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, the middle flexible area 2 is connected with the front hardware area 1 and the rear hardware area 3 and used for realizing free telescopic movement of the distance between the front hardware area and the rear hardware area, and the rear-end image circuit element is installed in the rear hardware area 3. The dimensions, locations, distances, etc. of the various components are merely illustrative and may be implemented in any configuration that satisfies the above description, including the configuration depicted in fig. 1.
Specifically, in the imaging module, the micro lens portion 11 for optical imaging and the photoelectric sensor portion 13 for photoelectric conversion are mounted on the rigid sleeve 10, and the rigid sleeve 10 is used for fixing the distance between the micro lens portion 11 and the photoelectric sensor portion 13, so that the micro lens portion 11 is always on the designed image plane when imaging on the photoelectric sensor 13. The structure capable of realizing the above function is considered to be the same deformation of the rigid sleeve 10 without the difference of the shape and size.
Specifically, the axial overall focusing module comprises a focusing module stator 121 and a focusing module mover 122, wherein the focusing module stator 121 acts to keep the axial overall focusing module position relatively stable, and the focusing module mover 122 acts to control the imaging module to move axially so as to realize automatic focusing on object imaging, so that the object to be photographed is on a designed object plane when the microscope lens portion 11 meets imaging requirements.
In particular, in the embodiment shown in fig. 4, the focusing module stator 121 and the focusing module mover 122 are adjusted by focusing with a conventional step motor, that is, the focusing module mover 122 is rotatably connected to the protruding portion of the focusing module stator 121, and the electric pulse signal is converted into corresponding angular displacement or linear displacement control to realize the axial movement of the focusing module mover 122, so as to drive the imaging module to move synchronously.
Particularly, based on the structural form of the stepping motor, besides the screw rod sliding block structure shown in the figure, the stepping motor can also be a gear rack structure, which is characterized in that the stepping motor is subdivided in axial movement, and other axial focusing modes adopting the stepping motor are also regarded as similar deformation of the structure shown in fig. 4.
Specifically, the middle flexible region 2 of the substrate is mainly configured as a flexible circuit element 21, and functions to realize the free telescopic movement of the distance between the front and rear hardware regions, and is used to transmit the data signal generated by the photosensor 13 in the imaging module loaded on the front hardware region 1 to the image circuit element loaded on the rear hardware region 3.
In particular, to achieve the free telescopic movement, the flexible circuit element 21 is bent to be distributed in a zigzag shape, so that the flexible circuit element 21 is not affected by mechanical stress during the telescopic process, and normal data transmission can be always maintained.
Referring to fig. 5, a schematic structural diagram of a micro camera module is shown, which includes an imaging module, an axial overall focusing module, a rear-end image circuit element, and a substrate. The imaging module comprises a micro lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate comprises 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, the middle flexible area 2 is connected with the front hardware area 1 and the rear hardware area 3 and used for realizing free telescopic movement of the distance between the front hardware area and the rear hardware area, and the rear-end image circuit element is installed in the rear hardware area 3. The dimensions, locations, distances, etc. of the various components are merely illustrative and may be implemented in any configuration that satisfies the above description, including the configuration depicted in fig. 1.
Specifically, in the imaging module, the micro lens portion 11 for optical imaging and the photoelectric sensor portion 13 for photoelectric conversion are mounted on the rigid sleeve 10, and the rigid sleeve 10 is used for fixing the distance between the micro lens portion 11 and the photoelectric sensor portion 13, so that the micro lens portion 11 is always on the designed image plane when imaging on the photoelectric sensor 13. The structure capable of realizing the above function is considered to be the same deformation of the rigid sleeve 10 without the difference of the shape and size.
Specifically, the axial overall focusing module comprises a focusing module stator 121 and a focusing module mover 122, wherein the focusing module stator 121 acts to keep the axial overall focusing module position relatively stable, and the focusing module mover 122 acts to control the imaging module to move axially so as to realize automatic focusing on object imaging, so that the object to be photographed is on a designed object plane when the microscope lens portion 11 meets imaging requirements.
In particular, in the axial overall focusing module in the embodiment shown in fig. 5, the focusing module stator 121 and the focusing module mover 122 perform focusing adjustment in a conventional 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.
Specifically, the middle flexible region 2 of the substrate is mainly configured as a flexible circuit element 21, and functions to realize the free telescopic movement of the distance between the front and rear hardware regions, and is used to transmit the data signal generated by the photosensor 13 in the imaging module loaded on the front hardware region 1 to the image circuit element loaded on the rear hardware region 3.
In particular, to achieve free telescopic movement, the flexible circuit element 21 is bent to be distributed in a shape like a Chinese character 'shan' with a plurality of U shapes, so that the flexible circuit element 21 is not affected by mechanical stress in the telescopic process and can always maintain normal data transmission.
Referring to fig. 6, a schematic structural diagram of a micro camera module is shown, which includes an imaging module, an axial overall focusing module, a rear-end image circuit element, and a substrate. The imaging module comprises a micro lens part 11 for optical imaging and a photoelectric sensor part 13 for photoelectric conversion. The substrate comprises 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, the middle flexible area 2 is connected with the front hardware area 1 and the rear hardware area 3 and used for realizing free telescopic movement of the distance between the front hardware area and the rear hardware area, and the rear-end image circuit element is installed in the rear hardware area 3. The dimensions, locations, distances, etc. of the various components are merely illustrative and may be implemented in any configuration that satisfies the above description, including the configuration depicted in fig. 1.
Specifically, in the imaging module, the micro lens portion 11 for optical imaging and the photoelectric sensor portion 13 for photoelectric conversion are mounted on the rigid sleeve 10, and the rigid sleeve 10 is used for fixing the distance between the micro lens portion 11 and the photoelectric sensor portion 13, so that the micro lens portion 11 is always on the designed image plane when imaging on the photoelectric sensor 13. The structure capable of realizing the above function is considered to be the same deformation of the rigid sleeve 10 without the difference of the shape and size.
Specifically, the axial overall focusing module comprises a focusing module stator 121 and a focusing module mover 122, wherein the focusing module stator 121 acts to keep the axial overall focusing module position relatively stable, and the focusing module mover 122 acts to control the imaging module to move axially so as to realize automatic focusing on object imaging, so that the object to be photographed is on a designed object plane when the microscope lens portion 11 meets imaging requirements.
In particular, in the axial overall focusing module in the embodiment shown in fig. 6, the focusing module stator 121 and the focusing module mover 122 perform focusing adjustment in a conventional 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.
Specifically, the middle flexible region 2 of the substrate is mainly configured as a flexible circuit element 21, and functions to realize the free telescopic movement of the distance between the front and rear hardware regions, and is used to transmit the data signal generated by the photosensor 13 in the imaging module loaded on the front hardware region 1 to the image circuit element loaded on the rear hardware region 3.
In particular, to achieve free telescopic movement, the flexible circuit element 21 is bent to be distributed in a spiral shape, so that the flexible circuit element 21 is not affected by mechanical stress during the telescopic process, and normal data transmission can be always maintained.
In summary, compared with the prior art, the scheme of the invention has the following significant advantages:
the camera module structure and the electronic equipment are particularly suitable for micro-distance, ultra-micro-distance or micro-imaging, and the micro-imaging effect with the magnification of more than 0.5 can be realized by adopting the millimeter-level micro-camera module. The realization of this camera module helps solving the miniaturized difficult problem of the microsystem that awaits the solution urgently, realizes low cost, the high popularity of microscopical imaging system, can combine with electronic equipment, to the medical treatment, science popularization education, there is huge prospect in public health.
Aiming at the problems that the existing micro-distance, ultra-micro-distance and micro-module are matched with electronic equipment, automatic focusing cannot be realized, and the imaging quality is poor after focusing is realized, the invention provides a scheme for fixing the distance between a lens and a photoelectric sensor in an imaging module of a camera module and driving the lens and the photoelectric sensor to integrally move axially by an axial integral focusing module for focusing. Through the fixation of camera lens and photoelectric sensor distance, this interval is preferred to be the design image distance, through letting the axial whole module of focusing drive the module integrated movement that forms images, can make the focusing range equal to the motor stroke, avoids appearing traditional focusing scheme (the focusing module only drives the camera lens and removes) the focusing range that appears when closely forming images and is less than the motor stroke and lead to the problem that the focusing range is not enough. The imaging lens and the photoelectric sensor are maintained to be fixed relatively, the sensor is always positioned on a designed image surface of the lens, and the imaging system always works on a designed conjugate image surface at the moment. When the axial integral focusing module drives the imaging module to axially move for focusing, the object plane with detection is positioned on the designed object plane of the lens, the designed conjugate object-image relationship is always kept, the adverse conditions of microscopic imaging such as resolution reduction and magnification change caused by deviation from the designed conjugate object-image relationship can not occur, the focusing is not required to be performed by a user by the user, the operation is simplified, and the high-quality imaging is kept.
According to the camera module structure and the electronic equipment, based on the fact that the distance between the adjustable-focus camera module and the rear-end electronic component is not fixed, the flexible circuit component is adopted for interconnection of front-end hardware and rear-end hardware, the front-end and rear-end optoelectronic components can move freely, and meanwhile stable data transmission can be kept.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
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 not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A camera module structure, comprising:
the imaging module comprises a lens part and a photoelectric sensor part, and the lens part and the photoelectric sensor part are configured in a fixed and constant distance manner;
and the axial integral focusing module is connected with the imaging module and axially moves the whole of the lens part and the photoelectric sensor part to focus.
2. The camera module structure of claim 1, wherein:
the photoelectric sensor part is positioned on a design image surface imaged by the lens part.
3. The camera module structure of claim 1, wherein:
the axial integral focusing module focuses to the position of a shot object on a designed object surface.
4. The camera module structure of claim 1, wherein:
the camera module structure further comprises:
a substrate comprising a front hardware region and a rear hardware region;
the imaging module is arranged in the front hardware area, the rear image circuit element is arranged in the rear hardware area and performs data transmission with the imaging module, and the rear image circuit element and the imaging module are in variable distance configuration.
5. The camera module structure of claim 4, wherein:
the substrate further comprises an intermediate flexible region;
the middle flexible area is connected with the front hardware area and the rear hardware area and used for freely stretching and retracting the distance between the front hardware area and the rear hardware area.
6. The camera module structure of claim 5, wherein:
the intermediate flexible region is a physical data transmission medium between the photosensor section and the back-end image circuit element.
7. The camera module structure of claim 1, wherein:
the imaging module further comprises a sleeve;
the lens part and the photoelectric sensor part are packaged in the sleeve, and the axial integral focusing module actuates the sleeve to focus.
8. The camera module structure of claim 1, wherein:
the axial integral focusing module comprises a voice coil motor, an ultrasonic motor or a linear motor.
9. The camera module structure of claim 1, wherein:
the lens part is a single lens or a plurality of lenses.
10. An electronic device, characterized in that: the electronic device comprising a camera module structure according to any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110332405.5A CN112911127A (en) | 2021-03-29 | 2021-03-29 | Camera module structure and electronic equipment |
| PCT/CN2021/106593 WO2022205678A1 (en) | 2021-03-29 | 2021-07-15 | Camera module structure and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110332405.5A CN112911127A (en) | 2021-03-29 | 2021-03-29 | Camera module structure and electronic equipment |
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| CN202110332405.5A Pending CN112911127A (en) | 2021-03-29 | 2021-03-29 | Camera module structure and electronic equipment |
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| WO (1) | WO2022205678A1 (en) |
Cited By (1)
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| WO2022205678A1 (en) * | 2021-03-29 | 2022-10-06 | 肯维捷斯（武汉）科技有限公司 | Camera module structure and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001008083A (en) * | 1999-06-23 | 2001-01-12 | Seiji Ishikawa | Video microscope |
| TW448041B (en) * | 2000-08-04 | 2001-08-01 | Kowa Optics Corp | Amplification examination device |
| CN110351470A (en) * | 2019-07-31 | 2019-10-18 | 肯维捷斯（武汉）科技有限公司 | A kind of camera module |
| CN212009127U (en) * | 2020-03-27 | 2020-11-24 | 肯维捷斯（武汉）科技有限公司 | Miniaturized high-imaging-quality close-range imaging module |
| CN112911127A (en) * | 2021-03-29 | 2021-06-04 | 肯维捷斯（武汉）科技有限公司 | Camera module structure and electronic equipment |
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| WO2022205678A1 (en) * | 2021-03-29 | 2022-10-06 | 肯维捷斯（武汉）科技有限公司 | Camera module structure and electronic device |
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