Patent Publication Number: US-2023161082-A1

Title: Lens, camera module and manufacturing method thereof

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a Divisional of copending application No. U.S. Ser. No. 16/479,403, filed on Jul. 19, 2019, which is the National Phase under 35 U.S.C. § 371 of International Application No. PCT/CN2018/074319, filed on Jan. 26, 2018, which claims priority under 35 U.S.C. § 119(a) to and benefit of Chinese Patent Application No. 201710057589.2, entitled “CAMERA LENS AND METHOD FOR MANUFACTURING SAME, AND CAMERA MODULE”, filed on Jan. 26, 2017, and Chinese Patent Application No. 201720107077.8, entitled “CAMERA LENS AND MODULE OF MAKING A VIDEO RECORDING”, filed on Jan. 26, 2017. The above-referenced applications are incorporated into the present application by reference herein in their entirety. 
    
    
     TECHNICAL FIELD 
     The present invention relates to the field of camera modules, and further relates to a lens and a camera module and a manufacturing method thereof, in particular to an ultra-narrow lens and a camera module, wherein the body shape of the camera module is greatly reduced, which provides the convenience for a smart device to compactly use the camera module. 
     TECHNICAL BACKGROUND 
     With the development of smart devices, camera modules are already indispensable devices in the smart devices. Moreover, the high performance of the camera modules is a main direction for the improvement and development of smart devices, and is the key to the performance of smart devices. 
     At present, the conventional smart devices, such as smart phones, smart computers, smart homes, etc., need to leave very large spaces for the camera modules, especially need to provide wide edges for the camera modules when designing the frames. However, as the smart devices are seeking for the trend of a small size and a narrow bezel, the camera modules must also be reduced in volume. How to ensure the normal operation of the lens and the intact function of the camera module while reducing the volume is a problem that needs to be solved. 
     A conventional lens and a conventional camera module are as shown in  FIG.  1   . The conventional camera module includes at least one lens sheet  10 P, a lens barrel  20 P, a lens base  30 P, and a circuit assembly  40 P, wherein the lens sheet  10 P is a round lens sheet, the lens barrel  20 P has a cylindrical tubular structure, the lens base  30 P has a square structure, and the circuit assembly  40 P has a square shape. Herein, since the lens barrel  20 P encloses and supports the lens sheet  10 P, the outer shapes of the lens barrel  20 P and the lens sheet  10 P correspond to each other, that is, the lens sheet  22 P and the lens barrel  20 P are both a complete round shape when viewed from an axial direction. However, the lens base  30 P and the circuit assembly  40 P are both square, and a main photosensitive chip  41 P in the circuit assembly  40 P is also square. Each of the lens sheets  10  P has a round light-passing portion and a non-light-passing portion. Therefore, a lot of light is not received by the circuit assembly  40 P, but falls on components having relatively smooth surfaces of the circuit assembly  40 P, such as gold wires, pads, lines, lens bases, molded parts, glue, etc., and returns to an imaging region after multiple reflections to form stray light. Then, if it can be modified from the lens sheet  10 P, unnecessary portions are reduced, so that the lens barrel  20 P, the lens base  30 P, and the circuit assembly  40 P are correspondingly reduced in unnecessary portions, and the volume of the camera module may be reduced in the whole-body shape. Moreover, in practice, in an extreme case, as long as the circuit assembly  40 P is slightly larger than the photosensitive chip, the lens barrel  20 P has a size corresponding to the circuit assembly  40 P, and the lens sheet  10 P has a size corresponding to the photosensitive chip of the circuit assembly  40 P, the complete function of the camera module can be ensured. 
     The conventional camera module leaves a lot of safety space for the circuit assembly  40 P, especially for the photosensitive chip  41 P to stably operate for a long time, and a lot of space is expanded in the circuit assembly  40 P. Moreover, in order to ensure an effective clear aperture, the conventional lens sheet  10 P uses a spacer or a light blocking plate to block unwanted light. However, the light may still be refracted and reflected on a portion of the lens sheet to form stray light. 
     The above factors not only decrease the imaging effect, but also cause many redundant portions existing in the overall body shape of the camera module. This is disadvantageous to a compact use environment and an application of a highly integrated system. 
     On the other hand, with the development of high pixel camera modules, the number of lens sheets of the lens is continuously increasing, for example, up to the number of lens sheets of 4p, 5p, 6p, 7p or more, and the volume of the lens is also continuously increasing. Therefore, the influence of the lens on the camera module is also becoming bigger and bigger, and the improvements to the lens also become more important. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide a lens and a camera module and a manufacturing method thereof, which utilize a compact body shape, reduce an unnecessary volume, and are effectively applied in a smart device in the case of ensuring a complete function. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the lens comprises at least one edge-cut lens sheet, wherein the edge-cut lens sheet has at least one chord edge, an imaging region and a non-imaging region, and the body shape of the edge-cut lens sheet will be reduced by the chord edge, but the imaging region of the edge-cut lens sheet will not be affected. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the camera module further comprises an edge-cut lens barrel, a base and a circuit assembly, and wherein the edge-cut lens barrel and the base match with the body shape of the edge-cut lens sheet to effectively process light in the circuit assembly. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the chord edge of the lens sheet reduces the influence from the non-imaging region while not affecting the imaging region. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the edge-cut lens sheet further comprises at least one circular edge, and the difference in shape of the chord edge and the circular edge can decrease the difficulties in the assembly of the edge-cut lens sheet. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the chord edge of the edge-cut lens sheet may be a straight line, or may be an arc, and with respect to the round shape of the circular edge, the chord edge may reduce time and cost spent in the processing and design of a mold, significantly reducing the use of materials. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the corresponding processing yield of the chord edge of the edge-cut lens sheet is improved relative to the circular edge. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the non-imaging region of the edge-cut lens sheet is much reduced relative to a conventional lens sheet, and the light passing through the non-imaging region is also reduced accordingly, and the imaging effect and imaging efficiency are improved. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein due to the reduction of the body shape of the edge-cut lens sheet, the edge-cut lens barrel, the base, and the circuit assembly are also correspondingly reduced in body shape, so that the overall body shape of the camera module is narrowed. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein due to the design of the chord edge of the edge-cut lens sheet, the edge-cut lens barrel and the base have corresponding chord edges portions in their shapes. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the position of the chord edge portion of the edge-cut lens barrel corresponding to the base may be linear or arc, and in order to manufacture the chord edge portion of the edge-cut lens barrel, a device and a mold used do not have to be round. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the time and cost spent in the design and processing of the chord edge portion of the edge-cut lens barrel may be reduced relative to the conventional round shape, and the corresponding processing yield will be improved. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the corresponding cooperation of the chord edge portion of the edge-cut lens barrel and the base facilitates the assembly of the camera module, and the installation direction can be quickly determined. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the circuit assembly can be mounted more compactly by the reduction of the body shapes of the edge-cut lens barrel and the base. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the edge-cut lens sheet is disposed correspondingly to the photosensitive chip of the circuit assembly, and the non-imaging region of the edge-cut lens sheet is reduced relative to the body shape of the photosensitive chip of the circuit assembly, and the influence is also decreased accordingly. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the edge-cut lens sheet is one-shot molded by injection molding, and the chord edge is formed correspondingly, so that the production difficulty is reduced while the manufacturing cost is reduced. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the edge-cut lens barrel and other devices corresponding to the edge-cut lens sheet are one-shot molded by injection molding, and their manufacturing molds also have body shapes corresponding to the lens sheet. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein by the corresponding edge-cut lens sheet, the edge-cut lens barrel, the base and the circuit assembly, they can readily correspond to each other when assembling, thereby simplifying the assembly process. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein by the corresponding edge-cut lens sheet, the edge-cut lens barrel, the base and the circuit assembly, the body shape of the camera module is correspondingly reduced, achieving an ultra-narrow camera module with respect to the conventional art. 
     Another object of the present invention is to provide a lens and a camera module and a manufacturing method thereof, wherein the lens is matched with the design requirement of the base, so that the size of the camera module can be miniaturized as a whole. 
     In order to achieve at least one of the above objects, an aspect of the present invention provides a lens comprising: at least one edge-cut lens sheet, wherein the edge-cut lens sheet includes at least one chord edge and at least one circular edge, the chord edge and the circular edge being adjacently connected to each other, and wherein the chord edge and the circular edge have different curvatures. 
     According to some embodiments, in the lens, the chord edge has a curvature of zero and is a straight line segment. 
     According to some embodiments, in the lens, the circular edge has a curvature greater than 0, and is an arc line segment. 
     According to some embodiments, in the lens, the chord edge is a straight line and the circular edge is a circular arc. 
     According to some embodiments, in the lens, the number of the chord edges and the number of the circular edges are 1, and the chord edge has a curvature of zero and is a straight line segment. 
     According to some embodiments, in the lens, the number of chord edges is 2, and each of the chord edges has a curvature of 0 and is a straight line segment. 
     According to some embodiments, in the lens, the number of chord edges is 2, the number of circular edges is 2, and the chord edges are symmetrically distributed. 
     According to some embodiments, in the lens, the chord edges are straight line segments. 
     According to some embodiments, in the lens, the lens comprises a plurality of lens sheets, at least one of which is the edge-cut lens sheet and at least one of which is a round lens sheet. 
     According to some embodiments, in the lens, the edge-cut lens sheet is larger than the round lens sheet in size. 
     According to some embodiments, in the lens, the lens comprises four lens sheets, wherein the lens sheets are sequentially increased in size, and wherein the lens sheet having the largest size is the edge-cut lens sheet. 
     According to some embodiments, in the lens, the lens comprises an edge-cut lens barrel, in which the edge-cut lens sheet is mounted. 
     According to some embodiments, in the lens, the edge-cut lens barrel includes a chord edge portion and a circular edge portion, and wherein the chord edge portion and the circular edge portion have different curvatures in their section edges. 
     According to some embodiments, in the lens, the chord edge of the edge-cut lens sheet corresponds to the chord edge portion of the edge-cut lens barrel. 
     According to some embodiments, in the lens, the edge-cut lens sheet is one-shot molded by means of injection molding. 
     According to some embodiments, the lens comprises at least one optical path element, which is disposed adjacently to the lens sheets to facilitate formation of a predetermined light passage in the lens sheets. 
     According to some embodiments, in the lens, the outer edge shape of the optical path element at the edge-cut lens sheet is consistent with the shape of the edge-cut lens sheet. 
     According to some embodiments, in the lens, the optical path element is selected from the group consisting of a gasket, a shim and a coating. 
     Another aspect of the present invention provides a camera module, comprising: a lens, wherein the lens comprises at least one edge-cut lens sheet, wherein the edge-cut lens sheet includes at least one chord edge and at least one circular edge, the chord edge and the circular edge being adjacently connected to each other, and wherein the chord edge and the circular edge have different curvatures; and a photosensitive assembly, wherein the lens is located in the photosensitive path of the photosensitive assembly. 
     According to some embodiments, in the camera module, the photosensitive assembly includes at least one base, at least one photosensitive chip and at least one circuit board, and wherein the base is disposed on the circuit board so as to provide a mounting position, the photosensitive chip is electrically connected to the circuit board, and the lens is located in the photosensitive path of the photosensitive chip. 
     According to some embodiments, in the camera module, the base is integrally formed on the circuit board to form at least one light window to provide a light passage for the photosensitive chip. 
     According to some embodiments, in the camera module, the base includes a base main body and a supplementary base, the base main body has a notch, and the supplementary base supplements the notch to form a closed window. 
     According to some embodiments, in the camera module, the edge-cut position of the lens corresponds to the position of the supplementary base. 
     According to some embodiments, in the camera module, the base is adhesively fixed to the circuit board. 
     According to some embodiments, in the camera module, the circuit board includes a circuit board main body and at least one electronic element, which is disposed on the circuit board main body, and wherein the base is integrally formed on the circuit board main body and encapsulates at least one of the electronic elements. 
     According to some embodiments, in the camera module, the circuit board includes a circuit board main body and at least one electronic element, wherein at least one of the electronic elements is disposed at the bottom of the circuit board main body, and the base is integrally formed at the top of the circuit board main body. 
     According to some embodiments, in the camera module, the circuit board has a sinking region, in which the photosensitive chip is sunkenly disposed. 
     According to some embodiments, in the camera module, the sinking region is selected as a groove or a through hole. 
     According to some embodiments, in the camera module, the photosensitive chip has a photosensitive region and a non-photosensitive region, and the base integrally packages at least a part of the non-photosensitive region. 
     According to some embodiments, in the camera module, the camera module comprises at least one filter element, and wherein the base integrally packages the filter element. 
     According to some embodiments, in the camera module, the camera module comprises a blocking lens, which is located above the photosensitive chip and is integrally packaged by the base. 
     According to some embodiments, in the camera module, the blocking lens is the edge-cut lens sheet. 
     According to some embodiments, the camera module comprises a lens carrying element, and wherein the lens is mounted to the lens carrying element, and the lens carrying element is mounted to the base. 
     According to some embodiments, in the camera module, the lens carrying element is a driving component to form a moving focus camera module. 
     According to some embodiments, in the camera module, the lens carrying element is a lens fixing component to form a fixed focus camera module. 
     According to some embodiments, the lens carrying element is integrally connected to the base, and the lens is mounted to the lens carrying element to form a fixed focus module. 
     According to some embodiments, a plurality of camera modules form an array of camera modules. 
     Another aspect of the present invention provides a lens, comprising: at least one edge-cut lens sheet and an edge-cut lens barrel, in which the edge-cut lens sheet is mounted, wherein the edge-cut lens sheet includes at least one chord edge and at least one circular edge, and the chord edge and the circular edge are adjacently connected to each other, and wherein the chord edge and the circular edge have different curvatures, the edge-cut lens barrel includes a chord edge portion, which corresponds to the chord edge of the edge-cut lens sheet so as to reduce the volume of the lens. 
     Another aspect of the present invention provides a camera module, comprising: 
     a lens, which comprises at least one edge-cut lens sheet and an edge-cut lens barrel, in which the edge-cut lens sheet is mounted, wherein the edge-cut lens sheet includes at least one chord edge and at least one circular edge, and the chord edge and the circular edge are adjacently connected to each other, and wherein the chord edge and the circular edge have different curvatures, the edge-cut lens barrel includes a chord edge portion, which corresponds to the chord edge of the edge-cut lens sheet so as to reduce the volume of the lens; and 
     a photosensitive assembly, wherein the lens is in the photosensitive path of the photosensitive assembly. 
     According to some embodiments, the circuit board includes a first board body and a second board body, and the first board body and the second board body are electrically connected by a connecting medium, the second board body is used for electrically connecting an electronic device, the base is disposed on the first board body, and the chord edge of the edge-cut lens sheet is located on the side close to the second board body. 
     According to some embodiments, the circuit board includes a first board body and a second board body, the first board body is electrically connected to the second board body by a connecting medium, the second board body is used for electrically connecting an electronic device, the base is disposed on the first board body, and the chord edge of the edge-cut lens sheet and the chord edge portion of the edge-cut lens barrel are located on the side close to the second board body. 
     According to some embodiments, the circuit board includes a first board body and a second board body, the first board body is electrically connected to the second board body by a connecting medium, the second board body is used for electrically connecting an electronic device, the base is disposed on the first board body, and the chord edge of the edge-cut lens sheet is located on the side away from the second board body. 
     According to some embodiments, the circuit board includes a first board body and a second board body, and the first board body and the second board body are electrically connected by a connecting medium, the second board body is used for electrically connecting an electronic device, the base is disposed on the first board body, and the chord edge of the edge-cut lens sheet and the chord edge portion of the edge-cut lens barrel are located on the side away from the second board body. 
     According to some embodiments, the circuit board includes a first board body and a second board body, the first board body is electrically connected to the second board body by a connecting medium, the second board body is used for electrically connecting an electronic device, the base is disposed on the first board body, the edge-cut lens sheet includes two chord edges, one of which is located on the side close to the first board body, and the other of which is located on the side away from the second board body. 
     According to some embodiments, the circuit board includes a first board body and a second board body, the first board body is electrically connected to the second board body by a connecting medium, the second board body is used for electrically connecting an electronic device, the base is disposed on the first board body, the edge-cut lens sheet includes two chord edges, the edge-cut lens barrel includes two chord edge portions, one of the chord edges and one of the chord edge portions are located on the side close to the first board body, and the other of the chord edges and the other of the chord edge portions are located on the side away from the second board body. 
     According to some embodiments, the base includes four side edges, which are a first side edge, a second side edge, a third side edge and a fourth side edge, respectively, the first side edge, the second side edge, the third side edge, and the fourth side edge are adjacently connected to each other to form a light window to provide a light passage for the photosensitive chip, the first side edge is close to the second board body, and the chord edge is located in the direction of the first side edge. 
     According to some embodiments, the width dimension of the first side edge is smaller than that of the second side edge and that of the fourth side edge. 
     According to some embodiments, the base includes four side edges, which are a first side edge, a second side edge, a third side edge and a fourth side edge, respectively, the first side edge, the second side edge, the third side edge, and the fourth side edge are adjacently connected to each other to form a light window to provide a light passage for the photosensitive chip, the first side edge is close to the second board body, the third side edge is opposite to the first side edge, and the chord edge is located in the direction of the third side edge. 
     According to some embodiments, the width dimension of the second side edge is smaller than that of the second side edge and that of the fourth side edge. 
     According to some embodiments, the base includes four side edges, which are a first side edge, a second side edge, a third side edge and a fourth side edge, respectively, the first side edge, the second side edge, the third side edge, and the fourth side edge are sequentially and adjacently connected to each other to form a light window to provide a light passage for the photosensitive chip, the first side edge is close to the second board body, and the third side edge is opposite to the first side edge, and wherein one of the chord edges is located in the direction of the first side edge, and the other of the chord edges is located in the direction of the third side edge. 
     According to some embodiments, the circuit board includes a first board body and a second board body, and the first board body and the second board body are electrically connected by a connecting medium, the second board is used for electrically connecting an electronic device, and the base is disposed on the first board body. 
     According to some embodiments, the circuit board includes at least one electronic element, which is disposed on the first board body, and wherein the base is integrally formed on the first board body and encapsulates at least one of the electronic elements. 
     According to some embodiments, the electronic element is selectively disposed on one side edge, two side edges, three side edges, or four side edges of the four side edges of the base. 
     According to some embodiments, the electronic element is disposed at the position of the second side edge and the fourth side edge. 
     According to some embodiments, the electronic element is disposed at the position of the first side edge and the third side edge. 
     According to some embodiments, the photosensitive chip is electrically connected to the first board body by an electrical connection element, and the base is integrally formed on the first board body, and encapsulates the electrical connection element. 
     According to some embodiments, the electrical connection is selectively disposed on two sides, three sides, or four sides of the four sides of the base. 
     According to some embodiments, the electrical connection element is disposed at the position corresponding to the second side edge and the fourth side edge. 
     According to some embodiments, the electrical connection element is disposed at the position corresponding to the first side edge and the third side edge. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is an overall perspective view of a conventional camera module. 
         FIG.  2    is a perspective view of a camera module in accordance with a first preferred embodiment of the present invention. 
         FIG.  3    is an exploded view of the camera module in accordance with the first preferred embodiment of the present invention. 
         FIG.  4    is an exploded view of a lens in accordance with the first preferred embodiment of the present invention. 
         FIG.  5    is a schematic view of the design principle of the lens in accordance with the first preferred embodiment of the present invention. 
         FIG.  6    is a schematic view of comparison of imaging light in accordance with the first preferred embodiment of the present invention and a conventional lens. 
         FIG.  7    is a schematic view of a first modified embodiment of the lens in accordance with the first preferred embodiment of the present invention. 
         FIG.  8    is a schematic view of a second modified embodiment of the lens in accordance with the first preferred embodiment of the present invention. 
         FIG.  9    is a schematic view of a third modified embodiment of the lens in accordance with the first preferred embodiment of the present invention. 
         FIG.  10    is a schematic view of a fourth modified embodiment of the lens in accordance with the first preferred embodiment of the present invention. 
         FIG.  11    is a schematic view of a fifth modified embodiment of the lens in accordance with the first preferred embodiment of the present invention. 
         FIG.  12    is a schematic view of a partially modified embodiment in accordance with the first preferred embodiment of the present invention. 
         FIG.  13    is a schematic view of a camera module in accordance with a second preferred embodiment of the present invention. 
         FIG.  14    is a schematic view of a camera module in accordance with a third preferred embodiment of the present invention. 
         FIG.  15    is a schematic view of a camera module in accordance with a fourth preferred embodiment of the present invention. 
         FIG.  16    is a schematic view of a camera module in accordance with a fifth preferred embodiment of the present invention. 
         FIG.  17    is a schematic view of a camera module in accordance with a sixth preferred embodiment of the present invention. 
         FIG.  18    is a schematic view of a camera module in accordance with a seventh preferred embodiment of the present invention. 
         FIG.  19    is a schematic view of a camera module in accordance with an eighth preferred embodiment of the present invention. 
         FIG.  20    is a schematic view of a camera module in accordance with a ninth preferred embodiment of the present invention. 
         FIG.  21    is a camera module in accordance with a tenth preferred embodiment of the present invention. 
         FIG.  22    is a camera module in accordance with an eleventh preferred embodiment of the present invention. 
         FIG.  23    is a camera module in accordance with a twelfth preferred embodiment of the present invention. 
         FIG.  24    is a schematic view of a camera module in accordance with a thirteenth preferred embodiment of the present invention. 
         FIGS.  25 A and  25 B  are schematic views of a camera module in accordance with a fourteenth preferred embodiment of the present invention. 
         FIGS.  26 A and  26 B  are schematic views of a camera module and a photosensitive assembly in accordance with a fifteenth preferred embodiment of the present invention. 
         FIGS.  27 A and  27 B  are schematic views of a camera module and a photosensitive assembly in accordance with a sixteenth preferred embodiment of the present invention. 
         FIGS.  28 A and  28 B  are schematic views of a camera module and a photosensitive assembly in accordance with a seventeenth preferred embodiment of the present invention. 
         FIG.  29    is a schematic view of an array camera module in accordance with the fifteenth preferred embodiment of the present invention. 
         FIG.  30    is a schematic view of an array camera module in accordance with the sixteenth preferred embodiment of the present invention. 
         FIG.  31    is a schematic view showing a method of manufacturing the lens in accordance with the above-mentioned preferred embodiments of the present invention. 
         FIG.  32    is a schematic view of an application of the camera module in accordance with the above-mentioned preferred embodiments of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The following description is presented to disclose the invention to enable those skilled in the art to practice the present invention. The preferred embodiments in the following description are by way of example only, and other obvious modifications will occur to those skilled in the art. The basic principles of the present invention as defined in the following description may be applied to other embodiments, modifications, improvements, equivalents, and other embodiments without departing from the spirit and scope of the present invention. 
     It should be understood by those skilled in the art that in the disclosure of the present invention, the orientation or positional relationship indicated by the terms “longitudinal”, “transverse”, “upper”, “lower”, “front”, “back”, “left”, “right”, “upright”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc. is based on the orientation or positional relationship shown in the figures, which is merely for convenience of description of the present invention, and does not indicate or imply that the mentioned apparatus or element must have a particular orientation or be constructed and operated in a particular orientation. Therefore, the above-mentioned terms are not to be construed as limiting the present invention. 
     It should be understood that the term “a” is understood to mean “at least one” or “one or more”, that is, in one embodiment, the number of elements may be one, and in other embodiments, the number of elements may be multiple, and the term “a” cannot be construed as limiting the quantity. 
     With the development of smart electronic devices, the requirements for camera modules are becoming higher and higher. For example, smart phones are developing toward the direction of ultra-thin, large screen, borderless, and high image quality. As can be seen from the foregoing, a camera module is composed of different components. With the development of high speed, the simplification of the components almost reaches the ultimate level, and for further development, in addition to studying possible improvements of each component, the improved matching relationship between the respective components also needs to be considered. According to the present invention, there is provided a lens, which can improve the lens of the camera module to reduce its body shape while ensuring the optical imaging quality. Further, the structures of the lens and the remaining components such as a photosensitive assembly can be matched to each other, so that the overall size of the camera module can be reduced, and its external shape is more consistent, which is more suitable for being mounted in an electronic device. 
     A camera module  100  according to this preferred embodiment of the present invention is as shown in  FIGS.  2  to  6   . The camera module  100  includes a lens  10  and a photosensitive assembly  30 , wherein the lens  10  is in the photosensitive path of the photosensitive assembly  30 , and wherein the lens  10  is an ultra-narrow lens  10 , and may also be referred to as an edge-cut lens  10 . 
     Further, in this embodiment of the present invention, the shape of the lens  10  is matched with the shape of the photosensitive assembly  30 , so that the camera module  100  becomes an ultra-narrow camera module  100 . 
     Specifically, the lens  10  includes at least one edge-cut lens sheet and an edge-cut lens barrel  12 , wherein the edge-cut lens sheet is mounted in the edge-cut lens barrel  12 . At least a portion of a circular edge of the edge-cut lens sheet is removed, thereby reducing the body shape of the edge-cut lens sheet relative to a round shape and providing the advantage of reducing stray light. Further, at least a portion of the circular edge of the edge-cut lens barrel  12  is removed relative to a round lens barrel, so that the overall body shape of the lens  10  is reduced, and the lens  10  and the edge-cut shape are more suitable for matching with other components. The edge-cut of the edge-cut lens sheet is relative to a circular edge of a round lens sheet, that is, at least a portion of the circular edge of the round lens sheet is removed or replaced so that the edge of the round lens sheet is not a complete circle. 
     Further, the lens  10  includes a plurality of lens sheets  11  including at least one edge-cut lens sheet and at least one round lens sheet. The number of edge-cut lens sheets and the position of the edge-cut lens sheets may be selected as desired. The round lens sheet and the edge-cut lens sheet are separately mounted in the edge-cut lens barrel. 
     In this embodiment of the present invention, the lens  10  composed of four lens sheets  11  is schematically explained as an example, and in other embodiments of the present invention, the number of the lens sheets  11  may be another number such as 2, 3, 5 and more. In the lens  10  having different number of lens sheets, the shape of corresponding lens sheets  11  may also be designed according to specific needs, so that at least one of the lens sheets  11  is the edge-cut lens sheet. 
     More specifically, in this embodiment of the present invention and as shown in the accompanying drawings, one of the lens sheets  11  is an edge-cut lens sheet, the remaining three lens sheets are round lens sheets, and the edge-cut lens sheet is at the bottommost. 
     Of course, in other embodiments of the present invention, the number of the edge-cut lens sheets may be another number such as 2, 3 and 4. The position of the edge-cut lens sheet among the four lens sheets  11  may also be selected as desired, and it should be understood by those skilled in the art that the present invention is not limited in this aspect. 
     In this embodiment and the accompanying drawings of the present invention, the four lens sheets  11  of the lens  10  are a first lens sheet  111 , a second lens sheet  112 , a third lens sheet  113 , and a fourth lens sheet  114 , respectively, from an object side to an image side. Also, the body shapes of the four lens sheets  11  increase sequentially from the object side to the image side. That is, the closer the lens sheet  11  of the lens  10  is to the photosensitive assembly  30 , the larger its body shape is. For example, in this embodiment, the fourth lens sheet  114  has the largest body shape. It is worth mentioning that each of the lens sheets  11  is mounted in the edge-cut lens barrel  12 , and in the case where the axial dimension of the edge-cut lens barrel  12  is the same, the overall volume of the lens  10  is decided by the lens sheet  11  having the largest body shape. In this embodiment of the present invention, since the largest lens sheet  11 , namely, the fourth lens sheet  114  is an edge-cut lens sheet, the shape of the edge-cut lens barrel  12  changes with it, and the overall body shape of the lens  10  is reduced. That is, in this embodiment, the first lens sheet  111 , the second lens sheet  112 , the third lens sheet  113  are round lens sheets, and the fourth lens sheet  114  is the edge-cut lens sheet. Of course, in other embodiments of the present invention, other lens sheet  11  may be selected to perform an edge-cut design instead of the lens sheet  11  having the largest body shape, and the present invention is not limited in this aspect. 
     It is worth mentioning that although in this embodiment of the present invention, it is exemplified that the shapes of the four lens sheets  11  increase sequentially, but in other embodiments of the present invention, each of the lens sheets  11  may be arranged in other shape arrangement, for example, an arrangement of the same size, such as the lens sheets having the same size in the middle, the smallest lens sheet at the front end, and the largest lens sheet at the bottom, or the smallest lens sheet at the front end and all the other lens sheets having the same size at the rear end. In the present invention, it is preferred that the bottom lens sheet is the largest. 
     The photosensitive assembly  30  includes a photosensitive chip  31 , wherein the lens sheet  11  of the edge-cut design is designed to be edge-cut according to the shape and size of the photosensitive chip  31 . That is, the design of the edge-cut lens sheet is referenced by the photosensitive chip  31  to ensure the imaging quality of the camera module  100 . In particular, in some embodiments, the design of the edge-cut lens sheet is designed with the shape and size of a photosensitive region of the photosensitive chip  31 . 
     In order to reduce the body shape of the lens  10 , an edge-cut design is performed. Preferably, the body shape of the largest lens sheet  11  in the lens  10 , namely, the body shape of the fourth lens sheet  114  closest to the image side, is reduced according to the size of the photosensitive chip  31 . In particular, in some embodiments, the fourth lens sheet  114  is reduced to a size corresponding to the photosensitive chip  31 . 
     As shown in  FIGS.  5  and  6   , it is worth mentioning that the edge-cut lens sheet of the lens  10  further includes at least one chord edge, that is, the fourth lens sheet  114  includes a chord edge  1141 . The chord edge  1141  of the fourth lens sheet  114  closest to the image side causes a corresponding reduction in the body shape of the fourth lens sheet  114  relative to a complete round lens sheet. That is, the body shape of the fourth lens sheet  114  with the chord edge  1141  is smaller than the body shape of a corresponding round lens sheet. It should be noted that, in a preferred embodiment of the present invention, the chord edge  1141  of the fourth lens sheet  114  is an edge portion formed by a line segment other than the original circular edge in a round cross-sectional view of the fourth lens sheet  114 . That is, the fourth lens sheet  114  of the lens  10  further includes at least one circular edge  1142 . It should be noted herein that the chord edge  1141  of the fourth lens sheet  114  may be not only a straight line segment, but also an arc line segment or any line segment that matches with the photosensitive chip  31  of the photosensitive assembly  30 . According to a complete round lens sheet, the chord edge  1141  may also be understood as an edge portion of the lens sheet  11  that is missing relative to a complete circle. Then, the chord edge  1141  plays a key function in reducing the body shape of the fourth lens sheet  114  and that of the lens  10 . 
     In other words, the edge of the edge-cut lens sheet is composed of at least two line segments having different curvatures adjacently connected to each other so that the edge of the edge-cut lens sheet  11  is not a complete circle. That is, the chord edge  1141  and the circular edge  1142  are adjacently connected to each other to form an edge of the lens sheet  11 , and the chord edge  1141  and the circular edge  1142  have different curvatures. Preferably, the curvature of the chord edge  1141  is 0, that is, a straight line segment, and the curvature of the circular edge  1142  is greater than 0, namely, an arc line segment. 
     Then, a schematic view of the overall lens sheet  11  is as shown in  FIG.  5   . In the present preferred embodiment, in the lens  10  composed of the four lens sheets  11 , the fourth lens sheet  114  closest to the image side has one chord edge  1141  and one circular edges  1142 . The lens sheet  11 , the second lens sheet  112 , and the third lens sheet  113  each have one circular edge  1142 . That is, the first lens sheet  11 , the second lens sheet  112 , and the third lens sheet  113  are round lens sheets, and the fourth lens sheet  114  is an edge-cut lens sheet of which one side is removed. 
     It is worth mentioning that, although in this embodiment of the present invention, the fourth lens sheet  114  composed of one chord edge  1141  and one circular edge  1142  is taken as an example to explain the structural design of the edge-cut lens sheet, in other embodiments of the present invention, the number and shape, layout, and the like of the chord edge  1141  and the circular edge  1142  may be other than those, and the present invention is not limited in this aspect. For example, there may be 2 chord edges  1141  and  2  circular edges  1142 , 3 chord edges  1141  and  3  circular edges  1142 , or 4 chord edges  1141  and  4  circular edges  1142 , etc. The size ratio and positions of the chord edge  1141  and the circular edge  1142  can be set according to different requirements, such as a symmetric arrangement, an asymmetric arrangement, an arrangement according to a predetermined ratio, etc., and the present invention is not limited in this aspect. 
     Further, the lens  10  includes at least one optical path element  13  disposed between two adjacent lens sheets  11  to form a predetermined light passage between the respective lens sheet  11 . By way of example but not limitation, the optical path element  13  can be a gasket, a shim, a coating, or the like. The outer edge shape of the optical path element  13  is consistent with the outer shape of the lens sheet  11  to facilitate blocking of the corresponding edge of the lens sheet  11 . The lens sheet  11  and the optical path elements  13  are each disposed sequentially at intervals inside the edge-cut lens barrel  12 . 
     In this embodiment of the present invention, the number of the lens sheet  11  is 4, and correspondingly, the number of the optical path elements  13  is 3, which are a first optical path element  131 , a second optical path element  132  and a third optical path element  133 , respectively. The first optical path element  131  is disposed between the first lens sheet  111  and the second lens sheet  112 , the outer shape of the first optical path element  131  is consistent with the outer shape of the second lens sheet  112 , the second optical path element  13  is disposed between the second lens sheet  112  and the third lens sheet  113 , and the outer shape of the second optical path element  13  is consistent with the outer shape of the third lens sheet  113 . The third optical path element  13  is disposed between the third lens sheet  113  and the fourth lens sheet  114 , and the outer shape of the third optical path element  13  is consistent with the outer shape of the fourth lens sheet  114 . That is, in this embodiment, the first optical path element  131  and the second optical path element  132  are optical path elements having round outer shapes, and the third optical path element  133  is an edge-cut optical path element, namely, with at least one straight edge and at least one arc edge. 
     Preferably, each of the lens sheets  11  is integrally formed in a process of manufacturing. It should be understood by those skilled in the art that the body shape of the lens sheet  11  may preferably be one-shot molded by injection molding. Moreover, with respect to the round shape of the circular edge  1142 , the time and cost of the chord edge  1141  spent in the processing and design of the mold may be reduced, and the material used is remarkably reduced. According to the design, the lens sheet  11  having a desired shape can be obtained after injection molding by changing the shape of the injection molding space of the mold. Further, the optical path element  13  and the edge-cut lens barrel  12  used for assembly both need to be obtained by injection molding after a mold is customized according to this shape. When assembling, the chord edge  1141  has a certain guiding effect, and the lens sheet  11  may be positioned according to the position of the chord edge  1141 . 
     More specifically, the clear aperture of the lens  10  is decided by the smallest lens sheet  11  and the optical path element  13 . That is, a large portion of the lens sheet  11  closest to the image side as in  FIG.  5    has a less effect on imaging. When the chord edge  1141  is employed, as shown in  FIG.  6   , not only the body shapes of the lens sheet  11  and the lens  10  are reduced, but also the utilization ratio of the lens sheet  11  closest to the image side is improved. In the present preferred embodiment, the fourth lens sheet  114  closest to the image side is taken as an example. Under the action of the optical path element  13 , the fourth lens sheet  114  correspondingly forms an imaging region  1143  and a non-imaging region  1144 , wherein the imaging region  1143  corresponds to the photosensitive chip  31  of the photosensitive assembly  30 , and is a main region where light is received, and wherein the non-imaging region  1144  blocks light from passing through, and a small amount of light passing through it does not perform a photosensitive action. That is, the imaging region  1143  of the lens sheet  11  provides a basis for a main imaging function of the camera module  100 . 
     It is worth mentioning that the function of the optical path element  13  is to block the light of the edge of each of the lens sheets  11  to form a predetermined optical path, and to reduce stray light in the periphery. In an actual production process, the optical path element  13  is not completely opaque and the edge light can not be completely blocked. That is, the non-imaging region  1144  has less light passing through relative to the imaging region  1143  of the lens  1 . The light passing through the non-imaging region  1144  is reflected at other portions of the photosensitive assembly  30 , such as a base  33 , a circuit board  32 , an electrical connection element  313 , etc., as subsequently proposed. The reflected light is received by the photosensitive chip  31 , namely, becoming stray light that affects the image quality of the photosensitive chip  31 . In the present invention, the fourth lens sheet  114  having the chord edge  1141  is employed. As shown in  FIG.  6   , the light intensity of the non-imaging region  1144  of the fourth lens sheet  114  may be weakened, and the formed stray light may also be reduced. The imaging effect of the camera module  100  will be improved. From the viewpoint of the imaging effect, a gradually weakened edge is formed in the imaging circle of the lens  10 . That is, the edge-cut design of the lens sheet  11  causes the light intensity of a portion of the non-imaging region  1144  to be weakened, the influence of stray light is reduced, and the imaging effect is not affected or less affected. The chord edge  1141  of the lens sheet  11  does not affect the imaging region  1143 , and the function of the camera module  100  will also be ensured to be complete. 
     It is worth mentioning that the chord edge  1141  of the lens sheet  11  causes the imaging region  1143  not to lose a portion correspondingly, but correspondingly an edge with gradually weakened brightness and imaging quality appears. In this way, the occupation ratio of the non-imaging region  1144  is reduced, and the effective imaging region  1143  is concentrated to a smaller local portion corresponding to the photosensitive chip  31 . On the premise that no or less change in the image quality is made, the body shape of the lens sheet  11  is reduced, while the flux of light that is irradiated onto the non-imaging region  1144  is reduced, directly reducing the source of stray light. In addition, it is conceivable that in some embodiments, the chord edge  1141  of the lens sheet  11  should be consistent with the periphery of the photosensitive chip  31  of the photosensitive assembly  30 , which greatly reduces the body shaped of the lens sheet  11  and the lens  10 . In the preferred embodiment, it is contemplated that the fourth lens sheet  114  closest to the image side further requires a certain margin when assembling, and thus there is also a certain non-imaging region  1144 . 
     In the present preferred embodiment, the optical path element  13  and the edge-cut lens barrel  12  need to be designed and manufactured according to the body shape of the lens sheet  11 . Preferably, the optical path element  13  and the edge-cut lens barrel  12  are obtained by injection molding after a mold is customized. 
     Specifically, the edge-cut lens barrel  12  further includes at least one chord edge portion  121  and at least one circular edge portion  122 , which correspond to the chord edge  1141  and the circular edge  1142  of the edge-cut lens sheet, respectively. In the present preferred embodiment, the chord edge  1141  is linear, and the chord edge portion  121  is correspondingly linear. Like the manufacture of the chord edge  1141  of the lens sheet  11 , the time and cost of the linear chord edge portion  121  spent in the processing and design of the device and the mold are reduced relative to the circular arc edge. In this way, the lens  10 , the edge-cut lens barrel  12 , a subsequently proposed lens carrying element  20 , and the photosensitive assembly  30  in the present preferred embodiment are all in a straight or square body shape, and are consistent with each other in the design and manufacturing process, so that the production difficulty is decreased, and the corresponding processing yield can be greatly improved. 
     The number and position of the chord edge portion  121  of the edge-cut lens barrel  12  correspond to those of the chord edge  1141  of the edge-cut lens sheet, and when the number of the chord edges  1141  is another number, the position, shape and number of the chord edge portion  121  also change accordingly. 
     More specifically, the chord edge portion  121  of the edge-cut lens barrel  12  is a flat surface, and the circular edge portion  122  of the edge-cut lens barrel  12  is a curved surface. That is, it can be seen from the top view of the edge-cut lens barrel  12  that the top view of the edge-cut lens barrel  12  is a closed curve composed of a circular arc and a straight line, and at this time, the shape of the lens barrel  12  is consistent with the shape of the top view of the fourth lens sheet  114 . It is worth mentioning that since the edge-cut lens barrel  12  has a certain wall thickness, the consistency here does not mean that the sizes are completely identical. Of course, in other embodiments of the present invention, the number, position, and layout of the chord edge portion  121  and the circular edge portion  122  of the edge-cut lens barrel  12  may be other than these, such as 2 chord edge portions  121  and 2 circular edge portions  122 , 3 chord edge portions  121  and 3 circular edge portions  122 , 4 chord edge portions  121  and 4 circular edge portions  122 , or the like. The size ratio and positions of the chord edge portion  121  and the circular edge portion  122  can be set according to different requirements, such as a symmetric arrangement, an asymmetric arrangement, an arrangement according to a predetermined ratio, etc., and the present invention is not limited in this aspect. It is worth mentioning that the chord edge  1141  of the edge-cut lens sheet corresponds to the chord edge portion  121  of the edge-cut lens barrel  12 , the circular edge  1142  of the edge-cut lens sheet corresponds to the circular edge portion  122  of the edge-cut lens barrel  12  so that the relative position of the lens sheet  11  and the edge-cut lens barrel  12  is determined. Therefore, the installation of the lens sheet  11  is more convenient, which is helpful to ensure the consistency of the light path. That is, the edge-cut design of the lens sheet  11  facilitates the positioning of the lens sheet  11 , whereas in the conventional round lens sheet and round lens barrel, there is no defined relative position between the lens sheet and the barrel. 
     It should be particularly noted that the arrangement position of the chord edge portion  121  of the edge-cut lens barrel  12  may be matched with the photosensitive assembly  30 , so that the overall edge of the camera module  100  is reduced, and this advantage will be explained later in detail. 
     The camera module  100  includes a filter element  40  for filtering light passing through the lens  10 . The filter element  40  is, for example, but not limited to, an infrared cut-off filter, a blue glass filter, a wafer-level infrared cut-off filter, a whole transparent sheet, and a visible light filter. The filter element  40  is mounted to a supplementary support member  332  (subsequently proposed) located in the light passage of the photosensitive chip  31 . 
     The camera module  100  further includes a lens carrying element  20 , the lens  10  is mounted on the lens carrying element  20 , and the lens carrying element  20  is mounted on the base  33  so that the lens  10  is in the photosensitive path of the photosensitive chip  31 . For example, the lens carrying element  20  may be implemented as a lens fixing component or a driving component to form a fixed focus camera module  100  or a moving focus camera module  100 , respectively. The driving component is, for example, but not limited to, a piezoelectric motor, or a voice coil motor. When the lens carrying element  20  is implemented as a driving component, the lens carrying element  20  is electrically connected to the photosensitive assembly  30 , such as by a pin, a lead or the like. 
     Further, according to this embodiment of the present invention, the photosensitive assembly  30  further includes a circuit board  32  and a base  33 , the photosensitive chip  31  is electrically connected to the circuit board  32 , and the base  33  is disposed on the circuit board  32  to provide a mounting position and form a back focus required by the camera module  100 . 
     Further, the base  33  is integrally connected to the circuit board  32 . The base  33  includes a base main body  331  and has a light window  333 . The light window  333  provides a light passage for the photosensitive chip  31 . In other words, the photosensitive chip  31  is located inside the light window  333 , and the photosensitive path of the photosensitive chip  31  is consistent with the direction of the light window  333 . 
     The circuit board  32  includes a circuit board main body  321  and at least one electronic element  322 . The photosensitive chip  31  is electrically connected to the circuit board main body  321  to facilitate transmitting photosensitive information to the circuit board  32 . The lens  10  is in the photosensitive path of the photosensitive chip  31 , so that the photosensitive chip  31  receives light and performs light sensing. In particular, in some embodiments, the photosensitive chip  31  may be disposed on the circuit board main body  321  through a surface mount technology (SMT), and be electrically connected to the circuit board main body  321  through at least one electrical connection element  313 . The electrical connection element  313  is, for example, but not limited to, a gold wire, a silver wire, a copper wire, an aluminum wire, a solder, a conductive paste, or the like. 
     The electronic element  322  is disposed on the circuit board main body  321 . By way of example but not limitation, the electronic element  322  is mounted on the circuit board main body  321  by the SMT technology. The electronic element  322  includes, but is not limited to, a resistor, a capacitor, a driving mechanism, or the like. 
     In this embodiment of the present invention, the base  33  is integrally packaged in the circuit board main body  321  and is integrally enclosed around the electronic element  322 , thereby preventing dust and debris from attaching on the photosensor chip  31  to contaminate the electronic element  322  and affect the imaging effect similarly to the conventional camera module  100 . It can be understood that, in another modified embodiment, it is also possible that the electronic element  322  is buried in the circuit board main body  321 , that is, the electronic element  322  may not be exposed outside. It is worth mentioning that although in some embodiments, the electronic element  322  is disposed around the photosensitive chip  31 , the arrangement position of the electronic element  322  can be designed and arranged as desired in different embodiments. For example, it is concentrated on one side or both sides, or disposed on the back surface of the circuit board main body  321  or the like, and may match with the arrangement position of the photosensitive chip  31  and the arrangement position of the electrical connection element  313  and the shape of the supplementary support member  332  subsequently proposed to more rationally utilize the spatial position on the circuit board main body  321  and reduce the size of the camera module  100  as much as possible. 
     The circuit board main body  321  of the circuit board  32  may be a PCB hard board, a PCB soft board, a Rigid-flex board, a ceramic circuit board main body  321  or the like. It is worth mentioning that, in this preferred embodiment of the present invention, since the base main body  331  can completely encapsulate the electronic elements  322 , the electronic elements  322  may not be buried in the circuit board main body  321 , and the board main body  321  is only used to form a conduction line, so that the finally obtained photosensitive assembly  30  can be made smaller in thickness. 
     Further, according to an embodiment of the present invention, the base main body  331  is disposed on the circuit board  32  by integral forming, such as molding, thereby stably fixing the base  33  and the circuit board  32  and reducing additional mounting and fixing processes. For example, the glue bonding process is reduced, the connection is more stable, the height of the glue connection is omitted, and the height of the unit of the camera module  100  is lowered. 
     For example, the base  33  may be disposed on the circuit board  32  by means of integral forming using a mold, such as being molded on a circuit board, which is different from the conventional COB (Chip On Board) manner. By integral forming using a mold, the molding shape and the flatness of the surface can be better controlled, for example, so that the base main body  331  has a better flatness, thereby provides a flat mounting condition for mounted components such as the lens carrying element  20  and the filter element  40 , which is helpful to improve the optical axis consistency of the camera module  100 . By the SMT technology, for example, the electronic elements  322  may each be mounted at an interval from each other on an edge region of the circuit board  32 , e.g. on the outside of the photosensitive chip  31 . It is worth mentioning that each of the electronic elements  322  may be located on the same side or opposite sides of the circuit board  32 . For example, in one specific example, the photosensitive element  31  and each of the electronic elements  322  may be located on the same side of the circuit board  32 , and the photosensitive element  31  is mounted to the chip mounting region of the circuit board  32 . The electronic elements  322  are each mounted at an interval from each other on the edge region of the circuit board  32 . The base main body  331  encapsulates each of the electronic elements  322  after being formed to isolate adjacent electronic elements  322  and isolate the electronic elements  322  from the photosensitive chip  31  by means of the base main body  331 . 
     In the camera module  100  of the present invention, the way each of the electronic elements  322  is encapsulated by the base main body  331  after being formed has many advantages. Firstly, the base main body  331  encapsulates each of the electronic elements  322  so that the mutual interference between the adjacent electronic elements  322  does not occur. Even when the distance between adjacent electronic elements  322  is relatively close, the imaging quality of the camera module  100  can be ensured. In this way, a larger number of the electronic elements  322  can be mounted on the circuit board  32  with a small area, thereby making the structure of camera module  100  more compact, which is advantageous to improve the imaging quality of the camera module  100  on the basis of controlling the dimension of the camera module  100 . Secondly, the base main body  331  encapsulates each of the electronic elements  322 , so that there is no need to reserve a safety distance between the base main body  331  and each of the electronic elements  322 , whether in the horizontal direction or in the height direction, to enable the reduction of the size of the camera module  100 . Thirdly, the base main body  331  encapsulates each of the electronic elements  322  so that no glue is used for connection and leveling between the base main body  331  and the circuit board  32 , which is advantageous to reduce the height dimension of the camera module  100 . Fourthly, the base main body  331  encapsulates each of the electronic elements  322 , and in the process of subsequently transporting and assembling the camera module  100  to form the camera module  100 , the base main body  331  can prevent the electronic element  322  from shaking and falling off, which is advantageous to ensure the structural stability of the camera module  100 . Fifthly, the base main body  331  encapsulates each of the electronic elements  322 , and in the process of subsequently transporting and assembling the camera module  100  to form the camera module  100 , the base main body  331  can prevent each of the electronic elements  322  from being contaminated by contaminants to ensure the image quality of the camera module  100 . Sixthly, the base main body  331  encapsulates the electronic element  322  and then can isolate the electronic element  322  from the air. By this way, the oxidation rate of the metal portion of the electronic element  322  can be slowed down, which is advantageous to improve the environmental stability of the electronic element  322  and the camera module  100 . 
     It is worth mentioning that the base main body  331  is integrally formed on the circuit board main body  321  and encapsulates the electronic element  322  of the circuit board  32  so that the base main body  331  and the circuit board main body  321  have a larger connecting area, and the connection is more stable, and they have a better structural strength by means of integral forming. Therefore, the base main body  331  can firmly and reliably support and fix the components of the camera module  100 , thereby ensuring the yield of the product. 
     It is also worth mentioning that for the unit of high-pixel camera module  100 , the number of the lens sheets  11  of the lens  10  is increasing, for example, up to 4p, up, 6p or more. When the number of the lens sheets  11  of the lens  10  increases, it is necessary to meet the requirements of optical performance at the same time, such as providing sufficient back focus to prevent the filter element  40  from affecting the imaging quality of the camera module  100 , such as the occurrence of black spots, blurred edges and the like on the image. In an embodiment according to the present invention, the filter element  40  is mounted on the integrally formed base  33 , so that the filter element  40  can be provided with a flat mounting condition and the height position at which the filter element  40  is mounted can be effectively controlled through the height of the base  33 . 
     The photosensitive chip  31  has a photosensitive region  311  for performing a photosensitive function, and a non-photosensitive region  312312  for electrically connecting to the circuit board  32 . In this embodiment of the present invention, the non-photosensitive region  312  is electrically connected to the circuit board  32  through the electrical connection element  313 . 
     In this embodiment of the present invention, the photosensitive chip  31  is located inside the base main body  331 , that is, it is not integrally packaged by the base main body  331 . In this embodiment of the present invention, the photosensitive chip  31  needs to be mounted on the circuit board  32 , for example, by glue bonding, so that the photosensitive chip  31  is stably fixed. Thereafter, the photosensitive chip  31  is electrically connected to the circuit board  32  through the electrical connection element  313 , for example, by means of a gold wire. Of course, in other embodiments of the present invention, the way the photosensitive chip  31  is disposed on the circuit board  32  may be performed by other means, such as embedding, sinking, FC (Flip Chip), and the like. It should be understood by those skilled in the art that the connection and mounting manner of the photosensitive chip  31  and the circuit board  32  are not limiting to the present invention. 
     More specifically, in this embodiment of the present invention, the base  33  further includes a supplementary support member  332  that is supplemented to the base main body  331  to form the closed light window  333 . 
     The base main body  331  has a mounting groove  3311  communicating with the light window  333 . The supplementary support member  332  is mounted in the mounting groove  3311  to provide a mounting position for the filter element  40 . 
     Further, the base main body  331  has at least one notch  3312 . The notch  3312  communicates with the optical window  333  and the outside, and the notch  3312  is supplemented by the supplementary support member  332 , thereby forming the light window  333  whose side is closed. 
     In other words, in such an embodiment, the base main body  331  is not a closed structure, but an open structure, and the base main body  331  is closed by supplementation of the supplementary support member  332 . Of course, in other embodiments of the present invention, the base main body  331  may also be a closed structure. 
     In this embodiment of the present invention, the notch  3312  extends downwardly to the circuit board body  321 . The supplementary support member  332  includes at least one support member body  3321  and an extension leg  3322  extending integrally from the support member body  3321  downwardly to the circuit board main body  321  to close the notch  3312 . By way of example but not limitation, the extension legs  3322  are connected to the circuit board body  321  and/or the base main body  331  by adhesive bonding. The support member body  3321  is mounted in the mounting groove  3311 . 
     It is worth mentioning that, in this embodiment of the present invention, the chord edge portion  121  of the edge-cut lens barrel  12  corresponds to the position of the extension leg  3322  of the supplementary support member  332 , so that the edge on the direction in which the extension leg  3322  are located may be narrower. In this embodiment, the electronic element  322  can be concentrated and disposed on a side where the base main body  331  is located, such as a side opposite the extension leg  3322 , so that there is no need to dispose the electronic element  322  on the side on which the extension leg  3322  is located, and it is not necessary to reserve the mounting position of the electronic element  322 . That is, the photosensitive chip  31  is closer to the edge of the circuit board main body  321 , and since the extension leg  3322  may be formed by other means, such as injection molding, the thickness of the extension leg  3322  may be smaller relative to the wall thickness of the base main body  331 , and the chord edge portion  121  of the edge-cut lens barrel  12  is also a narrowing direction, so that the two match with each other, and thus the overall size of the camera module  100  is smaller. 
     Of course, as can be seen from the above, compared to the manner of the conventional COB technology, the base  33  can take many advantages in the integral forming manner, including the advantage of making the size of the base  33  inwardly reduced. That is, in the case of the absence of the supplementary support member  332 , the lens  10  matches with the base  33  having a reduced volume, and the size of the camera module  100  can still be reduced. 
     On the other hand, for the manner of integral forming, the size of the base  33  is reduced, and the lens  10  and/or the lens carrying element  20  need to be mounted to the base  33 . Therefore, the base  33  needs to provide an enough mounting area, and thus the size of the base  33  cannot be too small compared to the conventional larger-sized lens  10 , that is, the miniaturized size of the base  33  is limited by the size of the conventional lens  10 . In the present invention, the edge-cut design of the lens  10  causes the overall size of the lens  10  to be reduced, and the mounting size requirement of the base  33  is reduced, so that the base  33  can be further miniaturized. It can be seen that the lens  10  and the base  33  or the photosensitive assembly  30  match with each other in design, so that the overall size of the camera module  100  can be further miniaturized, while the effect achieved by separately miniaturizing the lens  10  or separately miniaturizing the photosensitive assembly  30  is a bit worse. 
     In this embodiment of the present invention, the base main body  331  has an inner side wall having an inclined angle to facilitate mold manufacturing and reduce stray light reflected to the photosensitive chip  31 . For example, when the side wall is at a vertical angle, the incident angle of light reaching the base main body  331  is large, so that the reflection angle of the light is large, and it is relatively easy to reflect toward the inside, namely, reflecting toward the position of the photosensitive chip  31 . When the inner side wall is inclined, the incident angle of the light is small, and for the light incident in the same direction, the direction of the reflected light is offset from the position of the photosensitive chip  31 , so that the inclined arrangement is helpful to reduce the interference of stray light. The magnitude of the inclination angle can be set as demanded. Of course, in some embodiments, the inner side wall of the base main body  331  may be vertically disposed, that is, the inclination angle is not present. 
     Different modified implementations of the lens  10  in accordance with the first preferred embodiment of the present invention are as shown in  FIGS.  7  to  9   . In these implementations, it is schematically showed that the chord edge  1141  and the circular edge  1142  of the edge-cut lens sheet  11  are changed. 
     For example, in the implementation shown in  FIG.  7   , the edge-cut lens sheet of the lens  10 , namely, the fourth lens sheet  114 , includes two chord edges  1141  and two circular edges  1142 . That is, the edge-cut lens sheet is narrowed at two edge positions relative to a round lens sheet. In particular, the two chord edges  1141  may be symmetrically distributed. 
     Correspondingly, the edge-cut lens barrel  12  includes two chord edge portions  121  and two circular edge portions  122 . In particular, the two chord edge portions  121  are symmetrically disposed. Compared to the conventional round lens barrel, the edge-cut lens barrel  12  is designed to be edge-cut in two directions, so that the two positions of the lens  10  are narrowed. 
     In particular, the curvature of the two chord edges  1141  of the fourth lens sheet  114  is zero, and the curvature of the two circular edges  1142  is greater than 0. That is, the two chord edges  1141  are straight lines, and the two circular edged  1142  are circular arc lines. 
     Further, the outer edges of the chord edge portion  121  and the circular edge portion  122  of the edge-cut lens barrel  12  correspond to the chord edge  1141  and the circular edge  1142 , respectively. 
     In the implementation shown in  FIG.  8   , the edge-cut lens sheet of the lens  10 , namely, the fourth lens sheet  114 , includes three chord edges  1141  and three circular edges  1142 . That is, the edge-cut lens sheet is narrowed at three edge positions relative to a round lens sheet. In particular, the three chord edges  1141  may be symmetrically distributed. 
     Correspondingly, the edge-cut lens barrel  12  includes three chord edge portions  121  and three circular edge portions  122 . In particular, the three chord edge portions  121  are symmetrically disposed. Compared to the conventional round lens barrel, the edge-cut lens barrel  12  is designed to be edge-cut in three directions, so that the three positions of the lens  10  are narrowed. 
     In particular, the curvature of the three chord edges  1141  of the fourth lens sheet  114  is zero, and the curvature of the three circular edges  1142  is greater than 0. That is, the three chord edges  1141  are straight lines, and the three circular edged  1142  are circular arc lines. 
     Further, the outer edges of the chord edge portion  121  and the circular edge portion  122  of the edge-cut lens barrel  12  correspond to the chord edge  1141  and the circular edge  1142 , respectively. 
     In the implementation shown in  FIG.  9   , the edge-cut lens sheet of the lens  10 , namely, the fourth lens sheet  114 , includes four chord edges  1141  and four circular edges  1142 . That is, the edge-cut lens sheet is narrowed at four edge positions relative to a round lens sheet. In particular, the four chord edges  1141  may be symmetrically distributed. 
     Correspondingly, the edge-cut lens barrel  12  includes four chord edge portions  121  and four circular edge portions  122 . In particular, the four chord edge portions  121  are symmetrically disposed. Compared to the conventional round lens barrel, the edge-cut lens barrel  12  is designed to be edge-cut in four directions, so that the four positions of the lens  10  are narrowed. 
     In particular, the curvature of the four chord edges  1141  of the fourth lens sheet  114  is zero, and the curvature of the four circular edges  1142  is greater than 0. That is, the four chord edges  1141  are straight lines, and the four circular edged  1142  are circular arc lines. 
     Further, the outer edges of the chord edge portion  121  and the circular edge portion  122  of the edge-cut lens barrel  12  correspond to the chord edge  1141  and the circular edge  1142 , respectively. 
     Different modified implementations of the lens  10  in accordance with the first preferred embodiment of the present invention are as shown in  FIGS.  10  and  11   . In these implementations, it is schematically showed that the number of the edge-cut lens sheets in the lens  10  may be changed. 
     In the implementation shown in  FIG.  10   , two lens sheets  11  in the lens  10  are edge-cut. As shown in the figure, they are a third lens sheet  113  and a fourth lens sheet  114 , respectively, and the third lens sheet  113  and the fourth lens sheet  114  each include a chord edge  1141  and a circular edge  1142 . Of course, in other embodiments of the present invention, the two edge-cut lens sheets  11  may also be any other two lens sheets  11 . The number of the chord edges  1141  and the number of the circular edges  1142  may also be other numbers, such as the numbers shown in  FIGS.  7  to  9   . Correspondingly, the inner side shape of the edge-cut lens barrel  12  changes according to the shape of the lens sheets  11 . 
     In the implementation shown in  FIG.  11   , three lens sheets  11  in the lens  10  are edge-cut. As shown in the figure, they are a second lens sheet  112 , a third lens sheet  113  and a fourth lens sheet  114 , respectively, and the second lens sheet  112 , the third lens sheet  113  and the fourth lens sheet  114  each include a chord edge  1141  and a circular edge  1142 . Of course, in other embodiments of the present invention, the three edge-cut lens sheets  11  may also be any other three lens sheets  11 . The number of the chord edges  1141  and the number of the circular edges  1142  may also be other numbers, such as the numbers shown in  FIGS.  7  to  9   . Correspondingly, the inner side shape of the edge-cut lens barrel  12  changes according to the shape of each of the lens sheets  11 . 
     In the first preferred embodiment described above, the lens  10  may be attached to the lens carrying element  20  by adhesive bonding, and in particular, the edge-cut lens barrel  12  is externally flat without a threaded structure. As shown in  FIG.  12   , in another modified implementation of the camera module  100  according to the first preferred embodiment of the present invention, the edge-cut lens barrel  12  externally has a thread, that is, the lens  10  may be applied to the lens carrying element  20  having a threaded structure after being edge-cut. 
     A camera module  100  according to the second preferred embodiment of the present invention is as shown in  FIG.  13   . In this embodiment, the electronic element  322  is disposed at the bottom of the circuit board body  321 . Therefore, it is not necessary to reserve the installation space of the electronic element  322  on the top of the circuit board main body  321 , so that the design of the base main body  331  and the supplementary support member  332  can be more flexible, the requirements of the circuit board main body  321  are continuously reduced, and the lens  10  can be designed to be edge-cut accordingly, so that the overall size of the camera module  100  is reduced. 
     Further, in some implementations, it is showed that the base main body  331  integrally packages the electronic element  322  located on the back surface of the circuit board body  321  so that the illustrated electronic element  322  is encapsulated. 
     A camera module  100  according to the third preferred embodiment of the present invention is as shown in  FIG.  14   . In this way, the electronic element  322  is disposed at the back surface of the circuit board body  321 . The base  33  is mounted to the circuit board main body  321  by adhesive bonding, that is, a conventional base can be applied to such an embodiment. However, since it is not necessary to reserve the spatial position of the electronic element  322 , the size of the base  33  can be reduced, and the lens  10  can be designed to be edge-cut, so that the size of the camera module  100  is reduced. 
     Further, in some embodiments, a molded base may be provided to encapsulate the electronic element  322 . That is, the electronic element located on the back surface of the circuit board main body  321  is packaged by means of integral forming, thereby making the assembly thereof more stable. 
     A camera module  100  according to the fourth preferred embodiment of the present invention is shown in  FIG.  15   . In this way, the base  33  includes a base main body  331  and has a light window  333 . The base main body  331  is integrally formed on the circuit board  32  to form the light window  333 . In this embodiment, the base main body  331  is a closed structure, that is, the base main body  331  does not have a notch  3312 . The base main body  331  has a mounting groove  3311 , and the filter element  40  is mounted in the mounting groove  3311 . 
     A camera module  100  according to the fifth preferred embodiment of the present invention is shown in  FIG.  16   . In this way, the base  33  includes a base main body  331  and has a supplementary support member  332 . The base main body  331  is integrally formed on the circuit board  32  to form the light window  333 . In this embodiment, the base main body  331  is a closed structure, that is, the base main body  331  does not have a notch  3312 . The base main body  331  has a mounting groove  3311  in which the supplementary support member  332  is mounted, and the filter element  40  is mounted to the supplementary base  33 . Unlike the first preferred embodiment, in this way, the supplementary support member  332  does not have the extension leg  3322 , that is, the supplementary support member  332  is not directly connected to the circuit board  32 . 
     Further, the supplementary support member  332  is sunk in the light window  333  so that the filter element  40  is closer to the photosensitive chip  31 , and the back focus of the camera module  100  is reduced. 
     A schematic view of a camera module  100  in accordance with the sixth preferred embodiment of the present invention is as shown in  FIG.  17   . Unlike the first embodiment, the circuit board main body  321  has a sinking region  3211 , and the photosensitive chip  31  is sunkenly disposed in the sinking region  3215 , to reduce the relative height of the photosensitive chip  31  and the circuit board main body  321 . 
     The sinking region  3215  may be implemented as a groove or a through hole. That is, the spaces on both sides of the circuit board main body  321  may be made to communicate or not to communicate. When the sinking region  3215  is a groove, the photosensitive chip  31  is disposed at the bottom of the groove, and is electrically connected to the circuit board main body  321  through the electrical connection element  313 . The outer end of the electrical connection element  313  may be electrically connected to the bottom of the groove or may be electrically connected to the outer side of the sinking region  3215 , and the present invention is not limited in this aspect. Further, the top surface of the photosensitive chip  31  may be consistent with the top surface of the circuit board main body  321  or higher than the top surface of the circuit board main body  321  or lower than the top surface of the circuit board main body  321 . That is, the present invention does not limit the sinking depth. 
     Further, in the figure of this embodiment of the present invention, the sinking region  3215  is a through hole, that is, both sides of the circuit board  32  communicate through the through hole. The circuit board  32  of the camera module  100  includes a bottom plate  323  stacked and disposed on the bottom of the circuit board main body  321  to support the photosensitive chip  31  and enhance the structural strength of the circuit board main body  321 . That is, the photosensitive chip  31  is sunk and disposed in the sinking region  3215 , and is supported by the bottom plate  323 . The photosensitive chip  31  is electrically connected to the circuit board main body  321  through the electrical connection element  313 . 
     In some embodiments, the bottom plate  323  may be a metal plate disposed on the bottom of the circuit board main body  321  by attaching. 
     A camera module  100  according to the seventh preferred embodiment of the present invention is shown in  FIG.  18   . 
     The base  33  of the photosensitive assembly  30  of the camera module  100  integrally packages at least a portion of the non-photosensitive region  312  of the photosensitive chip  31 . In other words, the base  33  packages the circuit board  32  and the photosensitive chip  31  by means of integral forming so that the photosensitive chip  31  is stably fixed and the formable region of the base  33  is increased. The base  33  encapsulates the electrical connection element  313 . 
     It is worth mentioning that, compared to the above manner in the first preferred embodiment described above that the base  33  is only formed on the circuit board, the manner of molding on the photosensitive chip allows the range in which the base  33  can be integrally formed to be extended to the non-photosensitive region  312  of the photosensitive chip  31 , thereby increasing the connection area of the bottom portion of the base  33  without affecting the normal photosensitive operation of the photosensitive element  31 . As a result, the base  33  can be more stably connected to the circuit board  32  and the photosensitive element  31 , and the top portion can provide a larger mountable area for other components, such as the lens  10 , the lens carrying element  20 , etc. Also, the electrical connection element  313  is encapsulated by the base  33 , thereby avoiding external interference with the electrical connection element  313 , and preventing the electrical connection element  313  from oxidizing or being dust contaminated to affect the imaging quality of the camera module  100 . 
     In this implementation, the base  33  includes a support element  334  for supporting the mold in the manufacturing process to prevent the circuit board or the photosensitive element  31  from being damaged. That is, in the manufacturing process, the manufacturing mold can be abutted against the support element  334 , so that the mold does not directly contact the circuit board or the photosensitive element  31 , and the molding material is prevented from overflowing inwardly. 
     Further, the support element  334  may have a ring structure, which is consistent with the shape of the base main body  331 . The support element  334  has elasticity, and is, for example, but not limited to, a glue coating or a rubber pad. 
     A camera module  100  according to the eighth preferred embodiment of the present invention is shown in  FIG.  19   . 
     In this embodiment, the circuit board main body  321  has a sinking region  3215 , and the photosensitive chip  31  is sunkenly disposed in the sinking region  3215 , to reduce the relative height of the photosensitive chip  31  and the circuit board main body  321 . 
     The sinking region  3215  may be implemented as a groove or a through hole. That is, both sides of the circuit board main body  321  may be made to communicate or not to communicate. When the sinking region  3215  is a groove, the photosensitive chip  31  is disposed at the bottom of the groove, and is electrically connected to the circuit board main body  321  through the electrical connection element  313 . The outer end of the electrical connection element  313  may be electrically connected to the bottom of the groove or may be electrically connected to the outer side of the sinking region  3215 , and the present invention is not limited in this aspect. Further, the top surface of the photosensitive chip  31  may be consistent with the top surface of the circuit board main body  321  or lower than the top surface of the circuit board main body  321  or higher than the top surface of the circuit board main body  321 . That is, the present invention does not limit the sinking depth. 
     Further, in the figure of this embodiment of the present invention, the sinking region  3215  is a through hole, that is, both sides of the circuit board  32  communicate through the through hole. 
     The base  33  of the photosensitive assembly  30  of the camera module  100  integrally packages at least a portion of the non-photosensitive region  312  of the photosensitive chip  31 . In other words, the base  33  packages the circuit board and the photosensitive chip  31  by means of integral forming so that the photosensitive chip  31  is stably fixed and the formable region of the base  33  is increased. The base  33  encapsulates the electrical connection element  313 . 
     It is worth mentioning that, compared to the above manner in the first preferred embodiment described above that the base  33  is only formed on the circuit board, the manner of molding on the photosensitive chip allows the range in which the base  33  can be integrally formed to be extended to the non-photosensitive region  312  of the photosensitive chip  31 , thereby increasing the connection area of the bottom portion of the base  33  without affecting the normal photosensitive operation of the photosensitive element  31 . As a result, the base  33  can be more stably connected to the circuit board  32  and the photosensitive element  31 , and the top portion can provide a larger mountable area for other components, such as the lens  10 , the lens carrying element  20 , etc. Also, the electrical connection element  313  is encapsulated by the base  33 , thereby avoiding external interference with the electrical connection element  313 , and preventing the electrical connection element  313  from oxidizing or being dust contaminated to affect the imaging quality of the camera module  100 . 
     In this embodiment, the photosensitive chip  31  and the electrical connection element  313  are integrally packaged by the base  33 , so that the photosensitive chip  31  can be fixed by the base  33 . A bottom plate  323  may be disposed at the bottom of the circuit board  32 , or the bottom plate  323  may not be disposed. 
     A schematic view of a camera module  100  in accordance with the ninth preferred embodiment of the present invention is as shown in  FIG.  20   . 
     The filter element  40  is correspondingly disposed on the photosensitive assembly  30 , and the base  33  combines the photosensitive assembly  30  and the filter element  40  into one body after being formed to form an integral structure. That is, unlike the above embodiment, the filter element  40  is disposed on the base  33  by means of integral forming, it can also be disposed on the base  33  by a different manner, such as an adhesive bonding manner. 
     The filter element  40  is correspondingly disposed on the photosensitive assembly  30  to form at least one sealed space between the filter element  40  and the photosensitive assembly  30 , wherein the photosensitive region of the photosensitive chip  31  of the photosensitive assembly  30  is located in the sealed space, respectively, so that the molding material for forming the base  33  does not enter the sealed space in a process of performing molding to form the base  33 , and thus the base  33  is formed only outside the sealed space, and wherein the base  33  encapsulates a portion of the circuit board  32  and a portion of the filter element  40  after being formed, and the base  33  has the light window  333 , the photosensitive region of the photosensitive chip  31  corresponding to the light window  333 , so that the light window  333  provides a light passage for the lens  10  and the photosensitive chip  31 . 
       FIG.  21    is a camera module  100  in accordance with the tenth preferred embodiment of the present invention. 
     In this embodiment of the present invention, the photosensitive assembly  30  includes a blocking lens  14  disposed above the photosensitive chip  31 , and the blocking lens  14  is integrally packaged by the base  33 . Light reflected by an object enters the interior of the camera module  100  from the lens  10  and the blocking lens  14 , and is subsequently received and photoelectrically converted by the photosensitive element  31  to obtain an image associated with the object. The arrangement of the blocking lens  14  can reduce the optical TTL (the distance from the plane of the lens  10  at the clear aperture of the lens  10  to the photosensitive plane of the chip), and thus further reduce the size of the camera module  100  without affecting its optical performance, meeting the demand of the electronic device for mounting the small-sized camera module  100 . At the same time, the arrangement of the blocking lens  14  can also reduce stain sensitivity. For example, in one embodiment, stain sensitivity of 50% can be reduced. 
     In this preferred embodiment of the present invention, preferably, the blocking lens  14  is implemented as a lens sheet with the thermosetting property. That is, the blocking lens  14  is implemented as a thermoset lens sheet, so that the blocking lens  14  can withstand the ambient temperature in a molding process when the molding process is performed. For example, it can withstand a molding ambient temperature of 180° C. in a molding process of an embodiment. That is, the high temperature resistant and thermally hardened processed blocking lens  14  is connected to the support element  334  before the molding process and is placed in a mold with the circuit board  32  and the photosensitive chip  31 . A cured molding material of fluid is molded around the outer surfaces of the support element  334  and the blocking lens  14  to integrally form the base  33 , so that the base  33  can be integrally formed on the circuit board  32 . That is, the base  33 , the circuit board  32  and the blocking lens  14  form an integral structure. It should be understood by those skilled in the art that the blocking lens  14  of the present invention may be not only a thermoset lens sheet, but may also be a lens sheet  11  of other properties, and the present invention is not limited to this. 
     Further, the blocking lens  14  includes a lens main body  141  and a lens peripheral edge  142  disposed around the lens main body  141 . Since the blocking lens  14  is a precision optical element, the edge of the lens main body  141  is relatively thin. The lens peripheral edge  142  disposed at the edge of the lens main body  141  and integrally connected is a thickened bracket design, and is capable of carrying the lens main body  141  to enable the lens main body  141  to be integrally molded to the base  33  in a mold while the optical performance of the lens main body  141  is not affected. That is, before the base  33  is formed, the lens peripheral edge  142  of the blocking lens  14  is disposed in the non-photosensitive region  312  of the photosensitive chip  31 , and the lens main body  141  of the blocking lens  14  is disposed in the photosensitive path of the photosensitive chip  31  of the photosensitive assembly  30 ; and after the base  33  is formed, the base  33  encapsulates the circuit board  32 , at least a portion of the non-photosensitive region  312  of the photosensitive chip  31 , at least a portion of the support element  334 , and the lens peripheral edge  142  of the blocking lens  14  to form the photosensitive assembly  30 . 
     It is worth mentioning that the blocking lens  14  can also be the edge-cut lens sheet, thereby reducing the edge portion of the lens sheet  11  and reducing the area of the blocking lens  14 , so that the shape of the blocking lens  14  corresponds to the shape of the lens  10 . 
       FIG.  22    is a camera module  100  in accordance with the eleventh preferred embodiment of the present invention. 
     The circuit board main body  321  includes a first board body  3211  and a second board body  3212 , and the first board body  3211  and the second board body  3212  are fixedly connected by a connecting medium  3213 . The first board body  3211  may be a hard board, the second board body  3212  may be a soft board, and the connecting medium  3213  may be an ACF conductive adhesive. The second board body  3212  may further include an interface terminal, such as a connector, to facilitate electrical connection to an electronic device. 
     In some embodiments, the base main body  331  is integrally formed on the first board body  3211 , and the second board body  3212  is lap joined at one end of the first board body  3211 . In the manufacturing process, the circuit board main body  321  may be first built by the first board body  3211  and the second board body  3212 , and then integrally formed, or may be integrally formed on the first board body  3211 , and then the second board body  3212  is electrically connected to the first board body  3211 . For example, it is fixed to the first board body  3211  by the ACF conductive adhesive. 
     It is worth mentioning that although the second board body  3212  is connected to the upper portion of the first board body  3211  through the connecting medium  3213  as shown in  FIG.  22   , in other embodiments of the present invention, the second board body  3212  is connected to the bottom of the first board body  3211  through the connecting medium  3213 , and the present invention is not limited in this aspect. 
       FIG.  23    is a camera module  100  in accordance with the twelfth preferred embodiment of the present invention. 
     In this embodiment, the circuit board main body  321  is provided with a flip-chip groove  3214 , and the photosensitive chip  31  is mounted in the flip-chip groove  3214  in a flip-chip manner. That is, the photosensitive chip  31  is mounted on the board main body  321  by means of FC (Flip Chip). The flip-chip groove  3214  is opposite to the lens  10 . 
     That is, the photosensitive chip  31  is mounted from below the circuit board main body  321  toward the circuit board main body  321  during the mounting process, and the photosensitive region of the photosensitive chip  31  performs a light sensing function through the flip-chip groove  3214 . 
       FIG.  24    is a schematic view of a camera module in accordance with the fourteenth preferred embodiment of the present invention. 
     In this embodiment, the lens carrying element  20  is integrally connected to the base  33 , and the lens  10  is adapted to be mounted to the lens carrying element  20  to form a fixed focus camera module. 
     Further, the lens carrying element  20  extends at least partially integrally upward from the base main body  331  to form a closed lens limiting space. That is, in this way, the base  33  includes the lens carrying element  20  to provide a limit and installation space for the lens  10 . 
     In the manufacturing process, the base  33  with the lens carrying element  20  may be integrally formed on the circuit board  32  by using a mold. The lens carrying element may also be formed on the base main body by means of a secondary molding after the base main body is formed, and the present invention is not limited in this aspect. 
       FIGS.  25 A and  25 B  are schematic views of a camera module  100  in accordance with the fifteenth preferred embodiment of the present invention. 
     In this embodiment, the lens  10  includes at least two lens units, and the optical path of each of the lens units coincides with each other. Further, at least one lens unit of the respective lens units is an edge-cut lens unit. That is, at least one of the lens units includes at least one edge-cut lens sheet. 
     Specifically, in this implementation, the lens  10  includes two lens units, which are a first lens unit  110  and a second lens unit  120 , respectively, and the first lens unit  110  and the second lens unit  120  are stacked and disposed from bottom to top. The first lens unit  110  is an edge-cut lens. The first lens unit  110  and the second lens unit  120  are independent of each other. That is, in the process of manufacturing, the first lens unit  110  and the second lens unit  120  may each be formed separately, and then two lens units are assembled, such as by glue bonding. 
     Further, the first lens unit  110  includes four lens sheets  11 , which are a first lens sheet  111 , a second lens sheet  112 , a third lens sheet  113 , and a fourth lens sheet  114 , wherein the fourth lens sheet  114  is an edge-cut lens sheet. The first lens unit  110  includes an edge-cut lens barrel  12 , and each of the lens sheets  11  is separately mounted in the lens barrel  12 . 
     It is worth mentioning that in the manufacturing process of the lens, the optical axis consistency and the relative angular relationship between the lens sheets are some important factors affecting the image quality of the lens. When assembling each of the lens sheets and the lens, it is necessary to adjust the relative position, especially the position of the last lens sheet. The last lens sheet is typically assembled by pre-assembling the lens sheet and then adjusting the orientation of the lens sheet, such as rotating by a predetermined angle, so that the lens has better imaging. In this embodiment, the adjustment of the relative position of the lens sheet may be achieved by adjusting the second lens unit  120 . That is, when the lens  10  is assembled, the first lens unit  110  and the second lens unit  120  are firstly assembled, next, the first lens unit  110  and the second lens unit  120  are pre-assembled, and then the second lens unit  120  or the first lens unit  110  is rotated to adjust the relative position of the first lens unit  110  and the second lens unit  120 , so that the imaging quality of the lens  10  reaches the requirements of imaging quality or obtains a better imaging effect, that is, the purpose of adjusting the relative positional relationship between the lens sheets is achieved. 
       FIGS.  26 A and  26 B  are schematic views of a camera module and a photosensitive assembly in accordance with a fifteenth preferred embodiment of the present invention. In this embodiment of the present invention, the circuit board main body  321  includes a first board body  3211  and a second board body  3212 , and the second board body  3212  is electrically connected to the first board body  3211 . The first board body  3211  may be a hard plate, and the second board body  3212  may be a soft plate. For example, the second board body  3212  may be electrically connected to the first board body  3211  in a press-fit manner, or may be electrically connected to the first board body  3211  through a conductive medium. The second board body  3212  may further include an interface terminal, such as a connector for electrically connecting to an electronic device. That is, the second board body  3212  is an electrical connection terminal for electrically connecting to other devices, such as an electronic device. 
     Further, the chord edge  1141  of the edge-cut lens sheet of the lens  10  and the chord edge portion  121  of the edge-cut lens barrel  12  are close to one side of the second board body  3212 . Specifically, the base main body  331  includes four side edges, which are a first side edge  33101 , a second side edge  33102 , a third side edge  33103 , and a fourth side edge  33104 , respectively. The first side edge  33101 , the second side edge  33102 , the third side edge  33103 , and the fourth side edge  33104  are sequentially and adjacently connected to each other in a closed manner to form the light window  333 . The second side edge  33102  and the fourth side edge  33104  are located on two sides of the first side edge  33101 , and the third side edge  33103  is opposite to the first side edge  33101 . 
     A support member  3320  is mounted to the base main body  331 , and the filter element  40  is mounted to the support member  3320  so that the filter element  40  is in the photosensitive path of the photosensitive chip  31 . 
     In this embodiment of the present invention, the first side edge  33101  is adjacent to the second board body  3212 , and the chord edge  1141  of the edge-cut lens sheet of the lens  10  is located at the direction of the first side edge  33101 . That is, the chord edge  1141  of the edge-cut lens sheet and the chord edge portion  121  of the edge-cut lens barrel  12  are close to the interface terminal of the camera module  100 . 
     Further, in this embodiment of The present invention, the electronic element  332  and the electrical connection element  313  are disposed on the second side edge  33102  and the fourth side edge  33104  of the base, making full use of the position of the circuit board main body  321  corresponding to the second side edge  33102  and the fourth side edge  33104 . That is, the electronic element  332  and the electrical connection element  313  are disposed at positions of the first board body corresponding to the second side edge  33102  and the fourth side edge  33104 . In particular, the electronic element  332  and the electrical connection element  313  are disposed in a direction perpendicular to the chord edge  1141  of the edge-cut lens sheet so that the size of the direction where the chord edge  1141  is located is maximally reduced. It is worth mentioning that, although in this embodiment of the present invention, the electrical connection element  313  and the electronic element  332  are disposed on opposite sides, in other embodiments of the present invention, the electrical connection element  313  and the electronic element  332  may be disposed on any two sides, three sides or four sides of the photosensitive chip  31  as desired. That is, the electronic element  332  and/or the electrical connection element  313  may be selectively disposed on one side edge, two side edges, and three side edges of the first side edge  33101 , the second side edge  33102 , the third side edge  33103 , and the fourth side edge  33104  of the base main body  331 , and the present invention is not limited in this aspect. 
     It is worth mentioning that, in some embodiments, the chord edge  1141  is located in the direction of the first side edge  33101 , and the electronic element  332  is not disposed at a position corresponding to the first side edge  33101 , so that the requirement of the width dimension of the first side edge  33101  is reduced, thereby increasing the possibility that the volume of the camera module is further reduced. That is, the arrangement positions of the electronic element  332  and the electrical connection element  313  may be adjusted according to the direction in which the chord edge  1141  is disposed. 
     Further, in this embodiment of the present invention, the width dimension of the first side edge  33101  is small, which is adapted to the edge-cut design of the lens  10 , namely, adapting to the chord edge  1141  of the edge-cut lens sheet and the chord edge portion  121  of the edge-cut lens barrel  12 . In particular, the width dimension W 1  of the first side edge  33101  is smaller than the width dimensions W 2 , W 4  of the second side edge  33102  and the fourth side edge  33104 . 
       FIGS.  27 A and  27 B  are schematic views of a camera module and a photosensitive assembly in accordance with a sixteenth preferred embodiment of the present invention. Unlike the fifteenth embodiment, in this embodiment of the present invention, the third side edge  33103  is away from the second board body  3212 , the chord edge  1141  of the edge-cut lens sheet of the lens  10  and the chord edge portion  121  of the edge-cut lens barrel  12  are located in the direction of the third side  33101 . That is, the chord edge  1141  of the edge-cut lens sheet and the chord edge portion  121  of the edge-cut lens barrel  12  are away from the electrical connection end of the camera module  100 . That is, the chord edge  1141  of the edge-cut lens sheet is located on the side opposite to the second board body  3212 . 
     Further, in this embodiment of the present invention, the width dimension of the third side edge  33103  is small, which is adapted to the edge-cut design of the lens  10 , namely, adapting to the chord edge  1141  of the edge-cut lens sheet and the chord edge portion  121  of the edge-cut lens barrel  12 . In particular, the width dimension W 3  of the third side edge  33101  is smaller than the width dimensions W 2 , W 4  of the second side edge  33102  and the fourth side edge  33104 . 
       FIGS.  28 A and  28 B  are schematic views of a camera module and a photosensitive assembly in accordance with a seventeenth preferred embodiment of the present invention. In this embodiment of the present invention, the edge-cut lens sheet includes two chord edges  1141 , and the edge-cut lens barrel  12  includes two chord edge portions  121 . One of the chord edges  1141  of the edge-cut lens sheet and one of the chord edge portions  121  of the edge-cut lens barrel  12  are located on the side close to the second board body  3212 . The other of the chord edges  1141  of the edge-cut lens sheet and the other of the chord edge portions  121  of the edge-cut lens barrel  12  are located on the side away from the second board body  3212 . 
     Further, one of the chord edges  1141  of the edge-cut lens sheet and one of the chord edge portions  121  of the edge-cut lens barrel  12  are located at the first side edge  33101  of the base main body  331 . The other of the chord edges  1141  of the edge-cut lens sheet and the other of the chord edge portions  121  of the edge-cut lens barrel  12  are located at the third side edge  33103  of the base main body  331 . 
       FIG.  29    is a schematic view of an array camera module in accordance with the fifteenth preferred embodiment of the present invention. 
     In this implementation, the array camera module includes a plurality of the camera modules  100  so that the modules cooperate with each other. In particular, each of the camera modules  100  is separately disposed, that is, the circuit board  32  and the base  33  of each of the camera modules  100  may not be connected. 
     Further, each of the camera modules  100  may be assembled by an outer frame  50 . 
     Further, in some embodiments, the array camera module may be formed by the camera module  100  of the present invention and a conventional camera module, that is, the array camera module includes at least one camera module  100 . 
       FIG.  30    is a schematic view of an array camera module in accordance with the sixteenth preferred embodiment of the present invention. 
     In this implementation, the array camera module  100  includes a plurality of camera modules  100  so that the modules cooperate with each other. In particular, each of the camera modules  100  is disposed in an interconnected manner, that is, the circuit board  32  and the base  33  of each of the camera modules  100  may be connected to each other to form an integral structure. 
     Further, in some embodiments, the array camera module may be formed by a combination of the camera module  100  of the present invention and a conventional camera module, that is, the array camera module includes at least one camera module  100 . At least one of the camera modules  100  may be interconnected with a conventional camera module to form the array camera module. 
       FIG.  31    is a schematic view showing a method of manufacturing the lens  10  in accordance with the above-mentioned preferred embodiments of the present invention. The present invention provides a method  1000  of manufacturing a lens  10 , the method comprising steps of: 
       1101 : injection molding at least one edge-cut lens sheet; 
       1102 : injection molding an edge-cut lens barrel  12 ; and 
       1103 : mounting the edge-cut lens sheet to the edge-cut lens barrel  12  at a predetermined position. 
       FIG.  32    is a schematic view of an application of the camera module  100  in accordance with the above-mentioned preferred embodiments of the present invention. 
     The present invention further provides an electronic device  300 , wherein the electronic device includes an electronic device body  200  and at least one camera module  100 , and wherein the camera module  100  is disposed on the electronic device body  200  for acquiring an image. It is worth mentioning that the type of the electronic device body  200  is not limited. For example, the electronic device body  200  may be a smart phone, a wearable device, a tablet computer, a notebook computer, an e-book, a personal digital assistant, a camera, a monitor apparatus or any electronic device that can be equipped with the camera module  100 . It should be understood by those skilled in the art that although the electronic device body  200  is implemented as a smart phone in  FIG.  32   , it does not constitute a limitation to the content and scope of the present invention. 
     It should be understood by those skilled in the art that the embodiments of the present invention described in the above description and the accompanying drawings are only exemplary and not limiting to the present invention. The objects of the present invention have been achieved completely and efficiently. The function and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may be varied or modified without departing from the principles.