CN110958365A - Multi-group lens, camera module, electronic equipment and assembling method - Google Patents

Abstract

The invention provides a multi-group lens, a camera module, electronic equipment and an assembling method, wherein the multi-group lens comprises a plurality of lenses and at least two bearing parts, a first bearing part and a second bearing part, wherein at least one lens is arranged on the first bearing part to form an independent first group lens, at least one lens is arranged on the second bearing part to form an independent second group lens, and at least one lens is a reduced edge lens.

Description

Multi-group lens, camera module, electronic equipment and assembling method

Technical Field

The present invention relates to the field of optical technologies, and in particular, to a multi-group lens, a camera module, an electronic device, and an assembling method.

Background

Mobile electronic devices are increasingly used in both daily life and work, and related technologies are rapidly developing. Mobile electronic devices are beginning to carry more and more functionality to meet the needs of users, and this trend is continuing.

The camera module is an important part of the mobile electronic equipment, can acquire video or image information, and is very widely applied. An important performance of the camera module is the camera quality, and in order to meet the requirements of users on the camera quality, the existing camera module is in a trend of irreversible rotation due to high pixels, small size and large aperture. For the mobile electronic device, the larger the size of the camera module is, the more installation space needs to be provided for the camera module, and obviously, the more installation space needs to be reserved for the mobile electronic device, the more adverse to the expansion of the functions of the mobile electronic device itself will be, because the space that can be provided will become smaller.

The camera module mainly comprises a lens component and a photosensitive component, wherein the lens component is used for receiving light, and the photosensitive component is used for photosensitive to perform photoelectric conversion. The size of the current lens assembly and the size of the light sensing assembly have approached a limit in the current process, and further size reduction is very demanding and difficult to process, and may also require unnecessary cost.

The imaging quality of the camera module is related to a plurality of components, such as the performance of a photosensitive element of the photosensitive assembly, the number of lenses of the lens, and the achievable process precision during manufacturing, so that the development of the camera module needs to be matched in a plurality of aspects. Therefore, the problem to be solved is to reduce the size of the camera module on the premise of ensuring the camera quality of the camera module.

Disclosure of Invention

An object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the camera module can ensure the imaging quality while reducing the size.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the size of the multi-group lens of the camera module can be reduced.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof,

wherein the multi-group lens includes at least one lens and at least one barrel, wherein a mass of the lens can be reduced, so that a size of the barrel corresponding to the lens can be reduced.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic apparatus and an assembling method, in which the size of the lens barrel can be reduced, so that the overall size of the lens and the lens barrel can be reduced.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the lens can be designed from a circular or elliptical configuration to a non-circular configuration to reduce the size of the lens.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the multi-group lens includes a first group lens and a second group lens, and the first group lens and the second group lens can be adjusted relatively, so as to solve the problem that the non-circular lens cannot be adjusted relatively with the corresponding lens barrel.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the relative rotation angles between the non-circular lens and the non-circular lens of different lens barrels can be adjusted to achieve a better performance.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the relative position between the non-circular lens and the circular lens can be adjusted.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the non-circular lens and the non-circular lens can be adjusted simultaneously.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the non-circular lens and the circular lens can be adjusted simultaneously.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the non-circular lens can be independently adjusted.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the multi-group lens can be assembled into a whole after adjustment, and then assembled with a photosensitive assembly into a complete camera module.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the first group lens, the second group lens and the photosensitive element are adjusted together and then assembled into a complete camera module.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the non-circular lens can be used with a conventional lens.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein each lens of the camera module can be replaced by a non-circular lens.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the non-circular lens can be located on the first group lens or the second group lens.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device thereof and an assembling method thereof, wherein the camera module occupies a smaller space of the electronic device after the size of the camera module is reduced.

Another objective of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein at least one lens in the camera module, which is located at the front, is a reduced edge lens, which is beneficial to reducing the screen ratio of the camera module relative to the electronic device.

Another object of the present invention is to provide a multi-group lens, a camera module, an electronic device and an assembling method thereof, wherein the camera module is particularly suitable for being assembled to an electronic device with a display screen.

According to an aspect of the present invention, there is provided a multi-group lens comprising a plurality of lenses and at least two carrying members, a first carrying member and a second carrying member, wherein at least one of the lenses is mounted on the first carrying member to form an independent first group lens, wherein at least one of the lenses is mounted on the second carrying member to form an independent second group lens, wherein at least one of the lenses is a reduction edge lens.

According to an embodiment of the invention, at least one of the lenses mounted to the first carrier part is the edged lens.

According to an embodiment of the invention, at least one of the lenses mounted to the second carrier part is the edged lens.

According to an embodiment of the invention, at least one of the lenses mounted to the first carrier is the reduction lens and at least one of the lenses mounted to the second carrier is the reduction lens.

According to an embodiment of the present invention, the edge-removing lens has a peripheral side edge, wherein the side edge includes at least one chord edge.

According to an embodiment of the invention, the side edges further comprise at least one rounded edge, wherein the rounded edge and the chord edge are connected to each other and the curvature of the rounded edge and the chord edge are different.

According to an embodiment of the invention, the chord edge is a straight line segment.

According to an embodiment of the invention, the number of the chord sides and the circular sides is one, respectively.

According to an embodiment of the present invention, the number of the chord side and the circular side is two, respectively, and both sides of one chord side are connected to one circular side, respectively.

According to an embodiment of the invention, the edge reduction lens is formed by injection molding in one piece.

According to another aspect of the present invention, there is provided a camera module, comprising:

the multi-group lens is obtained according to the above; and

a photosensitive assembly, wherein the multi-group lens is located in a photosensitive path of the photosensitive assembly, wherein the edge reduction lens comprises a central area and an edge area, the edge area is located outside the central area, at least part of light passing through the central area is projected onto the photosensitive assembly, and the chord edge is located in the edge area.

According to an embodiment of the present invention, the camera module includes a driving element, wherein the multi-group lens is mounted on the driving element, and the driving element is mounted on the photosensitive assembly.

According to another aspect of the present invention, there is provided a camera module, comprising:

the multi-group lens is obtained according to the above; and

a photosensitive assembly, wherein the multi-group lens is located in a photosensitive path of the photosensitive assembly, wherein the edge reduction lens comprises a central area and an edge area, wherein the edge area is located outside the central area, wherein the central area further comprises an active area and a non-active area, wherein the non-active area is located outside the active area, light passing through the active area is projected onto a photosensitive area of the photosensitive assembly, and wherein the chord edge is located in the non-active area.

According to an embodiment of the present invention, the camera module includes a driving element, wherein the multi-group lens is mounted on the driving element, and the driving element is mounted on the photosensitive assembly.

According to an embodiment of the present invention, the photosensitive assembly includes a photosensitive element, a circuit board, and a mirror base, the photosensitive element is electrically connected to the circuit board, and the mirror base is mounted on the circuit board.

According to another aspect of the present invention, there is provided a mobile electronic device comprising:

an electronic device body; and

at least a camera module, wherein the camera module is set up in the electronic equipment body, wherein the camera module includes:

the multi-group lens is obtained according to the above; and

and the multi-group lens is positioned on a photosensitive path of the photosensitive assembly.

According to another aspect of the present invention, there is provided a mobile electronic device comprising:

an electronic device body; and

at least one camera module, wherein the camera module comprises a multi-group lens and a photosensitive component, wherein the multi-group lens is located in a photosensitive path of the photosensitive component, wherein the multi-group lens comprises a first group lens and a second group lens, wherein the first group lens is supported on the photosensitive component through the second group lens, wherein the first group lens comprises a plurality of lenses and a first bearing part, wherein at least one lens is a reduced edge lens, the first bearing part is matched with the reduced edge lens and supports the reduced edge lens, and the camera module is arranged on the electronic device body.

According to an embodiment of the invention, the edge reduction lens has a peripheral side edge, wherein the side edge includes at least one chord edge, and the chord edge faces a side edge of the electronic device body.

According to an embodiment of the invention, the side edges further comprise at least one rounded edge, wherein the rounded edge and the chord edge are connected to each other and the curvature of the rounded edge and the chord edge are different.

According to an embodiment of the invention, the chord edge is a straight line segment.

According to an embodiment of the invention, the number of the chord sides and the circular sides is one, respectively.

According to an embodiment of the present invention, the number of the chord side and the circular side is two, respectively, and both sides of one chord side are connected to one circular side, respectively.

According to an embodiment of the invention, the edge reduction lens is formed by injection molding in one piece.

According to another aspect of the present invention, there is provided a method for assembling a multi-group lens, comprising the steps of:

s1, providing a first group lens and a second group lens, wherein the first group lens and the second group lens optionally include at least one edge shrinking lens;

s2, adjusting the relative positions of the first group lens and the second group lens according to the optical performance parameters of real shooting and in a mode of arranging the first group lens on the optical axis of the second group lens to form an imageable optical system; and

s3, connecting the first group lens and the second group lens so that the relative distance of the first group lens and the second group lens in the optical axis direction is kept at the adjusted position.

According to an embodiment of the invention, in the step S2, the relative positions of the first group lens and the second group lens are adjusted by rotation using the quality of the imaging effect as a determination criterion. According to an embodiment of the invention, in the step S1, a position pre-adjustment is performed on the first group of lenses and the second group of lenses.

According to an embodiment of the present invention, the step S1 further includes the following steps:

respectively positioning the first group of lenses and the second group of lenses to corresponding working positions;

and respectively carrying out position adjustment on the first group of lenses and the second group of lenses.

According to an embodiment of the present invention, in the method, the optical axes of the first group lens and the second group lens are not located on the same straight line, and after the position of the first group lens and the position of the second group lens are pre-adjusted, the first group lens is moved to the optical axis direction of the second group lens.

According to an embodiment of the present invention, the step S1 further includes the following steps:

respectively positioning the first group of lenses and the second group of lenses to corresponding working positions; and

and simultaneously adjusting the position of the first group of lenses and the second group of lenses.

According to an embodiment of the present invention, in the method, the first group of lenses and the second group of lenses are connected through a welding process.

According to an embodiment of the present invention, in the method, the first group of lenses and the second group of lenses are connected through a connection medium.

According to an embodiment of the present invention, in the above method, the first group of lenses and the second group of lenses with a photosensitive element are assembled.

According to another aspect of the present invention, there is provided a multi-group lens assembled by the assembly method described above.

According to another aspect of the present invention, there is provided a method for assembling a camera module, comprising the steps of:

providing a first group lens, a second group lens and a photosensitive element, wherein the first group lens and the second group lens optionally comprise at least one edge shrinking lens;

arranging the first group lens, the second group lens and the photosensitive element into an imageable optical system and adjusting the relative positions of the first group lens, the second group lens and the photosensitive element based on the real-shot optical performance parameters; and

and connecting the first group lens, the second group lens and the photosensitive assembly so that the first group lens, the second group lens and the photosensitive assembly are kept at the adjusted positions.

Drawings

Fig. 1 is a schematic diagram of a camera module according to a preferred embodiment of the invention.

FIG. 2 is a diagram of a multi-group lens according to a preferred embodiment of the present invention.

FIG. 3A is a schematic view of a reduction lens according to a preferred embodiment of the invention.

FIG. 3B is a schematic view of a reduction lens according to a preferred embodiment of the invention.

FIG. 3C is a schematic view of a reduction lens according to a preferred embodiment of the invention.

FIG. 3D is a schematic view of a reduction lens according to a preferred embodiment of the invention.

Fig. 4A is a schematic view illustrating the installation of a multi-group lens according to a preferred embodiment of the invention.

Fig. 4B is a schematic block diagram of a process for installing a multi-group lens according to a preferred embodiment of the invention.

Fig. 5A is a schematic view illustrating an installation of a camera module according to a preferred embodiment of the invention.

Fig. 5B is a block diagram illustrating an installation process of a camera module according to a preferred embodiment of the invention.

Fig. 5C is a schematic block diagram of an installation process of a camera module according to a preferred embodiment of the invention.

FIG. 6 is a diagram of a multi-group lens according to a preferred embodiment of the present invention.

FIG. 7 is a diagram of a multi-group lens according to a preferred embodiment of the present invention.

FIG. 8 is a diagram of an electronic device according to a preferred embodiment of the invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Along with the development of intelligent electronic equipment, the requirement for the camera module is higher and higher, for example smart mobile phone develops towards the direction of super frivolity, large screen, no change, high image quality. The camera module is composed of different components, the simplification of the components is almost the utmost with the development of high speed, and the further development, except for researching the possible improvement of each component, the matching improvement relationship among the components is also considered. According to an aspect of the present invention, the present invention provides a multi-group lens, which can improve a lens of a camera module on the premise of ensuring an imaging quality, so that the body shape of the camera module is reduced; furthermore, the multi-group lens and other components, such as the photosensitive assemblies, can be matched in structure, so that the overall size of the camera module is reduced, the external shape is more consistent, and the camera module is more suitable for being installed on electronic equipment.

Fig. 1 to 3A show a camera module 1 according to a preferred embodiment of the present invention. Fig. 3B to 3D respectively show various modified embodiments of a reduction lens according to the present invention. Fig. 8 shows a mobile electronic device 1000 in accordance with a preferred embodiment of the present invention.

The camera module 1 includes a multi-group lens 10 and a photosensitive device 20, wherein the multi-group lens 10 is located in a photosensitive path of the photosensitive device 20.

Further, the camera module 1 may further include a driving element 30, wherein the driving element 30 is mounted on the photosensitive element 20, so that the multi-group lens 10 can be maintained in a photosensitive path of the photosensitive element 20. The driving element 30 may be a motor, and the camera module 1 is an auto-focus camera module 1.

The multi-group lens 10 can also be directly mounted on the photosensitive element 20, and the camera module 1 is a fixed-focus camera module 1.

The multi-group lens 10 has a smaller size so that the photosensitive element 20 fitted to the multi-group lens 10 can be designed to have a smaller size accordingly, thereby allowing the camera module 1 to have a smaller size.

Specifically, the multi-group lens 10 includes a first group lens 11 and a second group lens 12, wherein the first group lens 11 and the second group lens 12 cooperate to form a complete optical lens.

The first group lens 11 is located above the second group lens 12 to form a complete light system. The optical system of the multi-group lens 10 is composed of two optical systems corresponding to the first group lens 11 and the second group lens 12. That is to say, to a certain extent, when the first group lens 11 and the second group lens 12 exist independently, the function of a complete lens cannot be completed, and when the first group lens 11 and the second group lens 12 are matched with each other, a complete lens capable of meeting the requirement of imaging quality is formed.

Further, the first group of lenses 11 includes a first bearing part 111 and at least a first lens, wherein the first lens is mounted on the first bearing part 111 so as to form an independent lens. The second group lens 12 includes a second bearing member 121 and at least a second lens, wherein the second lens is mounted on the second bearing member 121 so as to form an independent lens. The first lens and the second lens may be the same or different, and the "first" and the "second" are only used to illustrate the difference between the positions of the first lens and the second lens, where the first lens belongs to the first group of lenses 11 and the second lens belongs to the second group of lenses 12.

It is to be understood that, in the present example, the multi-group lens 10 includes two lenses, the first group lens 11 and the second group lens 12. The number of lenses included in the multi-group lens 10 is not limited to two, and may be three or more.

In this example, the number of the first lenses is one, and the first lens is a reduction lens. The first bearing part 111 is a lens cone with reduced edge. The edge-shrinking lens barrel is matched with the edge-shrinking lens.

In particular, at least a portion of the rounded edge of the first lens is removed, thereby allowing the first lens to be reduced in size relative to its original rounded shape and providing the advantage of reducing veiling glare. Further, the first bearing part 111 is removed at least partially from the circular edge of the original circular lens barrel, so that the size of the first group lens 11 is reduced, and thus the size of the second group lens 12 matched with the first group lens 11 can be reduced correspondingly, and thus the size of the photosensitive element 20 matched with the multi-group lens 10 can be reduced correspondingly.

It will be appreciated that both the reduced-edge lens and the reduced-edge barrel are relative to a circular structure, with portions of a circular structure being either at least partially rounded edges removed or replaced so that the edge of the reduced-edge lens is not a complete circle. It should be understood that the term "edge shrinking" refers to a structure with a contour included in an original circular shape, for example, by an integral molding process, and the description of the edge shrinking lens barrel is only a description of the shape, and does not imply a method for obtaining the shape by processing, and is similar to the edge shrinking lens. Further, the multi-group lens 10 includes a plurality of lenses 13, wherein at least one of the lenses 13 is a reduction edge lens, wherein the first lens is mounted on the first bearing member 111, and the second lens is mounted on the second bearing member 121. The position and number of the reduction edge lens can be selected according to requirements. The edge-shrinking lens is arranged in the corresponding edge-shrinking lens barrel.

In this example, the multi-group lens 10 composed of 5 lenses 13 is explained as an example, wherein the number of the first lenses of the first group lens 11 is one, and the number of the second lenses of the second group lens 12 is four. Of course, it is understood that the number of the first lenses of the first group of lenses 11 may be two, the number of the second lenses of the second group of lenses 12 may be three, or the number of the first lenses of the first group of lenses 11 may be three, the number of the second lenses of the second group of lenses 12 may be two, or the number of the first lenses of the first group of lenses 11 may be four, and the number of the second lenses of the second group of lenses 12 may be one. Of course, it is understood that the number of the lenses of the multi-group lens 10 may also be 2, 3, 4, 5 or more, etc. In the multi-group lens 10 with different numbers of lenses, the numbers of the first lens and the second lens in the first group lens 11 and the second group lens 12 can be designed according to actual requirements, and the numbers and positions of the edge reduction lenses in the first group lens 11 and the second group lens 12 can be designed according to actual requirements, so that at least one of the lenses becomes the edge reduction lens.

Further, it is understood that, in the present example, the number of lenses of the multi-group lens 10 is 2, and the first group lens 11 and the second group lens 12 are respectively. In other embodiments of the present invention, the number of the single lenses of the multi-group lens 10 may be 3 or more, and then the number of the lenses of each lens may be selected according to actual requirements.

More specifically, in this example, the number of the edge reduction lenses is one, and the second lenses mounted on the first bearing member 111 and the second bearing member 121 are all lenses having a circular shape. The first group lens 11 is located in the optical axis direction of the second group lens 12 and above the second group lens 12.

In this example, the multi-group lens 10 includes the first bearing member 111, the second bearing member 121, and the plurality of lenses 13, wherein the plurality of lenses 13 is five, and from the object side to the phase side, a first sub-lens 131, a second sub-lens 132, a third sub-lens 133, a fourth sub-lens 134, and a fifth sub-lens 135 are respectively disposed, wherein the first sub-lens 131 is mounted on the first bearing member 111 to form the first multi-group lens 10, and wherein the second sub-lens 132, the third sub-lens 133, the fourth sub-lens 134, and the fifth sub-lens 135 are mounted on the second bearing member 121 to form the second multi-group lens 10. The first sub-lens 131 is a reduction lens. The second sub-lens 132, the third sub-lens 133, the fourth sub-lens 134 and the fifth sub-lens 135 are each a circular lens. Accordingly, the first bearing part 111 is a reduced-edge barrel.

The first group lens 11 and the second group lens 12 may further include a connector, wherein the connector may be mounted to each lens 13, so that the lens 13 is better mounted to the first bearing member or the second bearing member. The connecting member may be a rubber pad, which can support and protect the lens 13.

In this example, the reduced-edge lenses of the first group of lenses 11 can be positionally adjusted relative to the circular lenses of the second group of lenses 12 during the positional adjustment of the first group of lenses 11 and the second group of lenses 12. In other embodiments of the present invention, during the process of adjusting the positions of the first group lens 11 and the second group lens 12, the reduced-edge lens of the first group lens 11 can be adjusted in position relative to the reduced-edge lens of the second group lens 12. That is, the relative position between the non-circular lens and the circular lens can be adjusted, and the first group lens 11 and the second group lens 12 can be adjusted independently or simultaneously, so that the relative position between the non-circular lens and the circular lens can be adjusted independently or separately. Likewise, the relative positions of the non-circular lenses of the first group of lenses 11 and the second group of lenses 12, respectively, can also be adjusted independently or separately. In this way, the position of the first group lens 11 mounted with the reduced-edge lens can be adjusted relative to the second group lens 12, and the first group lens 11 and the second group lens 12 can obtain a better imaging effect in the adjusting process, so as to be beneficial to the final imaging quality of the camera module 1.

It should be noted that, referring to fig. 8, the mobile electronic device 1000 includes at least one camera module 1 and an electronic device body 2, and after the camera module 1 is installed on the electronic device body 2, the first group lens 11 above the second group lens 12 can be observed by the user at the outside.

In other words, the first sub-lens 131 of the first group of lenses 11 can appear in the field of view of the user. The mobile electronic device 1000 has a front side and a back side, a display screen is mounted on the front side, and the upper portion of the camera module 1, for example, the first sub-lens 131 of the first group lens 11, affects the user's appearance when the user observes or uses the display screen. At present, the large screen and borderless of the development trend of the mobile electronic device 1000, especially the mobile phone, is to achieve an effect of a "full screen", so that what occupies the sight of the user on the front side of the mobile electronic device 1000 is a large screen, and the front side of the camera module 1 extends into the front side, thereby affecting the screen occupation ratio. In this example, the reduction of the body shapes of the first sub-lens 131 and the first bearing part 111 directly reduces the screen occupation ratio of the camera module 1, so as to improve the use feeling and experience feeling of the user and bring better visual enjoyment to the user.

In this example, the number of the lenses is increased by 5, that is, the first sub-lens 131 is smaller than the second sub-lens 132, the second sub-lens 132 is smaller than the third sub-lens 133, the third sub-lens 133 is smaller than the fourth sub-lens 134, and the fourth sub-lens 134 is smaller than the fifth sub-lens 135. In other embodiments of the present invention, the lenses 13 may be arranged in other shapes, such as an equal-size row, or the middle lens may be the largest, the front lens may be the smallest, and the rear lens may be the equal-size. The arrangement of the lenses with different shapes can be selected according to actual requirements.

The photosensitive assembly 20 includes a photosensitive element 21, a circuit board 22 and a base 23, wherein the photosensitive element 21 is electrically connected to the circuit board 22, and the base 23 is mounted on the circuit board 22. The second group lens 12 is located between the first group lens 11 and the photosensitive element 20.

The lens comprises a central area 1311 and an edge area 1312, wherein the edge area 1312 is located around the central area 1311 and the edge area 1312 is used for connecting to the first carrier part 111 or the second carrier part 121. The central area 1311 of the lens affects the imaging quality of the entire camera module 1. The edge region 1312 of the lens has little or negligible effect on the image quality of the entire camera module 1. In the process of designing the lens by edging, the influence on the central area 1311 after edging needs to be considered to avoid influencing the imaging quality of the whole camera module 1.

Specifically, the edge region 1312 is a circular ring structure, the central region 1311 is a spherical structure, the edge region 1312 is mainly used for connecting to the edge-reduced barrel, and the central region 1311 is mainly used for light passing.

The edge reduction lens has a side 1313, wherein the side 1313 is used to combine with the first carrier 111 or the second carrier 121 to form a separate component. The side edge 1313 comprises at least one chord edge 13131, wherein the chord edge 13131 is a straight line segment. The presence of the chord edge 13131 of the first sub-optic 131 relative to a complete circular optic allows the first sub-optic 131 to be correspondingly reduced in size relative to the original circular optic. Further, the first sub-lens 131 is matched with the first bearing part 111, wherein the first bearing part 111 is a reduced side drawtube. The size of the first multi-group lens 10 with the reduced-edge lenses is reduced relative to the size of the first multi-group lens 10 with the lenses that were previously circular.

When the camera module 1 is mounted on the electronic device body 2, preferably, the side where the chord 13131 is located is directed to a side or an edge of the electronic device body 2, so as to reduce the occupation of the space of the electronic device body 2 by the camera module 1 in the length direction or the width direction.

It is understood that the chord edge 13131 of the first sub-lens 131 is at the edge portion formed by the line segment of the non-original circular edge of the first sub-lens 131. The first sub-lens 131 may further include at least one rounded edge 13132. The chord 13131 is not limited to a straight line segment, but may be an arc segment, or any segment designed to fit within the center region 1311, or may be shaped to fit within the edge of the mobile electronic device. The chord edge 13131 may also be understood to be the edge of the lens that is missing a portion of the lens relative to the original lens that possessed a complete circle. The presence of the chord edge 13131 is of great importance for reducing the size of the first sub-lens 131 and the first carrier part 111.

In some examples of the invention, the side edge 1313 of the reduction lens may be formed by at least two segments of differing curvature that abut one another so that the side edge 1313 of the reduction lens is not a complete circle. In some examples of the invention, the sides 1313 of the reduction lenses may be formed by bell-jointing line segments of the same curvature, such as square lenses.

In this example, the number of the chord edge 13131 and the rounded edge 13132 is one, respectively. The second sub-lens 132, the third sub-lens 133, the fourth sub-lens 134, and the fifth sub-lens 135 each have a rounded side. That is, the second sub-lens 132, the third sub-lens 133, the fourth sub-lens 134 and the fifth sub-lens 135 are each a circular lens.

It is understood that in other examples of the invention, the number of the rounded edges 13132 may be 0, that is, the sides 1313 of the reduction lens are all formed by the chord edges 13131. In other examples of the invention, the number of the rounded edges 13132 may be 1 and the number of the chordal edges 13131 may be 2. In other examples of the present invention, the number of the rounded edges 13132 may be 2, and the number of the chord edges 13131 may be 2, for example, one of the chord edges 13131 is connected to both sides of one of the rounded edges 13132, or one of the chord edges 13131 and the other rounded edge 13132 are connected to one side of one of the rounded edges 13132. In other examples of the invention, the number of the rounded edges 13132 may be 1 and the number of the chordal edges 13131 may be 3. The proportional size and position of the chord edge 13131 and the rounded edge 13132 may be set according to different requirements, such as symmetrical or asymmetrical arrangement, a predetermined size ratio, and the like.

Fig. 3B shows an embodiment of the edge reduction lens, which is the first sub-lens 131, but it is understood that the lens at other positions may be the edge reduction lens, in this example, the numbers of the round edges 13132 and the chord edges 13131 of the edge reduction lens are 2, respectively, and one round edge 13132 and the other round edge 13132 are disposed opposite to each other, and one chord edge 13131 and the other chord edge 13131 are disposed opposite to each other. When the edge reduction lens is the first sub-lens 131 and the camera module 1 with the edge reduction lens is applied to the mobile electronic device 1000, when the string edge 13131 is located in a length direction, the proportion of the camera module 1 occupying the display screen of the mobile electronic device 1000 in the length direction decreases.

Fig. 3C shows an embodiment of the reduction lens, which is the first sub-lens 131, but it is understood that the lens at other locations may be the reduction lens, in this example, the side 1313 of the reduction lens includes the chord 13131, and the number of the chord 13131 is 4. When the edge-reduced lens is the first sub-lens 131 and the camera module 1 with the edge-reduced lens is applied to the mobile electronic device 1000, the ratio of the camera module 1 occupying the display screen of the mobile electronic device 1000 in the length direction and the width direction is decreased. The number of the rounded edges 13132 is 4, wherein the chord edges 13131 and the rounded edges 13132 are adjacent to each other, both ends of each of the chord edges 13131 are connected to the rounded edges 13132, respectively, and both ends of each of the rounded edges 13132 are connected to the chord edges 13131, respectively.

Fig. 3D shows an embodiment of the reduction lens, which is the first sub-lens 131, but it is understood that the lens at other positions may be the reduction lens, and in this example, the reduction lens includes a central area 1311 and an edge area 1312, wherein the edge area 1312 is located at an edge position of the central area 1311 and is mainly used for connecting to the reduction lens barrel. Further, the central region 1311 includes an active region 13111 and a non-active region 13112, wherein the active region 13111 affects the operation of the photosensitive element 21 of the photosensitive assembly 20 to have an influence on the final image formation effect, and the non-active region 13112 has little influence on the final image formation effect. In this example, the number of the chord edges 13131 is 2, the number of the round edges 13132 is 2, and the chord edges 13131 are located in the inactive area 13112 of the central area 1311 of the reduction lens, i.e. the reduction of the size of the reduction lens with respect to the original circular lens does not have an effect on the final imaging effect.

Further, preferably, each of the lenses is integrally formed during the manufacturing process, whether the lens is a round lens or a reduction lens. It will be appreciated by those skilled in the art that the lenses can be integrally injection molded by a mold and that the production cost of the edged lenses is reduced relative to the original round lenses. The string edge 13131 of the reduced edge lens helps to position the reduced edge lens and the corresponding reduced edge barrel when mounted.

It will be appreciated that the chord edge 13131 is located in the edge region 1312 of the lens so as to have little or no effect on the quality of the camera module 1. The central area 1311 of the reduction lens is unchanged from the central area 1311 of the original circular lens, i.e. the reduction in size of the reduction lens is based on the reduction in size of the edge area 1312. The central area 1311 of the lens corresponds to a light-sensing area of the light-sensing assembly 20, which is the primary area for receiving light. The edge region 1312 of the lens is used for connecting the first bearing member 111 or the second bearing member 121, and this position needs to block light from passing through, so as to avoid too much stray light from affecting the imaging quality.

By forming the chord edge 13131, the light intensity of the edge region 1312 of the edge reduction lens is reduced, which is beneficial to reducing the formation of stray light, thereby being beneficial to the imaging quality of the camera module 1, and meanwhile, the chord edge 13131 does not affect the central region 1311 in the process, thereby ensuring the imaging effect of the camera module 1.

The first bearing part 111 is designed and manufactured based on the size of the first lens 131 according to the size of the first lens 131. The first carrier part 111 may also be manufactured by an integral injection molding process. The first bearing part 111 may be a reduced side drawtube.

Specifically, the edge-reduced lens barrel includes at least one chord part 141 and at least one round part 142, wherein the chord part 141 corresponds to the chord edge 13131 of the edge-reduced lens, and the round part 142 corresponds to the round edge 13132 of the edge-reduced lens.

Preferably, the number, position and shape of the chord part 141 and the chord edge 13131 correspond to each other, and the number, position and shape of the round part 142 and the round edge 13132 correspond to each other. In this way, the size of the reduced-side barrel can be reduced compared with the original circular barrel, and the manufacturing cost of the reduced-side barrel can be reduced. It is worth mentioning that the edge-shrinking drawtube does not need to be made into a complete circle, so that the whole manufacturing difficulty can be reduced.

Furthermore, the production of an optical lens requires the processes of optical design, performance inspection, assembly, etc., and the whole optical system is a very sensitive and complex system. After the lenses are assembled to the first carrier 111 or the second carrier 121, since the lenses and the first carrier 111 or the second carrier 121 are formed in batches, and there is a difference in performance or molding form for each batch, it is necessary to adjust the rotation angle of each lens in the first carrier 111 or the second carrier 121 to seek the optimum performance, and the optimum rotation angle of the lenses manufactured by different equipment or different batches is different, so that products manufactured in different batches need to be readjusted and then assembled according to the adjusted position.

As for the edge reduction lens, once the edge reduction lens is applied to the all-in-one lens, because of the positioning function of the corresponding chord part 141 and the chord edge 13131, the installation angle of the edge reduction lens and the edge reduction lens barrel is fixed, thereby being not favorable for the final imaging quality.

In the present invention, the multi-group lens 10 is a split lens, and in this example, the reduction lens is located on the first bearing part 111 to form the first group lens 11, and the first group lens 11 can be adjusted relative to the second group lens 12. That is to say, the positions of the first lens 131, which is a reduced edge lens, relative to the second lens 132, the third lens 133, the fourth lens 134 and the fifth lens 135 of the second group lens 12 can be relatively adjusted, so that the first group lens 11 and the second group lens 12 can obtain a better imaging effect in the adjusting process, so as to be beneficial to the final imaging quality of the camera module 1.

Referring to fig. 4A and 4B, according to another aspect of the present invention, there is provided an assembling method of a multi-group lens 10, wherein the assembling method includes the steps of:

s1, providing a first group lens 11 and a second group lens 12, wherein the first group lens 11 and the second group lens 12 optionally include at least one of the edge shrinking lenses;

s2, adjusting the relative positions of the first group lens 11 and the second group lens 12 based on the optical performance parameters of real shooting and in a manner that the first group lens 11 is arranged on the optical axis of the second group lens 12 to form an imageable optical system; and

s3, connecting the first group lens 11 and the second group lens 12 so that the relative distance of the first group lens 11 and the second group lens 12 in the optical axis direction is maintained at the adjusted position.

It is understood that the optical axis of the first group lens 11 arranged on the second group lens 12 does not represent that the first group lens 11 and the second group lens 12 are located on the same optical axis. In fact, there may be an angle between the axes of the first group of lenses 11 and the second group of lenses 12 that is different from zero.

In some examples of the present invention, in the step S2, the relative positions of the first group lens 11 and the second group lens 12 are adjusted by rotation. For example, rotating the first group lens 11 along the axis of the first group lens 11 and rotating the second group lens 12 along the axis of the second group lens 12.

In some examples of the present invention, in the step S1, a position pre-adjustment is performed for the first group lens 11 and the second group lens 12.

In some examples of the present invention, the step S1 may further include the steps of:

positioning the first group of lenses 11 and the second group of lenses 12 to a corresponding working position respectively;

a position pre-adjustment is performed for the first group lens 11 and the second group lens 12, respectively.

In some examples of the present invention, the step S1 may further include the steps of:

positioning the first group of lenses 11 and the second group of lenses 12 to a corresponding working position respectively;

while a position pre-adjustment is made for the first group of lenses 11 and the second group of lenses 12.

Specifically, the first group lens 11 and the second group lens 12 may be fixed at one working position respectively, then, the positions of the first group lens 11 and the second group lens 12 are pre-adjusted, the first group lens 11 and the second group lens 12 are moved in a horizontal axis manner so that the first group lens 11 is located in the optical axis direction of the second group lens 12, and in this process, the first group lens 11 and the second group lens 12 can be respectively kept at the pre-adjusted positions, then, the relative positions of the first group lens 11 and the second group lens 12 are further adjusted according to an actual shooting effect of the first group lens 11 and the second group lens 12, and a certain space is left between the first group lens 11 and the second group lens 12 for adjusting the relative positions therebetween.

Finally, after the relative positions of the first group lens 11 and the second group lens 12 are determined according to the actual shooting effect, the relative positions of the first group lens 11 and the second group lens 12 can be fixed through a connecting medium.

In the present invention, the connection process of the relative positions of the first group lens 11 and the second group lens 12 can be selected according to actual situations. In one embodiment of the present invention, the first group lens 11 may be connected to the second group lens 12 through a bonding process. In another embodiment of the present invention, the first group lens 11 may be connected to the second group lens 12 through a laser welding process. In another embodiment of the present invention, the first group lens 11 may be connected to the second group lens 12 through an ultrasonic welding process. In another embodiment of the invention. Other welding processes may be selected in addition to the above-described processes.

Further, the first group lens 11 and the second group lens 12 may be connected to each other by the connection medium, which allows the relative distance between the first group lens 11 and the second group lens 12 in the optical axis direction to be kept constant. The connecting medium may also be another lens, such as a third group of lenses.

The connecting medium can be one or more of UV glue, thermosetting glue, UV thermosetting glue and epoxy resin.

More specifically, when the positions of the first group lens 11 and the second group lens 12 are pre-adjusted, the following methods may be adopted:

firstly, the first group lens 11 and the second group lens 12 are respectively fixed to different working positions, and tilt information, i.e. inclination information, of the first group lens 11 and the second group lens 12 is respectively obtained. The images may be sequentially obtained by laser height measurement or other methods, and the first group lens 11 may not be held in the optical axis direction of the second group lens 12, that is, the first group lens 11 and the second group lens 12 are not located on the same straight line in the height direction. The positions of the first group lens 11 and the second group lens 12 are individually pre-adjusted according to the acquired information of the first group lens 11 and the second group lens 12, and after the relevant detection information of the first group lens 11 and the second group lens 12 can meet a certain requirement, the first group lens 11 and the second group lens 12 are moved to enable the first group lens 11 to be located in the optical axis direction of the second group lens 12. It is possible to keep the position of the second group lens 12 fixed and then move the first group lens 11 to the optical axis direction of the second group lens 12. It is possible to keep the position of the first group lens 11 fixed and then move the second group lens 12 until the first group lens 11 is located in the optical axis direction of the second group lens 12. The first group lens 11 and the second group lens 12 may be moved simultaneously so that the first group lens 11 is located in the optical axis direction of the second group lens 12.

It is understood that in this process, the adjusted angles of the first group lens 11 and the second group lens 12 are kept unchanged.

Further, the first group lens 11 and the second group lens 12 can be respectively matched with a standard lens for adjustment during the process of respectively performing position pre-adjustment. For example, the first group lens 11 is moved above a standard lens, so that the first group lens 11 and the standard lens can form a complete optical lens. The position of the first group lens 11 is adjusted by an actual imaging effect of the first group lens 11 and the standard lens. Accordingly, the second group lens 12 is moved to the lower side of another standard lens, or another standard lens is moved to the upper side of the second group lens 12, and the second group lens 12 and the standard lens are located on the same optical axis. The second group lens 12 and the standard lens can form a complete optical lens, and the position of the second group lens 12 is adjusted by the actual imaging effect of the second group lens 12 and the standard lens. In this way, a pre-adjustment of the positions of the first group lens 11 and the second group lens 12 is achieved.

It is understood that the position of the first group lens 11 and the second group lens 12 may be pre-adjusted in other ways, which is only an example. The first group lens 11 and the second group lens 12 may be located on the same optical axis and then adjusted simultaneously.

Further, according to another aspect of the present invention, the present invention provides an assembling method of the camera module 1, wherein the assembling method of the camera module 1 includes the following steps:

assembling the multi-group lens 10 according to the above steps; and

the multi-group lens 10 is held in the photosensitive path of the photosensitive element 20.

Further, during the adjustment process, a photosensitive device 20 for cooperating with imaging may be a standard photosensitive device 20, or may be a photosensitive device 20 directly used for being mounted on the second group lens 12.

Further, fig. 5A, 5B and 5C show an assembling method of a camera module 1 according to another embodiment of the present invention and another preferred embodiment of the assembling method of the camera module 1 according to the present invention, the assembling method comprising the steps of:

step A: providing a first group unit 100 and a second group unit 200, wherein the first group unit 100 comprises the first group lens 11, the second group unit 200 comprises the second group lens 12 and the photosensitive element 20, wherein the first group lens 11 and the second group lens 12 optionally comprise at least one edge shrinking lens. A color filter 40 may be disposed between the second lens group 12 and the photosensitive element 20. The first group lens 11 includes at least one of the first lens and the first bearing member 111, and the second group lens 12 includes at least one of the second lens and the second bearing member 121. In this example, the number of the first lenses is one, and the first lenses are edge reduction lenses, it is understood that the number of the first lenses is not limited to one. In this example, the number of the second lenses is four, and each of the second lenses is a circular lens, it is understood that the number of the second lenses is not limited thereto, and the second lens may be a reduced edge lens.

And B: the relative positions of the first group unit 100 and the second group unit 200 are adjusted by arranging the first group unit 100 on the optical axis of the second group unit 200 to form an imageable optical system and based on the optical performance parameters of the real photographing. In this example, the optical system includes the first group lens 11, the second group lens 12, and the photosensitive element 20 built therein. The photosensitive assembly 20 includes a photosensitive element 21, a circuit board 22 and a lens holder 23, wherein the photosensitive element 21 is electrically connected to the circuit board 22, the lens holder 23 is mounted on the circuit board 22, and an optical window is formed on the lens holder 23 for allowing light passing through the first group lens 11 and the second group lens 12 to reach the photosensitive element 21 after passing through the optical window.

The photosensitive element 21 has a photosensitive surface 211, and an image plane of the optical system can be detected by using the photosensitive surface 211.

And C: the first group unit 100 and the second group unit 200 are connected such that the relative distance of the first group unit 100 and the second group unit 200 in the optical axis direction is maintained at the adjusted position.

For the assembled camera module 1, there is a desired image plane, which may be referred to as a target plane. In some cases, the target surface is a plane. For example, when the photosensitive surface 211 of the photosensitive element 21 of the camera module 1 is a plane, in order to achieve the imaging quality, the desired imaging surface of the multi-group lens 10 is also a plane, i.e. the target surface is a plane. In other cases, the target surface may also be a concave or convex or undulating surface. For example, if the photosensitive surface 211 of the photosensitive element 21 of the camera module 1 is a wavy curved surface, the desired image plane of the multi-group lens 10 is also a plane, and if the photosensitive surface 211 of the photosensitive element 21 of the camera module 1 is a convex surface, the desired image plane of the multi-group lens 10 is also a convex surface.

Further, in the present example, it is possible to recognize whether or not the imaging surface of the real shot and the target surface match from the image output from the photosensitive element 21. Since the shape of the photosensitive surface 211 of the photosensitive element 21 is the desired shape of the image forming surface. That is, the photosensitive surface 211 is the target surface, and therefore the image received by the photosensitive surface 211 of the photosensitive element 21 already implies curvature of field information of the target surface. Therefore, in order to provide image quality, the curvature of field according to the image output from the photosensitive element 21 should be as small as possible. In this case, an imaging surface formed by imaging by the optical system is matched with the target surface, so that superior imaging quality can be obtained.

Through such a mode, can solve the unable problem of adjusting of limit lens in the assembling process to be favorable to reducing on the one hand the size of module 1 of making a video recording, on the other hand is favorable to improving and is had the limit lens the module 1's of making a video recording product quality.

According to another aspect of the present invention, the present invention provides a method for assembling a camera module, comprising the steps of:

step a: providing a first group lens 11, a second group lens 12 and a photosensitive element 20, wherein the first group lens 11 and the second group lens 12 optionally include at least one edge shrinking lens;

step b: arranging the first group lens 11, the second group lens 12 and the photosensitive element 20 into an imageable optical system and adjusting the relative positions of the first group lens 11, the second group lens 12 and the photosensitive element 20 based on the real-shot optical performance parameters; and

step c: the first group lens 11, the second group lens 12 and the photosensitive element 20 are connected such that the first group lens 11, the second group lens 12 and the photosensitive element 20 are maintained at the adjusted positions.

A color filter 40 may be disposed between the second lens group 12 and the photosensitive element 20. The first group lens 11 includes at least one of the first lens and the first bearing member 111, and the second group lens 12 includes at least one of the second lens and the second bearing member 121. In this example, the number of the first lenses is one, and the first lenses are edge reduction lenses, it is understood that the number of the first lenses is not limited to one. In this example, the number of the second lenses is four, and each of the second lenses is a circular lens, it is understood that the number of the second lenses is not limited thereto, and the second lens may be a reduced edge lens.

The photosensitive assembly 20 includes a photosensitive element 21, a circuit board 22 and a lens holder 23, wherein the photosensitive element 21 is electrically connected to the circuit board 22, the lens holder 23 is mounted on the circuit board 22, and an optical window is formed on the lens holder 23 for allowing light passing through the first group lens 11 and the second group lens 12 to reach the photosensitive element 21 after passing through the optical window.

In other words, in the process of assembling the camera module, the photosensitive element 20 may be assembled to the second group lens 12 to form the second group unit 200, or the photosensitive element 20, the second group lens 12 and the first group lens 11 may be assembled after being independently adjusted.

Further, fig. 6 shows another embodiment of the multi-group lens 10A, and referring to fig. 8, in this example, the multi-group lens 10A includes a first group lens 11A and a second group lens 12A, wherein the first group lens 11A is held in an optical axis direction of the second group lens 12A and the first group lens 11A is located above the second group lens 12A. The light first passes through the first group lens 11A and then reaches the second group lens 12A.

The first group of lenses 11A includes a first bearing part 111A and at least a first lens, wherein the first lens is mounted on the first bearing part 111A. The second group lens 12A includes a second bearing member 121A and at least a second lens, wherein the second lens is mounted on the second bearing member 121A.

In this example, the multi-group lens 10A includes the first bearing part 111A, the second bearing part 121A, and a plurality of lenses 13A, wherein the plurality of lenses 13A includes a first sub-lens 131A, a second sub-lens 132A, a third sub-lens 133A, a fourth sub-lens 134A, a fifth sub-lens 135A, and a sixth sub-lens 136A, wherein the first sub-lens 131A and the second sub-lens 132A are located on the first bearing part 111A, and wherein the third sub-lens 133A, the fourth sub-lens 134A, the fifth sub-lens 135A, and the sixth sub-lens 136A are located on the second bearing part 121A. The first sub-lens 131A, the second sub-lens 132A, the third sub-lens 133A, the fourth sub-lens 134A, the fifth sub-lens 135A, and the sixth sub-lens 136A are respectively arranged from an object side to an image side.

The sixth sub-lens 136A is a reduction edge lens, and the size of the sixth sub-lens 136A is larger than the fifth sub-lens 135A, the fourth sub-lens 134A, the third sub-lens 133A, the second sub-lens 132A, and the first sub-lens 131A.

The sixth sub-lens 136A includes a central area 1311A and an edge area 1312A, wherein the edge area 1312A is located outside the central area 1311A. After passing through the sixth sub-mirror 136A, the light can reach the photosensitive element 21A. The photosensitive element 21A has a photosensitive area and a non-photosensitive area, the light passing through the central area 1311A of the sixth sub-mirror 136A mainly reaches the photosensitive area of the photosensitive element 21A, and the light passing through the edge area 1312A of the sixth sub-mirror 136A mainly reaches the non-photosensitive area of the photosensitive element 21A. That is, the central area 1311A of the sixth sub-lens 136A has an important influence on the imaging quality of the camera module 1A.

Sixth sub-lens 136A has a perimeter edge 1313A, and edge 1313A includes at least one chord 13131A and at least one rounded edge 13132A, wherein rounded edge 13132A is an arc of a circle, and chord 13131A is a partially removed edge relative to the portion that forms a complete circle with rounded edge 13132A. The chord edge 13131A may be a straight line segment or a curved line segment, and preferably the chord edge 13131A is located at the edge region 1312A. In other words, the edge-removed sixth lens element 136A does not affect the final imaging effect or the edge-removed sixth lens element 136A hardly affects the final imaging effect.

In other examples of the present invention, the chord edge 13131A may also be located in the non-effective area of the central area 1311A, and may have little or no effect on the final imaging effect while reducing the size.

In this example, since the sixth sub-optic 136A is the largest piece of the six lenses, the reduction in size of the sixth sub-optic 136A can reduce the size of the entire multi-group lens 10A to a greater extent.

The corresponding second bearing part 121A is a reduced-side barrel, wherein the reduced-side barrel includes a round side portion 142A and a chord side portion 141A, and wherein the chord side portion 141A is connected to the round side portion 142A. Preferably, the reduced-edge barrel may be formed by an integral injection molding process. The sixth sub-optic 136A is reduced in size so that the portion of the second carrier 121A that matches the sixth sub-optic 136A can also be reduced in size accordingly.

The chord edge portion 141A is located at a position corresponding to the chord edge 13131A of the sixth sub-lens 136A. The rounded edge portion 142A is located at a position corresponding to the rounded edge 13132A of the sixth sub-lens 136A and the edge positions of the third sub-lens 133A, the fourth sub-lens 134A and the fifth sub-lens 135A.

Further, when the first sub-lens 131A and the second sub-lens 132A are respectively mounted on the first bearing member 111A, the positions of the first sub-lens 131A and the second sub-lens 132A can be relatively adjusted with respect to the position of the first bearing member 111A. When the third lens piece 133A, the fourth lens piece 134A and the fifth lens piece 135A are respectively mounted on the second bearing member 121A, the positions of the circular third lens piece 133A, the circular fourth lens piece 134A and the circular fifth lens piece 135A can be relatively adjusted with respect to the circular edge 142A of the second bearing member 121A.

However, for the sixth sub-lens 136A, the relative position of the sixth sub-lens 136A and the second bearing member 121A cannot be adjusted due to the positioning effect of the joint of the chord edge 13131A and the circular edge 13132A.

Further, after the first group lens 11A and the second group lens 12A are assembled, the relative position of the sixth sub-lens 136A with respect to the first bearing member 111A, the first sub-lens 131A and the second sub-lens 132A can be adjusted by adjusting the relative position of the first group lens 11A and the second group lens 12A. The first group lens 11A and the second group lens 12A are then packaged as one complete optical lens.

It can be understood that, when the camera module 1 composed of the multi-group lens 10A and the photosensitive element 20 is mounted on the mobile electronic device 1000, the reduction in size of the sixth sub-lens 136A and the portion corresponding to the second bearing part 121A of the second group lens 12A facilitates the mounting of the camera module 1A on the mobile electronic device 1000, so that the mobile electronic device 1000 can provide a smaller mounting space for the camera module 1A.

Further, fig. 7 shows another embodiment of the multi-group lens 10B, and referring to fig. 8, in this example, the multi-group lens 10B includes a first group lens 11B and a second group lens 12B, wherein the first group lens 11B is held in an optical axis direction of the second group lens 12B and the first group lens 11B is located above the second group lens 12B. The light first passes through the first group lens 11B and then reaches the second group lens 12B.

The first group of lenses 11B includes a first bearing member 111B and at least a first lens, wherein the first lens is mounted on the first bearing member 111B. The second group lens 12B includes a second bearing member 121B and at least a second lens, wherein the second lens is mounted on the second bearing member 121B.

In this example, the multi-group lens 10B includes the first bearing part 111B, the second bearing part 121B, and the plurality of lenses 13B, wherein the plurality of lenses 13B includes a first sub-lens 131B, a second sub-lens 132B, a third sub-lens 133B, a fourth sub-lens 134B, a fifth sub-lens 135B, and a sixth sub-lens 136B, wherein the first sub-lens 131B, the second sub-lens 132B, and the third sub-lens 133B are located on the first bearing part 111B, and wherein the fourth sub-lens 134B, the fifth sub-lens 135B, and the sixth sub-lens 136B are located on the second bearing part 121B. The first sub-lens 131B, the second sub-lens 132B, the third sub-lens 133B, the fourth sub-lens 134B, the fifth sub-lens 135B, and the sixth sub-lens 136B are respectively arranged from an object side to an image side.

The sixth sub-lens 136B, the fifth sub-lens 135B, the fourth sub-lens 134B, the third sub-lens 133B, the second sub-lens 132B, and the first sub-lens 131B are all a reduction lens.

Taking the sixth sub-lens 136B as an example, the sixth sub-lens 136B includes a central area 1311B and an edge area 1312B, wherein the edge area 1312B is located outside the central area 1311B. The light can reach the photosensitive element 21B after passing through the sixth sub-mirror 136B. The photosensitive element 21B has a photosensitive area and a non-photosensitive area, the light passing through the central area 1311B of the sixth sub-mirror 136B mainly reaches the photosensitive area of the photosensitive element 21B, and the light passing through the edge area 1312B of the sixth sub-mirror 136B mainly reaches the non-photosensitive area of the photosensitive element 21B. That is, the central area 1311B of the sixth sub-lens 136B has an important influence on the imaging quality of the camera module 1B.

Sixth sub-lens 136B has a perimeter edge 1313B, and edge 1313B includes at least one chord 13131B and at least one rounded edge 13132B, wherein rounded edge 13132B is a circular arc, and chord 13131B is a partially removed edge relative to the portion that forms a complete circle with rounded edge 13132B. The chord edge 13131B may be a straight line segment or a curved line segment, and preferably the chord edge 13131B is located at the edge region 1312B. In other words, the edge-removed sixth sub-mirror 136B does not affect the final imaging effect or the edge-removed sixth sub-mirror 136B hardly affects the final imaging effect.

In other examples of the present invention, the chord edge 13131B may also be located in the non-effective area of the central area 1311B, and may not affect or may hardly affect the final imaging effect while reducing the size.

The corresponding first bearing part 111B and the second bearing part 121B are both a reduced-edge lens barrel, wherein the second bearing part 121B is taken as an example for illustration,

wherein the edge-shrunk barrel comprises a round edge part 142B and a chord edge part 141B, wherein the chord edge part 141B is connected to the round edge part 142B. Preferably, the reduced-edge barrel may be formed by an integral injection molding process.

The fourth sub-lens 134B, the fifth sub-lens 135B and the sixth sub-lens 136B are reduced in size relative to the original circular lens, and the size of the second bearing part 121B matching with the fourth sub-lens 134B, the fifth sub-lens 135B and the sixth sub-lens 136B is also reduced correspondingly, especially an area size. The area size of the entire second group lens 12B is reduced.

The chord edge portion 141B corresponds to the chord edge 13131B location of the fourth sub-lens 134B, the fifth sub-lens 135B, and the sixth sub-lens 136B. The rounded edge portion 142B corresponds to the rounded edge 13132B location of the fourth sub-lens 134B, the fifth sub-lens 135B, and the sixth sub-lens 136B.

In contrast, for the first bearing part 111B, the first sub-lens 131B, the second sub-lens 132B and the third sub-lens 133B are respectively a reduced-edge lens, the first bearing part 111B is a reduced-edge lens barrel, and the size of the whole first group lens 11B is reduced.

Further, during the assembly process of the first group lens 11B or the second group lens 12B, the relative positions between the first sub-lens 131B, the second sub-lens 132B, the third sub-lens 133B and the first bearing member 111B cannot be adjusted, and the relative positions between the fourth sub-lens 134B, the fifth sub-lens 135B, the sixth sub-lens 136B and the second bearing member 121B cannot be adjusted.

After the first group lens 11B and the second group lens 12B are assembled, the relative positions of the sixth sub-lens 136B with respect to the first bearing member 111B, the first sub-lens 131B and the second sub-lens 132B can be adjusted by adjusting the relative positions of the first group lens 11B and the second group lens 12B. The first group lens 11B and the second group lens 12B are then packaged as one complete optical lens.

It can be understood that, when the camera module 1B composed of the multi-group lens 10B and the photosensitive element 20 is installed in the mobile electronic device 1000, the reduction in size of the first group lens 11B and the second group lens 12B facilitates the installation of the camera module 1B in the mobile electronic device 1000, so that the mobile electronic device 1000 can provide a smaller installation space for the installation of the camera module 1B. Further, the reduction of the size of the camera module 1B enables the screen occupation ratio of the camera module 1B relative to the display screen to be correspondingly reduced.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims (34)

1. A multi-group lens comprising a plurality of lenses and at least two carrier members, a first carrier member and a second carrier member, wherein at least one of said lenses is mounted to said first carrier member to form an independent first group lens, wherein at least one of said lenses is mounted to said second carrier member to form an independent second group lens, wherein at least one of said lenses is a reduction edge lens.

2. A multi-group lens as recited in claim 1, wherein at least one of the lenses mounted to the first carrier is the rimmed lens.

3. A multi-group lens as recited in claim 1, wherein at least one of the lenses mounted to the second carrier is the rimmed lens.

4. The multi-group lens as claimed in claim 1, wherein at least one of the lenses mounted to the first carrier is the rimmed lens and at least one of the lenses mounted to the second carrier is the rimmed lens.

5. The multi-group lens as claimed in any one of claims 1 to 4, wherein the demagnified lens has a perimeter side, wherein the side comprises at least one chord.

6. The multi-group lens as claimed in claim 5, wherein the side edge further comprises at least one rounded edge, wherein the rounded edge and the chord edge are connected to each other, and the curvatures of the rounded edge and the chord edge are different.

7. The multi-group lens of claim 6, wherein the chordal edge is a straight line segment.

8. The multi-group lens of claim 7, wherein the number of chord sides and the circular sides are one, respectively.

9. The multi-group lens as claimed in claim 7, wherein the number of the chord side and the circular side is two, respectively, and both sides of one chord side are connected to one circular side, respectively.

10. The multi-group lens as claimed in claims 1 to 4, wherein the demagnified lens is integrally injection molded.

11. A camera module, comprising:

a multi-group lens according to any one of claims 1 to 10; and

and the edge reduction lens comprises a central area and an edge area, the edge area is positioned outside the central area, light rays passing through the central area are projected on the photosensitive assembly, and the chord edge is positioned in the edge area.

12. The camera module of claim 11, wherein the camera module includes a drive element, wherein the multi-group lens is mounted to the drive element, and the drive element is mounted to the photosensitive element.

13. A camera module, comprising:

a multi-group lens according to any one of claims 1 to 10; and

a photosensitive assembly, wherein the multi-group lens is located in a photosensitive path of the photosensitive assembly, wherein the edge reduction lens comprises a central area and an edge area, wherein the edge area is located outside the central area, wherein the central area further comprises an active area and a non-active area, wherein the non-active area is located outside the active area, light passing through the active area is projected onto a photosensitive area of the photosensitive assembly, and wherein the chord edge is located in the non-active area.

14. The camera module of claim 13, wherein the camera module comprises a drive element, wherein the multi-group lens is mounted to the drive element, and the drive element is mounted to the photosensitive element.

15. The camera module of claim 14, wherein the photosensitive assembly comprises a photosensitive element, a circuit board, and a mirror mount, the photosensitive element being electrically connected to the circuit board, the mirror mount being mounted to the circuit board.

16. A mobile electronic device, comprising:

an electronic device body; and

at least a camera module, wherein the camera module is set up in the electronic equipment body, wherein the camera module includes:

a multi-group lens according to any one of claims 1 to 10; and

and the multi-group lens is positioned on a photosensitive path of the photosensitive assembly.

17. A mobile electronic device, comprising:

an electronic device body; and

at least one camera module, wherein the camera module comprises a multi-group lens and a photosensitive component, wherein the multi-group lens is located in a photosensitive path of the photosensitive component, wherein the multi-group lens comprises a first group lens and a second group lens, wherein the first group lens is supported on the photosensitive component through the second group lens, wherein the first group lens comprises a plurality of lenses and a first bearing part, wherein at least one lens is a reduced edge lens, the first bearing part is matched with the reduced edge lens and supports the reduced edge lens, and the camera module is arranged on the electronic device body.

18. The mobile electronic device of claim 17, wherein the edge reduction lens has a perimeter side, wherein the side comprises at least one chord, wherein the chord faces a side of the electronic device body.

19. The multi-group lens as claimed in claim 18, wherein the side further comprises at least one rounded edge, wherein the rounded edge and the chordal edge are connected to each other and have different curvatures.

20. The multi-group lens of claim 18, wherein the chordal edge is a straight line segment.

21. The multi-group lens of claim 19, wherein the number of chordal edges and rounded edges is one, respectively.

22. The multi-group lens according to claim 19, wherein the number of the chord and the circular edge is two, respectively, and both sides of one of the chord edge are connected to one of the circular edges, respectively.

23. A multi-group lens as claimed in claims 17 to 23, wherein the demagnified lens is integrally injection moulded.

24. A method for assembling a multi-group lens includes the following steps:

s1, providing a first group lens and a second group lens, wherein the first group lens and the second group lens optionally include at least one edge shrinking lens;

s2, adjusting the relative positions of the first group lens and the second group lens according to the optical performance parameters of real shooting and in a mode of arranging the first group lens on the optical axis of the second group lens to form an imageable optical system; and

s3, connecting the first group lens and the second group lens so that the relative distance of the first group lens and the second group lens in the optical axis direction is kept at the adjusted position.

25. The assembling method according to claim 24, wherein in the step S2, the relative positions of the first group lens and the second group lens are adjusted by rotation with the quality of the imaging effect as a criterion.

26. The assembling method according to claim 24, wherein in the step S1, a position pre-adjustment is made for the first group lens and the second group lens.

27. The assembling method according to claim 24, wherein the step S1 further comprises the steps of:

respectively positioning the first group of lenses and the second group of lenses to corresponding working positions;

and respectively carrying out position adjustment on the first group of lenses and the second group of lenses.

28. The assembly method according to claim 26, wherein in the above method, the optical axes of the first group lens and the second group lens are not located on the same line, and after the position of the first group lens and the second group lens is pre-adjusted, the first group lens is moved to the optical axis direction of the second group lens.

29. The assembling method according to claim 24, wherein the step S1 further comprises the steps of:

respectively positioning the first group of lenses and the second group of lenses to corresponding working positions; and

and simultaneously adjusting the position of the first group of lenses and the second group of lenses.

30. The method of assembling of claim 24, wherein in the method, the first and second groups of lenses are joined by a welding process.

31. The method of assembling as claimed in claim 24, wherein in the method, the first group of lenses and the second group of lenses are connected by a connecting medium.

32. The method of claim 24, wherein the first group of lenses and the second group of lenses with a photosensitive element are assembled in the method.

33. A multi-group lens assembled by the assembly method according to any one of claims 24 to 32.

34. The method for assembling the camera module is characterized by comprising the following steps of:

providing a first group lens, a second group lens and a photosensitive element, wherein the first group lens and the second group lens optionally comprise at least one edge shrinking lens;

arranging the first group lens, the second group lens and the photosensitive element into an imageable optical system and adjusting the relative positions of the first group lens, the second group lens and the photosensitive element based on the real-shot optical performance parameters; and

and connecting the first group lens, the second group lens and the photosensitive assembly so that the first group lens, the second group lens and the photosensitive assembly are kept at the adjusted positions.

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