CN112751989B

CN112751989B - Camera module, lens with mark and manufacturing method thereof

Info

Publication number: CN112751989B
Application number: CN201911037405.1A
Authority: CN
Inventors: 周凯伦; 李潍; 吴炳
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2022-04-29
Anticipated expiration: 2039-10-29
Also published as: CN112751989A

Abstract

The invention provides a camera module, a marked lens and a manufacturing method thereof, wherein the camera module comprises a lens and a photosensitive assembly. The lens comprises a lens barrel, at least one first lens unit, at least one second lens unit and at least one identification element, wherein the first lens unit and the second lens unit are arranged on the lens barrel, the first lens unit is a non-revolving body, the identification element is arranged on the lens barrel, and the identification element is used for positioning the first lens unit.

Description

Camera module, lens with mark and manufacturing method thereof

Technical Field

The present disclosure relates to camera modules, and particularly to a camera module, a lens with a mark, and a method for manufacturing the same.

Background

With the popularization of mobile electronic devices, the camera device becomes an essential part of the electronic terminal device, and is used for meeting the requirements of users for shooting images. The array camera module usually includes at least two camera modules, and the combination of the camera modules with different functions is carried out according to different photographing requirements, so that the camera module has more excellent performance than single-lens camera shooting in the aspects of zoom shooting, large-field shooting and the like, and becomes popular application in the present and future.

At present, the array camera module generally includes a telephoto camera module, a wide-angle camera module, and a common module, for example, a common dual-camera module includes a telephoto module and a wide-angle module. Be equipped with the array module of making a video recording on single electronic terminal, the increase of the module quantity of making a video recording and the joining of new function module of making a video recording have proposed higher requirement to the production technology, production efficiency and the equipment requirement of the module of making a video recording.

Because the wide-angle camera module has a large field angle, the field curvature distortion caused by the large inclination of the light is large, for example, the distortion of a lens with a field angle of 130 degrees is larger than 10%. When the current checkerboard shooting test is used, the large distortion of the wide-angle shooting module in the process of testing the resolution causes difficulty in testing the resolution of the four corners of the conventional CTF standard, namely, the image shot by the wide-angle shooting module is affected by the distortion and the curve of the peripheral test straight line is serious. When the calculation is performed by using the existing edge processing algorithm, the error is large, the overall resolving power of the wide-angle camera module is poor, and the distortion correction is usually performed by adopting software. On the other hand, as the field angle of the wide-angle camera module is larger and larger, and the distortion range adjustable by software is limited, it is difficult to satisfy the distortion correction generated by the field angle exceeding 110 °. On the other hand, software distortion correction has a problem of loss of pixels in the adjustment region, and the amount of image data to be processed by software correction is very large, and the required hardware requirement is also very high.

In order to solve the distortion problem of the wide-angle camera module, starting from the improvement of an optical system, a free-form surface optical lens is adopted to replace at least one common optical lens in a lens, the design freedom of the free-form surface is utilized to design the optical path of the optical system, the distortion influence caused by a large wide angle is reduced, and the technical parameters of the optical system are improved. Because the free-form surface optical lens is a non-rotational symmetric body, great uncertainty exists when the free-form surface optical lens is installed, and particularly, an effective imaging area formed by the free-form surface optical lens needs to be corresponding to an imaging area of the photosensitive chip in the assembling process of the camera module. When the lens with the free-form surface optical lens is assembled, the direction of an effective imaging area of the free-form surface is difficult to observe, so that the assembly is difficult. In the process of reassembling the lens assembly of the camera module, due to the existence of the free-form surface optical lens, the lens assembly not only needs to move and incline in the plane direction, but also needs to correspond to the imaging area of the photosensitive chip according to the effective imaging area, and therefore needs to be adjusted in a rotating mode. The assembly speed of the lens with the free-form surface optical lens in the prior art is limited by the position adjustment of the free-form surface optical lens, and the assembly speed is difficult to improve.

On the other hand, for the camera module capable of automatically focusing, namely the camera module with the motor, in the assembly process of the existing common camera module, the motor is firstly locked with the lens at a fixed height, and in the active focusing process, the equipment clamps the motor and the whole lens to be adjusted with the photosensitive assembly. When the lens provided with the free-form surface optical lens is still assembled according to the above mode, after the rotation adjustment, the motor shell and the circuit board are easily dislocated, so that the appearance of the camera module is poor.

Disclosure of Invention

One of the main advantages of the present invention is to provide a camera module, a marked lens and a method for manufacturing the same, wherein the lens is a marked lens for identifying a position of an imaging plane formed by the lens, which facilitates the assembly of the camera module.

Another advantage of the present invention is to provide a camera module, a marked lens and a method for manufacturing the same, wherein the lens includes at least a first lens unit, and an effective diameter of the first lens unit is identified by the mark, so as to assemble the lens based on the effective diameter of the first lens unit.

Another advantage of the present invention is to provide a camera module, a marked lens and a method for manufacturing the same, wherein the lens includes a marking element, wherein the marking element is disposed on a lens barrel of the lens, and the effective diameter of the first lens unit in the lens is identified by the position of the marking element, so as to assemble the lens based on the effective diameter.

Another advantage of the present invention is to provide a camera module, a lens with a mark, and a manufacturing method thereof, wherein the lens marks the effective diameter, which is beneficial to simplify the assembly process steps of the camera module, achieve the fast assembly of the camera module with the first lens unit, and improve the production efficiency of the camera module.

Another advantage of the present invention is to provide a camera module, a marked lens and a method for manufacturing the same, wherein a motor of the camera module is directionally assembled through the marking element so that the lens is aligned with the motor direction to conform the appearance of the module.

Another advantage of the present invention is to provide a camera module, a marked lens and a method for manufacturing the same, wherein the lens simplifies the process of correcting the optical system of the camera module, and reduces the distortion design by adjusting the optical system itself, so that the amount of calculation and image loss in the process of correcting the image of the camera module are reduced.

Another advantage of the present invention is to provide a camera module, a marked lens and a manufacturing method thereof, wherein the marking element of the lens is disposed on the lens barrel, which facilitates the visual recognition device to identify the lens according to the position of the marking element, and facilitates the automation and intelligence of the assembly process.

Another advantage of the present invention is to provide a camera module, a marked lens and a method for manufacturing the same, wherein the lens surface of the lens is formed with the marking elements by forming holes at specific positions or forming raised marking points, which simplifies the manufacturing and manufacturing processes of the lens.

Additional advantages and features of the invention will be set forth in the detailed description which follows and in part will be apparent from the description, or may be learned by practice of the invention as set forth hereinafter.

In accordance with one aspect of the present invention, the foregoing and other objects and advantages are achieved by a lens barrel comprising:

a lens barrel;

at least one first lens unit and at least one second lens unit, wherein the first lens unit and the second lens unit are disposed on the lens barrel, wherein the first lens unit is a non-rotating body; and

at least one identification element, wherein the identification element is disposed on the lens barrel, and the identification element is used for positioning the first lens unit.

According to an embodiment of the invention, the identification element has a fixed preset angle with the first lens unit, so as to determine the position and angle of the first lens unit according to the identification element.

According to an embodiment of the present invention, the first lens unit includes an effective diameter portion and a structural portion, wherein the structural portion extends outwardly from the effective diameter portion, and the identification element is disposed on the lens barrel corresponding to a specific position away from the effective diameter portion based on the effective diameter portion of the first lens unit, whereby the identification element marks the position and direction of the effective diameter portion.

According to an embodiment of the present invention, the first lens unit includes an effective diameter portion and a structural portion, wherein the structural portion extends outwardly from the effective diameter portion, the first lens unit is adjusted based on the position of the identification element so that the effective diameter portion of the first lens unit is located at a specific position from the identification element, whereby the identification element marks the effective diameter portion.

According to an embodiment of the present invention, the identification element is integrally disposed on the lens barrel, and the identification element is a protrusion structure.

According to an embodiment of the present invention, the identification member further includes an identification body integrally formed with the lens barrel and further provided with at least one identification groove formed in the identification body to identify the identification member by visually recognizing the identification groove.

According to an embodiment of the present invention, the identification member further includes an identification main body integrally formed with the lens barrel and further provided with at least one cut edge, wherein the cut edge is formed on the identification main body to identify the identification member by visually recognizing the cut edge.

According to an embodiment of the present invention, the identification element is a coating layer, and the identification element is attached to the lens barrel.

According to an embodiment of the present invention, the lens barrel further includes a barrel main body and a lens mounting cavity, wherein the first lens unit and the second lens unit are fixed to the lens mounting cavity by the barrel main body, the barrel main body further includes a barrel upper end portion and a barrel lower end portion, wherein the identification element is disposed at the barrel upper end portion of the barrel main body.

According to an embodiment of the present invention, the lens barrel further includes a barrel main body and a lens mounting cavity, wherein the first lens unit and the second lens unit are fixed to the lens mounting cavity by the barrel main body, the barrel main body further includes a barrel upper end portion and a barrel lower end portion, wherein the identification element is disposed at the barrel lower end portion of the barrel main body.

According to an embodiment of the present invention, the lens barrel body of the lens barrel has a barrel outer side wall, wherein the identification element is disposed on the barrel outer side wall of the lens barrel body.

According to another aspect of the present invention, the present invention further provides a camera module, including:

a photosensitive assembly; and

a lens, wherein the lens is disposed on the photosensitive component, wherein the lens further comprises:

a lens barrel;

According to an embodiment of the present invention, the photosensitive assembly includes a circuit board, a photosensitive element, wherein the photosensitive element is conductively disposed on the circuit board, and the lens is disposed on a photosensitive path of the photosensitive element.

According to an embodiment of the present invention, the first lens unit and the second lens unit form an image plane on the upper surface of the photosensitive element, and the installation position of the lens and the photosensitive assembly is adjusted based on the position and the angle of the image plane.

According to an embodiment of the present invention, the optical lens system further includes a lens fixing device, wherein the lens barrel of the lens is fixed to the lens fixing device in an oriented manner based on the position of the identification element, the position of the identification element identified by vision identifies the relative position of the imaging surface and the photosensitive imaging area of the photosensitive element, and the lens fixing device is further adjusted to make the imaging surface fit to the photosensitive imaging area of the photosensitive element.

According to an embodiment of the present invention, the lens barrel further comprises a motor and a motor housing, wherein the direction of the identification element of the lens barrel and the direction of the housing of the motor have a fixed preset angle.

According to an embodiment of the present invention, the first lens unit includes an effective diameter portion and a structural portion, wherein the structural portion extends outwardly from the effective diameter portion, and the identification element is disposed on the lens barrel corresponding to a specific position away from the effective diameter portion based on the effective diameter portion of the first lens unit, whereby the identification element marks the effective diameter portion.

According to another aspect of the present invention, the present invention further provides a method of manufacturing a lens barrel, wherein the method includes the steps of:

(a) arranging at least one identification element on a lens barrel;

(b) assembling at least one first lens unit and at least one second lens unit in a lens barrel, wherein the first lens unit comprises an effective diameter part and a structural part; and

(c) adjusting the position of the at least one first lens unit to a specific position of the identification element based on the position of the identification element, whereby the identification element marks the effective diameter of the first lens unit.

According to an embodiment of the present invention, in the step (a), the identification member is formed on a barrel body of the barrel, and the identification member is a protrusion integrally formed on the barrel body.

According to an embodiment of the present invention, in the step (a), the identification member is formed on a barrel body of the barrel, and the identification member includes an identification body and an identification groove formed on the identification body.

According to an embodiment of the present invention, in the step (a), the identification member is disposed at an upper end portion of a lens barrel of the lens barrel body.

According to an embodiment of the present invention, in the step (a), the identification member is disposed at a lens barrel lower end portion of the lens barrel body.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

Fig. 1 is an overall schematic view of a camera module according to a first preferred embodiment of the invention.

Fig. 2A is a cross-sectional view of the camera module according to the above preferred embodiment of the invention.

Fig. 2B is a cross-sectional view of another alternative implementation of the camera module according to the above preferred embodiment of the invention.

Fig. 3 is an overall schematic view of a lens of the camera module according to the above preferred embodiment of the invention.

Fig. 4 is a top view of the lens of the camera module according to the above preferred embodiment of the invention.

Fig. 5 is a schematic diagram of an image plane formed by the lens of the camera module according to the above preferred embodiment of the invention.

Fig. 6 is an assembly view of the camera module according to the above preferred embodiment of the invention.

Fig. 7A is a schematic view of another alternative implementation of a lens of the camera module according to the above preferred embodiment of the invention.

Fig. 7B is a schematic view of another alternative implementation of a lens of the camera module according to the above preferred embodiment of the invention.

Fig. 7C is a schematic view of another alternative implementation of a lens of the camera module according to the above preferred embodiment of the invention.

Fig. 7D is a schematic diagram of another alternative implementation of a lens of the camera module according to the above preferred embodiment of the invention.

Fig. 7E is a schematic view of another alternative implementation of a lens of the camera module according to the above 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.

Referring to fig. 1 to 6 of the drawings accompanying the present specification, a camera module according to a first preferred embodiment of the present invention is explained in the following description. The camera module comprises a lens 10, a photosensitive component 20 and a lens fixing device 30, wherein the lens 10 is fixedly arranged on the lens fixing device 30, and the lens 10 is fixed on the photosensitive component 20 by the lens fixing device 30 under the condition of electrifying based on the optical imaging performance of the photosensitive component 20 through the lens fixing device 30. The lens 10 has an identification function, wherein the lens 10 is directionally arranged on the lens fixing device 30 based on the identification position of the lens 10, and the relative position of the lens 10 and the photosensitive component 20 is adjusted by adjusting the position of the lens fixing device 30.

The lens 10 corrects distortion generated by imaging light rays projected to the photosensitive assembly 20 within the field range of the camera module, the lens 10 forms an imaging surface 101 at a position corresponding to the photosensitive assembly 20, wherein the shape of the imaging surface 101 is adapted to the imaging area of the photosensitive assembly 20, so as to correct the field curvature distortion of the camera module by means of the correction of the lens 10. In other words, when the lens 10 is mounted, the lens 10 is fixed to the photosensitive member 20 by the lens fixing device 30 in such a manner that the shape of the imaging surface 101 of the lens 10 is adapted to the shape of the imaging area of the photosensitive member 20.

As shown in fig. 2A, the lens 10 includes a lens barrel 11, at least one first lens unit 12, at least one second lens unit 13, and at least one identification element 14, wherein the at least one first lens unit 12 and the at least one second lens unit 13 are sequentially stacked on the lens barrel 11, and the lens barrel 11 fixes the first lens unit 12 and the second lens unit 13. The identification element 14 is provided to the lens barrel 11, and the position of the imaging surface 101 of the lens 10 is identified by the identification element 14. By visually recognizing the position of the identification element 14, the lens 10 is fixed to the lens fixing device 30 in an oriented manner, i.e. the lens barrel 11 of the lens 10 is fixed to the lens fixing device 30 according to the position of the identification element 14. After the lens 10 is fixed to the lens holder 30, the identification element 14 is located at a specific position of the lens holder 30, so as to adjust the relative position of the lens holder 30 and the photosensitive component 20 by visually recognizing the identification element 14.

The photosensitive assembly 20 includes a circuit board 21, a photosensitive element 22, a lens holder 23 and at least one optical filter 24, wherein the photosensitive element 22 is conductively disposed on the circuit board 21, the lens holder 23 is disposed on the circuit board 21, and the optical filter 24 is attached to the lens holder 23. The lens fixing device 30 is fixedly disposed on the lens base 23 of the photosensitive assembly 20 according to the position of the identification element 14. The photosensitive element 22 of the photosensitive assembly 20 has a photosensitive imaging area 221 and a non-photosensitive imaging area 222, and the shape of the imaging surface 101 formed by the lens 10 is adapted to the shape of the photosensitive imaging area 221 by adjusting the relative position of the lens fixing device 30 and the photosensitive assembly 20.

It should be noted that the lens 10 forms the image forming surface 101 on the upper surface of the photosensitive element 22, wherein the size of the image forming surface 101 is slightly larger than the size of the photosensitive image forming area 221 of the photosensitive element 22, so as to fully utilize the photosensitive element 22 and reserve a certain adjustment margin.

It will be understood by those skilled in the art that at least one surface of the first lens unit 12 of the lens 10 is a free-form surface, i.e., the first lens unit 12 is a non-rotationally symmetric lens. Therefore, the image plane 101 formed by the first lens unit 12 is a non-circular area, that is, the lens 10 corrects the field curvature distortion of the camera module, and the area incident on the upper surface of the photosensitive element 22 is a non-rotationally symmetric shape. Since the lens barrel 11 of the lens 10 is rotationally symmetric, when the lens 10 is rotated, the imaging surface 101 formed on the photosensitive element 22 of the lens 10 rotates along with the rotation of the lens 10.

Preferably, in the preferred embodiment of the present invention, the imaging surface 101 formed by the lens 10 is a rectangular surface adapted to the shape of the photosensitive element 22, and it can be understood that the shape of the imaging surface 101 of the lens 10 is related to the optical characteristics of the first lens unit 12 of the lens 10, that is, the imaging surface 101 formed by the lens 10 is only taken as an example and is not limited by the skilled person. Therefore, in other embodiments of the present invention, the imaging plane 101 formed by the lens 10 may also be implemented in other shapes.

When the lens fixing device 30 and the photosensitive element 20 are debugged to be fixed, the position of the identification element 14 visually recognized identifies the relative position of the imaging surface 101 and the photosensitive imaging area 221 of the photosensitive element 22, and then the lens fixing device 30 is adjusted or the photosensitive element 20 is adjusted, so that the imaging surface 101 is adapted to the photosensitive imaging area 221 of the photosensitive element 22.

Specifically, during the assembly of the camera module, the photosensitive assembly 20 is lighted, wherein the photosensitive assembly 20 is fixed, and the position of the lens fixing device 30 relative to the photosensitive assembly 20 is adjusted and fixed; or the lens holder 30 is fixed, and the position of the photosensitive assembly 20 with respect to the lens holder 30 is adjusted and fixed. The assembly equipment visually recognizes the identification element 14 and determines the position and shape of the imaging surface 101 formed by the lens 10 according to the position of the identification element 14. In a state that the photosensitive assembly 20 is lighted, based on the position of the identification element 14, the relative positions of the photosensitive assembly 20 and the lens fixing device 30 are adjusted, so that the imaging surface 101 formed by the lens 10 covers the photosensitive imaging area 221 of the photosensitive element 22.

It should be noted that the first lens unit 12 of the lens 10 of the camera module is a non-rotational symmetric body. Therefore, during the debugging process, shift and title of the lens fixing device 30 or the photosensitive assembly 20, i.e. translation in the X-axis and Y-axis directions and tilt in the Z-axis direction, are required to make the optical axis of the lens 10 perpendicular to the photosensitive element 22, and the optical center of the lens 10 is located at the central position of the photosensitive imaging area 221. In addition, in the active focusing process, rotation needs to be considered, that is, the imaging surface 101 formed by the lens 10 is adapted to the shape of the photosensitive imaging area 221 of the photosensitive element 22, and the assembly equipment adjusts the photosensitive assembly 20 or the lens fixing device 30 to ensure that the imaging surface 101 formed by the lens 10 covers the photosensitive imaging area 221 of the photosensitive element 22.

When the imaging surface 101 formed by the lens 10 is rectangular, the long side of the imaging surface 101 corresponds to the long side of the photosensitive imaging area 221, and the short side of the imaging surface 101 corresponds to the short side of the photosensitive imaging area 221. Preferably, the lens 10 is fixed to the lens fixing device 30 in an orientation based on the visually recognizable identification element 14, and when the lens fixing device 30 is adjusted and installed with the photosensitive assembly 20, the imaging surface 101 formed by the lens 10 can be made to cover the photosensitive imaging area 221 of the photosensitive element 22.

As shown in fig. 2B, according to another aspect of the present invention, the camera module of the present invention can also be implemented as an auto-focusing-capable camera module, i.e., a camera module with a motor. Accordingly, the camera module comprises a lens 10, a photosensitive element 20, at least one motor 40 and a motor housing 50, wherein the lens 10 is connected to the motor 40 in a driving manner, and the motor 40 drives the lens 10 to move based on the motor housing 50 so as to adjust the focal position of the lens 10.

The lens 10 is locked to the motor housing 50 by the motor 40, and the lens 10 is fixed to the photosensitive element 20 by the motor housing 50. When the lens 10 is fixed to the motor housing 50, the lens 10 is directionally disposed to the motor housing by the motor 40 based on the position of the identification member 14. When the lens 10 is locked to the motor housing 50 in a high position and fixed to the photosensitive assembly 20 by the motor housing 50 based on the position adjustment of the identification element 14, the imaging surface 101 formed by the lens 10 covers the photosensitive imaging area 221 of the photosensitive element 22, and the motor housing 50 is adapted to the photosensitive assembly 20. In other words, when the image forming surface 101 covers the photosensitive image forming area 221, and the motor housing 50 is fixed to the photosensitive element 20, the fixed position of the motor housing 50 is adapted to the photosensitive element 20, so as to prevent the motor housing 50 and the circuit board 21 of the photosensitive element 20 from being misaligned, which results in poor appearance of the camera module.

Fig. 3 to 6 show an alternative embodiment of the lens 10 of the camera module according to the invention. The lens barrel 11 includes a barrel body 111 and a lens mounting cavity 112 formed in the barrel body 111, wherein the second lens unit 13 and the first lens unit 12 are fixed in the lens mounting cavity 112 by the barrel body 111. The marker 14 is provided on the barrel body 111 of the barrel 111, and the approximate position and shape of the imaging surface 101 formed by the lens 10 are determined by visually recognizing the position of the marker 14.

It is understood that the identification member 14 is integrally formed with the lens barrel body 111, wherein the first lens unit 12 and the second lens unit 13 are fixedly mounted to the lens mounting cavity 112 based on the position of the identification member 14, so that the approximate position and shape of the imaging surface 101 formed by the lens 10 are determined by the position of the identification member 14. As will be readily understood by those skilled in the art, after the first lens unit 12 and the second lens unit 13 are mounted in the lens mounting cavity 112 of the lens barrel 11, the identification member 14 is disposed on the barrel body 111 based on the imaging surface 101 formed by the lens barrel 10, so as to determine the approximate position and shape of the imaging surface 101 formed by the lens barrel 10 based on the visually recognized identification member 14.

The barrel body 111 of the lens barrel 11 further includes a barrel upper end 1111 and a barrel lower end 1112 integrally extending downward from the barrel upper end 1111, wherein the barrel upper end 1111 defines an upper end opening 1113 of the lens barrel 11, the barrel lower end 1112 defines a lower end opening 1114 of the lens barrel 11, wherein the lens mounting cavity 112 communicates with the upper end opening 1113 and the lower end opening 1114.

In this preferred embodiment of the present invention, the identification member 14 is provided to the barrel upper end portion 1111 of the barrel body 111, so that an assembling apparatus visually recognizes the position of the identification member 14 at the upper end of the barrel 11 to recognize the position and shape of the imaging surface 101 formed by the lens 10. Preferably, in the preferred embodiment of the present invention, the identification element 14 is implemented as a protrusion, wherein the identification element 14 is integrally formed at the barrel upper end 1111 of the barrel body 111.

The first lens unit 12 includes an effective diameter portion 121 and a structure portion 122, wherein the effective diameter portion 121 is located inside the structure portion 122, the external light reaches the image plane 101 through the effective diameter portion 121, and the external light reaches the outside of the image plane 101 through the structure portion 122. In short, the effective diameter portion 121 of the first lens unit 12 corresponds to a position of an area of the imaging surface 101 formed by the lens 10. Accordingly, the identification member 14 is used to identify the position and shape of the effective diameter portion 121 of the first lens unit 12. Exemplarily, in the preferred embodiment of the present invention, a projection of the effective diameter portion 121 of the first lens unit 12 in the optical axis direction is in a rectangular shape.

Preferably, the identification elements 14 are disposed at the upper end 1111 of the lens barrel, wherein at least one identification element 14 corresponds to a position of an intersection of the central axis surface of the long side or the short side of the effective diameter 121 of the first lens unit 12 and the lens barrel 111. It will be readily appreciated by those skilled in the art that the location and number of the identification elements 14 provided herein are merely exemplary and not limiting. That is, the vision system visually recognizes the position of the identification member 14 with respect to the barrel body 111 to determine the effective diameter portion 121 of the first lens unit 12, thereby determining the position and shape of the imaging surface 101. It is easily conceivable by those skilled in the art that the effective diameter portion 121 of the first lens unit 12 can be determined by arranging two or more of the identification members 14 at the position of the barrel body 111, thereby determining the position and shape of the imaging surface 101.

The identification element 14 protrudes from the barrel upper end 1111 of the barrel body 111, wherein the height of the identification element 14 is between 0.1 and 0.3 mm.

Fig. 7A to 7E referring to the drawings accompanying the present specification illustrate several alternative embodiments of the lens 10. As shown in fig. 7A, a lens 10A of the camera module according to the above preferred embodiment of the invention is explained in the following description. The lens 10A includes a lens barrel 11A, at least one first lens unit 12A, at least one second lens unit 13A, and at least one identification element 14A, wherein the at least one first lens unit 12A and the at least one second lens unit 13A are sequentially stacked on the lens barrel 11A, and the lens barrel 11A fixes the first lens unit 12A and the second lens unit 13A. Unlike the above preferred embodiment, the identification element 14A of the lens 10A, wherein the identification element 14A is disposed on the lens barrel 11A, whereby the identification element 14A determines the position and shape of an imaging plane 101 of the lens 10A.

The identification member 14A includes an identification body 141A and is further provided with at least one identification groove 142A, wherein the identification groove 142A is formed in the identification body 141A. The identification main body 141A of the identification member 14A is integrally molded with the lens barrel 11A. In the preferred embodiment of the present invention, the mark body 141A of the mark member 14A is of an integral structure with the lens barrel 11A, wherein the mark groove 142A is visually recognizable to determine the position and shape of an imaging surface 101 of the lens 10A based on the position of the mark groove 142A. Preferably, the depth of the identification groove 142A is between 0.1 and 0.3 mm.

As shown in fig. 7B, a lens 10B of the camera module according to the above preferred embodiment of the invention is explained in the following description. The lens 10B includes a lens barrel 11B, at least one first lens unit 12B, at least one second lens unit 13B, and at least one identification element 14B, wherein the at least one first lens unit 12B and the at least one second lens unit 13B are sequentially stacked on the lens barrel 11B, and the lens barrel 11B fixes the first lens unit 12B and the second lens unit 13B. Unlike the above preferred embodiment, the identification element 14B of the lens 10B is disposed on the lens barrel 11B, so that the identification element 14B determines the position and shape of an imaging plane 101 of the lens 10B.

The identification member 14B includes an identification body 141B and is further provided with at least one cut edge 142B, wherein the cut edge 142B is formed in the identification body 141B. The identification main body 141B of the identification member 14B is integrally molded with the lens barrel 11B. In the preferred embodiment of the present invention, the identification main body 141B of the identification member 14B is of an integral structure with the lens barrel 11B, wherein the cut edge 142B is visually recognizable to determine the position and shape of an imaging surface 101 of the lens 10B based on the position of the cut edge 142B. Preferably, the depth of the cut edge 142B is between 0.1 and 0.3 mm.

As shown in fig. 7C, a lens 10C of the camera module according to the above preferred embodiment of the invention is explained in the following description. The lens 10C includes a lens barrel 11C, at least one first lens unit 12C, at least one second lens unit 13C, and at least one identification element 14C, wherein the at least one first lens unit 12C and the at least one second lens unit 13C are sequentially stacked on the lens barrel 11C, and the lens barrel 11C fixes the first lens unit 12C and the second lens unit 13C. Unlike the above preferred embodiment, the identification element 14C of the lens 10C, wherein the identification element 14C is disposed on the lens barrel 11C, whereby the identification element 14C determines the position and shape of an imaging plane 101 of the lens 10C.

In this preferred embodiment of the present invention, the identification member 14C is implemented as an identification member attached to the lens barrel 11C. Preferably, the identification element 14C may be, but is not limited to, a coating, wherein the identification element is recognizable by a vision system to determine the position and shape of an imaging plane 101 of the lens 10C based on the position of the identification element 14C.

As shown in fig. 7D, a lens 10D according to another alternative embodiment of the camera module of the above preferred embodiment of the invention is illustrated in the following description. The lens 10D includes a lens barrel 11D, at least one first lens unit 12D, at least one second lens unit 13D, and at least one identification element 14D, wherein the at least one first lens unit 12D and the at least one second lens unit 13D are sequentially stacked on the lens barrel 11D, and the lens barrel 11D fixes the first lens unit 12D and the second lens unit 13D. Unlike the above preferred embodiment, the identification element 14D of the lens barrel 10D is disposed on the side of the lens barrel 11D, wherein the identification element 14D is disposed on the side of the lens barrel.

Specifically, the barrel body 111D of the barrel 11D further has a barrel outer side wall 1115D, wherein the identification element 14D is disposed on the barrel outer side wall 1115D, wherein the identification element 14D can be visually recognized, whereby the identification element 14D determines the position and shape of an imaging plane 101 of the lens 10D. It should be noted that, in the preferred embodiment of the present invention, the identification element 14D may be, but not limited to, a protrusion integrally formed on the lens barrel 11D, an identification element integrally formed on the lens barrel main body 111D and having a groove, or the identification element 14D is implemented as a coating layer attached to the lens barrel main body 111D and capable of being visually recognized.

As shown in fig. 7E, a lens 10E of another alternative implementation of the camera module according to the above preferred embodiment of the invention is illustrated in the following description. The lens 10E includes a lens barrel 11E, at least one first lens unit 12E, at least one second lens unit 13E, and at least one identification element 14E, wherein the at least one first lens unit 12E and the at least one second lens unit 13E are sequentially stacked on the lens barrel 11E, and the lens barrel 11E fixes the first lens unit 12E and the second lens unit 13E. Unlike the above preferred embodiment, the identification element 14E of the lens barrel 10E, wherein the identification element 14E is disposed at the bottom of the lens barrel 11E.

Specifically, the lens barrel 11E includes a barrel body 111E, wherein the barrel body 111E includes a barrel upper end portion 1111E and a barrel lower end portion 1112E integrally extending downward from the barrel upper end portion 1111E. The identification element 14E is provided at the barrel lower end 1112E. In the preferred embodiment of the present invention, the identification element 14E may be, but not limited to, a convex structure integrally formed with the lens barrel 11E, an identification element integrally formed with the lens barrel body 111E and having a groove, or the identification element 14E is implemented as a coating layer that is attached to the lens barrel body 111E and can be visually recognized.

In accordance with another aspect of the present invention, the present invention further provides a method for manufacturing the lens barrel 10, wherein the method comprises the steps of:

(a) arranging at least one identification element 14 on a lens barrel 11;

(b) assembling at least one first lens unit 12 and at least one second lens unit 13 in a lens barrel, wherein the first lens unit 12 includes an effective diameter portion 121 and a structural portion 122; and

(c) adjusting the position of the at least one first lens unit 12 to a specific position of the identification element 14 based on the position of the identification element 14, whereby the identification element 14 marks the effective diameter 121 of the first lens unit 12.

In the step (a) of the above-described lens manufacturing method of the present invention, the identification member 14 is formed on a barrel body 111 of the lens barrel 11, and the identification member 14 is a projection integrally formed on the barrel body 111.

In the step (a) of the above-described lens manufacturing method of the present invention, the identification member 14 is formed on a barrel body 111 of the barrel 11, and the identification member 14 includes an identification body 141 and an identification groove 142 formed on the identification body 141.

In the step (a) of the above-described lens manufacturing method of the present invention, the identification member 14 is provided at a barrel upper end portion 1111 of the barrel body 111, and the position and shape of the imaging surface 101 of the lens 10 are recognized by visually recognizing the identification member 14.

In the step (a) of the method for manufacturing a lens according to the present invention, the identification element 14 is provided at a barrel lower end 1112 of the barrel body 111, and the position and shape of the imaging surface 101 of the lens 10 are recognized by visually recognizing the identification element 14.

(I) assembling at least one first lens unit 12 and at least one second lens unit 13 on a lens barrel 11, wherein the first lens unit 12 includes an effective diameter portion 121 and a structural portion 122, wherein the structural portion 122 extends outwardly from the effective diameter portion 121; and

(II) recognizing an imaging plane 101 formed by the lens 10, and providing at least one identification member 14 based on a position of the imaging plane 101 at a specific position from the effective diameter portion 121 of the lens barrel 11 to determine a position and a shape of the imaging plane 101 by visually recognizing the identification member 14.

It should be noted that in the preferred manufacturing method of the present invention, the arrangement of the identification element 14 and the structure of the identification element 14 are the same as those of the above-described preferred embodiment.

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

1. A lens barrel, comprising:

a lens barrel;

at least one identification element, wherein the identification element is disposed on the lens barrel, and the identification element positions the first lens unit;

wherein the first lens unit includes an effective diameter portion and a structural portion, wherein the structural portion extends outwardly from the effective diameter portion, and the identification element is disposed on the lens barrel corresponding to a specific position away from the effective diameter portion based on the effective diameter portion of the first lens unit, whereby the identification element marks the position and direction of the effective diameter portion; alternatively, the first lens unit includes an effective diameter portion and a structural portion, wherein the structural portion extends outwardly from the effective diameter portion, and the first lens unit is adjusted based on the position of the identification element such that the effective diameter portion of the first lens unit is located at a specific position from the identification element, whereby the identification element marks the effective diameter portion.

2. The lens barrel as claimed in claim 1, wherein the identification member has a fixed preset angle with the first lens unit so as to determine a position and an angle of the first lens unit according to the identification member.

3. The lens barrel according to claim 1, wherein the identification member is integrally provided to the lens barrel, the identification member being a convex structure.

4. The lens barrel as claimed in claim 1, wherein the identification member further includes an identification body integrally formed with the lens barrel and further provided with at least one identification groove formed in the identification body to identify the identification member by visually recognizing the identification groove.

5. The lens barrel according to claim 1, wherein the identification member further includes an identification main body integrally formed with the lens barrel and is further provided with at least one cut edge, wherein the cut edge is formed in the identification main body to identify the identification member by visually recognizing the cut edge.

6. The lens barrel according to claim 1, wherein the identification member is a coating layer, the identification member being attached to the lens barrel.

7. The lens barrel according to claim 2, wherein the lens barrel further includes a barrel main body and a lens mounting cavity, wherein the first lens unit and the second lens unit are fixed to the lens mounting cavity by the barrel main body, the barrel main body further includes a barrel upper end portion and a barrel lower end portion, wherein the identification member is provided at the barrel upper end portion of the barrel main body.

8. The lens barrel according to claim 2, wherein the lens barrel further includes a barrel main body and a lens mounting cavity, wherein the first lens unit and the second lens unit are fixed to the lens mounting cavity by the barrel main body, the barrel main body further includes a barrel upper end portion and a barrel lower end portion, wherein the identification member is provided at the barrel lower end portion of the barrel main body.

9. The lens barrel according to claim 2, wherein the barrel body of the barrel has a barrel outer side wall, wherein the identification element is disposed on the barrel outer side wall of the barrel body.

10. A camera module, comprising:

a photosensitive assembly; and

a lens barrel;

at least one identification element, wherein the identification element is disposed on the lens barrel, and the identification element is used for positioning the first lens unit;

11. The camera module of claim 10, wherein the photosensitive assembly comprises a circuit board, a photosensitive element, wherein the photosensitive element is conductively disposed on the circuit board, and wherein the lens is disposed on a photosensitive path of the photosensitive element.

12. The camera module of claim 11, wherein the first lens unit and the second lens unit form an image plane on an upper surface of the photosensitive element, and the mounting position of the lens and the photosensitive assembly is adjusted based on the position and angle of the image plane.

13. The camera module according to claim 12, further comprising a lens holder, wherein the barrel of the lens is fixed to the lens holder in an oriented manner based on the position of the identification element, the position of the identification element identified by visual recognition identifies the position of the imaging surface relative to the photosensitive imaging area of the photosensitive element, and the lens holder is adjusted to fit the imaging surface to the photosensitive imaging area of the photosensitive element.

14. The camera module of claim 12, further comprising a motor and a motor housing, wherein the orientation of the identification element of the lens barrel and the orientation of the housing of the motor have a fixed predetermined angle.

15. A method for manufacturing a lens, wherein the method comprises the steps of:

(a) arranging at least one identification element on a lens barrel;

(b) assembling at least one first lens unit and at least one second lens unit in a lens barrel, wherein the first lens unit comprises an effective radial part and a structural part, the structural part extends outwards from the effective radial part, the identification element is arranged on the lens barrel corresponding to a specific position away from the effective radial part, and the identification element marks the position and the direction of the effective radial part; or the structural portion extends outwardly from the effective diameter portion, adjusting the first lens unit based on the position of the identification element such that the effective diameter portion of the first lens unit is located at a specific position from the identification element, whereby the identification element marks the effective diameter portion; and

16. The manufacturing method according to claim 15, wherein in the step (a), the identification member is formed in a barrel body of the barrel, and the identification member is a projection integrally formed in the barrel body.

17. The manufacturing method according to claim 15, wherein in the step (a), the identification member is formed on a barrel body of the barrel, and the identification member includes an identification body and an identification groove formed on the identification body.

18. The manufacturing method according to claim 15, wherein in the step (a), the identification member is provided at a barrel upper end portion of the barrel body.

19. The manufacturing method according to claim 15, wherein in the step (a), the identification member is provided at a barrel lower end portion of the barrel body.