TW201907219A - Fixed-focus camera module, and focusing device and focusing method thereof to adjust the relative position between the optical lens and the lens holder through a lens holding device based on the test image until the pre-assembled camera module outputs the desired clear image - Google Patents

Abstract

The invention provides a fixed-focus camera module, a manufacturing method thereof, a focusing device, and a focusing method, wherein in the focusing method, an optical lens is pre-assembled on a lens holder, wherein the optical lens is exposed outside the lens holder. The optical lens is located in a photosensitive path of a photosensitive element assembled on a circuit board to form a pre-assembled camera module; the pre-assembled camera module performs a shooting operation to obtain a test image. Based on the test image, the relative position between the optical lens and the lens holder is adjusted through a lens holding device until the pre-assembled camera module outputs the desired clear image; and the optical lens and the lens holder are fixed to complete the focusing operation and obtain a fixed-focus camera module that is assembled.

Description

 Fixed focus camera module, focusing device thereof and focusing method  

The invention relates to the field of optical imaging, in particular to a fixed focus camera module, a manufacturing method thereof and a focusing method.

With the rapid development of science and technology and the continuous improvement of people's economic standards, portable electronic devices such as smart phones and tablet computers and related technologies have been rapidly developed. Among them, camera modules for illustrating user images are displayed. It has become one of the standard configurations of portable electronic devices. Generally, in order to facilitate a user to take a self-portrait or a video call through a portable electronic device, the portable electronic device is configured with a front camera module. Since the fixed focus camera module does not need to reserve space for focusing after being configured in the portable electronic device, the fixed focus camera module becomes a portable electronic device in order to control the size of the portable electronic device. The device's front camera module is preferred.

In recent years, portable electronic devices have become more and more intelligent, thin and light. The development trend of portable electronic devices requires the addition of smart components to make portable electronic devices more More powerful functions, on the other hand, require reducing the size of the various components of the portable electronic device to control the size of the portable electronic device. This development trend of the portable electronic device is especially proposed for the size of the fixed focus camera module. Demanding requirements. Although the fixed-focus camera module does not need to reserve space for focusing after being configured in the portable electronic device, it still needs to be adjusted in the process of packaging the fixed-focus camera module to ensure fixed focus imaging. The imaging quality of the module.

1 is a prior art fixed focus camera module including a photosensitive element 10P, an optical lens 20P, and a base 3P, wherein the base 3P includes a base body 33P and a lens barrel 34P. The lens barrel 34P integrally extends to the base body 33P, wherein the photosensitive element 10P is disposed on the base body 33P, and the optical lens 20P is disposed on the lens barrel 34P such that the optical lens 20P is located The photosensitive path of the photosensitive element 10P. In the prior art fixed focus camera module, the optical lens 20P is fixed by the lens barrel 34P and the optical lens 20P is held at a position after focusing. The arrangement of the lens barrel 34P limits the size of the fixed focus camera module, and even becomes a technical bottleneck restricting the development of the fixed focus camera module. In addition, since the optical lens 20P is mounted inside the lens barrel 34P, the optical lens 20P and the lens barrel 34P are mounted or the position of the optical lens 20P relative to the lens barrel 34P is adjusted. In order to achieve focusing of the fixed focus camera module, the outer surface of the optical lens 20P and the inner surface of the lens barrel 34P may cause the outer surface of the optical lens 20P and the mirror due to mutual friction. The inner surface of the cylinder 34P generates some particles and other contaminants, and the particles and the like are retained inside the fixed focus camera module, and even after the fixed focus camera module is packaged, the particles cannot be contaminated. The object is taken out, and as time passes and the external focus of the fixed focus camera module is received, a part of particles and the like may enter the optical path of the optical lens 20P, and may be imaged on the photosensitive element 10P, so that The travel that causes the dirty spot causes the imaging quality of the fixed focus camera module to decrease.

An object of the present invention is to provide a fixed focus camera module, a manufacturing method thereof, a focusing device and a focusing method, wherein the size of the fixed focus camera module can be effectively reduced, so that the fixed focus camera module It is particularly suitable for use in electronic devices that are intended to be thin and light.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, a focusing device, and a focusing method, wherein the optical lens of the fixed focus camera module is directly packaged in the lens holder, so that the fixed focus camera mode The group does not need to provide a lens barrel to fix the optical lens and the lens holder, that is, there is no need to provide a lens barrel around the optical lens, so that the head size of the fixed focus camera module can be reduced.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the optical lens is directly packaged on the lens holder and exposed outside the lens holder to enable Effectively reducing the height dimension of the camera module.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the focusing device includes a focusing mechanism, and the focusing mechanism can pass through the optical lens The position of the peripheral lens is adjusted to adjust the position of the optical lens relative to the photosensitive element of the fixed focus camera module to ensure the imaging quality of the fixed focus camera module.

An object of the present invention is to provide a fixed focus camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein a glue layer is formed between the optical lens and the lens holder for using the optical A lens is packaged in the lens holder.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the bonding layer is used to close a joint between the optical lens and the lens holder to prevent borrowing During the process of performing focusing on the fixed focus camera module by the focusing device, solid particle contaminants generated on the outer surface of the optical lens pass through the connection between the optical lens and the lens holder. It is stated that the outside of the focus camera module enters the inside.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the bonding layer is used to close a gap between the optical lens and the lens holder to prevent external Contaminants or light rays enter the interior from the outside of the fixed focus camera module through the junction of the optical lens and the lens holder.

An object of the present invention is to provide a fixed-focus camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the bonding layer is used to improve the flatness of the optical lens and the lens holder, so that the The central axis of the optical lens coincides with the central axis of the lens holder to ensure the imaging quality of the fixed focus camera module.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, a focusing device and a focusing method, wherein the optical lens assembly is packaged, and the optical lens is packaged The lens is in a bare state, which is convenient for cleaning, so that the solid particle pollutants attached to the outside of the fixed focus camera module can be removed by cleaning the fixed focus camera module, thereby reducing the stain of the camera module. Probability.

An object of the present invention is to provide a fixed focus camera module, a manufacturing method thereof, a focusing device and a focusing method, wherein the fixed focus camera module does not need to provide a lens barrel, and in this way, the fixed focus can be reduced. The raw material cost and technical difficulty of the camera module are to improve the product competitiveness of the fixed focus camera module.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein a top end of the lens holder provides an inner groove for accommodating a filter element, thereby reducing the The height of the fixed focus camera module.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the lens holder provides an outer groove for encapsulating the optical lens with the glue layer, thereby Lowering the height of the fixed focus camera module.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the focusing device provides a computing device, and the computing device passes the analysis of the fixed focus camera module The acquired image can perform a focusing operation on the fixed focus camera module.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the computing device can generate a focusing signal after analyzing the image acquired by the fixed focus camera module. Performing the focusing signal by the focusing mechanism to perform a focusing operation on the fixed focus camera module by changing a relative position of the optical lens and the photosensitive element.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein after the focusing device performs a focusing operation on the focusing camera module, the adhesive is applied The fixing is performed such that the optical lens is held in a position after focusing, thereby forming the fixed focus camera module.

An object of the present invention is to provide a fixed focus camera module, a manufacturing method thereof, a focusing device and a focusing method, wherein the fixed focus camera module comprises a photosensitive component and the lens, and the lens is directly mounted on the lens The photosensitive element is mounted instead of through a lens barrel.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the photosensitive element comprises an integral base and the circuit board, and the integral base is integrally formed on the A circuit board, the lens being directly disposed on the integrated base.

An object of the present invention is to provide a fixed-focus camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the integrated base is integrally formed on the circuit board and the at least a portion of the photosensitive elements.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, a focusing device and a focusing method, wherein the photosensitive element comprises a seat, the holder is disposed on the integrated base, and the filter A light element is mounted to the mount.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the optical lens includes at least two group units, at least one of which is directly disposed on The mirror mount.

An object of the present invention is to provide a fixed-focus camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein at least one of the group units of the optical group unit is directly mounted to the integrated base .

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein each of the group units is exposed to the outside of the lens holder or the integrated base to facilitate adjustment operation.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein each of the group units is exposed outside the mirror base or the integrated base, so that the group Group units can all be adjusted to a wider range of adjustments than to limit the group unit at the top.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, a focusing device and a focusing method, wherein a plurality of group units are adjusted to form a fixed focus camera module, and the lens lens accumulation error is reduced, which is suitable for manufacturing. Multi-lens fixed-focus camera module.

An object of the present invention is to provide a telephoto camera module, a manufacturing method thereof, and a focusing device and a focusing method, wherein the focusing mechanism can directly adjust each of the group units a plurality of times, thereby improving the The imaging quality of the fixed focus camera module.

According to the present invention, a focusing method of a certain focus camera module capable of achieving the foregoing and other objects and advantages includes the following steps: (A) pre-assembling an optical lens to a lens holder, wherein the optical lens is exposed at Outside the lens holder, the optical lens is located in a photosensitive path of a photosensitive element assembled on a circuit board to form a pre-assembled camera module; (B) the pre-assembled camera module performs a shooting operation to Obtaining a test image; (C) adjusting a relative position between the optical lens and the lens holder by a lens holding device based on the test image until the pre-assembled camera module outputs a clear image required And (D) fixing the optical lens and the lens holder to complete a focusing operation and obtaining a fixed-focus camera module that is assembled.

In some embodiments, a glue is dispensed between the optical lens and the lens mount, and after determining the position of the optical lens and the lens mount, the glue is cured to be at the optical lens and the lens mount A sealed glue layer is formed between them.

According to another aspect of the present invention, the present invention provides a focusing device for performing a focusing operation on a pre-assembled camera module, wherein the pre-assembled camera module includes a circuit board assembled in the a photosensitive element of the circuit board disposed on a lens holder of the circuit board and an optical lens pre-assembled on the lens holder, wherein the optical lens is exposed outside the lens holder, and the optical lens is located at a photosensitive path of the photosensitive element, wherein the focusing device comprises: a computing device connected to the pre-assembled camera module to obtain image information captured by the pre-assembled camera module; and a focus adjustment The mechanism, wherein the focusing mechanism comprises a lens holding device and a photosensitive element fixing device, the lens holding device holding the optical lens on a top side of the lens holder of the pre-assembled camera module, The photosensitive element fixing device is configured to directly or indirectly hold the lens holder, wherein the computing device adjusts the image information by analyzing the image information captured by the pre-assembled camera module The relative position of the optical lens and the lens holder, thereby adjusting the relative position of said optical lens and said photosensitive wafer so that a clear image of the pre-assembled camera module output required to complete the focusing operation.

There is no need to provide any components around the optical lens of the fixed focus camera module of the present invention, so that the fixed focus camera module can be reduced by reducing the size of the head of the fixed focus camera module. Dimensions, when the fixed focus camera module is applied to an electronic device, the size of the fixed focus camera module can leave more space for other components of the electronic device, thereby enabling the Electronic devices can meet the trend of smart, thin and light.

The focusing device of the present invention is configured to perform a focusing operation on the fixed focus camera module during the process of packaging the fixed focus camera module to ensure the imaging quality of the fixed focus camera module. In the process of encapsulating the fixed focus camera module, the optical lens and the photosensitive element packaged in the lens holder are first held at an approximate position to capture an image through the fixed focus camera module, for example, Taking an image of a test plate by the fixed focus camera module, and second, the computing device generates a focus signal by analyzing the image, and the focus mechanism passes the focus signal based on the focus signal The lens holding device and the photosensitive element holding device change a relative position of the optical lens and the photosensitive element to complete a focusing operation of the fixed focus camera module. It is worth mentioning that the focus signal comprises a deviation angle and a displacement of the optical lens and the photosensitive element, for example, the focus signal comprises the flatness and distance of the optical lens and the photosensitive element. The magnitude that should be adjusted, etc.

The focusing mechanism can fix the optical lens on the outer circumferential side of the optical lens, and remove the original structure of the base and the lens, that is, the lens barrel, to ensure that the optical lens is accurately imaged and corresponding to the photosensitive element, and finally The camera module is caused to output a clear image. In addition, the focusing mechanism fixes the optical lens on the outer circumferential side of the optical lens, which is beneficial to reducing the technical difficulty and cost when performing the focusing operation on the fixed focus camera module. Further, the glue layer disposed or formed between the optical lens and the lens holder is used to close a gap between the optical lens and the lens holder to prevent solid particle contaminants from passing through The connection between the optical lens and the lens holder enters the interior from the outside of the fixed focus camera module, thereby facilitating improvement of the imaging quality of the fixed focus camera module.

10P‧‧‧Photosensitive element

20P‧‧‧ optical lens

3P‧‧‧Base

33P‧‧‧Base body

34P‧‧·Mirror tube

10‧‧‧Photosensitive elements

11‧‧‧Connecting line

20‧‧‧Optical lens

30‧‧‧Mirror seat

301‧‧‧Lighting hole

302‧‧‧Top

31‧‧‧ inside groove

32‧‧‧Outer groove

3000‧‧‧Integrated base

3001‧‧‧Molding body

3002‧‧‧light window

3003‧‧‧first groove

3004‧‧‧second groove

40‧‧‧Glued layer

50‧‧‧ circuit board

51‧‧‧ Circuit components

60‧‧‧ Filter elements

61‧‧‧Support

70‧‧‧ Computing equipment

71‧‧‧ receiving module

72‧‧‧Analysis module

73‧‧‧Data generation module

80‧‧‧ Focusing mechanism

81‧‧‧ lens holding device

811‧‧‧Inner sleeve

812‧‧‧ outer bracket

82‧‧‧Photosensitive element holding device

83‧‧‧Multi-axis adjustment platform

90‧‧‧Multi-group lens

9010‧‧‧Group unit

9011‧‧‧Upper group unit

90111‧‧‧Upper lens

90112‧‧‧Upper load bearing parts

901121‧‧‧Upper host

9011211‧‧‧Bottom sleeve end

901122‧‧‧Extension wall

9012‧‧‧Under group unit

90121‧‧‧Lower lens

90122‧‧‧ lower load bearing parts

901221‧‧‧ under the host

901222‧‧‧Upper end

100‧‧‧Photosensitive components

800‧‧‧Focus focusing method for fixed focus camera module

810‧‧‧Steps for pre-assembling the optical lens

820‧‧‧Steps for obtaining test images

830‧‧•focusing step

840‧‧‧Steps to complete module assembly

1100‧‧‧Method of adjusting the relative position between the photosensitive elements of an optical lens

1110‧‧‧Steps

1120‧‧‧Steps

900‧‧‧Focus focusing method for fixed focus camera module

910‧‧‧Steps for pre-assembling optical lenses

920‧‧‧Steps for obtaining test images

930‧‧•focusing step

940‧‧‧Steps to complete module assembly

2100‧‧‧How to adjust the relative position between the photosensitive elements of the optical lens

2110‧‧‧Steps

2120‧‧‧Steps

Figure 1 is an exploded perspective view of the prior art.

2 is a perspective view of a fixed focus camera module in accordance with a preferred embodiment of the present invention.

3 is a cross-sectional view of a fixed focus camera module in accordance with the above preferred embodiment of the present invention.

4 is a cross-sectional view showing a modified embodiment of a fixed focus camera module according to the above preferred embodiment of the present invention.

FIG. 5A is a cross-sectional view showing another modified embodiment of the fixed focus camera module according to the above preferred embodiment of the present invention.

FIG. 5B is a cross-sectional view showing still another modified embodiment of the fixed focus camera module according to the above preferred embodiment of the present invention.

Figure 6 is a block diagram showing a focus adjusting device in accordance with the above preferred embodiment of the present invention.

FIG. 7 is a schematic diagram of a focusing process of a focusing camera module by a lens holding device according to the above preferred embodiment of the present invention.

FIG. 8 is a cross-sectional view showing the focusing process of the focusing device of the focusing device according to the above preferred embodiment of the present invention.

9 is a schematic diagram of a focusing process of a focusing device of a focusing device according to the above preferred embodiment of the present invention.

FIG. 10 is a flow chart showing the focusing process of the focusing device of the focusing device according to the above preferred embodiment of the present invention.

11 is a block diagram showing a process of adjusting an optical lens position of a fixed focus camera module according to the above preferred embodiment of the present invention.

12A is a cross-sectional view of a fixed focus camera module in accordance with a second preferred embodiment of the present invention.

12B is a cross-sectional view showing a modified embodiment of a fixed focus camera module according to a second preferred embodiment of the present invention.

FIG. 13 is a cross-sectional view showing a first modified embodiment of a fixed focus camera module according to a second preferred embodiment of the present invention.

FIG. 14 is a cross-sectional view showing a second modified embodiment of a fixed focus camera module according to a second preferred embodiment of the present invention.

Figure 15 is a cross-sectional view showing a fixed focus camera module in accordance with a third preferred embodiment of the present invention.

15B is a schematic cross-sectional view showing a modified embodiment of a fixed focus camera module according to a third preferred embodiment of the present invention.

Figure 16 is a cross-sectional view showing a fixed focus camera module in accordance with a fourth preferred embodiment of the present invention.

Figure 17 is a cross-sectional view showing a modified embodiment of a fixed focus camera module in accordance with a fourth preferred embodiment of the present invention.

Figure 18 is a cross-sectional view showing a fixed focus camera module in accordance with a fifth preferred embodiment of the present invention.

19 is a schematic diagram of an upper group unit of a multi-group lens of a fixed focus camera module according to a fifth preferred embodiment of the present invention.

20 is a schematic diagram of a lower group unit of a multi-group lens of a fixed focus camera module according to a fifth preferred embodiment of the present invention.

Figure 21 is a partial enlarged view of Figure 18.

Figure 22 is a schematic view showing the assembly process of a fixed focus camera module according to a fifth embodiment of the present invention.

23 is a schematic view showing another assembly process of the fixed focus camera module according to the fifth embodiment of the present invention.

Figure 24 is a cross-sectional view showing a fixed focus camera module in accordance with a sixth preferred embodiment of the present invention.

FIG. 25 is a schematic diagram of another focusing process of the fixed focus camera module according to the above embodiment of the present invention.

FIG. 26 is a block diagram showing another process of adjusting the position of the optical lens of the fixed focus camera module according to the above embodiment of the present invention.

The following description is presented to disclose the invention to enable those skilled in the art to practice the invention. The preferred embodiments in the following description are 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, modifications, improvements, equivalents, and other embodiments without departing from the spirit and scope of the invention.

Referring to FIG. 2 and FIG. 3 of the accompanying drawings of the present invention, a fixed focus camera module according to a preferred embodiment of the present invention is illustrated, wherein the fixed focus camera module includes a photosensitive element 10 and an optical lens 20 And a lens holder 30, a light-passing hole 301 is formed in the center of the lens holder 30, wherein the optical lens 20 is directly packaged at the top end 302 of the lens holder 30, and the optical lens 20 is held at the photosensitive Photosensitive path 20 of element 10. Light reflected by the object can enter the interior of the fixed focus camera module from the optical lens 20 and be received and photoelectrically converted by the photosensitive element 10 to generate an image associated with the object (eg, an image or video) ).

It is worth mentioning that in the fixed focus camera module of the present invention, the type of the photosensitive element 10 and the type of the optical lens 20 are not limited. For example, in an exemplary description, the photosensitive element 10 may be a Charge Coupled Device (CCD), or the photosensitive element 10 may be a Metal Oxide Semiconductor (CMOS). Alternatively, the photosensitive element 10 may be a photonics wafer. That is, in the fixed focus camera module of the present invention, the photosensitive element 10 refers to any optical element capable of photoelectric conversion after receiving light reflected by an object. Correspondingly, the optical lens 20 refers to any optical element capable of allowing light reflected by the object to enter the interior from the outside of the fixed focus camera module and improve the quality of the light.

In the fixed focus camera module of the present invention, the optical lens 20 is directly packaged in the lens holder 30. In other words, the fixed-focus camera module of the present invention does not need to provide a prior art lens barrel structure. In this manner, the volume of the fixed-focus camera module around the optical lens 20 can be reduced. When the fixed focus camera module is mounted on an electronic device, the fixed focus camera module can occupy the space of the electronic device as little as possible, thereby enabling the electronic device to leave more space. For the installation of other components. In a specific example, a space of at least 0.2 mm can be saved in any direction around the optical lens 20, that is, the head of the fixed focus camera module (ie, the optical lens 20 and The surrounding area can save at least 0.4 mm of space, which is of great significance for the fixed focus camera module to be applied to the electronic device that is smart, thin and thin.

In addition, the fixed-focus camera module of the present invention does not need to provide the prior art lens barrel structure, but directly encapsulates the optical lens 20 on the top end 302 of the lens holder 30, and the optical lens 20 is convex outward. In this way, the use of the raw material can be reduced to reduce the cost of the fixed focus camera module, thereby improving the product competitiveness of the fixed focus camera module. That is, the optical lens 20 is substantially exposed to the outside of the lens holder 30, thereby sizing the lens end of the camera module.

In the process of encapsulating the fixed focus camera module of the present invention, the optical lens 20 is adjusted relative to the photosensitive element by means of a focusing mechanism that fixes the optical lens 20 outside the optical lens 20 10 position to improve the imaging quality of the fixed focus camera module. Therefore, in this process, even if the focusing mechanism causes the optical lens 20 to generate contaminants such as solid particles, the solid particles and the like do not enter the interior of the fixed focus camera module. The contaminants such as the solid particles are prevented from being contaminated, thereby ensuring the imaging quality of the fixed focus camera module. After the contaminants such as the solid particles are generated, the contaminants such as the solid particles adhere to at least the outer surface of the fixed focus camera module, and after the fixed focus camera module is packaged, the cleaning can be removed by cleaning. Contaminants such as solid particles attached to the outer surface of the fixed focus camera module to ensure the image quality of the fixed focus camera module during use in the electronic device.

Further, as shown in FIG. 3, the fixed focus camera module includes a glue layer 40, wherein the glue layer 40 is located between the optical lens 20 and the lens holder 30 for using the optical lens 20 Directly encapsulated at the top end 302 of the mirror mount 30. It is worth mentioning that the glue layer 40 can not only connect the optical lens 20 and the lens holder 30, but the glue layer 40 can also be used to sealingly connect the optical lens 20 and the lens holder 30. So that the contaminants such as solid particles or external pollutants or external light are prevented from entering the fixed focus camera module from the outside of the fixed focus camera module through the connection between the optical lens 20 and the lens holder 30. Internally, to ensure the imaging quality of the fixed focus camera module.

In one embodiment of the fixed focus camera module, the glue layer 40 may be separately formed to subsequently place the glue layer 40 between the optical lens 20 and the lens holder 30. Preferably, the glue layer 40 may be semi-solidified so that the glue layer 40 has a viscosity and the thickness of the glue layer 40 at any one position can be adjusted, and the glue layer 40 is disposed at the After the optical lens 20 and the lens holder 30 are between the focus and the focusing of the fixed focus camera module is completed, the glue layer 40 can be cured to ensure the optical lens 20 by the glue layer 40. It is kept in the position after being adjusted.

In another embodiment of the fixed focus camera module, the glue layer 40 is formed between the optical lens 20 and the lens holder 30. Specifically, selectively dispensing at a corresponding position of at least one of the optical lens 20 and the lens holder 30, and mounting the lower end surface of the optical lens 20 to the mirror after the dispensing operation is completed a seat 30 for placing glue between the optical lens 20 and the lens holder 30, and focusing the fixed focus camera module, which can be fixed on the outside of the optical lens 20 when focusing The optical mirror 20 is operated in such a manner that after the focusing is completed, the glue is solidified to form the glue layer 40 between the optical lens 20 and the lens holder 30. Preferably, dispensing can be performed only at the corresponding position of the lens holder 30 to prevent glue from contaminating the optical lens 20. More preferably, the glue can be cured by irradiation of ultraviolet light (Ultraviolet Rays, UV light).

It is worth mentioning that after the dispensing operation is completed at the corresponding position of the lens holder 30, the glue may be semi-cured to prevent the glue from being glued in the process of encapsulating the optical lens 20 in the lens holder 30. The optical lens 20 causes contamination. In other words, after the glue is applied to the lens holder 30 by dispensing, the glue may be semi-cured to make the semi-cured glue have viscosity and plasticity at the lower end of the optical lens 20. After the lens holder 30 is mounted and the focus adjustment of the fixed focus camera module is completed, the glue is completely cured to form the glue layer 40 between the optical lens 20 and the lens holder 30. Thus, on the one hand, the glue layer 40 keeps the optical lens 20 in a position after focusing, and on the other hand the glue layer 40 closes the joint of the optical lens 20 and the mirror holder 30. Of course, it is also possible to completely cure the glue after the dispensing operation and the determination of the positions of the optical lens 20 and the lens holder 30, that is, it is not necessary to perform the focusing operation in the semi-cured state.

In the process of encapsulating the fixed focus camera module of the present invention, the glue layer 40 can improve the alignment degree of the optical lens 20 and the lens holder 30, so that the central axis of the optical lens 20 can be It coincides with the central axis of the photosensitive element 10 to improve the imaging quality of the fixed focus camera module. That is, the glue layer 40 can compensate for the product error of the optical lens 20 and the product error of the lens holder 30 and the mounting error of the optical lens 20 and the lens holder 30, thereby improving the setting. The imaging quality of the focal camera module.

Referring to FIG. 2 and FIG. 3, the fixed focus camera module further includes a circuit board 50, wherein the photosensitive element 10 is mounted on the circuit board 50, and the lens holder 30 is disposed on the circuit board 50. The optical lens 20 and the photosensitive element 10 are positioned to correspond to each other. Preferably, the circuit board 50 may be a printed circuit board (Printed Circuit Board), wherein the circuit board 50 can maintain the printed circuit board 10 after being mounted on the circuit board 50. The flatness of the photosensitive member 10. However, it will be understood by those skilled in the art that the circuit board 50 can also be any structure capable of connecting the photosensitive element 10 and other components of the electronic device, for example, the circuit board 50 can be an FPC circuit board. (Flexible Printed Circuit), specifically, the wiring board 50 implemented as an FPC wiring board may be attached to a reinforcing member (for example, a metal reinforcing member), and then the photosensitive member is attached 10 is attached to the reinforcing member, and the photosensitive member 10 is attached to the wiring board 50 to ensure the flatness of the photosensitive member 10 by the reinforcing member.

In the fixed focus camera module of the present invention, the photosensitive element 10 may be first fixed to the circuit board 50, and then the photosensitive element 10 and the circuit board 50 are connected by a wire bonding process to The photosensitive member 10 is attached to the wiring board 50. It can be understood that the connection of the photosensitive element 10 and the wiring board 50 by way of gold wire is only an exemplary description. In other examples, the photosensitive element 10 can provide one or more wafer bonding. The circuit board 50 can provide one or more circuit board pads, and can also be realized by soldering the die pads of the photosensitive element 10 and the circuit board pads of the circuit board 50 together. The mounting of the photosensitive element 10 and the wiring board 50 is described. The photosensitive element 10 can be assembled to the wiring board 50 by a COB (Chip on Board) method or an FC (Flip Chip) flip chip method.

In addition, the fixed focus camera module further includes a filter element 60, wherein the filter element 60 is disposed between the photosensitive element 10 and the optical lens 20 for improving the fixed focus camera. The imaging quality of the module. Light reflected by the object enters the interior of the fixed focus camera module from the optical lens 20, and is further filtered by the photosensitive element 10 and photoelectrically converted after being filtered by the filter element 60 to generate an object. Associated image. That is, the filter element 60 can filter the stray light in the light reflected by the object from the optical lens 20 into the inside of the fixed focus camera module to improve the imaging of the fixed focus camera module. quality.

It is worth mentioning that the type of the filter element 60 is not limited. For example, in one example of the present invention, the filter element 60 may be an infrared cut filter to filter into the fixed focus camera mode. The infrared rays in the light reflected by the object inside the group. In another example of the present invention, the filter element 60 may also be a visible light cut filter. In addition, the filter element 60 can also be adjusted. For example, the filter element 60 can be movably disposed on the lens holder 30 to make the fixed focus by changing the position of the filter element 60. Camera modules are used in different environments.

Referring to FIG. 3, the filter element 60 is packaged inside the lens holder 30 such that the filter element 60 is held between the optical lens 20 and the photosensitive element 10. For example, the filter element 60 may be first packaged inside the lens holder 30, and then the circuit board 50 may be packaged in the lens holder 30.

Referring to FIG. 3, the inside of the top end 302 of the lens holder 30 is provided with an inner groove 31, wherein the filter element 60 is encapsulated in the inner groove 31 of the lens holder 30. In this way, The height of the fixed focus camera module is effectively reduced, so that the fixed focus camera module is particularly suitable for being applied to the electronic device that seeks to be thin and light. In addition, an outer groove 32 is disposed on the outer surface of the lens holder 30. In one example, the optical lens 20 is directly encapsulated in the outer groove 32 of the lens holder 30 through the glue layer 40. In another example, only the glue layer 40 may be located in the outer groove 32 of the lens holder 30. In this way, the height of the fixed focus camera module can be further effectively reduced. The described focus camera module is particularly suitable for being applied to the electronic device that seeks to be light and thin. When the glue layer 40 is formed in the outer groove 32, the limit of the glue layer 40 is also facilitated. Of course, it can be understood that, in other embodiments, the inner groove 31 and the outer groove 32 may be omitted, that is, a flat surface, respectively, for mounting the filter element 60 and providing the glue layer. 40.

4 is a modified embodiment of the fixed focus camera module, wherein the difference between the fixed focus camera module of the embodiment of the present invention and the fixed focus camera module of the preferred embodiment is described. It is at the position where the filter element 60 is packaged. Specifically, in the fixed focus camera module of this embodiment of the invention, the filter element 60 is disposed on the circuit board 50, and the filter element 60 covers the photosensitive element 10 . Preferably, the filter element 60 and the photosensitive element 10 are directly attached together. When the wiring board 50 is packaged in the mirror holder 30, the filter element 60 is held between the optical lens 20 and the photosensitive element 10. In a further modified embodiment, the lens holder 30 may integrally cover the filter element 60, the photosensitive element 10 and the circuit board 50, thereby forming an integral unitary structure.

5A is another modified embodiment of the fixed focus camera module, wherein the fixed focus camera module of the embodiment of the present invention and the fixed focus camera module of the preferred embodiment are configured. The difference is in the position at which the filter element 60 is packaged. Specifically, in the fixed focus camera module of this embodiment of the present invention, the filter element 60 is encapsulated in the outer groove 31 of the lens holder 30 to make the filter element 60 more The filter element 60 adjacent to the optical lens 20 and packaged at the tip end 302 of the lens holder 30 can be held between the optical lens 20 and the photosensitive element 10. That is, the outer groove can be used to mount the filter element 60 and provide installation space for the glue layer 40.

It is worth mentioning that in some embodiments, portions of the optical lens 20 may be mounted to the filter element 60 and portions may be mounted to the mirror mount 30. That is, after the filter element 60 is mounted, glue may be disposed at the bottom end of the optical lens 20 or the filter element 60 and the top end of the lens holder 30, and then in the optical lens 20 The glue layer 40 is formed between the mirror holder 30 and the filter element 60.

FIG. 5B is still another modified embodiment of the fixed focus camera module. In this embodiment, the top surface of the lens holder 30 is a planar structure, that is, the lens holder 30 does not have the first groove 3003 and the second groove 3004.

The glue layer 40 is disposed between the top end of the unitary base 3000 and the optical lens 20. The filter element 60 is disposed at a top end of the unitary base 3000. More specifically, the filter element 60 is located inside the optical lens 20.

6 to FIG. 10 are schematic diagrams showing a process of performing a focusing operation on the fixed focus camera module by the focusing device in a process in which the fixed focus camera module is packaged, wherein the focusing device A computing device 70 and a focusing mechanism 80 are included. The computing device 70 can control the focusing mechanism 80 to the camera module by a wired or wireless connection, such as Bluetooth technology, Wi-Fi technology, or network technology. The focusing operation and the operation of the camera module to capture a test image.

The focusing mechanism 80 includes a lens holding device 81 and a photosensitive element holding device 82, wherein the lens holding device 81 can fix the optical lens 20 outside the optical lens 20, more specifically, it can be The end of the optical lens 20 is fixed, or the optical lens 20 is fixed to the outer peripheral side of the optical lens 20. It is worth mentioning that in the prior art, because the above-mentioned lens barrel is required, the external adjusting device cannot directly fix the lens on the outer peripheral side of the lens, and usually adopts a focusing hand wheel to engage with the end of the lens. Then perform the focusing operation. In the present invention, the lens holding device 81 can be sleeved on the optical lens 20, and the focusing operation can be performed on the side of the optical lens 20, that is, not in the prior art, in the base body 33P. The position of the lens is adjusted to the inside of the lens barrel 34P, but a new external fitting structure is provided for performing the focusing process, and the photosensitive member holding device 82 allows the lens holder 30 or the wiring board 50 to be held. It is to be noted that the fixing manner of the lens holding device 81 for fixing the optical lens 20 is not limited. For example, the lens holding device 81 and the optical lens 20 can be threaded, limited, buckled, UV dissociation glue, pressure sensitive adhesive, hot melt material, magnetic adsorption, electrostatic adsorption or vacuum adsorption. It will be understood by those skilled in the art that the above-mentioned manner of fixing the lens holding device 81 and the optical lens 20 is merely an illustrative description to illustrate the advantages and features of the focusing device of the present invention. It does not constitute a limitation on the content and scope of the focusing device of the present invention. The photosensitive element holding device 82 may be any suitable fixing device for the structure of the camera module other than the optical lens 20. For example, a fixing groove may be formed, and the circuit board 50 may be provided. The element 10, the filter element 60 and the photosensitive element of the lens holder 30 are confined in the fixing groove, and the circuit board 50 or the lens holder 30 is further pressed. In the focusing operation, the photosensitive element may be fixed to adjust the position of the optical lens 20; or the optical lens 20 may be fixed and the position of the photosensitive component may be adjusted to implement the optical lens 20 The relative position between the lens holder 30 and the lens holder 30 are adjusted to optically align the optical lens 20 and the photosensitive member 10.

Referring to FIG. 6 and FIG. 9 , a schematic diagram of performing a focusing process on the fixed focus camera module by the focusing device according to the focusing device in the embodiment of the present invention. The focusing device includes the computing device 70 and the focusing mechanism 80, and the computing device 70 can control the focusing mechanism 80 by a wired or wireless connection such as Bluetooth technology, Wi-Fi technology, or network technology. a focusing operation of the camera module and an operation of the camera module to capture a test image.

The focus adjustment mechanism 80 includes the lens holding device 81 and the photosensitive element holding device 82, wherein the lens holding device 81 is capable of fixing the optical lens 20 outside the optical lens 20. More specifically, it may be that the end of the optical lens 20 is fixed, or the optical lens 20 is fixed on the outer peripheral side of the optical lens 20. It is worth mentioning that in the prior art, because the above-mentioned lens barrel is required, the external adjusting device cannot directly fix the lens on the outer peripheral side of the lens, and usually the focusing hand wheel is engaged with the end of the lens, and then the adjustment is performed. Focus operation. In the present invention, the lens holding device 81 can be sleeved on the optical lens 20 to detachably fix the optical lens 20 outside the optical lens 20 for direct or indirect detachable fixing. The optical lens 20 is fixed to the outside of the optical lens 20, and is fixed from the outside of the optical lens to the optical lens by a detachable fixing manner such as a thread, a vacuum, a releasable adhesive manner, or a magnetic fixing. Thereby, the optical lens 20 is stably and accurately adjusted, that is, unlike in the prior art, it is necessary to adjust the position of the lens inside the base body 33P and the lens barrel 34P, but a new external fitting structure is provided. The focusing operation is performed, and the photosensitive member holding device 82 allows the lens holder 30 to be held. It is to be noted that the fixing manner of the lens holding device 81 for fixing the optical lens 20 is not limited. For example, the lens holding device 81 and the optical lens 20 can be threaded, limited, buckled, Fix by UV dissociation, hot melt or vacuum adsorption. It will be understood by those skilled in the art that the above-mentioned manner of fixing the lens holding device 81 and the optical lens 20 is merely an illustrative description to illustrate the advantages and features of the focusing device of the present invention. It does not constitute a limitation on the content and scope of the focusing device of the present invention. The photosensitive element holding device 82 may be any suitable fixing device for the structure of the camera module other than the optical lens 20. For example, a fixing groove may be formed, and the circuit board 50 may be provided. The element 10, the filter element 60 and the photosensitive element of the lens holder 30 are confined in the fixing groove, and the circuit board 50 or the lens holder 30 is further pressed. In the focusing operation, the photosensitive element 10 may be fixed to adjust the position of the optical lens 20; or the optical lens 20 may be fixed and the position of the photosensitive assembly 10 may be adjusted to achieve the optical The relative position between the lens 20 and the lens holder 30 is adjusted to optically align the optical lens 20 and the photosensitive element 10.

Preferably, in some embodiments of the invention, the lens holding device 81 and the optical lens 20 are detachably fixed by means of a thread. For example, the outer portion of the optical lens 20 has an externally threaded structure, and the inside of the lens holding device 81 has an internal thread structure of the same pitch, so that the optical lens 20 and the lens holding device 81 are detachably separated by rotation. The optical lens 20 is fixed.

It should be appreciated that the lens holding device 81 can be fixed from the side of the optical lens 20 or can be fixed from the top of the optical lens 20. It should be understood by those skilled in the art that the lens holding device The position at which the optical lens 20 is fixed 81 is not a limitation of the present invention.

The lens holding device 81 includes an inner sleeve 811 and an outer bracket 812. The inner sleeve 811 is adapted to be detachably fixed to an outer side of the optical lens 20, and the outer bracket 812 surrounds the outer surface. Outside the sleeve 811, the outer sleeve 811 is operated to perform a focusing operation on the optical lens 20.

Specifically, in this embodiment of the invention, the inner sleeve 811 has an externally threaded structure, the outer bracket 812 has an internally threaded structure, the outer threaded structure of the outer bracket 812 and the inner sleeve The externally threaded structure of the barrel 811 has a uniform pitch, so that the outer bracket 812 can rotate the inner sleeve 811 to rotate in unison, so that when the optical lens 20 is not fixed, the optical lens is 20 performs precise adjustment, and when the optical lens 20 is fixed, the inner sleeve 811 and the optical lens 20 can be separated by operating the outer bracket 812, thereby reducing the direct influence on the optical lens 20. .

It is worth mentioning that the adjustment by thread rotation can replace the linear auto-focusing device with similar precision by entering the work industry or relatively simple automation equipment, which can significantly reduce the cost and reduce the equipment space. Occupied. Moreover, since the direction determination is adjusted to some extent by the thread adjustment, the possibility of occurrence of the deviation is small, thereby improving the manual focusing precision of the optical lens 20.

In some embodiments, the optical lens 20 has an externally threaded structure, and the inner sleeve 811 may have an internal threaded structure inside to fit the externally threaded structure of the optical lens 20, that is, the inner sleeve 811. The manner of connection with the optical lens 20 may be a detachable fixing manner of a threaded connection. Of course, in other embodiments, the outer portion of the optical lens 20 may not have the externally threaded structure, and the inner sleeve 811 may not have the internal thread structure inside, but may be separately fixed by other means, such as It is vacuum-adsorbed, releasable gluing, magnetically fixed, etc.

It is worth mentioning that, in some embodiments of the present invention, the internal thread structure of the outer bracket 812, the external thread structure of the sleeve 811, and the internal thread structure of the sleeve 811 and the optical lens 20 The external thread structure has a uniform pitch so that the optical lens can be precisely adjusted by the adjustment of the rotation during the adjustment process, and after the adjustment is completed, the optical lens 20 can be rotated by means of rotation. The lens holding device 81 is separated from the optical lens 20, or the fixing effect of the optical lens 20 is not affected or affected.

In the process of packaging the fixed focus camera module provided by a specific example of the present invention, the photosensitive element 10 is fixed to the circuit board 50, and the photosensitive element 10 and the circuit board are connected by a wire bonding process. 50 is turned on to enable the photosensitive member 10 to be mounted and electrically connected to the wiring board 50. Preferably, the wiring board 50 is a PCB wiring board capable of ensuring the flatness of the photosensitive member 10. After the filter element 60 is packaged in the lens holder 30, the circuit board 50 and the lens holder 30 are packaged such that the filter element 60 is positioned in the photosensitive path of the photosensitive element 10. A glue is dispensed at a corresponding position of the lens holder 30 to allow glue to be applied to the lens holder 30. Preferably, the amount of glue depends on the glue performance and the coated area, and therefore, the amount of glue does not constitute a limitation on the fixed focus camera module and the focusing device of the present invention. The optical lens 20 is placed on the lens holder 30 such that the lower end surface of the optical lens 20 is in contact with glue, and at this time, the optical lens 20 and the photosensitive element 10 are in a substantially matching position. Of course, in another packaging process, the lens holder 30 may be integrally molded on the circuit board 50, and then the photosensitive element 10 may be fixedly and electrically connected to the circuit board 50, and The filter element 60 is mounted on the lens holder 3, and finally the glue is dispensed between the optical lens 20 and the lens holder 30, and the relative position between the two is adjusted to cure the glue.

The optical lens 20 is fixed to the outside of the optical lens 20 by the lens holding device 81, and the lens holder 30 is fixed by the photosensitive member holding device 82 so that the optical lens 20 is held at the photosensitive Photosensitive path of component 10. Preferably, in one embodiment, the glue may be semi-cured to prevent the fluid-like glue from contaminating the photosensitive path of the photosensitive element 10 when the fixed-focus camera module is focused, for example, preventing fluid-like glue. The optical lens 20 or the filter element 60 or the photosensitive path of the photosensitive element 10 is contaminated when the fixed focus camera module is focused.

A test plate is disposed at a front portion of the optical lens 20, and the photosensitive member 10 is powered by the circuit board 50 to enable light reflected or transmitted by the test plate to be optical from the optical lens 20. The interior of the fixed focus camera module is entered to be received and photoelectrically converted by the photosensitive element 10 after the light is filtered by the filter element 60 to generate an image associated with the object. Subsequently, the image is received by the computing device 70, the computing device 70 being capable of generating a focus signal by analyzing the image, wherein the focus signal comprises the optical lens 20 and the photosensitive element The deviation angle and displacement of 10, for example, the focus signal includes the flatness of the optical lens 20 and the photosensitive element 10, the magnitude by which the distance should be adjusted, and the like.

The focusing mechanism 80 receives the focus signal and adjusts the optical lens 20 and the packaged lens frame 30 through the lens holding device 81 and the photosensitive element holding device 82 based on the focus signal. The position of the photosensitive element 10 is to complete a focusing operation on the fixed focus camera module. In one embodiment, the photosensitive element holding device 82 can maintain the lens holder 30 in an initial position, and the lens holding device 81 adjusts the position of the optical lens 20. In another embodiment, the lens holding device 81 can maintain the optical lens 20 in an initial position, and the photosensitive member holding device 82 adjusts the position of the lens holder 30. Nevertheless, in another embodiment, the lens holding device 81 and the photosensitive element holding device 82 can synchronously adjust the positions of the optical lens 20 and the lens holder 30. Accordingly, the focus mechanism 80 may further include a multi-axis adjustment platform 83 to precisely adjust the position of the lens holding device 81 or the photosensitive member holding device 82 in a plurality of directions.

After performing a focusing operation on the fixed focus camera module, the glue is cured to form the glue layer 40 between the optical lens 20 and the lens holder 30, wherein the glue layer 40 is used for sealing a gap between the optical lens 20 and the lens holder 30 to prevent the lens holding device 81 from causing solid particle contaminants generated by the outer surface of the optical lens 20 to pass through when the optical lens 20 is fixed The connection between the optical lens 20 and the lens holder 30 enters the interior from the outside of the fixed focus camera module, thereby facilitating the improvement of the imaging quality of the fixed focus camera module.

It is worth mentioning that the computing device 70 can be any device capable of generating the focus signal by analyzing the image, for example, the computing device 70 can be a desktop computer, a notebook computer, a server, A smart device such as a digital assistant or a combination of two or more of the aforementioned smart devices or any device incorporating the above-mentioned smart device.

Preferably, the computing device 70 includes a receiving module 71 communicably connected, an analyzing module 72, and a data generating module 73. The receiving module 71 can receive the photographed by the fixed focus camera module. The analysis module 72 analyzes the image, and the data generation module 73 generates the focus signal based on the analysis result of the analysis module 72, wherein the data is communicably connected to the data The focusing mechanism 80 of the generating module 73 is capable of adjusting the optical lens 20 and the packaged by the lens holder 30 by the lens holding device 81 and the photosensitive element holding device 82 based on the focus signal. The position of the photosensitive element 10 is described to complete the focusing operation of the fixed focus camera module.

In the process of packaging the fixed focus camera module provided by another specific example of the present invention, the photosensitive element 10 is fixed to the circuit board 50, and the photosensitive line 10 and the line are connected by a wire bonding process. The board 50 is turned on to mount the photosensitive member 10 on the wiring board 50. The filter element 60 is packaged in the mirror mount 30. A glue is dispensed at a corresponding position of the lens holder 30 to allow glue (adhesive) to be applied to the lens holder 30. The optical lens 20 is placed on the lens holder 30 such that the lower end surface of the optical lens 20 comes into contact with the glue. The glue is fixed to form the glue layer 40 between the optical lens 20 and the lens holder 30, wherein the glue layer 40 is used to close the joint of the optical lens 20 and the lens holder 30. Dispense at a corresponding position of the lens holder 30 so that glue is applied to the lens holder 30, and the circuit board 50 is disposed on the lens holder 30, at this time, the optical lens 20 and the photosensitive Element 10 is in a substantially matching position.

The optical lens 20 is fixed to the outside of the optical lens 20 by the lens holding device 81, and the wiring board 50 is fixed by the photosensitive member holding device 82 so that the optical lens 20 is held at the photosensitive Photosensitive path of component 10.

A test plate and a light source are disposed at a front portion of the optical lens 20, and the photosensitive element 10 is powered by the circuit board 50 to enable light reflected by the test plate to enter from the optical lens 20 The inside of the fixed focus camera module is received by the photosensitive element 10 and photoelectrically converted after the light is filtered by the filter element 60 to generate an image related to the object. Subsequently, the image is received by the computing device 70, the computing device 70 being capable of generating a focus signal by analyzing the image, wherein the focus signal comprises the optical lens 20 and the photosensitive element The deviation angle and displacement of 10, for example, the focus signal includes the flatness of the optical lens 20 and the photosensitive element 10, the magnitude by which the distance should be adjusted, and the like.

The focusing mechanism 80 receives the focus signal and adjusts the positions of the optical lens 20 and the photosensitive element 10 by the lens holding device 81 and the photosensitive element holding device 82 based on the focus signal, The focusing operation of the fixed focus camera module is completed. In one embodiment, the photosensitive element holding device 82 can maintain the photosensitive element 10 in an initial position, and the lens holding device 81 adjusts the position of the optical lens 20. In another embodiment, the lens holding device 81 can maintain the optical lens 20 in an initial position, and the photosensitive member holding device 82 adjusts the position of the photosensitive member 10. Nevertheless, in another embodiment, the lens holding device 81 and the photosensitive member holding device 82 can synchronously adjust the positions of the optical lens 20 and the photosensitive member 10. After the focusing operation is performed on the fixed focus camera module, the glue is cured to encapsulate the circuit board 50 and the lens holder 30.

Correspondingly, the focusing method 800 of the fixed focus camera module of the present invention comprises the following steps: pre-assembling the optical lens in step 810: pre-assembling an optical lens 20 on a lens holder 30, wherein the optical lens 20 is exposed in the same manner Outside the lens holder 30, the optical lens 20 is located in a photosensitive path of a photosensitive element 10 assembled on a circuit board 50 to form a pre-assembled camera module; and a step 820 of acquiring a test image: the pre-assembly The camera module performs a shooting operation to obtain a test image; a focusing step 830: adjusting a relative position between the optical lens 20 and the lens holder 30 based on the test image until the pre-assembled camera module Outputting the required clear image; and completing the module assembly step 840: fixing the optical lens 20 and the lens holder 30 to complete the focusing operation and obtaining a fixed-focus camera module that is assembled.

Referring to FIG. 10, the present invention further provides a method 1100 for adjusting a relative position between the optical lens 20 and the photosensitive element 10 of a camera assembly, wherein the focusing method 1100 includes the following steps: Step 1110, (I Generating a focus signal by a computing device 70 by analyzing the image captured by the pre-assembled camera module; and step 1120, (II) by the focus mechanism 80 based on the focus signal, through the tone A lens holding device 81 of the focusing mechanism 80 fixes the optical lens 20 and a photosensitive element holding device 82 outside the optical lens 20 of the fixed focus camera module to directly or indirectly hold the lens holder 30, and adjusts the The relative positions of the optical lens 20 and the lens holder 30 adjust the relative positions of the optical lens 20 and the photosensitive element 10 to perform a focusing operation on the pre-assembled camera module.

Further, before the step (I), further comprising the steps of: maintaining the optical lens 20 in a photosensitive path of the photosensitive element 10; and photographing the optical lens 20 after the photosensitive element 10 is powered A test plate of the optical path obtains the image associated with the test plate.

Further, in the step (I), the method further includes the steps of: receiving, by a receiving module 71, the image captured by the fixed focus camera module; analyzing the image by an analysis module 72; The focusing signal is generated by a data generating module 73 based on the analysis result of the analyzing module 72, so that the focusing mechanism 80 performs the adjustment of the focusing camera module based on the focusing signal. Focus operation.

Further, in the above method, the photosensitive member 10 is mounted on a wiring board 50 packaged on a lens holder 30, and the photosensitive member holding device 82 fixes the lens holder 30 or fixes the The manner of the wiring board 50 is such that the position of the photosensitive member 10 is fixed.

FIG. 12 is a cross-sectional view showing a fixed focus camera module according to a second preferred embodiment of the present invention.

In this embodiment of the invention, the fixed focus camera module includes a photosensitive component 100 and an optical lens 20, wherein the optical lens 20 is packaged on a top end of the photosensitive component 100, the optical lens 20 is located in the photosensitive path of the photosensitive element 100.

The photosensitive element 100 includes a photosensitive element 10, a circuit board 50, and an integrated base 3000. The photosensitive element 10 is electrically connected to the circuit board 50. The integrated base 3000 is integrally formed on the circuit board 50.

The integrated base 3000 includes a molded body 3001 and has a light window 3002 integrally molded on the circuit board 50 in a molded manner, and the light window 3002 is formed in the middle portion. The photosensitive element 10 provides a light path.

In this embodiment of the invention, the optical lens 20 is directly packaged on top of the integral base 3000 such that the optical lens 20 is positioned in the photosensitive path of the photosensitive element 10 and constitutes the fixed focus Camera module. In other words, the fixed-focus camera module of the present invention does not need to provide a prior art lens barrel structure. In this manner, the volume of the fixed-focus camera module around the optical lens 20 can be reduced. When the fixed focus camera module is mounted on an electronic device, the fixed focus camera module can occupy the space of the electronic device as little as possible, thereby enabling the electronic device to leave more space. For the installation of other components.

In addition, the fixed focus camera module of the present invention does not need to provide the prior art lens barrel structure, but directly encapsulates the optical lens 20 in the integrated base 3000. In this way, the use of raw materials can be reduced. The cost of the fixed focus camera module is reduced, thereby improving the product competitiveness of the fixed focus camera module.

Further, in this embodiment of the invention, the integrated base 3000 is integrally formed on the circuit board 50 by molding, and the integrated base 3000 has better surface flatness for the optical lens. 20 provides a flatter mounting surface.

The photosensitive element 100 includes a circuit component 51 electrically connected to the wiring board 50 for the photosensitive operation of the photosensitive component 10. The circuit component 51 can be, for example but not limited to, a resistor, a capacitor, a diode, a triode, a potentiometer, a relay, a driver, and the like.

It is worth mentioning that the molded body 3001 can cover the circuit element 51 element inside, thus making the circuit component 51 not directly exposed to the space, more specifically, not exposed to The photosensitive element 10 is in a closed environment in which it communicates. The circuit device in different conventional camera modules exists in such a manner that the resistive container member protrudes from the circuit board 50, thereby preventing dust and debris from staying in the circuit component 51 and contaminating the photosensitive member 10. In this embodiment of the invention, the circuit component 51 is illustrated as being exemplified by the circuit board 50. In other embodiments of the invention, the circuit component 51 is embedded in the circuit board. 50, without protruding the circuit board 50, it will be understood by those skilled in the art that the structure, type and location of the circuit component 51 are not limiting of the present invention. It can be understood that in the conventional camera module, the circuit device protrudes from the circuit board 50, and the base can only be mounted on the outer side of the circuit component 51, so the circuit device and the base are required. A certain spatial position, therefore, requires a higher dimension in the lateral direction of the circuit board 50. For the camera module based on the integrated package process of the present invention, the molding body 3001 is integrally packaged on the circuit board 50 and covers the circuit component 51, and thus the molding body 3001 and the circuit component The spaces 51 overlap each other, thereby increasing the space in which the molding body 3001 can be disposed inward, reducing the external extension requirement of the circuit board 50, thereby reducing the lateral size of the camera module, so that Equipment that meets the needs of miniaturization.

It is worth mentioning that the molding main body 3001 envelops the circuit component 51 has the advantage of protecting the circuit component 51 from being contaminated and being accidentally touched, and brings the corresponding camera module. Advantages, but those skilled in the art will appreciate that the molded body 3001 is not limited to cladding the circuit component 51. That is, in other embodiments of the present invention, the molded body 3001 may be directly molded to the wiring board 50 of the circuit component 51 without protruding, or may be molded to the circuit component. 51 different positions on the outside, around, etc.

In this embodiment of the invention, the molding body 3001 is convexly surrounding the outside of the photosensitive member 10, and in particular, the molding body 3001 is integrally closed and connected to have a good sealing property, so that when When the optical lens 20 is mounted on the photosensitive path of the photosensitive member 10, the photosensitive member 10 is sealed inside to form a corresponding closed inner space.

The photosensitive element 10 is electrically connected to the wiring board 50 through at least one connecting wire 11. The connecting wires 11 can be implemented as, for example but not limited to, gold wires, copper wires, aluminum wires, silver wires, pads, wires, pins.

Specifically, in manufacturing the photosensitive member 100, a conventional wiring board 50 can be selected as the wiring board 50, and molding is performed on the surface of the wiring board 50. For example, in an embodiment, the circuit board 50 after the SMT process (Surface Mount Technology surface mount process) may be integrally packaged by an insert molding process using a molding die, such as a molded package. The molded body 3001 is formed, or the molded body 3001 is formed by a molding process commonly used in a semiconductor package. Further, each of the photosensitive elements 10 is attached to the wiring board 50, and then the photosensitive elements 10 are electrically connected to the wiring board 50, for example, by a gold wire. The circuit board 50 can be selected, for example, but not limited to, a soft and hard bonding board, a ceramic substrate (without a soft board), a PCB hard board (without a soft board), and the like. The manner in which the molded body 3001 is formed may be selected, for example, but not limited to, an injection molding process, a molding process, and the like. The molding body 3001 may be selected from materials such as, but not limited to, nylon, LCP (Liquid Crystal Polymer), PP (Polypropylene, polypropylene), etc., and the molding process may be adopted. Epoxy resin. It should be understood by those skilled in the art that the foregoing alternatives and the materials that can be selected are merely illustrative of the embodiments of the invention and are not intended to be limiting.

In another embodiment of the present invention, the process of manufacturing the photosensitive element 100 may be performed by performing an SMT process on the circuit board 50, and then mounting the photosensitive element 10 on the circuit board 50, and The photosensitive element 10 is electrically connected to the circuit board 50, such as a gold wire electrical connection, and then the circuit board 50 is integrally packaged, such as a molded package, and the molded body is formed by insert molding. 3001, or the molded body 3001 is formed by a molding process commonly used in semiconductor packages. It will be understood by those skilled in the art that the order of manufacture of the photosensitive element 100 is not a limitation of the present invention.

In the process of encapsulating the fixed focus camera module of the present invention, the optical lens 20 is adjusted relative to the light sensitive lens by fixing the optical lens 20 outside the optical lens 20 by the focusing mechanism. The position of the component 10 to improve the imaging quality of the fixed focus camera module, such as actively aligning the optical lens and/or the photosensitive element, such that the optical lens 20 and the light of the photosensitive component 100 The axes are consistent. Therefore, in this process, even if the focusing mechanism causes the optical lens 20 to generate contaminants such as solid particles, the solid particles and the like do not enter the interior of the fixed focus camera module. The contaminants such as the solid particles are prevented from being contaminated, thereby ensuring the imaging quality of the fixed focus camera module. After the contaminants such as the solid particles are generated, the contaminants such as the solid particles adhere to at least the outer surface of the fixed focus camera module, and after the fixed focus camera module is packaged, the cleaning can be removed by cleaning. Contaminants such as solid particles attached to the outer surface of the fixed focus camera module to ensure the image quality of the fixed focus camera module during use in the electronic device.

Further, as shown in FIG. 12A, the fixed focus camera module includes a glue layer 40, wherein the glue layer 40 is located between the optical lens 20 and the integrated base 3000 for using the optical lens 20 Directly packaged in the integral base 3000, correspondingly the glue layer 40 is annular, connecting the annular outer edge of the optical lens 20 with the integral base 3000, and preferably formed of an opaque material . It is worth mentioning that the glue layer 40 can not only connect the optical lens 20 and the integrated base 3000, but also the glue layer 40 can be used for sealing from the optical lens 20 and the integrated base 3000. a junction to prevent contaminants such as solid particles or external contaminants or external light from entering the fixed focus camera from the outside of the fixed focus camera module through the connection of the optical lens 20 and the integrated base 3000 The inside of the module is beneficial to ensure the imaging quality of the fixed focus camera module.

The glue layer 40 is formed at a joint of the optical lens 20 and the integrated base 3000. Specifically, selectively dispensing at a corresponding position of at least one of the optical lens 20 and the integrated base 3000, after the dispensing operation is completed, mounting the lower end surface of the optical lens 20 to the The base 3000 is integrated so that the glue is between the optical lens 20 and the integrated base 3000, and the fixed focus camera module is subjected to focusing, and the focus can be fixed on the outside of the optical lens 20 by focusing In the manner of the optical lens 20, after the focusing is completed, the glue is solidified to form the glue layer 40 between the optical lens 20 and the integrated base 3000. Preferably, dispensing may be performed only at the corresponding position of the unitary base 3000 to prevent glue from contaminating the optical lens 20. More preferably, the glue may be cured by irradiation of ultraviolet light (Ultraviolet Rays, UV light), that is, the glue layer 40 may use an ultraviolet light curing glue. Of course, it will be understood by those skilled in the art that other suitable glues can be used as well as curing the glue by other means such as thermal curing.

It is worth mentioning that after the dispensing operation is completed at the corresponding position of the integrated base 3000, the glue may be semi-cured to prevent the glue from being glued in the process of encapsulating the optical lens 20 in the integrated base 3000. The optical lens 20 causes contamination. In other words, after the glue is applied to the integral base 3000 by dispensing, the glue may be semi-cured to make the semi-cured glue have viscosity and plasticity, at the lower end of the optical lens 20. After the integrated base 3000 is mounted and the focus adjustment of the fixed focus camera module is completed, the glue is completely cured to form the glue layer 40 between the optical lens 20 and the integrated base 3000. Thus, on the one hand, the glue layer 40 keeps the optical lens 20 in a position after focusing, and on the other hand, the glue layer 40 closes the joint of the optical lens 20 and the integrated base 3000. Of course, it is also possible to directly cure the glue to form the glue layer 40 after the focusing operation without going through the semi-cured state.

In the process of encapsulating the fixed focus camera module of the present invention, the glue layer 40 can improve the flatness of the optical lens 20 and the integrated base 3000, so that the central axis of the optical lens 20 can be The central axes of the photosensitive elements 10 are coincident to improve the imaging quality of the fixed focus camera module. That is, the glue layer 40 can compensate for the product error of the optical lens 20 and the product error of the integrated base 3000 and the mounting error of the optical lens 20 and the integrated base 3000, thereby improving the setting. The imaging quality of the focal camera module.

In this embodiment of the invention, the filter element 60 is disposed between the photosensitive element 10 and the optical lens 20 for improving the imaging quality of the fixed focus camera module. Light reflected by the object enters the interior of the fixed focus camera module from the optical lens 20, and is further filtered by the photosensitive element 10 and photoelectrically converted after being filtered by the filter element 60 to generate an object. Associated image. That is, the filter element 60 can filter the stray light in the light reflected by the object from the optical lens 20 into the inside of the fixed focus camera module to improve the imaging of the fixed focus camera module. quality. Specifically, the filter element 60 is disposed on the integrated base 3000.

Referring to FIG. 12A, the integrated base 3000 has a first recess 3003 and a second recess 3004. The first recess 3003 and the second recess 3004 communicate with the optical window 3002 to facilitate installation. The filter element 60 and the optical lens 20. In this way, the height of the fixed focus camera module can be effectively reduced, so that the fixed focus camera module is particularly suitable for being applied to the electronic device that is intended to be thin and light.

More specifically, the filter element 60 is mounted to the first recess 3003, and the optical lens 20 is mounted to the second recess 3004. It is worth mentioning that, in this embodiment of the invention, the integral base 3000 is formed by molding in one piece, and has good surface flatness, so the first groove 3003 and the second concave The inner sides of the grooves 3004 are relatively flat, providing a flat mounting surface for the filter element 60 and the optical lens 20.

That is, when the fixed focus camera module is manufactured, a medium such as glue may be applied to the integral base 3000 and the second recess 3004 or the bottom of the optical lens 20, so that the optical lens 20 is The glue layer 40 is formed between the inner surface of the second groove 3004, so that the optical lens 20 is stably mounted on the integrated base 3000 to form a fixed focus camera module. Of course, before the optical lens 20 is fixed, the camera module needs to be adjusted by the focusing mechanism to adjust the relative positions of the optical lens 20 and the photosensitive element 100, so as to improve the fixed focus. The imaging quality of the camera module.

In the process of the fixed focus camera module of this embodiment of the present invention, in step 1, the circuit board 50 and the photosensitive element 10 may be first fixed together, and the circuit board 50 is turned on by a wire bonding process. And the photosensitive element 10 to electrically connect the photosensitive element 10 to the wiring board 50.

Step 2, the filter element 60 is packaged in the integrated base 3000. For example, in the example shown in FIG. 12 of the present invention, the filter element 60 may be packaged in the unit of the integrated base 3000. The second groove 3004 is described.

In step three, the circuit board 50 is assembled with the integrated base 3000 such that the filter element 60 corresponds to the photosensitive element 10 mounted on the wiring board 50.

In step four, dispensing is performed at a corresponding position of the integrated base 3000. It is worth mentioning that the amount of glue can be provided as needed, for example, the amount of glue needs to be ensured to be in contact with the lower end surface of the optical lens 20. It is worth mentioning that the amount of glue depends on the glue performance and coating area.

Step 5, the optical lens 20 is mounted on the integrated base 3000 such that glue is located between the optical lens 20 and the integrated base 3000, and the optical lens 20 is ensured to be in the photosensitive element 10 path.

Step 6: Adjust the position of the optical lens 20 relative to the photosensitive element 10 to focus the fixed focus camera module. Specifically, the photosensitive element 10 is energized by the wiring board 50 to enable the photosensitive element 10 to output an image, and the fixed focus camera module is focused according to the sharpness of the image. The focusing of the fixed focus camera module may be performed by adjusting the position of the optical lens 20 relative to the photosensitive element 10 by clamping the outer surface of the optical lens 20, The fixed focus camera module of the present invention realizes focusing of the fixed focus camera module outside the fixed focus camera module, so that even the focus mechanism causes the optical lens 20 to be outside The solid particle contaminant is generated on the surface, and the solid particle contaminant does not enter the interior of the fixed focus camera module to improve the imaging quality of the fixed focus camera module. It is worth mentioning that in the process of performing the focusing operation on the fixed focus camera module of the present invention, although the zoom camera module can be adjusted by adjusting the position of the optical lens 20 relative to the photosensitive element 10 The focal length, in other examples, the position of the photosensitive element 10 relative to the optical lens 20 can also be adjusted by moving the integral base 3000, that is, moving the photosensitive element 100 as a whole.

In step seven, the glue is cured to form the glue layer 40 between the optical lens 20 and the integral base 3000. It can be understood that, on the one hand, the glue layer 40 can be used to connect the optical lens 20 and the integrated base 3000 such that the optical lens 20 is held in the photosensitive path of the photosensitive element 10, on the other hand. The glue layer 40 can prevent external contaminants from entering the interior from the outside of the zoom camera module through the connection of the optical lens 20 and the integrated base 3000. On the other hand, the glue layer 40 can block external light. The connection between the optical lens 20 and the integrated base 3000 enters the interior from the outside of the zoom camera module. In addition, the glue layer 40 can also compensate for the product error of the optical lens 20 and the product error of the integrated base 3000 and the mounting error of the optical lens 20 and the integrated base 3000 to prevent the optical lens 20 from being damaged. And the photosensitive element 10 is relatively inclined, thereby facilitating the image quality of the fixed focus camera module.

As shown in FIG. 12B, it is a modified embodiment of a fixed focus camera module according to a second preferred embodiment of the present invention. In this embodiment, the top surface of the unitary base 3000 is a planar structure, that is, the unitary base 3000 does not have the first groove 3003 and the second groove 3004.

The glue layer 40 is disposed between the top end of the unitary base 3000 and the optical lens 20. The filter element 60 is disposed at a top end of the unitary base 3000. More specifically, the filter element 60 is located inside the optical lens 20.

Figure 13 is a first modified embodiment of a second preferred embodiment of the present invention. In this embodiment of the invention, the filter element 60 covers the photosensitive element 10. The manner in which the filter element 10 is covered is exemplified by, but not limited to, being covered by the photosensitive element 10 by adhesive bonding, such as by being composited on the photosensitive element 10, such as by attaching it to the device. The photosensitive member 10 is described. When the optical lens 20 is packaged in the integral base 3000 of the photosensitive assembly 100, the filter element 60 is held between the optical lens 20 and the photosensitive element 10.

Further, the integrated base 3000 has the second recess 3004 for mounting the optical lens 20, that is, in this embodiment of the invention, the integrated base 3000 does not have the The first groove 3003 of the filter element 60.

Figure 14 is a second modified embodiment of a second preferred embodiment of the present invention. In this embodiment of the invention, the integral base 3000 has a second recess 3004, and the filter element and the optical lens are mounted to the second recess 3004. The filter element 60 is encapsulated in the second recess 3004 of the integral base 3000 such that the filter element 60 is further adjacent to the optical lens 20 and is packaged in the integrated base 3000 The filter element 60 can be held between the optical lens 20 and the photosensitive element 10. That is, the second groove 3004 can be used to mount the filter element 60 and provide an installation space for the glue layer 40.

More specifically, in this embodiment of the invention, the glue layer 40 is disposed between the optical lens and the filter element.

The fixed focus camera module of this embodiment of the present invention may be formed by integrally forming the integrated base 3000 on the circuit board 50, and electrically connecting the photosensitive element 10 on the circuit board 50. Forming the photosensitive element 100; then mounting the filter element 60 in the second recess 3004 of the unitary base 3000, and then providing glue at the edge of the filter element 60 or Glue is disposed at a bottom end of the optical lens 20; then the optical lens 20 is mounted to the filter element 60 such that glue is located between the filter element 60 and the optical lens 20, and the optical lens 20 is caused a photosensitive path of the photosensitive element 60; further, adjusting a position of the optical lens 20 relative to the photosensitive element 10 to focus the fixed focus camera module; further, curing the glue to form a location The glue layer 40 between the optical lens 20 and the filter element 60 is described.

FIG. 15A is a schematic diagram of a fixed focus camera module according to a third preferred embodiment of the present invention. In this embodiment of the invention, the integrated base 3000 has a first recess 3003 and a second recess 3004, and the fixed focus camera module includes a seat 61, the support 61 is used to mount the filter element 60, and the holder 61 is mounted to the first groove 3003.

The glue layer 40 is disposed between the integral base 3000 and the optical lens 20. More specifically, the glue layer 40 is disposed on the second groove 3004. That is, the optical lens 20 is mounted to the second groove 3004 through the glue layer 40.

That is, when assembling the fixed focus camera module, the filter element 60 may be mounted to the holder 61, and then the holder 61 is mounted to the first groove 3003, and then A predetermined position of the surface of the support 61 or the end of the optical lens 20 is provided with glue, and the optical lens 20 is further pre-mounted on the integrated base 3000 such that glue is located at the integrated base 3000 and the optical Between the lenses 20, and the optical lens 20 is located in the photosensitive path of the photosensitive element 10; further, adjusting the position of the optical lens 20 relative to the photosensitive element 10 to perform the fixed focus camera module Focusing; further, the glue is cured to form the glue layer 40 between the optical lens 20 and the integral base 3000.

FIG. 15B is a schematic view showing a modified embodiment of a fixed focus camera module according to a third preferred embodiment of the present invention. In this embodiment of the invention, the integrated base 3000 has a second recess 3004, and the fixed focus camera module includes a seat 61 for mounting the filter element. 60. The support 61 is mounted to the second recess 3004.

More specifically, in this embodiment of the invention, the glue layer 40 is disposed between the holder 61 and the optical lens 20.

That is, when assembling the fixed focus camera module, the filter element 60 may be mounted to the holder 61, and then the holder 61 is mounted to the second groove 3004, and then A predetermined position of the surface of the holder 61 or the end of the optical lens 20 is provided with glue, and the optical lens 20 is further pre-mounted to the holder 61 so that glue is located at the holder 61 and the optical Between the lenses 20, and the optical lens 20 is located in the photosensitive path of the photosensitive element 10; further, adjusting the position of the optical lens 20 relative to the photosensitive element 10 to perform the fixed focus camera module Focusing; further, the glue is cured to form the glue layer 40 between the optical lens 20 and the holder 61.

As shown in FIG. 16, it is a fixed focus camera module according to a fourth preferred embodiment of the present invention. In this embodiment of the invention, the unitary base 3000 integrally encloses the circuit board and at least a portion of the photosensitive element 10. The integral base covers the connecting wire 11 . That is, in this embodiment of the invention, the unitary base 3000 extends inwardly to the edge of the photosensitive element 10. The optical lens 20 is directly disposed on the integrated base 3000.

It is worth mentioning that the photosensitive element 10 can be fixed to the circuit board 50 by integrally encapsulating the circuit board 50 and at least a part of the photosensitive element 10 by the integrated base 3000, so that it can be fixed without being separately fixed. The photosensitive element 10 and the wiring board 50 simultaneously expand the inclusive range of the integrated base 3000, thereby reducing an outer area of the photosensitive element 100.

Figure 17 is a perspective view of a modified embodiment of a fixed focus camera module in accordance with a fourth embodiment of the present invention. In this embodiment of the invention, the filter element 60 covers the photosensitive element 10, the integral base 3000 integrally encapsulating the circuit board 50, at least a portion of the photosensitive element 10, and at least a portion of the filter Element 60.

That is, in this embodiment, the integral base 3000 fixes the photosensitive element 10 and the filter element 60, so that a separate fixing manner is not required.

Further, the integrated base 3000 has the second recess 3004 for mounting the optical lens 20, that is, in this embodiment of the invention, the integrated base 3000 does not have the The first groove 3003 of the filter element 60.

As shown in FIG. 18 to FIG. 21, it is a fixed focus camera module and a multi-group lens thereof according to a fifth preferred embodiment of the present invention.

The fixed focus camera module includes a multi-group lens 90 that is directly mounted to the lens mount 30. That is, in this embodiment of the invention, the optical lens 20 is the multi-group lens 90.

Further, the multi-group lens 90 is directly mounted to the lens holder 30 through the glue layer 40. The multi-group lens 90 is exposed outside the lens holder 30.

The multi-group lens 90 includes a plurality of group units 10, and the adjacent two group units 10 are assembled with each other, and the optical axes are identical.

It is worth mentioning that in the conventional fixed focus camera module, the lens is usually mounted in the lens barrel, and then the lens is adjusted by adjusting the lens barrel, and similarly, for the multi-group composed of a plurality of group units. The lens needs to be mounted on the lens barrel and the like in the conventional fixed focus camera module, so that it is not possible to directly adjust each group unit 9010 directly, and the lens barrel member is not suitable for being clamped and adjusted, and In the present invention, each of the group units 9010 is directly exposed outside the lens holder 30. Therefore, when assembling the fixed focus camera module, each of the group units 9010 can be conveniently adjusted. Alternatively, the group unit 9010 that needs to be adjusted can be freely selected.

For convenience of description, in the embodiment of the present invention, the multi-group lens 90 is configured by using the two group units 9010 as an example. Of course, in other embodiments of the present invention, the multi-group The lens 90 may include more of the group units 9010, such as three or more, and the invention is not limited in this regard.

Specifically, the multi-group lens 90 includes two of the group units 9010, which are an upper group unit 9011 and a lower group unit 9012, respectively. The upper group unit 9011 and the lower group unit 9012 are assembled in cooperation with each other. The upper group unit 9011 and the lower group unit 9012 are stacked, and the optical axis directions are the same.

The upper group unit 9011 includes at least one upper lens 90111 and an upper bearing member 90112, and the upper lens 9011 is sequentially disposed in the upper carrying member 90112 in a light path. Preferably, the number of the upper lenses 9011 is plural, such as 2, 3 or more.

The lower group unit 9012 includes at least a lower lens 90121 and a lower carrier member 90122, which are sequentially disposed in the lower carrier member 90122 in a light path. Preferably, the number of the lower lenses 90121 is plural, such as 2, 3 or more.

Further, in this embodiment of the invention, the upper carrier member 90112 of the upper group unit 9011 includes an upper carrier body 901121 and an extension wall 901122. The upper carrier body 901121 is a hollow structure for accommodating, mounting, and arranging each of the lenses along a ray path. In other words, each of the upper lenses 90111 of the upper group unit 9011 is mounted inside the upper carrier body 901121 to facilitate providing a light path. The extension wall 901122 extends outward from the outside of the upper carrier body 901121 to facilitate overlapping with the upper carrier member 90112 of the lower group unit 9012.

More specifically, the extension wall 901122 extends integrally outward from the exterior of the upper carrier body 901121. In some embodiments, the extension wall 901122 can be an annular extension wall extending outward from the upper carrier body 901121 to form an annular brim structure so as to be overlapped by the annular brim structure to the lower group. The lower carrier member 90122 of unit 9012 provides stable support for the upper group unit 9011.

When the upper group unit 9011 and the lower group unit 9012 are fixed, an adhesive medium 9013, such as UV glue or thermosetting glue, is disposed between the upper group unit 9011 and the lower group unit 9012. , UV thermosetting glue, epoxy glue, etc., in order to stably fix the upper group unit 9011 and the lower group unit 9012. Of course, in other embodiments of the present invention, the upper group unit 9011 and the lower group unit 9012 may be fixed by other means, such as heat welding, ultrasonic welding, laser welding, riveting, fastening, and snapping. In other ways, the invention is not limited in this regard. The bonding medium 9013 and the bonding layer 40 may be formed of the same material and process, or may be formed by different materials and processes. The bonding medium 9013 may be selected from one or more of the group consisting of UV glue, thermosetting glue, UV thermosetting glue, epoxy resin glue, moisture curing glue, and pressure sensitive adhesive.

According to this embodiment of the invention, the lower group unit 9012 is mounted to the mirror mount 30 directly through the glue layer 40.

The upper carrier body 901121 of the upper carrier unit 90112 of the upper group unit 9011 has a lower sleeve end portion 9011211, which is located below the extension wall 901122, and the lower sleeve end portion 9011211 is sleeved in the The lower carrier member 90122 of the lower group unit 9012. In other words, the extension wall 901122 of the upper carrier member 9112 of the upper group unit 9011 divides the upper carrier body 901121 into two parts, the upper portion and the lower portion, and the lower portion That is, the lower sleeve end portion 9011211. When the extension wall 901122 of the upper carrier member 90112 of the upper group unit 9011 is overlapped with the lower carrier member 90122 of the lower group unit 9012, the lower sleeve end portion 9011211 is sleeved. The lower carrier member 90122 of the lower group unit 9012.

The lower carrier member 90122 of the lower group unit 9012 includes a lower carrier body 901221 and an upper overlapping end portion 901222. The lower carrier body 901221 is a hollow structure for accommodating and mounting each of the lower lenses 90121 and arranging them along a light path. In other words, each of the lower lenses 90121 of the lower group unit 9012 is mounted inside the lower carrier body 901221 to facilitate providing a light path. The upper overlapping end portion 901222 is integrally connected to the lower carrying body 901221 so as to fit the upper carrying member 90112 of the upper group unit 9011 such that the extending wall 901122 of the upper receiving member When the upper overlapping end portion 901222 of the lower carrier member 90122 is overlapped, the lower sleeve end portion 9011211 of the upper carrier member 90112 of the upper group unit 9011 extends into the lower carrier member The upper overlapping end 901222 of 90122, such that the lower carrier member 90122 of the lower group unit 12 constrains the mounting position of the upper group unit 9011.

In other words, in this embodiment of the invention, the extension wall 901122 and the upper overlapping end 901222 form an assembled structure to facilitate the assembly of the upper group unit 9011 and the lower group unit. 9012.

The upper overlapping end portion 901222 is a hollow structure extending inwardly to provide an overlapping support position for the upper group unit 9011 and for each of the lower lenses 90121 located in the lower carrier body 901221 Light path.

It is worth mentioning that the lens optical axis consistency and assembly time are two important aspects in the actual production application of the camera module, and the fixed focus camera module formed by the multi-group lens 90 in the present invention can pass The assembly is performed in a plurality of ways, and each of the group units 9010 can be conveniently and directly clamped, and each of the group units 9010 is adjusted to accurately, conveniently, and quickly assemble the fixed focus camera module.

It is worth mentioning that, in the present invention, a plurality of group units 9010 are assembled to form an integral lens, so that the number of lenses in each group unit 9010 is small, and the assembly error of each unit is small, but each The multi-group lens 90 formed by the group unit 9010 has a large number of lenses, so that higher primitives can be provided, and the cumulative error is small. And each of the group units 9010 can be adjusted and assembled by the focusing mechanism in the process of assembling the multi-group lens, so that the relative error between the group units 9010 is reduced, and the adjustment can also be adjusted. The manufacturing error of the lens itself is compensated, so that the multi-group lens 90 has better optical consistency. Each of the group units 9010 is assembled to each other by an assembly structure, so that each group unit 9010 is stably assembled to form the multi-group lens 90, and the manner of cooperation can block external stray light from entering the multi-group. Inside the lens 90, it is avoided to interfere with the optical system of the multi-group lens 90. And in some embodiments, each of the group units 9010 can be secured by a rapidly formed bonding medium 9013, such as a UV thermoset, and the mating structure can provide sufficient ultraviolet light for the bonding medium. The area enables each of the group units to be assembled and fixed quickly and stably, thereby improving production efficiency.

The multi-group lens 90 can be assembled to the lens holder 30 in a plurality of ways to form the fixed focus camera module.

For example, in one manner, the lower group unit 9012 may be pre-assembled to the mirror base 30, and then the lower group unit 9012 is directly paired with the lower group unit by the focusing mechanism 80. 9012 is adjusted, and then the lower group unit 9012 is fixed to the lens holder 30 through the glue layer 40; then the upper group unit 9011 is pre-assembled on the lower group unit 9012, and then passed through The focusing mechanism 80 directly adjusts the upper group unit 9011, and then fixes the upper group unit 9011 to the lower group unit 9012 through the bonding medium 9013; in the foregoing manner, until fixed All of the group units 9010 are completed. It is worth mentioning that, in this adjustment manner, the group unit 9010 can be adjusted by an auxiliary lens. For example, when the lower group unit 9012 is adjusted, the auxiliary unit is disposed above the lower group unit 9012. The lens is used to observe imaging information of the fixed focus camera module, and the lower group unit 9012 is adjusted according to the imaging information. In this way, the assembly of each of the group units 9010 can be accurately adjusted, and errors caused by factors such as deformation of the photosensitive element 10 or the circuit board 50 can be compensated by successive adjustments, thereby Improving the imaging quality of the fixed focus camera module.

More specifically, referring to FIG. 22, the inner sleeve 811 of the lens holding device 81 of the focus adjustment mechanism 80 detachably fixes the lower group unit 9012, and the outer bracket 812 adjusts the An inner sleeve 811 to adjust the lower group unit 9012; further, after the adjustment of the lower group unit 9012 reaches a predetermined requirement, the lower group unit 9012 and the mirror are fixed by the glue layer 40 Seat 30; further, the inner sleeve 811 is disengaged from the lower group unit 9012 by adjusting the outer bracket 812; further, the upper group unit 9011 is pre-assembled to the lower group unit 9012; Further, the inner sleeve 811 of the lens holding device 81 of the focusing mechanism 80 detachably fixes the upper group unit 9011, and the inner sleeve 811 is adjusted by the outer bracket 812, thereby Adjusting the upper group unit 9012; further, fixing the upper group unit 9011 and the lower group unit 9012 by the bonding medium 9013; further, the inner sleeve is adjusted by adjusting the outer bracket 812 811 leaves the upper group unit 9011, This resulted in the fixed-focus camera module.

For example, in another manner, the upper group unit 9011 and the lower group unit 9012 may be simultaneously pre-assembled in the photosensitive path of the photosensitive element 10; and then the focusing mechanism 80 is used to The lower group unit 9012 and/or the upper group unit 9011 are directly adjusted such that the pre-assembled fixed focus camera module meets predetermined imaging requirements; the lower group unit is further passed through the glue layer 40 The 9012 is fixed to the lens holder 30, and the upper group unit 9011 is fixed to the lower group unit 9012 by the bonding medium 9013. Of course, each of the group units 9010 can be assembled into a full-featured lens, that is, the multi-group lens 90 is assembled first, and then assembled to the lens holder 30 as a whole.

More specifically, referring to FIG. 23, the upper group unit 9011 and the lower group unit 9012 are pre-assembled to the lens holder 30; further, by the lens holding device 81 of the focusing mechanism 80 The inner sleeve 811 detachably fixes the lower group unit 9012, and the inner sleeve 811 is adjusted by the outer bracket 812 to adjust the lower group unit 9012; further, when the lower group After the adjustment of the unit 9012 reaches a predetermined requirement, the lower group unit 9012 and the lens holder 30 are fixed by the glue layer 40; further, by adjusting the outer bracket 812, the inner sleeve 811 is disengaged from the a lower group unit 9012; further, the inner sleeve 811 of the lens holding device 81 of the focusing mechanism 80 detachably fixes the upper group unit 9011, and the outer bracket 812 adjusts the An inner sleeve 811 to adjust the upper group unit 9011; further, the upper group unit 9011 and the lower group unit 9012 are fixed by the adhesive 9013; further, by adjusting the outer bracket 812 Causing the inner sleeve 811 out of the upper group Element 9011, whereby the fixed-focus camera module.

It is worth mentioning that the lens holding device 81 can be fixed from the side of the group unit 9010 or can be fixed from the top of the group unit 9010.

FIG. 24 is a cross-sectional view showing a fixed focus camera module according to a sixth preferred embodiment of the present invention. Different from the above embodiment, the multi-group lens 90 is directly mounted to the integrated base 3000. More specifically, the multi-group lens 90 is directly fixed to the unitary base 3000 by the glue layer 40. That is, the glue layer 40 is disposed between the multi-group lens 90 and the integrated base 3000.

When the fixed focus camera module is manufactured, after the photosensitive member with the integrated base 3000 is formed by integral molding, the multi-group lens 90 is directly mounted on the integrated base 3000. Or one of the group units 9010 such that the multi-group lens 90 is directly mounted without the need to provide a separate barrel component.

It is worth mentioning that, in this embodiment of the invention, the integral base 3000 is formed by integral molding, and has a flat surface, which can directly provide a flatter mounting plane for the multi-group lens 90. It is beneficial to improve the imaging quality of the fixed focus camera module.

It should be noted that the fixed focus camera module described in the embodiments shown in FIG. 12 to FIG. 24 can be adjusted by the focusing mechanism 80 shown in FIG. 6 to FIG. 10, and then fixed. The fixed focus camera module.

The multi-group lens 90 can be assembled to the one-piece base 3000 in a plurality of ways to form the fixed-focus camera module of the molding type.

For example, in one manner, the lower group unit 9012 may be pre-assembled to the integrated base 3000, and then the lower group unit 9012 is directly paired with the lower group unit by the focusing mechanism 80. 9012 is adjusted, and then the lower group unit 9012 is fixed to the integrated base 3000 through the glue layer 40; then the upper group unit 9011 is pre-assembled on the lower group unit 9012, and then passed through The focusing mechanism 80 directly adjusts the upper group unit 9011, and then fixes the upper group unit 9011 to the lower group unit 9012 through the bonding medium 9013; in a sequential manner until the fixing is completed All of the group units 9010. It is worth mentioning that, in this adjustment manner, the group unit 9010 can be adjusted by an auxiliary lens. For example, when the lower group unit 9012 is adjusted, the auxiliary unit is disposed above the lower group unit 9012. The lens comes to observe the imaging information of the fixed focus camera module, and adjusts the lower group unit 9012 according to the imaging information. In this way, the assembly of each of the group units 9010 can be accurately adjusted, and errors caused by factors such as deformation of the photosensitive element 10 or the circuit board 50 can be compensated by successive adjustments, thereby Improving the imaging quality of the fixed focus camera module.

More specifically, the inner sleeve 811 of the lens holding device 81 of the focus adjustment mechanism 80 detachably fixes the lower group unit 9012, and the inner sleeve 811 is adjusted by the outer bracket 812. And adjusting the lower group unit 9012; further, after the adjustment of the lower group unit 9012 reaches a predetermined requirement, the lower group unit 9012 and the integrated base 3000 are fixed by the glue layer 40; The inner sleeve 811 is disengaged from the lower group unit 9012 by adjusting the outer bracket 812; further, the upper group unit 9011 is pre-assembled to the lower group unit 9012; further, The inner sleeve 811 of the lens holding device 81 of the focusing mechanism 80 detachably fixes the upper group unit 9011, and the inner sleeve 811 is adjusted by the outer bracket 812, thereby adjusting the upper portion a group unit 9012; further, the upper group unit 9011 and the lower group unit 9012 are fixed by the adhesive 9013; further, the inner sleeve 811 is disengaged by adjusting the outer bracket 812 Upper group unit, thus obtained Said fixed-focus camera module.

For example, in another manner, the upper group unit 9011 and the lower group unit 9012 may be simultaneously pre-assembled in the photosensitive path of the photosensitive element 10; and then the focusing mechanism 80 is used to The lower group unit 9012 and/or the upper group unit 9011 are directly adjusted such that the pre-assembled fixed focus camera module meets predetermined imaging requirements; the lower group unit is further passed through the glue layer 40 The 9012 is fixed to the integral base 3000, and the upper group unit 9011 is fixed to the lower group unit 9012 by the bonding medium 9013. More specifically, the upper group unit 9011 and the lower group unit 9012 are pre-assembled to the integrated base 3000; further, the inner sleeve of the lens holding device 81 of the focusing mechanism 80 is passed The barrel 811 detachably fixes the lower group unit 9012, the inner sleeve 811 is adjusted by the outer bracket 812, thereby adjusting the lower group unit 9012; further, when the lower group unit 9012 is adjusted After the predetermined requirement is reached, the lower group unit 9012 and the integrated base 3000 are fixed by the glue layer 40; further, the inner sleeve 811 is disengaged from the lower group unit by adjusting the outer bracket 812 9012. Further, the inner sleeve 811 of the lens holding device 81 of the focusing mechanism 80 detachably fixes the upper group unit 9011, and the inner sleeve 811 is adjusted by the outer bracket 812. Adjusting the upper group unit 9011; further, fixing the upper group unit 9011 and the lower group unit 9012 by the adhesive 9013; further, by adjusting the outer bracket 812 The sleeve 811 is separated from the upper group Element 9011, whereby the fixed-focus camera module.

For example, in another manner, a plurality of the upper group unit 9011 and the lower group unit 9012 may be assembled into a complete multi-group lens, and the multi-group is adopted by the bonding medium 9013. The lens is fixed to the lower group unit 9012; then the multi-group lens 90 is directly adjusted by the focusing mechanism 80, so that the pre-assembled fixed-focus camera module meets predetermined imaging requirements; The glue layer 40 fixes the multi-group lens to the integrated base 3000.

Correspondingly, with reference to FIG. 25, the present invention provides a focusing method 900 for a telephoto camera module, which includes the following steps: a step 910 of pre-assembling an optical lens: pre-assembling an optical lens 20 into an integrated base 3000, wherein The optical lens 20 is exposed on the outside of the integrated base 30. The optical lens 20 is located on a photosensitive path of a photosensitive element 10 assembled on a circuit board 50 to form a pre-assembled camera module; Step 920: The pre-assembled camera module performs a shooting operation to obtain a test image; and a focusing step 930: adjusting a relative position between the optical lens 20 and the integrated base 3000 based on the test image until The pre-assembled camera module outputs the required clear image; and the step 940 of completing the module assembly: fixing the optical lens 20 and the integrated base 3000 to complete the focusing operation and obtaining a certain focus for completing the assembly Camera module.

Referring to FIG. 26, the present invention further provides a method 2100 for adjusting a relative position between the optical lens 20 and the photosensitive element 10 of a fixed-focus camera module, wherein the focusing method 2100 includes the following steps: Step 2110, (I Generating a focus signal by a computing device 70 by analyzing the image captured by the pre-assembled camera module; and step 2120, (II) by the focus mechanism 80 based on the focus signal, through the tone A lens holding device 81 of the focus mechanism 80 fixes the optical lens 20 and a photosensitive element holding device 82 outside the optical lens 20 of the fixed focus camera module to directly or indirectly hold the integrated base 3000, and adjusts the The relative positions of the optical lens 20 and the integrated base 3000 adjust the relative positions of the optical lens 20 and the photosensitive element 10 to perform a focusing operation on the pre-assembled camera module.

Further, before the step (I), further comprising the steps of: maintaining the optical lens 20 in a photosensitive path of the photosensitive element 10; and photographing the optical lens 20 after the photosensitive element 10 is powered A test plate of the optical path obtains the image associated with the test plate.

Further, in the step (I), the method further includes the steps of: receiving, by a receiving module 71, the image captured by the fixed focus camera module; analyzing the image by an analysis module 72; The focusing signal is generated by a data generating module 73 based on the analysis result of the analyzing module 72, so that the focusing mechanism 80 performs the adjustment of the focusing camera module based on the focusing signal. Focus operation.

Further, in the above method, the photosensitive member 10 is mounted on a wiring board 50 which is packaged on an integrated base 3000, and the photosensitive member holding device 82 is fixed by the integral base 3000 or the fixing base. The manner in which the wiring board 50 is described is such that the position of the photosensitive element 10 is fixed.

Those skilled in the art should understand that the embodiments of the present invention described in the above description and the accompanying drawings are merely by way of illustration and not limitation.

The object of the invention has been achieved completely and efficiently. The present invention has been shown and described with respect to the embodiments of the present invention, and the embodiments of the present invention may be modified or modified without departing from the principles.

Claims (41)

 The focusing method of the fixed-focus camera module is characterized in that it comprises the following steps: (A) pre-assembling an optical lens on a lens holder, wherein the optical lens is exposed outside the lens holder, the optical lens a photosensitive path of a photosensitive element assembled on a circuit board to form a pre-assembled camera module; (B) the pre-assembled camera module performs a shooting operation to obtain a test image; (C) based on the The test image adjusts a relative position between the optical lens and the lens holder by a lens holding device until the pre-assembled camera module outputs a desired clear image; and (D) the optical lens and The lens holder is fixed to complete the focusing operation and obtain a certain focus camera module that is assembled.    The focusing method of the fixed focus camera module according to the first aspect of the invention, wherein the lens holding device rotationally adjusts a relative position between the optical lens and the lens holder by a screw structure.    The focusing method of the fixed focus camera module of claim 1, wherein the lens holding device comprises an inner sleeve and an outer bracket, the inner sleeve detachably fixing the optical lens, The outer bracket surrounds the outer sleeve for operating the inner sleeve to perform a focusing operation on the optical lens.    The focusing method of the fixed focus camera module according to claim 3, wherein the inner sleeve and the outer bracket are screwed.    The focusing method of the fixed focus camera module according to claim 3, wherein the inner sleeve has an external thread structure, the outer bracket has an internal thread structure, and the inner sleeve is The externally threaded structure and the internal thread structure of the outer bracket have the same pitch.    The focusing method of the fixed focus camera module according to claim 5, wherein the outer lens of the optical lens has an external thread structure, and the inner sleeve has an internal thread structure, and the optical lens is The externally threaded structure and the internal thread structure of the inner sleeve have the same pitch.    The focusing method of the fixed focus camera module according to claim 1, wherein the lens holding device is engaged with an outer peripheral side of the optical lens to hold the optical lens.    The focusing method of the fixed focus camera module of claim 7, wherein the lens holding device fixes the optical lens from a top of the optical lens.    The focusing method of the fixed focus camera module according to claim 1, wherein the fixing manner of the lens holding device and the optical lens is selected from the group consisting of a thread, a limit, a buckle, a UV dissociation glue, and a heat fusion. And one of vacuum adsorption.    The focusing method of the fixed focus camera module according to any one of the preceding claims, wherein the optical lens and the lens holder are dispensed, and the optical is determined The lens and the position of the lens holder are then cured to form a sealed glue layer between the optical lens and the lens holder.    The focusing method of the fixed focus camera module according to any one of the preceding claims, wherein the optical lens and a filter element are dispensed, and the optical is determined The lens and the position of the lens holder are then cured to form a sealed glue layer between the optical lens and the lens holder.    The focusing method of the fixed focus camera module according to claim 10, wherein the step (A) further comprises the steps of: sizing on the lens holder by dispensing; and A lower end surface of the optical lens is attached to the lens holder such that glue forms the glue layer between the optical lens and the lens holder.    The focusing method of the fixed focus camera module according to claim 10, wherein in the step (C), the position of the lens holder is fixed, and the adjustment is performed by adjusting the optical lens. The relative positions of the optical lens and the lens holder are adjusted to adjust the relative positions of the optical lens and the photosensitive element.    The focusing method of the fixed focus camera module according to claim 10, wherein in the step (C), the position of the optical lens is fixed, and the position of the lens holder is adjusted. A relative position of the optical lens and the lens holder is adjusted to adjust a relative position of the optical lens and the photosensitive element.    The focusing method of the fixed focus camera module according to claim 10, wherein the optical lens and a filter element are respectively attached to the outer side and the inner side of the top end of the lens holder.    The focusing method of the fixed focus camera module of claim 15, wherein the top end of the lens holder has an outer groove, and the glue layer directly encapsulates the optical lens on the lens holder. The outer groove, wherein the top end of the lens holder further has an inner groove, and the filter element is encapsulated in the inner groove of the lens holder.    The focusing method of the fixed-focus camera module according to claim 10, further comprising the steps of: generating, by a computing device, a focus signal by analyzing an image captured by the pre-assembled camera module; And adjusting the position of the optical lens by the lens holding device to adjust a relative position of the optical lens and the photosensitive wafer to perform a focusing operation on the fixed focus camera module based on the focus signal.    The focusing method of the fixed focus camera module according to any one of the preceding claims, wherein the optical lens comprises at least two group units, each of the group units being assembled in cooperation with each other The optical axis is consistent.    The focusing method of the fixed focus camera module according to claim 18, wherein each of the group units includes at least one carrying member and at least one lens, and the lens is mounted to the carrying member.    The focusing method of the fixed-focus camera module according to claim 19, wherein at least two group units are an upper group unit and a lower group unit, and the upper group unit is sleeved in the a lower group unit, wherein the upper group unit includes an upper carrier body and an extension wall, the lower group unit includes a lower carrier body, and the extension wall extends outward from the exterior of the upper carrier body, overlapping The lower carrier body of the lower group unit.    The focusing method of the fixed focus camera module according to claim 21, wherein the extending wall forms an annular brim structure, wherein the upper carrying body has a lower sleeve end located below the extending wall, The lower sleeve end is sleeved on the lower carrier body.    The focusing method of the fixed focus camera module according to claim 18, wherein the group unit is fixed by a bonding medium selected from the group consisting of UV glue, thermosetting glue, UV One or more of thermosetting glue and epoxy resin.    The focusing method of the fixed focus camera module according to claim 18, wherein each of the group units is directly exposed outside the lens holder.    The focusing method of the fixed focus camera module according to claim 18, wherein at least one of the group units is directly adjusted and fixed.    The focusing method of the fixed focus camera module according to any one of the preceding claims, wherein the lens holder is mounted on the circuit board or integrally formed on the circuit board to form a One base.    a focusing device for performing a focusing operation on a pre-assembled camera module, wherein the pre-assembled camera module comprises a circuit board assembled on a photosensitive element of the circuit board, and configured a lens holder of the circuit board and an optical lens pre-assembled to the lens holder, wherein the optical lens is exposed outside the lens holder, and the optical lens is located in a photosensitive path of the photosensitive element, wherein The focusing device includes: a computing device connected to the pre-assembled camera module to acquire image information captured by the pre-assembled camera module; and a focusing mechanism, wherein the focusing mechanism The invention includes a lens holding device and a photosensitive element fixing device, wherein the lens holding device holds the optical lens on a top side of the lens holder of the pre-assembled camera module, and the photosensitive element fixing device is used for direct or Holding the lens holder in an indirect manner, wherein the computing device adjusts the relative information of the optical lens and the lens holder through a thread structure by analyzing the image information captured by the pre-assembled camera module Positioning, thereby adjusting a relative position of the optical lens and the photosensitive wafer, so that the pre-assembled camera module outputs a desired clear image to complete a focusing operation.    The focusing device of claim 26, wherein the lens holding device comprises an inner sleeve and an outer bracket, the inner sleeve detachably fixing the optical lens, the outer bracket surrounding Outside the inner sleeve, the inner sleeve is operated to perform a focusing operation on the optical lens.    The focusing device of claim 27, wherein the inner sleeve and the outer bracket are threaded.    The focusing device according to claim 28, wherein said inner sleeve has an externally threaded structure, said outer bracket has an internally threaded structure, said externally threaded structure of said inner sleeve and said outer bracket The internal thread structure has the same pitch.    The focusing device of claim 29, wherein the outer lens of the optical lens has an externally threaded structure, the inner sleeve has an internal thread structure, and the external thread structure and the optical lens The internal thread structure of the inner sleeve has the same pitch.    The focusing device according to any one of claims 26 to 30, wherein the optical lens movement is driven by the lens holding device to complete the focusing operation.    The focusing device according to any one of claims 26 to 30, wherein the lens holding device is engaged with a peripheral side surface of the optical lens to hold the optical lens.    The focusing device according to any one of claims 26 to 30, wherein the lens holding device fixes the optical lens from a top of the optical lens.    The focusing method according to any one of claims 26 to 30, wherein the fixing manner of the lens holding device and the optical lens is selected from the group consisting of a thread, a limit, a buckle, a UV dissociation glue, One of hot melt and vacuum adsorption.    The focusing device according to any one of claims 26 to 30, wherein the computing device further generates a focusing signal, and the focusing mechanism is held by the lens based on the focusing signal The device and the photosensitive element fixing device adjust a relative position of the optical lens and the photosensitive wafer to perform the focusing operation on the pre-assembled camera module.    The focusing device according to any one of claims 26 to 30, wherein the optical lens comprises at least two group units, each of the group units being assembled in cooperation with each other, the optical axes being identical.    The focusing device of claim 36, wherein each of the group units includes at least one carrier member and at least one lens, the lens being mounted to the carrier member.    The focusing device of claim 37, wherein at least two group units are an upper group unit and a lower group unit, and the upper group unit is sleeved to the lower group unit, wherein The upper group unit includes an upper carrier body and an extension wall, and the lower group unit includes a lower carrier body, and the extension wall extends outward from the exterior of the upper carrier body to overlap the lower group The lower carrier body of the unit.    The focusing device of claim 38, wherein the extension wall forms an annular brim structure, wherein the upper carrier body has a lower sleeve end located below the extension wall, the lower sleeve end The sleeve is sleeved on the lower carrier body.    The focusing device of claim 36, wherein each of the group units is fixed by a bonding medium selected from the group consisting of UV glue, thermosetting glue, UV thermosetting glue, ring One or more of the oxyresin gums.    The focusing device of claim 18, wherein each of the group units is directly exposed to the outside of the lens holder, wherein at least one of the group units is directly adjusted and fixed by the lens holding device .