CN205809504U - Focus camera module and focussing mechanism thereof - Google Patents

Abstract

The utility model provides a fixed-focus camera module and a focusing device, wherein the focusing device includes a computing device and a focusing mechanism connected to the computing device, wherein the focusing mechanism further includes a first fixing member and a second fixing member, the first fixing member fixes the optical lens outside the optical lens of the fixed-focus camera module, and the second holder fixes the photosensitive chip of the fixed-focus camera module, Wherein the computing device generates a focusing signal by analyzing the image captured by the fixed-focus camera module, and the focusing mechanism adjusts the focusing signal through the first fixing member and the second fixing member based on the focusing signal. The relative position of the optical lens and the photosensitive chip is used to perform the focusing operation on the fixed-focus camera module.

Description

Fixed-focus camera module and its focusing device

technical field

The utility model relates to the field of optical imaging, in particular to a fixed-focus camera module and a focusing device thereof.

Background technique

With the rapid development of science and technology and the continuous improvement of people's economic level, smart phones, tablet computers, lamps, portable electronic devices and related technologies have been developed rapidly. Among them, the camera module used to help users take images has become a One of the standard configurations of portable electronic devices. Usually, in order to facilitate the user to take a selfie or make a video call through the portable electronic device, the portable electronic device is configured with a front-facing camera module. Since the fixed-focus camera module does not need to reserve space for its focusing once it is configured in a portable electronic device, in order to control the size of the portable electronic device, the fixed-focus camera module becomes the front camera module of the portable electronic device. Group's first choice.

In recent years, portable electronic devices are becoming more and more intelligent and thinner. This development trend of portable electronic devices requires adding smart components to make portable electronic devices have more and more powerful functions. On the one hand, it is required to reduce the size of each component of the portable electronic device to control the size of the portable electronic device. This development trend of the portable electronic device especially imposes strict requirements on the size of the fixed-focus camera module. Although the fixed-focus camera module does not need to reserve space for air supply and focus adjustment after it is configured in a portable electronic device, it still needs to be focused during the packaging process of the fixed-focus camera module to ensure that the fixed-focus camera module image quality.

1 is a prior art fixed-focus camera module, which includes a photosensitive chip 10P, an optical lens 20P and a base 30P, wherein the base 30P includes a lens holder 31P and a lens barrel 32P, the The lens barrel 32P integrally extends from the lens base 31P, wherein the photosensitive chip 10P is set on the lens base 31P, and the optical lens 20P is set on the lens barrel 32P, so that the optical lens 20P is located on the The photosensitive path of the photosensitive chip 10P. In the prior art fixed-focus camera module, the optical lens 20P is fixed by the lens barrel 32P and the optical lens 20P is kept at a position after focusing. The arrangement of the lens barrel 32P 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 installed inside the lens barrel 32P, when installing the optical lens 20P and the lens barrel 32P or adjusting the position of the optical lens relative to the lens barrel 32P to In the process of realizing the focusing of the fixed-focus camera module, the outer surface of the optical lens 20P and the inner surface of the lens barrel 32P will cause friction between the outer surface of the optical lens 20P and the inner surface of the lens barrel 32P. The inner surface of the 32P produces some particles and other pollutants, which will be retained inside the fixed-focus camera module. Even after the fixed-focus camera module is packaged, these particles and other pollutants cannot be removed. Take it out, with the passage of time and the impact of the outside world on the fixed-focus camera module, some particles and other pollutants will enter the optical path of the optical lens 20P, and can be imaged on the photosensitive chip 10P, so that Traveling in a situation that causes dirty spots leads to a reduction in the imaging quality of the fixed-focus camera module.

Utility model content

An object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the size of the fixed-focus camera module can be effectively reduced, so that the fixed-focus camera module is particularly suitable for being used in The pursuit of thinner and lighter electronic equipment.

One purpose of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the optical lens of the fixed-focus camera module is directly packaged in the lens holder, so that the fixed-focus camera module does not need to provide a lens barrel To fix the optical lens and the mirror holder, that is, there is no need to arrange 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 fixed-focus camera module and its focusing device, wherein the optical lens is directly packaged in the lens holder, so as to effectively reduce the height of the camera module.

An object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the focusing device includes a focusing mechanism, and the focusing mechanism adjusts the optical lens by fixing the outside of the optical lens. The position of the lens relative to the photosensitive chip of the fixed-focus camera module, thereby preventing the solid particle pollutants generated when the focusing mechanism fixes the optical lens from entering the interior from the outside of the fixed-focus camera module, to ensure The imaging quality of the fixed-focus camera module.

One object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein a glued layer is formed between the optical lens and the mirror base for packaging the optical lens on the mirror seat.

An object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the glued layer is used to seal the joint between the optical lens and the mirror holder to prevent During the process of performing focusing on the fixed-focus camera module, the solid particle pollutants generated on the outer surface of the optical lens pass through the connection between the optical lens and the mirror base, and are released from the fixed-focus camera module. The outside goes inside.

One object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the glued layer is used to seal the connection between the optical lens and the mirror base to prevent external pollutants or light from passing through the The joint between the optical lens and the mirror base enters the inside from the outside of the fixed-focus camera module.

An object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the glued layer is used to improve the flatness of the optical lens and the mirror holder, so that the central axis of the optical lens and the The central axes of the mirror bases coincide 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 and its focusing device, wherein after the fixed-focus camera module is packaged, the fixed-focus camera module can be cleaned by cleaning the fixed-focus camera module. Removal of solid particle pollutants on the outside of the camera module.

An object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the fixed-focus camera module does not need to provide a lens barrel. In this way, the product raw materials of the fixed-focus camera module can be reduced. cost and technical difficulty, so as to improve the product competitiveness of the fixed-focus camera module.

An object of the present invention is to provide a fixed-focus camera module and its focusing device, wherein the mirror base provides a first packaging groove for accommodating a filter element, thereby reducing the height of the fixed-focus camera module .

An object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the mirror base provides a second packaging groove for the optical lens to be packaged, thereby reducing the cost of the fixed-focus camera module. high.

An object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein the focus device provides a computing device, and the computing device can analyze the images obtained by the fixed-focus camera module. The fixed-focus camera module performs a focusing operation.

An object of the present invention is to provide a fixed-focus camera module and its focusing device, wherein the computing device can generate a focus signal after analyzing the images obtained by the fixed-focus camera module, and the focus mechanism The focusing signal is executed to perform a focusing operation on the fixed-focus camera module by changing the relative position of the optical lens and the photosensitive chip.

An object of the present utility model is to provide a fixed-focus camera module and its focusing device, wherein after the focusing device performs a focusing operation on the fixed-focus camera module, the glued layer or glue is cured to achieve The optical lens is kept at the position after focusing, so as to make the fixed-focus camera module.

The fixed-focus camera module of the present utility model includes a photosensitive chip, an optical lens and a mirror base, the photosensitive chip is directly or indirectly arranged on one side of the mirror base, and the optical lens is directly packaged on the other side of the mirror seat, and the optical lens is held in the photosensitive path of the photosensitive chip. The light reflected by the object can enter the interior of the fixed-focus camera module from the optical lens to be received by the photosensitive chip and undergo photoelectric conversion to generate an image (such as an image or video) associated with the object. That is to say, there is no need to arrange any components around the optical lens of the fixed-focus camera module of the present invention, thereby reducing the size of the head of the fixed-focus camera module. The size of the fixed-focus camera module, when the fixed-focus camera module is applied to electronic equipment, due to the reduction in the size of the fixed-focus camera module, more space can be reserved for other components of the electronic device , so that the electronic device can conform to the development trend of intelligence and lightness.

The focusing device of the present utility model is used for performing a focusing operation on the fixed-focus camera module during the process of the fixed-focus camera module being packaged, so as to ensure the imaging quality of the fixed-focus camera module. The focusing device includes a computing device and a focusing mechanism connected to the computing device, the focusing mechanism further includes a first fixing part and a second fixing part, and the first fixing part is used for The optical lens is fixed outside the optical lens of the fixed-focus camera module, and the second fixing member is used to fix the lens holder of the fixed-focus camera module. In the process of packaging the fixed-focus camera module, the optical lens and the photosensitive chip packaged in the mirror seat are kept in a general position, so as to take images through the fixed-focus camera module, for example, by The fixed-focus camera module captures an image of a test target plate, and secondly, the computing device analyzes the image to generate a focus signal, and the focus mechanism passes through the first fixed signal based on the focus signal. The relative position of the optical lens and the photosensitive chip is changed by the part and the second fixing part, so as to complete the focusing operation of the fixed-focus camera module. It is worth mentioning that the focusing signal includes the deviation angle and displacement of the optical lens and the photosensitive chip, for example, the focusing signal includes the flatness and distance between the optical lens and the photosensitive chip The magnitude by which it should be adjusted, etc.

The focusing mechanism fixes the optical lens on the outside of the optical lens, which can prevent the solid particle contamination generated on the outer surface of the optical lens from entering the optical lens when the optical lens is fixed by the first fixing member. The inside of the fixed-focus camera module is used to improve the imaging quality of the fixed-focus camera module. In addition, the focusing mechanism fixes the optical lens on the outside of the optical lens, which is beneficial to reduce the technical difficulty and cost when performing the focusing operation on the fixed-focus camera module. Further, the adhesive layer arranged or formed between the optical lens and the mirror base is used to seal the connection between the optical lens and the mirror base, so as to prevent solid particle pollutants from passing through the The connection between the optical lens and the mirror base enters from the outside of the fixed-focus camera module, thereby improving the imaging quality of the fixed-focus camera module.

According to the utility model, the fixed-focus camera module capable of achieving the foregoing and other purposes and advantages includes:

a circuit board;

an optical lens;

a photosensitive chip, wherein the photosensitive chip is mounted on the circuit board; and

A mirror base, wherein the circuit board is packaged on the lower side of the mirror base, the lower end surface of the optical lens is packaged on the upper side of the mirror base, and the optical lens is held on the photosensitive chip photosensitive path.

According to an embodiment of the present invention, the fixed-focus camera module further includes a glue layer, wherein the glue layer is arranged or formed between the mirror holder and the optical lens, so that by the glue A layer seals the junction of the optical lens and the mirror mount.

According to an embodiment of the present invention, the mirror base has a second packaging groove, and the lower end surface of the optical lens is packaged in the second packaging groove of the mirror base.

According to an embodiment of the present invention, the mirror base has a second packaging groove, and the adhesive layer is used to seal the lower end surface of the optical lens in the second packaging groove of the mirror base.

According to an embodiment of the present invention, the fixed-focus camera module further includes a filter element, wherein the filter element is mounted on the circuit board, and the filter element is located between the optical lens and the between the photosensitive chips.

According to an embodiment of the present invention, the fixed-focus camera module further includes a filter element, wherein the filter element is attached to the lens holder, and the filter element is located between the optical lens and the photosensitive between chips.

According to an embodiment of the present invention, the mirror base has a first packaging groove, and the filter element is attached to the first packaging groove of the mirror base.

According to another aspect of the present utility model, the present utility model provides a focusing device, which is used for performing a focusing operation on a packaged fixed-focus camera module, wherein the focusing device includes:

a computing device; and

A focus adjustment mechanism, wherein the focus adjustment mechanism is connected to the computing device, wherein the focus adjustment mechanism further includes a first fixing member and a second fixing member, the first fixing member is on the fixed focus The outside of the optical lens of the camera module fixes the optical lens, and the second fixing member fixes the photosensitive chip of the fixed-focus camera module, wherein the computing device generates an image by analyzing images captured by the fixed-focus camera module A focusing signal, the focusing mechanism adjusts the relative position of the optical lens and the photosensitive chip through the first fixing part and the second fixing part based on the focusing signal, so as to perform the positioning The focus operation of the focus camera module.

According to an embodiment of the present invention, the computing device includes a receiving module, an analyzing module, and a data generating module that are communicably connected, the receiving module receives the image captured by the fixed-focus camera module, the The analysis module analyzes the image, and the data generation module generates the focusing signal based on the analysis result of the analysis module, so that the focus adjustment mechanism can execute the fixed-focus camera module based on the focus signal focus operation.

According to an embodiment of the present invention, the fixing method of the first fixing member and the optical lens is selected from one of thread, limit, buckle, UV release glue and hot melt.

Description of drawings

Fig. 1 is an exploded schematic view of the prior art.

Fig. 2 is a schematic perspective view of a fixed-focus camera module according to a preferred embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of the fixed-focus camera module according to the above-mentioned preferred embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of a variant implementation of the fixed-focus camera module according to the above-mentioned preferred embodiment of the present invention.

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

FIG. 6 is a schematic block diagram of a manufacturing method of the fixed-focus camera module according to the above-mentioned preferred embodiment of the present invention.

FIG. 7 is a schematic block diagram of another manufacturing method of the fixed-focus camera module according to the above-mentioned preferred embodiment of the present invention.

Fig. 8 is a schematic block diagram of a focusing device according to the above preferred embodiment of the present invention.

FIG. 9 is a conceptual schematic diagram of the focusing process of the fixed-focus camera module by the focusing device according to the above-mentioned preferred embodiment of the present invention.

FIG. 10 is another conceptual schematic diagram of the focusing process of the fixed-focus camera module by the focusing device according to the above-mentioned preferred embodiment of the present invention.

FIG. 11 is a block diagram of a flow chart of the focusing method of the fixed-focus camera module according to the above-mentioned preferred embodiment of the present invention.

detailed description

The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variants, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

Referring to Fig. 2 and Fig. 3 of the accompanying drawings of the utility model, a fixed-focus camera module according to a preferred embodiment of the utility model is illustrated, wherein the fixed-focus camera module includes a photosensitive chip 10, an optical The lens 20 and a mirror holder 30 , wherein the optical lens 20 is directly packaged in the mirror holder 30 , and the optical lens 20 is held in the photosensitive path 20 of the photosensitive chip 10 . The light reflected by the object can enter the interior of the fixed-focus camera module from the optical lens 20, and be received by the photosensitive chip 10 and undergo photoelectric conversion to generate an image (such as an image or video) associated with the object. .

It is worth mentioning that, in the fixed-focus camera module of the present invention, the type of the photosensitive chip 10 and the type of the optical lens 20 are not limited. For example, in an exemplary illustration, the photosensitive chip 10 may be a charge coupled device (Charge Coupled Device, CCD), or the photosensitive chip 10 may be a metal oxide semiconductor element (Complementary Metal-Oxide Semiconductor, CMOS), Or the photosensitive chip 10 can be a silicon photonics chip. That is to say, in the fixed-focus camera module of the present invention, the photosensitive chip 10 refers to any optical element capable of realizing photoelectric conversion after receiving light reflected by an object. Correspondingly, the optical lens 20 refers to any optical element that can allow the light reflected by the object to enter the inside 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 . That is to say, the fixed-focus camera module of the present utility model does not need to provide the lens barrel structure of the prior art. In this way, the volume of the fixed-focus camera module around the optical lens 20 can be reduced. , so that when the fixed-focus camera module is installed in an electronic device, the fixed-focus camera module can occupy as little space as possible in the electronic device, so that the electronic device can reserve more space for other components to be installed. In a specific example, a space of at least 0.2mm can be saved in any direction around the optical lens 20, that is to say, the head of the fixed-focus camera module (that is, the optical lens 20 and the around it) can save a space of at least 0.4mm, which is of great significance for the fixed-focus camera module to be applied to intelligent, thinner and lighter electronic devices.

In addition, the fixed-focus camera module of the present invention does not need to provide the lens barrel structure of the prior art, but the optical lens 20 is directly packaged in the lens holder 30. In this way, the cost of raw materials can be reduced. It is used to reduce the cost of the fixed-focus camera module, thereby improving the product competitiveness of the fixed-focus camera module.

In the process of packaging the fixed-focus camera module of the present utility model, the optical lens 20 is adjusted relative to the photosensitive The position of the chip 10 is used 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 produce pollutants such as solid particles, the solid particles and other pollutants will not enter the interior of the fixed-focus camera module, so as to The solid particles and other pollutants are prevented from causing dirty spots, so as to ensure the imaging quality of the fixed-focus camera module. After the solid particles and other pollutants are generated, the solid particles and other pollutants will at most adhere to the outer surface of the fixed-focus camera module, and after the fixed-focus camera module is packaged, it can be removed by cleaning Pollutants such as solid particles attached to the outer surface of the fixed-focus camera module are beneficial to ensure the imaging quality of the fixed-focus camera module during use when it is configured in the electronic device.

Further, as shown in FIG. 3 , the fixed-focus camera module includes a glued layer 40, wherein the glued layer 40 is located between the optical lens 20 and the mirror holder 30, for placing the optical lens 20 directly encapsulated in the mirror base 30 . It is worth mentioning that the adhesive layer 40 can not only connect the optical lens 20 and the mirror holder 30, but also can be used to seal the optical lens 20 and the mirror holder 30. The joint, thereby preventing pollutants such as solid particles or external pollutants or external light from entering the fixed-focus camera from the outside of the fixed-focus camera module through the joint between the optical lens 20 and the mirror base 30 The interior of the module is beneficial to ensure the imaging quality of the fixed-focus camera module.

In an embodiment of the fixed-focus camera module, the adhesive layer 40 can be formed separately, so that the adhesive layer 40 can be disposed between the optical lens 20 and the mirror holder 30 later. Preferably, the adhesive layer 40 can be semi-solidified, so that the adhesive layer 40 has viscosity and the thickness of the adhesive layer 40 at any position can be adjusted, and when the adhesive layer 40 is arranged at the Between the optical lens 20 and the mirror holder 30 and after the focusing of the fixed-focus camera module is completed, the adhesive layer 40 can be cured, so that the optical lens 20 can be guaranteed by the adhesive layer 40 is held in the focused position.

In another embodiment of the fixed-focus camera module, the glue layer 40 is formed at the junction of the optical lens 20 and the mirror holder 30 . Specifically, selectively dispensing at least one corresponding position of the optical lens 20 and the mirror holder 30, after the dispensing operation is completed, the lower end surface of the optical lens 20 is installed on the mirror seat 30, so that the glue is between the optical lens 20 and the mirror seat 30, and the fixed-focus camera module is focused, and the focus can be fixed on the outside of the optical lens 20 After the focusing is completed, the glue is cured to form the glued layer 40 between the optical lens 20 and the mirror holder 30 . Preferably, glue can be dispensed only at the corresponding position of the lens holder 30 to prevent the glue from polluting the optical lens 20 . More preferably, the glue can be cured by irradiating the glue with ultraviolet light (Ultraviolet Rays, UV light).

It is worth mentioning that after the glue dispensing operation is completed at the corresponding position of the mirror base 30, the glue can be semi-cured first, so as to prevent the glue from affecting the optical lens 20 in the process of packaging the optical lens 20 on the mirror base 30. The above optical lens 20 causes pollution. In other words, after the glue is applied to the lens base 30 by dispensing, the glue can be made into a semi-cured state first, so that the semi-cured glue has viscous and plasticity, and under the optical lens 20 After the end surface is installed on the mirror base 30 and the focus adjustment of the fixed-focus camera module is completed, the glue is cured to form the glued layer between the optical lens 20 and the mirror base 30 40 , so that on the one hand, the adhesive layer 40 keeps the optical lens 20 at the position after focusing, and on the other hand, the adhesive layer 40 seals the joint between the optical lens 20 and the mirror holder 30 .

In the process of packaging the fixed-focus camera module of the present invention, the adhesive layer 40 can improve the flatness of the optical lens 20 and the mirror holder 30, so that the central axis of the optical lens 20 can It coincides with the central axis of the photosensitive chip 10 to improve the imaging quality of the fixed-focus camera module. That is to say, the glued layer 40 can make up for the product error of the optical lens 20 and the product error of the mirror base 30 and the mounting error of the optical lens 20 and the mirror base 30, thereby improving the positioning. The imaging quality of the focal camera module.

2 and 3, the fixed-focus camera module further includes a circuit board 50, wherein the photosensitive chip 10 is mounted on the circuit board 50, and the circuit board 50 is packaged in the mirror holder 30 , so that the optical lens 20 and the photosensitive chip 10 correspond to each other. Preferably, the circuit board 50 may be a PCB circuit board (Printed Circuit Board, printed circuit board), so that after the photosensitive chip 10 is mounted on the circuit board 50, the circuit board 50 can hold the The flatness of the photosensitive chip 10. However, those skilled in the art can understand that the circuit board 50 can also be any structure that can connect the photosensitive chip 10 and other components of the electronic device, for example, the circuit board 50 can be an FPC circuit board (Flexible Printed Circuit, flexible circuit board), specifically, the circuit board 50 that is implemented as an FPC circuit board can be attached to a reinforcement (such as a metal reinforcement), and then the photosensitive chip 10 is attached to the reinforcing member, and the photosensitive chip 10 is connected to the circuit board 50, so that the photosensitive chip 10 can be flattened by the reinforcing member.

In the fixed-focus camera module of the present utility model, the photosensitive chip 10 can be fixed on the circuit board 50 at first, and then the photosensitive chip 10 can be connected to the circuit board 50 through a gold wire process. together to mount the photosensitive chip 10 on the circuit board 50 . It can be understood that the connection between the photosensitive chip 10 and the circuit board 50 by way of gold wire is only an exemplary description, in other examples, the photosensitive chip 10 can provide one or more chip soldering The circuit board 50 can provide one or more circuit board pads, and by welding the chip pads of the photosensitive chip 10 and the circuit board pads of the circuit board 50 together, the Mounting of the photosensitive chip 10 and the circuit board 50.

In addition, the fixed-focus camera module further includes a filter element 60, wherein the filter element 60 is arranged between the photosensitive chip 10 and the optical lens 20 to improve the fixed-focus camera The imaging quality of the module. The light reflected by the object enters the interior of the fixed-focus camera module from the optical lens 20, and is further received and photoelectrically converted by the photosensitive chip 10 after being filtered by the filter element 60 to generate associated images. That is to say, the filter element 60 can filter the stray light in the light reflected by the object entering the interior of the fixed-focus camera module from the optical lens 20, so as 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 an example of the present invention, the filter element 60 can be an infrared cut filter to filter the Infrared light in the light reflected by the object inside the module. In another example of the present invention, the filter element 60 may also be a fully transparent filter. In addition, the filter element 60 can also be adjusted, for example, the filter element 60 can be movably arranged on the mirror base 30, so that the fixed focus can be achieved by changing the position of the filter element 60 Camera modules are used in different usage environments.

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

Referring to FIG. 3 , the inside of the mirror base 30 is provided with a first packaging groove 31, wherein the filter element 60 is packaged in the first packaging groove 31 of the mirror base 30. In this way, it can effectively The height of the fixed-focus camera module is reduced as much as possible, so that the fixed-focus camera module is especially suitable for being applied to the electronic equipment that pursues thinner and lighter. In addition, the outside of the mirror base 30 is provided with a second package groove 32, wherein in one example, the optical lens 20 is directly packaged in the second package groove of the mirror base 30 through the adhesive layer 40 32. In another example, only the adhesive layer 40 may be located in the second packaging groove 32 of the mirror base 30. In this way, the height of the fixed-focus camera module can be further effectively reduced. Therefore, the fixed-focus camera module is particularly suitable for being applied to the electronic equipment that pursues lightness and thinness.

Referring to FIG. 4 is a modified implementation of the fixed-focus camera module, wherein the structure of the fixed-focus camera module in this embodiment of the present invention is different from the structure of the fixed-focus camera module in the above-mentioned preferred embodiment. The difference is where 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 arranged on the circuit board 50, and the filter element 60 covers the photosensitive chip 10. Preferably, the filter element 60 and the photosensitive chip 10 are directly attached together. After the circuit board 50 is packaged in the mirror holder 30 , the filter element 60 is held between the optical lens 20 and the photosensitive chip 10 .

Referring to FIG. 5 is another modified implementation of the fixed-focus camera module, wherein the structure of the fixed-focus camera module of this embodiment of the present invention is the same as that of the above-mentioned preferred embodiment. The difference lies in the location where 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 packaged outside the mirror holder 30, so that the filter element 60 is closer to the optical The lens 20 , and the filter element 60 packaged outside the lens holder 30 can be held between the optical lens 20 and the photosensitive chip 10 .

In the process of packaging the fixed-focus camera module of the present utility model, in step 1, the circuit board 50 and the photosensitive chip 10 can be fixed together first, and the circuit is connected through a gold wire process board 50 and the photosensitive chip 10 , so as to mount the photosensitive chip 10 on the circuit board 50 .

Step 2, the filter element 60 is packaged in the mirror base 30, for example, in the example shown in Figure 3 of the present utility model, the filter element 60 can be packaged in the mirror base 30 Inside the first package groove 31 . Those skilled in the art can understand that, in the process of packaging the fixed-focus camera module of the present invention, the step 1 and the step 2 may be in no particular order, or the step 1 and the Step 2 can be performed simultaneously.

Step 3, packaging the circuit board 50 on the mirror base 30 so that the filter element 60 corresponds to the photosensitive chip 10 mounted on the circuit board 50 .

Step 4, dispensing glue at the corresponding position of the mirror base 30 . It is worth mentioning that the amount of glue can be provided as required, for example, the amount of glue needs to ensure that it can contact the lower end surface of the optical lens 20 . It is worth mentioning that the amount of glue depends on the glue performance and the coating area.

Step 5, installing the optical lens 20 on the mirror holder 30, so that the glue is located between the optical lens 20 and the mirror holder 30, and ensuring that the optical lens 20 is in the photosensitive area of the photosensitive chip 10 path.

Step 6, adjusting the position of the optical lens 20 relative to the photosensitive chip 10 to adjust the focus of the fixed-focus camera module. Specifically, the photosensitive chip 10 is energized through the circuit board 50 so that the photosensitive chip 10 can output an image, and the focus of the fixed-focus camera module is adjusted according to the definition of the image. The way of focusing the fixed-focus camera module can be that the focusing mechanism adjusts the position of the optical lens 20 relative to the photosensitive chip 10 by clamping the outer surface of the optical lens 20, because The fixed-focus camera module of the present utility model realizes the focusing of the fixed-focus camera module outside the fixed-focus camera module, so that even if the focusing mechanism causes the optical lens 20 The solid particle pollutants are generated on the outer surface, and the solid particle pollutants will not enter the interior of the fixed-focus camera module, so as 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 chip 10 In other examples, the position of the photosensitive chip 10 relative to the optical lens 20 can also be adjusted by moving the mirror holder 30 .

Step seven, curing the glue to form the glued layer 40 between the optical lens 20 and the mirror holder 30 . It can be understood that, on the one hand, the adhesive layer 40 can be used to connect the optical lens 20 and the mirror holder 30, so that the optical lens 20 is kept in the photosensitive path of the photosensitive chip 10; The glued layer 40 can prevent external pollutants from entering the inside from the outside of the zoom camera module through the junction of the optical lens 20 and the mirror holder 30, and on the other hand, the glued layer 40 can prevent external light from coming into the interior. Through the connection between the optical lens 20 and the mirror base 30 , the zoom camera module enters from the outside to the inside. In addition, the glue layer 40 can also make up for the product error of the optical lens 20 and the product error of the mirror base 30 and the mounting error of the optical lens 20 and the mirror base 30, so as to prevent the optical lens 20 from There is a relative inclination with the photosensitive chip 10, which is beneficial to ensure the imaging quality of the fixed-focus camera module.

Referring to FIG. 6 , according to one aspect of the present invention, the present invention also provides a manufacturing method 600 of a fixed-focus camera module, wherein the manufacturing method 600 includes the following steps:

Step 610, (a) mounting a photosensitive chip 10 on a circuit board 50;

Step 620, (b) package the circuit board 50 in a mirror holder 30; and

Step 630, (c) directly package an optical lens 20 on the mirror holder 30, so that the optical lens 20 is kept in the photosensitive path of the photosensitive chip 10, thereby making the fixed-focus camera module.

Further, in the step (a), further include steps:

(a.1) fixing the photosensitive chip 10 to the circuit board 50; and

(a.2) Connecting the photosensitive chip 10 and the circuit board 50 by means of gold wires, so as to mount the photosensitive chip 10 on the circuit board 50 .

In one embodiment, before the step (b), it further includes the step of: encapsulating a filter element 60 in the mirror holder 30, and in the step (b), making the filter element 60 and The photosensitive chip 10 mounted on the circuit board 50 corresponds to that. Preferably, the mirror base 30 has a first packaging groove 31, and the filter element 60 is packaged in the first packaging groove 31 of the mirror base 30, so as to reduce the height of the fixed-focus camera module .

In another embodiment, before the step (b), a step is further included: packaging the filter element 60 on the circuit board 50 , wherein the filter element 60 covers the photosensitive element of the photosensitive chip 10 noodle.

Further, in the above method, an adhesive layer 40 is provided between the optical lens 20 and the mirror holder 30, so that after the focusing operation is performed on the fixed-focus camera module, the adhesive layer 40 solidified.

Further, in the above method, at least one of the optical lens 20 and the mirror holder 30 is dispensing glue, so that after the focusing operation is performed on the fixed-focus camera module, the glue is cured to The glue layer 40 is formed between the optical lens 20 and the mirror holder 30 . Preferably, the mirror base 30 has a second packaging groove 32, and the adhesive layer 40 directly encapsulates the optical lens 20 in the second packaging groove 32 of the mirror base 30, so as to reduce the fixed focus The height of the camera module.

According to another aspect of the utility model, the utility model also provides a manufacturing method of a fixed-focus camera module, wherein the manufacturing method includes the following steps:

(A) dispensing glue between a mirror base 30 and an optical lens 20, so that the glue closes the junction of the mirror base 30 and the optical lens 20; and

(B) Fix the optical lens 20 on the outside of the optical lens 20 by a focusing mechanism to adjust the position of the optical lens 20 relative to the mirror holder 30, wherein the focusing mechanism causes the optical lens to The solid particle pollutants produced on the outer surface of the lens 20 are stopped by the glue, so as to prevent the solid particle pollutants from entering the interior from the outside of the fixed-focus camera module through the junction of the mirror holder 30 and the optical lens 20, so as to The fixed-focus camera module is made.

Further, in the above method, after performing the focusing operation on the fixed-focus camera module, the glue is cured to form a glued layer 40 between the optical lens 20 and the mirror holder 30 .

According to another aspect of the utility model, the utility model also provides a manufacturing method of a fixed-focus camera module, wherein the manufacturing method includes the following steps:

(i) a glued layer 40 is set between a mirror base 30 and an optical lens 20, so that the glued layer 40 seals the junction of the mirror base 30 and the optical lens 20; and

(ii) Fix the optical lens 20 outside the optical lens 20 by a focusing mechanism to adjust the position of the optical lens 20 relative to the mirror holder 30, wherein the focusing mechanism causes the optical lens to The solid particle pollutants produced on the outer surface of the lens 20 are stopped by the glue layer, so as to prevent the solid particle pollutants from entering from the outside of the fixed-focus camera module through the junction of the mirror holder 30 and the optical lens 20 Inside, to make the fixed-focus camera module.

Referring to FIG. 7 , the present invention also provides a manufacturing method 700 of a fixed-focus camera module, wherein the manufacturing method 700 includes the following steps:

Step 710, (α) packaging a circuit board 50 mounted with a photosensitive chip 10 in a mirror holder 30;

Step 720, (β) forming or disposing a glued layer 40 between the mirror base 30 and an optical lens 20, so that the glued layer 40 closes the joint between the mirror base 30 and the optical lens 20; as well as

Step 730, (γ) fixing the optical lens 20 on the outside of the optical lens 20 to adjust the relative position of the optical lens 20 and the photosensitive chip 10 to make the fixed-focus camera module.

Referring to FIG. 8 to FIG. 10 are schematic diagrams of the process of performing a focusing operation on the fixed-focus camera module through the focusing device during the process of the fixed-focus camera module being packaged, wherein the focus device It includes a computing device 70 and a focusing mechanism 80 , wherein the focusing mechanism 80 is connected to the computing device 70 . Preferably, in one example, the computing device 70 and the focusing mechanism 80 may be communicatively connected through a wired connection, and in another example, the computing device 70 and the focusing mechanism 80 It can be communicatively connected in a wireless connection, for example, the computing device 70 and the focusing mechanism 80 can be wirelessly connected based on Bluetooth technology, Wi-Fi technology, network technology and the like.

The focusing mechanism 80 includes a first fixing part 81 and a second fixing part 82, wherein the first fixing part 81 can fix the optical lens 20 outside the optical lens 20, and the second fixing part The member 82 fixes the mirror base 30 . It is worth mentioning that the fixing method of the first fixing member 81 for fixing the optical lens 20 is not limited. Buckle, UV release glue or hot melt material and other ways to fix. Those skilled in the art can understand that, the fixing methods of the first fixing member 81 and the optical lens 20 listed above are only for illustration to illustrate the advantages and characteristics of the focusing device of the present invention. , but does not constitute a limitation on the content and scope of the focusing device of the present utility model.

In the process of packaging the fixed-focus camera module provided in a specific example of the present invention, the photosensitive chip 10 is fixed on the circuit board 50, and the photosensitive chip 10 and the The circuit board 50 is turned on so as to mount the photosensitive chip 10 on the circuit board 50 . Preferably, the circuit board 50 is a PCB circuit board, which can ensure the flatness of the photosensitive chip 10 . After the optical filter element 60 is packaged in the mirror base 30 , the circuit board 50 is packaged in the mirror base 30 so that the optical filter element 60 is located in the photosensitive path of the photosensitive chip 10 . Glue is dispensed at corresponding positions of the mirror base 30 so that the glue is coated on the mirror base 30 . Preferably, the amount of glue depends on the properties of the glue and the coating area. 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 mirror base 30 so that the lower end surface of the optical lens 20 is in contact with the glue, and at this moment, the optical lens 20 and the photosensitive chip 10 are in a substantially matching position.

The optical lens 20 is fixed on the outside of the optical lens 20 by the first fixing member 81, and the mirror holder 30 is fixed by the second fixing member 82, so that the optical lens 20 is held on the The photosensitive path of the photosensitive chip 10 . Preferably, in one embodiment, the glue can be semi-cured to prevent the fluid glue from contaminating the photosensitive path of the photosensitive chip 10 when the fixed-focus camera module is focused, for example, to prevent the fluid glue from When the fixed-focus camera module is focused, the optical lens 20 or the filter element 60 is polluted or the photosensitive path of the photosensitive chip 10 is blocked.

A test standard plate is arranged on the front portion of the optical lens 20, and the photosensitive chip 10 is powered by the circuit board 50, so that the light reflected by the test standard plate can enter the optical lens 20 from the optical lens 20. The inside of the fixed-focus camera module is used to receive and photoelectrically convert the light by the photosensitive chip 10 after being filtered by the filter element 60 to generate an image related to the object. Subsequently, the image is received by the computing device 70, and the computing device 70 can generate a focusing signal by analyzing the image, wherein the focusing signal includes the optical lens 20 and the photosensitive chip 10 Deviation angle and displacement, for example, the focusing signal includes the flatness of the optical lens 20 and the photosensitive chip 10 , the magnitude of the distance that should be adjusted, and the like.

The focusing mechanism 80 receives the focusing signal and adjusts the optical lens 20 and is packaged in the lens holder 30 through the first fixing member 81 and the second fixing member 82 based on the focusing signal. The position of the photosensitive chip 10 in order to complete the focusing operation of the fixed-focus camera module. In one embodiment, the second fixing part 82 can keep the mirror base 30 at an initial position, and the first fixing part 81 can make the position of the optical lens 20 be adjusted. In another embodiment, the first fixing member 81 can keep the optical lens 20 at an initial position, and the second fixing member 82 can adjust the position of the mirror holder 30 . Nevertheless, in another embodiment, the first fixing member 81 and the second fixing member 82 can adjust the positions of the optical lens 20 and the mirror holder 30 synchronously.

After performing the focusing operation on the fixed-focus camera module, the glue is cured to form the glued layer 40 between the optical lens 20 and the mirror holder 30, wherein the glued layer 40 is used to seal The junction of the optical lens 20 and the mirror holder 30 is to prevent the solid particle pollutants produced on the outer surface of the optical lens 20 from passing through the optical lens 20 when the first fixing member 81 fixes the optical lens 20 The connection between the optical lens 20 and the mirror base 30 enters from the outside of the fixed-focus camera module, which is beneficial to improve 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 focusing signal by analyzing the image, for example, the computing device 70 can be a desktop computer, a notebook computer, a server, a digital assistant, etc. A device or a combination of two or more of the above-mentioned smart devices or any device that includes the above-mentioned smart devices.

Preferably, the computing device 70 includes a receiving module 71, an analyzing module 72, and a data generating module 73 that are communicably connected, and the receiving module 71 can receive the image captured by the fixed-focus camera module, so The analyzing module 72 analyzes the image, and the data generating module 73 generates the focusing signal based on the analysis result of the analyzing module 72, wherein the focusing mechanism communicably connected to the data generating module 73 80 can adjust the position of the optical lens 20 and the photosensitive chip 10 packaged in the mirror holder 30 through the first fixing member 81 and the second fixing member 82 based on the focusing signal, so as to complete The focusing operation of the fixed-focus camera module.

In the process of packaging the fixed-focus camera module provided in another specific example of the present invention, the photosensitive chip 10 is fixed on the circuit board 50, and the photosensitive circuit 10 is fixed to the Conducting with the circuit board 50 to realize mounting the photosensitive chip 10 on the circuit board 50 . The filter element 60 is packaged in the mirror holder 30 . Glue is dispensed at corresponding positions of the mirror base 30 so that the glue is coated on the mirror base 30 . The optical lens 20 is arranged on the mirror base 30 so that the lower end surface of the optical lens 20 is in contact with the glue. The glue is fixed to form the glue layer 40 between the optical lens 20 and the mirror base 30 , wherein the glue layer 40 is used to seal the joint between the optical lens 20 and the mirror base 30 . Glue is dispensed at the corresponding position of the mirror base 30, so that the glue is coated on the mirror base 30, and the circuit board 50 is arranged on the mirror base 30. At this time, the optical lens 20 and the The photosensitive chip 10 is in approximately matching position.

The optical lens 20 is fixed on the outside of the optical lens 20 by the first fixing member 81, and the circuit board 50 is fixed by the second fixing member 82, so that the optical lens 20 is held on the The photosensitive path of the photosensitive chip 10 .

The test standard plate is arranged on the front portion of the optical lens 20, and the photosensitive chip 10 is powered by the circuit board 50, so that the light reflected by the test standard plate can enter from the optical lens 20 Inside the fixed-focus camera module, the light is received by the photosensitive chip 10 after being filtered by the filter element 60 and photoelectrically converted to generate an image related to the object. Subsequently, the image is received by the computing device 70, and the computing device 70 can generate a focusing signal by analyzing the image, wherein the focusing signal includes the optical lens 20 and the photosensitive chip 10 Deviation angle and displacement, for example, the focusing signal includes the flatness of the optical lens 20 and the photosensitive chip 10 , the magnitude of the distance that should be adjusted, and the like.

The focusing mechanism 80 receives the focusing signal and adjusts the positions of the optical lens 20 and the photosensitive chip 10 through the first fixing member 81 and the second fixing member 82 based on the focusing signal, to complete the focusing operation on the fixed-focus camera module. In one embodiment, the second fixing member 82 can keep the photosensitive chip 10 at an initial position, and the first fixing member 81 can adjust the position of the optical lens 20 . In another embodiment, the first fixing member 81 can keep the optical lens 20 at an initial position, and the second fixing member 82 can adjust the position of the photosensitive chip 10 . Nevertheless, in another embodiment, the first fixing member 81 and the second fixing member 82 can adjust the positions of the optical lens 20 and the photosensitive chip 10 synchronously. After the focusing operation is performed on the fixed-focus camera module, the glue is cured to encapsulate the circuit board 50 and the mirror base 30 .

Referring to FIG. 11 , the present invention also provides a focusing method 1100 for a fixed-focus camera module, wherein the focusing method 1100 includes the following steps:

Step 1110, (1) generate a focusing signal by a computing device 70 by analyzing the image captured by the fixed-focus camera module; and

Step 1120, (II) by a focus adjustment mechanism 80 based on the focus adjustment signal, through a first fixing member 81 of the focus adjustment mechanism 80 to fix the outside of the optical lens 20 of the fixed focus camera module Optical lens 20 and a second fixing member 82 fix the mode of photosensitive chip 10 of described fixed-focus camera module, adjust the relative position of described optical lens 20 and described photosensitive chip 10, with described fixed-focus camera module The group performs the focusing operation.

Further, further comprising steps before said step (1):

making the optical lens 20 held in the photosensitive path of the photosensitive chip 10; and

After the photosensitive chip 10 is powered, a test target plate located in the optical path of the optical lens 20 is photographed to obtain the image associated with the test target plate.

Further, in described step (1), further comprise steps:

The image captured by the fixed-focus camera module is received by a receiving module 71;

analyzing the image by an analysis module 72; and

A data generation module 73 generates the focus signal based on the analysis result of the analysis module 72, so that the focus mechanism 80 can perform a focus operation on the fixed-focus camera module based on the focus signal. .

Further, in the above method, the photosensitive chip 10 is mounted on a circuit board 50 packaged in a mirror base 30, and the second fixing member 82 fixes the mirror base 30 by fixing the Described photosensitive chip 10.

Those skilled in the art should understand that the above description and the embodiments of the present invention shown in the drawings are only examples and do not limit the present invention.

The purpose of this utility model has been fully and effectively achieved. The functions and structural principles of the present utility model have been shown and explained in the embodiments, and the implementation of the present utility model can have any deformation or modification without departing from the principle.

Claims (10)

1. The fixed-focus camera module is characterized in that it includes: a circuit board; an optical lens; a photosensitive chip, wherein the photosensitive chip is mounted on the circuit board; and A mirror base, wherein the circuit board is packaged on the lower side of the mirror base, the lower end surface of the optical lens is packaged on the upper side of the mirror base, and the optical lens is held on the photosensitive chip photosensitive path. 2. The fixed-focus camera module according to claim 1, further comprising a glue layer, wherein the glue layer is arranged or formed between the mirror holder and the optical lens, so that by the glue A layer seals the junction of the optical lens and the mirror mount. 3. The fixed-focus camera module according to claim 1, wherein the mirror base has a second packaging groove, and the lower end surface of the optical lens is packaged in the second packaging groove of the mirror base. 4. The fixed-focus camera module according to claim 2, wherein the mirror base has a second packaging groove, and the adhesive layer is used to encapsulate the lower end surface of the optical lens in the said mirror base. Second package slot. 5. The fixed-focus camera module according to any one of claims 1, 2, 3 or 4, further comprising a filter element, wherein the filter element is mounted on the circuit board, and the filter element The optical element is located between the optical lens and the photosensitive chip. 6. The fixed-focus camera module according to any one of claims 1, 2, 3 or 4, further comprising a filter element, wherein the filter element is attached to the mirror holder, and the filter element Located between the optical lens and the photosensitive chip. 7. The fixed-focus camera module according to claim 6, wherein the mirror base has a first packaging groove, and the filter element is attached to the first packaging groove of the mirror base. 8. A focusing device, which is used to perform a focusing operation on a packaged fixed-focus camera module, characterized in that it includes: a computing device; and A focus adjustment mechanism, wherein the focus adjustment mechanism is connected to the computing device, wherein the focus adjustment mechanism further includes a first fixing member and a second fixing member, the first fixing member is on the fixed focus The outside of the optical lens of the camera module fixes the optical lens, and the second fixing member fixes the photosensitive chip of the fixed-focus camera module, wherein the computing device generates an image by analyzing images captured by the fixed-focus camera module A focusing signal, the focusing mechanism adjusts the relative position of the optical lens and the photosensitive chip through the first fixing part and the second fixing part based on the focusing signal, so as to perform the positioning The focus operation of the focus camera module. 9. The focusing device according to claim 8, wherein the computing device includes a receiving module, an analyzing module and a data generating module that are communicably connected, and the receiving module receives the images captured by the fixed-focus camera module. The image, the analysis module analyzes the image, and the data generation module generates the focus signal based on the analysis result of the analysis module, so that the subsequent focus adjustment mechanism can execute the focus adjustment signal based on the focus signal. The focusing operation of the fixed-focus camera module is described. 10. The focusing device according to claim 8 or 9, wherein the fixing method of the first fixing member and the optical lens is selected from one of thread, limit, buckle, UV dissociation glue and hot melt kind.