WO2022042096A1 - Camera module and assembly method thereof - Google Patents

Abstract

The present application provides a camera module, comprising a plurality of module parts. The module part comprises at least one optical element; the optical element is a reflective element, a lens or a photosensitive chip; the plurality of module parts are sequentially arranged along a horizontal direction; any two adjacent module parts are bonded, and two bonding surfaces have a non-zero included angle; the bonding surface of at least one module part is provided with a glue applying groove; the glue applying groove is arranged on areas at two sides of the bonding surface. The present application further provides a camera module assembly method based on horizontal active calibration. According to the present application, the flow direction of the glue is guided by the glue applying groove, so that when the module part is transversely arranged, the glue can be easily applied to the bonding surface, and an optical area is prevented from being polluted by the glue.

Description

Camera module and its assembly method

Related applications

This application claims the priority of the Chinese Patent Application No. 202010885199.6 filed on August 28, 2020, entitled "Camera Module and Assembly Method thereof", and the entire contents of the above application are incorporated herein by reference.

technical field

The present invention relates to the field of optical technology, and in particular, the present invention relates to a camera module and an assembling method thereof.

Background technique

In mobile electronic devices such as mobile phones, the vertical telephoto module has a longer focal length, and the height of the module is bound to increase compared with ordinary modules. Due to the size limitation of the mobile phone terminal, the vertical telephoto module can only achieve 2X The equivalent focal length of -3X compared to the main camera. Compared with the traditional vertical camera module (such as the main camera in a common mobile phone multi-camera module), the periscope camera module can provide a high-magnification focal length, so the periscope camera module can achieve long-distance shooting. Specifically, the periscope camera module folds the optical path through a prism (or mirror), so that the optical axis is folded to a direction parallel to the surface of the mobile phone, so that each optical element of the telephoto module can be aligned parallel to The direction of the mobile phone surface is arranged instead of being stacked in the thickness direction of the mobile phone, so the thickness of the mobile phone equipped with the telephoto module can be effectively reduced. At present, the periscope camera module in the mobile phone has been able to achieve an equivalent focal length of 5X and 10X compared to the main camera/wide-angle end. The periscope camera module is the best choice for mobile phone manufacturers to achieve telephoto without increasing the thickness of the mobile phone.

On the other hand, the existing vertical camera module assembly methods include an active calibration-based assembly method and a mechanically fixed assembly method. Among them, active calibration is to arrange a plurality of module components separated from each other along the optical axis in sequence, adjust the gap between each module component according to the measured resolution data of the photosensitive chip, and adjust each module component according to the adjustment result. Glue, and finally get a complete camera module. The mechanical fixation is to directly adjust the bonding surfaces of the various module components separated from each other to be substantially parallel by mechanical means, and then directly bond them. The assembly method based on active calibration can improve the imaging quality of the camera module. For the camera module with many module components and many optical components, the advantage of active calibration will be more obvious.

However, for the existing upright camera modules, the active calibration is often also upright, that is, each module component to be actively calibrated is arranged along the vertical direction. In this case, it is relatively easy to apply the glue because the glue side is facing up. For a periscope camera module, a horizontal structure is often required during assembly, that is, all or most of the module components are arranged in a horizontal direction. At this time, the bonding surface is perpendicular to the horizontal plane, and the glue arranged on the bonding surface tends to flow easily, which brings difficulties to the cloth glue. If the glue spills into the optic zone of the optic, it can also cause smearing problems, resulting in a poor product. Further, active calibration often requires a large gap between the module components, so as to leave a large space for relative position adjustment (ie, adjustment of the gap). In order to glue this large gap, the required amount of glue and glue thickness also need to be increased accordingly. Therefore, assembling the periscope camera module based on the method of active calibration has a higher efficiency than the assembly of the mechanical fixing method. difficulty.

Therefore, there is an urgent need for a solution suitable for active calibration of camera modules arranged in a horizontal structure.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a solution suitable for assembling a camera module arranged in a horizontal structure.

In order to solve the above-mentioned technical problems, the present invention provides a kind of, it comprises:

Compared with the prior art, the present application has at least one of the following technical effects:

1. The application can guide the flow direction of the glue through the glue groove, so that the glue can be conveniently arranged on the bonding surface when the module components are arranged laterally.

2. In the present application, the glue can be arranged through the glue grooves arranged along the two sides of the bonding of the module components, so that when the module components are arranged laterally, the glue can avoid the optical zone, thereby preventing the glue from contaminating the optical zone.

3. In some embodiments of the present application, excess glue can be guided through the glue overflow groove to prevent the glue from overflowing from the outside of the glue cloth groove and cause negative effects (such as contamination of the optical zone).

4. Some embodiments of the present application are particularly suitable for actively calibrating each module component when the module components are arranged laterally, thereby improving the performance of the module after assembly.

5. Some embodiments of the present application are particularly suitable for horizontal assembly of periscope modules.

6. Some embodiments of the present application enable high-yield assembly of periscope modules.

Description of drawings

1 shows a schematic exploded perspective view of a periscope camera module according to an embodiment of the present application;

FIG. 2 shows a schematic diagram of the principle of active calibration during the assembly process of the periscope camera module according to an embodiment of the present application;

FIG. 3a shows a first sub-lens and a second sub-lens in an embodiment of the present application;

Fig. 3b shows a schematic perspective view of the first sub-lens in Fig. 3a at another angle;

Fig. 4 shows the clamping area of the first sub-lens and the second sub-lens in an embodiment of the present application;

FIG. 5 shows a sub-lens clamping device for active calibration according to another embodiment of the present application;

FIG. 6 shows a periscope camera module with a motor assembled based on active calibration in an embodiment of the present application;

7 shows a schematic perspective view of a sub-lens with a motor in an embodiment of the present application;

FIG. 8 shows a schematic front view of the circuit board assembly in an embodiment of the present application after unfolding;

FIG. 9 shows a schematic perspective view of a circuit board assembly in an embodiment of the present application;

Fig. 10 shows a schematic perspective view of a circuit board assembly being clamped by a clamping device in an embodiment of the present application;

FIG. 11 shows a schematic perspective view from another angle when the clamping device clamps the circuit board assembly according to an embodiment of the present application;

Fig. 12 shows the first rigid board provided with the glue overflow groove in an embodiment of the present application;

FIG. 13 shows a schematic perspective view of the circuit board assembly after folding in an embodiment of the present application;

14 shows a perspective exploded view of a periscope camera module in an embodiment of the present application;

Fig. 15 shows a three-dimensional schematic diagram of the periscope camera module shown in Fig. 14 after being assembled;

16 shows a schematic diagram of the assembly of a periscope camera module based on horizontal active calibration with the participation of a module housing;

Fig. 17 shows the three-dimensional schematic diagram of the camera module of Fig. 15 after being cut along the section AA';

Figure 18a shows a schematic longitudinal cross-sectional view of the region near the end face of the second lens barrel and the glue groove in an embodiment of the present application;

Fig. 18b shows a schematic longitudinal cross-sectional view of the region near the end face of the second lens barrel and the glue groove in another embodiment of the present application;

Fig. 18c shows a longitudinal cross-sectional schematic diagram of the region near the end face of the second lens barrel and the glue groove in another embodiment of the present application;

Fig. 18d shows a schematic longitudinal cross-sectional view of the region near the end face of the second lens barrel, the glue distribution groove and the glue overflow groove in one embodiment of the present application.

detailed description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, etc. are only used to distinguish one feature from another feature and do not imply any limitation on the feature. Accordingly, the first body discussed below could also be referred to as a second body without departing from the teachings of the present application.

In the drawings, the thickness, size and shape of objects have been slightly exaggerated for convenience of explanation. The drawings are examples only and are not drawn strictly to scale.

It will also be understood that the terms "comprising", "comprising", "having", "comprising" and/or "comprising" when used in this specification mean the presence of stated features, integers, steps, operations , elements and/or parts, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and/or combinations thereof. Furthermore, when an expression such as "at least one of" appears after a list of listed features, it modifies the entire listed feature and not the individual elements of the list. Further, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application." Also, the term "exemplary" is intended to refer to an example or illustration.

As used herein, the terms "substantially," "approximately," and similar terms are used as terms of approximation, not of degree, and are intended to describe measurements that would be recognized by those of ordinary skill in the art. Inherent bias in a value or calculated value.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted to have meanings consistent with their meanings in the context of the related art, and will not be interpreted in an idealized or overly formal sense unless It is expressly so limited herein.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

FIG. 1 shows a schematic exploded perspective view of a periscope camera module according to an embodiment of the present application. Referring to FIG. 1 , in this embodiment, the periscope camera module includes a prism assembly 100 , a lens assembly 200 , a photosensitive assembly 300 and a bracket 400 . The prism assembly 100 , the lens assembly 200 and the photosensitive assembly 300 may be arranged along a horizontal line, that is, a horizontal structure (or may also be referred to as a horizontal arrangement structure). The bracket 400 may be frame-shaped, which includes a bottom plate 401 and four side walls 402 mounted on the bottom plate 401 . The bracket 400 can be integrally formed, or can be assembled from the bottom plate 401 and the side wall 402 . The prism assembly 100 , the lens assembly 200 and the photosensitive assembly 300 may be installed in the bracket 400 . During assembly, the assembly precision of the prism assembly 100 , the lens assembly 200 and the photosensitive assembly 300 is improved based on the active calibration technology, so as to improve the imaging quality. In this embodiment, the prism assembly 100 may include a reflection prism 101 and an adjustment platform 102 . The target plate can be arranged above the light incident surface of the reflective prism 101, and the reflective prism 101, the lens assembly 200 and the photosensitive assembly 300 are sequentially arranged along a horizontal line. The light emitting surface of the reflective prism 101 faces the light incident surface of the lens assembly 200 , and the light emitting surface of the lens assembly 200 faces the photosensitive surface of the photosensitive assembly 300 . The reflection prism 101 can be supported on the adjustment platform 102 , and the adjustment platform 102 can adjust the inclination of the reflection prism 101 . The lens assembly 200 and the photosensitive assembly 300 can be clamped by clamps, respectively, so as to perform position adjustment in multiple degrees of freedom. After the above-mentioned reflective prism 101 , lens assembly 200 and photosensitive assembly 300 are arranged, an optical imaging system can be formed. Power on the photosensitive assembly 300, output the actual imaging result it received, obtain the resolution of the optical imaging system according to the actual imaging result, and then determine the relative positions of the reflecting prism 101, the lens assembly 200 and the photosensitive assembly 300 in the current state Whether the preset resolution requirement can be met (it should be noted that the resolution requirement can also be replaced with other similar imaging quality indicators). After the active calibration is completed, the reflective prism 101 , the lens assembly 200 and the photosensitive assembly 300 are bonded according to the active calibration result, thereby obtaining the periscope camera module. It should be noted that, since the gap between the reflective prism 101 and the lens assembly 200 and the gap between the lens assembly 200 and the photosensitive assembly 300 are actively calibrated, there may be no difference between the bonding surfaces of the prism assembly 100 and the lens assembly 200. If the included angle is zero, there may also be a non-zero included angle between the bonding surfaces of the lens assembly 200 and the photosensitive assembly 300 . Further, in this embodiment, the gap between the lens assembly 200 and the prism assembly 100 may be referred to as a first adjustment gap, and the gap between the photosensitive assembly and the lens assembly may be referred to as a second adjustment gap. The first adjustment gap and the second adjustment gap may be 30 μm-200 μm. Preferably, the first adjustment gap and the second adjustment gap may be 40-70 μm. Generally speaking, when the adjustment gap is larger, the amount of glue filling is larger, and the thicker the glue, the less conducive to maintaining the bonding strength. In addition, the thicker the glue thickness, it may also cause problems in baking or reliability tests. The problem of performance degradation caused by larger glue thickness.

The periscope camera module turns the light, and the light enters the lens module after passing through the turning of the prism. That is, in the assembled state, the optical axis of the lens is parallel to the target object plane (eg, target plane), so an assembly scheme suitable for the horizontal arrangement of each optical element is required. This is because the target image of the existing periscope module assembly equipment is set on the top of the equipment. No matter the lens is assembled first, or the prism is assembled first and distributed assembly, when the single-component assembly is actively calibrated, it is necessary to The optical elements are arranged laterally (ie horizontally). In addition, the existing periscope camera modules all need brackets to be fixed. The brackets are assembled to the lens, prism and photosensitive chip in the up and down direction, and the prism needs to be assembled to the front of the lens. The prism and the lens or the prism and the bracket are assembled at the same time, which adds multiple processes and slows down the production efficiency. In the above-mentioned embodiment, since the horizontal arrangement is adopted for assembly, the lens, the photosensitive chip and the prism can be assembled in the working state. At this time, the prism, the lens and the photosensitive chip can all be assembled through active calibration. In one embodiment of the present invention, the lens, the photosensitive chip, the prism and the bracket can also be assembled in place at one time in a horizontal arrangement, which is more conducive to improving the production efficiency. In addition, since the horizontal arrangement is closer to the state of the camera module being assembled to the mobile phone than the vertical arrangement, when the periscope camera device in the mobile phone is generally shooting, the direction of gravity on the lens is also perpendicular to the bottom support surface of the camera module (the back of the mobile phone). However, when arranged vertically, the direction of gravity is perpendicular to the lateral support surface of the camera module, which may cause the coil magnet in the motor to be subjected to different gravitational directions and cause the problem of the lens posture. Therefore, the horizontal arrangement can also better reflect the potential of the camera. The actual state of the viewing camera module.

FIG. 2 shows a schematic diagram of the principle of active calibration during the assembly process of the periscope camera module according to an embodiment of the present application. Referring to FIG. 2 , in this embodiment, the lens assembly 200 includes a first sub-lens 201 and a second sub-lens 202 . The gap between the first sub-lens 201 and the second sub-lens 202 can also be glued after being actively calibrated. The photosensitive assembly is not shown in FIG. 2 , but only the target plate 500 and the reflective prism 101 , the first sub-lens 201 and the second sub-lens 202 which are sequentially arranged along the horizontal line are shown. The lens assembly of the periscope camera module is generally composed of at least 3 lenses. In order to improve the equivalent focal length magnification of the periscope camera module relative to the main camera, some designs now often use 5, 8 or even 5 lenses. More lenses are needed to achieve equivalent focal length magnifications of 5X and 10X. With the increase in the number of lenses, it is easy to introduce more assembly errors and superposition in actual manufacturing, resulting in a decrease in the overall yield. In this embodiment, the lens assembly 200 is divided into a first sub-lens 201 and a second sub-lens 202, and the gap between the two is actively calibrated, which can effectively reduce assembly errors, thereby improving high-magnification periscope photography The yield of the module.

Further, FIG. 3a shows a first sub-lens and a second sub-lens in an embodiment of the present application. Referring to FIG. 3 a , in this embodiment, the adhesive surface 203 of the second sub-lens 202 may be provided with a substantially longitudinal glue groove 204 , and the glue groove 204 may be arc-shaped so as to fit the second sub-lens 202 . shape. Specifically, the second sub-lens 202 may include a second lens barrel 205 and a second lens group 206 installed in the second lens barrel 205 . The second lens group 206 may be composed of a plurality of lenses (which may be referred to as second lenses). The cross section of the second lens barrel 205 may be in the shape of a cut circle, that is, a circle in which the top and bottom surfaces are cut flat. This round cut shape is sometimes referred to as a D-cut. Since the cross section of the second lens barrel 205 can be cut into a circle, the top and bottom of the second lens barrel 205 both have a flat surface 205a. When performing active calibration, the flat surfaces 205a on the top and bottom can facilitate clamping by the clamp ( For example, it is clamped by a clamp 205b, see Fig. 2). Further, the top end of the glue distribution groove 204 may be communicated with the top surface of the second lens barrel 205, and the bottom end of the glue distribution groove 204 may have a glue retaining structure for retaining glue. In this embodiment, the glue retaining structure may include the bottom surface of the glue cloth groove 204 . The bottom surface may be horizontal or inwardly inclined. The inward inclination means that the end of the bottom surface of the glue groove close to the first sub-lens is higher than the end away from the first sub-lens (that is, the end of the bottom surface of the glue groove close to the bonding surface is higher than the end away from the first sub-lens. one end of the adhesive side). In the horizontal structure, the bonding surfaces of the first sub-lens 201 and the second sub-lens 202 are both perpendicular to the horizontal plane, so after the glue is applied, the glue may flow downward under the action of gravity. In this embodiment, the glue grooves 204 are arranged longitudinally on both sides of the second lens barrel, which can avoid the optical zone of the second sub-lens and avoid or reduce the risk of glue flowing down to the optical zone of the lens. Since the glue is wet on the surface to which it is attached, that is to say, the adhesion is greater than the cohesive force, the glue will tend to move downward under the action of gravity (with the movement, part of the glue will be left on the surface to which it is attached). On the surface, the other part moves downward under the influence of gravity), under the action of adhesion and viscous force (glue cohesion that hinders the flow of glue, thermal motion force, etc.) Therefore, in this solution, the closer the glue flow trend is to the bottom of the glue tank, the smaller the overall fluidity of the glue, or even no flow. In this way, after the glue is applied in the glue groove, the glue can flow down along the glue groove and leave traces of glue in the glue groove to facilitate bonding.

Further, FIG. 18a shows a schematic longitudinal cross-sectional view of the region near the end face of the second lens barrel and the glue groove in an embodiment of the present application. In this embodiment, the left end surface of the second lens barrel 205 is the bonding surface 203 . The glue groove 204 is opened on the bonding surface 203 . For ease of illustration and understanding, in FIGS. 18 a to 18 d , it is assumed that the outer contour of the cross-section of the second lens barrel is a rectangle, and the glue grooves 204 thereof are linear and arranged vertically. In this embodiment, the top end of the glue distribution groove 204 is connected to the top surface of the second lens barrel 205 . In this embodiment, the bottom surface 204a of the glue-distributing groove 204 is substantially horizontal. The axis of the second lens barrel 205 is also substantially horizontal.

Further, FIG. 18b shows a longitudinal cross-sectional schematic diagram of the region near the end face of the second lens barrel and the glue groove in another embodiment of the present application. In this embodiment, the bottom surface 204a of the glue-distributing groove 204 is inclined inward. That is, the end of the bottom surface 204 a of the glue distribution groove 204 close to the bonding surface 203 is higher than the end far from the bonding surface 203 . In this embodiment, the inwardly inclined bottom surface 204a can form the glue blocking structure. Specifically, a glue accommodating area can be formed at the bottom end of the glue cloth tank, and the inwardly inclined bottom surface 204a can prevent the glue from overflowing to the outside. Here, the outer side refers to the side facing the bonding surface, and the inner side refers to the side away from the bonding surface.

Furthermore, FIG. 18c shows a schematic longitudinal cross-sectional view of the region near the end face of the second lens barrel and the glue groove in another embodiment of the present application. In this embodiment, the glue blocking structure may further include a baffle plate 204 b , and the baffle plate 204 b may be disposed in the outer region of the bottom end of the glue distribution groove 204 . That is, the bottom of the baffle 204b can be connected to the outer area of the bottom surface 204a of the glue dispensing groove 204 , and the top of the baffle 204b is higher than the bottom surface 204a of the glue dispensing groove 204 . In this way, a glue container is formed between the baffle 204b, the bottom surface 204a of the glue groove and the inner side 204c of the glue groove (the outer opening side of the glue groove, the inner side refers to the groove surface on the opposite side of the opening side). The baffle 204b can prevent the glue in the glue accommodating area from overflowing to the outside. In this embodiment, the bottom surface 204a of the glue distribution tank may be horizontal (as shown in FIG. 18c ), or may be inclined.

Further, FIG. 18d shows a schematic longitudinal cross-sectional view of the region near the end face of the second lens barrel, the glue distribution groove, and the glue overflow groove in an embodiment of the present application. Referring to FIG. 18d , in this embodiment, the bottom end of the glue dispensing groove 204 may also communicate with a glue overflow groove 206 located inside the side wall of the second lens barrel 205 . One end of the glue overflow groove 206 can be communicated with the glue cloth groove 204, and the other end of the glue overflow groove 206 can be communicated with the bottom surface (as shown in FIG. 18d ) or the outer surface of the second lens barrel 205 to form a glue overflow port 206a. The position of the glue overflow port 206 a is lower than the bottom surface 204 a of the glue dispensing tank 204 . In this way, when the amount of glue at the bottom end of the glue dispensing groove 204 is too large, the glue can flow obliquely downward along the glue overflow groove to the glue overflow port 206a for discharge. Since the glue overflow port 206a is disposed on the bottom surface or the outer side of the second lens barrel 205 (it should be noted that the outer side here refers to the outer side parallel to the central axis of the second lens barrel 205, not the second lens barrel 205 end face), so it is difficult to contaminate the lens optic zone located in the central area even if there is glue spillage.

Further, the above-mentioned design of the glue distribution groove and the glue overflow groove can be used for any two module components whose bonding surfaces are in a vertical state and need to be actively calibrated. The module component refers to a module component including an optical element, wherein the optical element may be a lens, a prism (or a mirror) or a photosensitive chip. In a periscope camera module, the module component may be a prism component, a lens component, a first sub-lens, a second sub-lens, a photosensitive component, or the like.

Further, in one embodiment, the length of the rubber cloth tank may be 6-8 mm (referring to the length of a single rubber cloth tank). The top of the glue distribution tank may have a chamfer (which may be a rounded chamfer), so that the glue flows into the glue distribution tank from the top surface of the module component.

Further, Fig. 3b shows a schematic perspective view of the first sub-lens in Fig. 3a at another angle. 3a and 3b, it can be seen that, in one embodiment, the adhesive surface of the first sub-lens 201 may also be provided with a glue groove 204 (or a glue groove and a corresponding glue overflow groove). In this way, the two bonding surfaces, ie, the bonding surface of the first sub-lens 201 and the bonding surface of the second sub-lens 202, both have glue grooves 204 (or both have glue grooves and corresponding glue overflow grooves). This design can help to increase the adhesive strength of the first sub-lens 201 and the second sub-lens 202 . Figure 3a and Figure 3b are only illustrative, in fact, in other embodiments of the present application, for any two adjacent module components that need to be bonded, the two bonding surfaces of the two module components The above glue distribution grooves are all provided; or both the above glue distribution grooves and the corresponding glue overflow grooves are provided. Wherein, the module component may be a prism component, a first sub-lens, a second sub-lens or a photosensitive component. Of course, in some cases, a complete lens assembly may be pre-assembled instead of the first sub-lens and the second sub-lens separated from each other. At this time, the module component may be a prism component, a lens component or a photosensitive component.

Further, in a preferred embodiment, the glue used for bonding can be selected according to the following conditions. The viscosity of the glue is (CPS@25°C): 75000-8000, where CPS is the annual unit, and @25°C represents the viscosity at 25°C; the relative density of the glue is (water=1): 1.0500-1.0550g/cm ³ ; The fluidity (rheology) is: 0.9-1.2. The above glue is very suitable to be used in conjunction with the glue trough in the present application, and not only has good bonding firmness, but also can prevent the glue from overflowing from the front of the glue overflow trough, thereby preventing the glue from contaminating the optical zone.

Further, in an embodiment of the present application, a sub-lens clamping device for active calibration is also provided. The sub-lens clamping device may have two clamping jaws, and each clamping jaw has a flat bearing area, the plane bearing against the clamping area that can abut against the surface of the first sub-lens or the second sub-lens, so as to realize Clamping function. FIG. 4 shows the clamping area of the first sub-lens and the second sub-lens in an embodiment of the present application. Referring to FIG. 4 , preferably, the cross-sections of the first sub-lens 201 and the second sub-lens 202 in this embodiment are both D-cut. Specifically, the top and bottom surfaces of the first sub-lens 201 and the second sub-lens 202 are flat surfaces, and the front and rear surfaces thereof are curved surfaces. Clamping areas can be provided on the top and bottom surfaces. In this embodiment, the first sub-lens 201 may be disposed on a side close to the prism assembly, and the second sub-lens 202 may be disposed on a side close to the photosensitive assembly. The first sub-lens 201 may have three lenses, and the second sub-lens 202 may have two lenses. The length of the first sub-lens 201 is longer than that of the second sub-lens 202 , so in a preferred solution, the first clamping area 201a between the bottom and top surfaces of the first sub-lens 201 is preferably larger than the second sub-lens 202 bottom and top. Clamping area 202a. The dimensions of the clamping area can be 200-300 μm long and 150-250 μm wide.

Further, FIG. 5 shows a sub-lens clamping device for active calibration according to another embodiment of the present application. In this embodiment, each clamping jaw 601 of the clamping device 600 has a plane bearing area 601a and a side arc bearing area 601b. The flat bearing area 601a is used for bearing the top surface or bottom surface of the first sub-lens or the second sub-lens, and the side curved bearing area 601b is used for bearing the first sub-lens 201 or the second sub-lens curved sides. In this way, the clamping area between the clamping jaw 601 and the sub-lens is more sufficient, so that the clamping is more stable. When the lens barrel of the sub-lens is injection-molded, the roundness of its outer circumference can be greater than 10μm, and the clamping jaws are generally made by machine tool cutting and polishing. Generally, the roundness of the arc part is within 5μm. The angle δ of the arc portion of the jaw (ie, the arc central angle δ corresponding to the side arc bearing area 601b) is preferably 30°-45°, so that the side arc bearing area 601b of the clamping jaw can be better aligned with the side arc bearing area 601b. The arcuate sides of the sub-lenses bear against each other.

Further, FIG. 6 shows a periscope camera module with a motor assembled based on active calibration according to an embodiment of the present application. The difference between this embodiment and the previous embodiments is that the first sub-lens and the second sub-lens are provided with motors. FIG. 7 shows a schematic perspective view of a sub-lens with a motor in an embodiment of the present application. For convenience of description, the sub-lens with a motor is hereinafter referred to as a motor sub-lens. Referring to FIG. 7 , the motor sub-lens (which may be the first motor sub-lens 211 or the second motor sub-lens 212 , refer to FIG. 6 ) includes a lens barrel 214 , a lens group 215 installed in the lens barrel 214 , and a lens barrel 215 . peripheral motor. The motor may have a motor carrier (not shown in Figures 6 and 7), and the outer side of the lens barrel is mounted on the inner side of the motor carrier, so as to move under the drive of the motor carrier to achieve auto focus, optical zoom, optical One or more of the features such as anti-shake. Generally speaking, the motor has a motor housing 213, and the motor carrier is connected to the motor housing 213 by elastic elements and is suspended inside the motor. The motor also has a drive device, and the drive device may be, for example, an electromagnetic drive device, an SMA drive device (SMA is an abbreviation for Shape Memory Alloy), and the like. Under the action of the driving device, the motor carrier can move relative to the motor housing 213 . In this embodiment, the section of the motor housing (referring to the section perpendicular to its axis) may be substantially rectangular. The two end surfaces of the motor housing 213 can be used as bonding surfaces, that is, the glue groove 204 can be disposed on the end surface 213 a of the motor housing 213 . Since the cross-section of the motor housing 213 is substantially rectangular, in this embodiment, the glue trough 204 may be arranged substantially along the vertical direction. Arrow a in FIG. 6 shows the direction of the glue. Further, the bottom of the glue distribution groove 204 may be connected to a glue overflow groove, and the structure of the glue overflow groove can be referred to the above description, which will not be repeated here.

Further, still referring to FIG. 6 , in an embodiment of the present application, the photosensitive assembly 300 may include a circuit board assembly 301 having a plurality of rigid boards. In the circuit board assembly 301 , the plurality of rigid boards pass through Bendable flexible board connection. FIG. 8 shows a schematic front view of the circuit board assembly in an embodiment of the present application after being unfolded. Referring to FIG. 8 , in this embodiment, the circuit board assembly 301 includes a first hard board 302 , a first soft board 303 , a second hard board 304 , a second soft board 305 , a third hard board 306 , and a third soft board 307 and connector 308. Wherein, the photosensitive chip 310 (referring to FIG. 6 in combination) is installed on the surface (front) of the first hard board 302, and the surface of the first hard board 302 can also be installed with a filter support, and the filter is installed on the filter support . The surface of the first hard board 302 may also have a lens seat, and the lens seat is used for bonding with the second motor sub-lens 212 (referring to FIG. 6 in conjunction). The lens seat may be a molded lens seat, and the molded lens seat may surround the photosensitive chip 310 . The adhesive surface of the lens seat may have the glue cloth groove, and the glue cloth groove may be arranged in two side regions of the lens seat adhesive surface substantially along the vertical direction. In this embodiment, the glue distribution tank may be linear. The bottom of the glue distribution tank can be connected to a glue overflow groove, and the structure of the glue overflow groove can be referred to the above description, which will not be repeated here. FIG. 9 shows a schematic perspective view of a circuit board assembly in an embodiment of the present application. Referring to FIG. 9 , in this embodiment, the backside of the first hard board 302 has a fixing table 302a, and the fixing table 302a is along the optical axis direction (referring to the normal direction of the photosensitive surface) from the backside of the first hard board 302 . formed by extending outward. Further, FIG. 10 shows a schematic perspective view of a circuit board assembly being clamped by a clamping device in an embodiment of the present application. FIG. 11 shows a schematic perspective view from another angle when the clamping device clamps the circuit board assembly according to an embodiment of the present application. Referring to FIGS. 10 and 11 , the top and bottom surfaces of the fixing table 302 a can be used to support the clamping jaws 601 of the clamping device 600 , so that the clamping device 600 can stably and reliably clamp the photosensitive assembly 300 for movement . In this embodiment, the size of the end surface area of the fixing table 302a is preferably 2 mm×2 mm. In this embodiment, the end surface area refers to the projection area of the fixing table on the photosensitive surface of the photosensitive chip. This design can ensure that the force on the four corners of the photosensitive chip (or the force transmitted to the four corners of the photosensitive chip via the fixed table) is uniform, so as to avoid warping or damage of the photosensitive chip.

Further, FIG. 12 shows a first hard board with a glue overflow groove in an embodiment of the present application. Referring to FIG. 12 , in this embodiment, the glue overflow port 206a of the glue overflow tank can be disposed on the back surface of the fixing table 302a, and the fixing table 302a can be molded, for example. One end of the overflow groove is connected to the bottom of the glue groove (the glue groove is located on the two side areas of the mirror base surface, and the mirror base surface is the bonding surface where the photosensitive component and the second motor sub-lens are bonded), and the other end of the glue groove is connected to the bottom of the glue groove. Connect to the glue overflow port 206a on the back. The position of the glue overflow port 206a can be lower than the bottom of the glue cloth groove, so that the excess glue material flows out from the back of the circuit board assembly (referring to the first hard board) along the glue overflow groove, so as to avoid the glue material from contaminating the photosensitive material chips or other optical components.

Further, FIG. 13 shows a schematic perspective view of the circuit board assembly after folding in an embodiment of the present application. Referring to FIG. 13, after the circuit board assembly is folded, the first flexible board 303 is bent so that the second rigid board 304 is folded to the back of the photosensitive chip (ie, folded to the back of the first rigid board 302), and the second flexible board 305 is bent, The connector 308 is made to facilitate plugging or otherwise connecting to the motherboard of an electronic device, such as a cell phone. Bending the third flexible board 307 can bend the third hard board 306 to the side of the lens assembly, and the third hard board 306 can have a contact array 306a (in conjunction with reference to FIG. 8 ) for contact with the contacts on the side of the lens assembly The arrays make contact and make electrical connections. The lens assembly 200 may be a motor lens assembly, so that the third rigid board 306 may be provided with a driving circuit of the motor to supply driving current to the driving element (eg, coil or SMA wire) of the motor.

It should be noted that, in other embodiments of the present application, a pre-assembled motor lens assembly may also be used, that is, the first motor sub-lens and the second motor sub-lens may be replaced by assembled motor lens assemblies. FIG. 14 shows a perspective exploded view of a periscope camera module in an embodiment of the present application. Referring to FIG. 14 , in this embodiment, the periscope camera module includes a prism assembly 100 , a motor lens assembly 220 , a photosensitive assembly 300 , and a module housing 400 . The module housing 400 is roughly in the shape of a rectangular parallelepiped, and the top of the module housing 400 can be opened to facilitate the installation of the prism assembly 100 , the motor lens assembly 220 and the photosensitive assembly 300 . FIG. 15 is a schematic perspective view of the periscope camera module shown in FIG. 14 after being assembled. Further, the periscope camera module may also have a cover body adapted to the module housing 400 . It should be noted that the motor lens assembly 220 in this embodiment can also be replaced by a lens assembly without a motor.

Further, the present application also provides a corresponding periscope camera module assembly method based on horizontal active calibration.

According to an embodiment of the present application, a method for assembling a periscope camera module based on a horizontal active calibration is provided. Referring to FIG. 6 , in this embodiment, the assembled camera module has a motor, and a plurality of module components separated from each other are assembled based on the horizontal active calibration, and then the module housing is installed. Specifically, the assembling method of this embodiment includes the following steps.

Step S10, prepare the prism assembly, the first motor sub-lens, the second motor sub-lens and the photosensitive assembly which are separated from each other. Wherein, the prism assembly and the first motor sub-lens have two bonding surfaces corresponding to each other (that is, the rear end surface of the prism assembly and the front end surface of the first motor sub-lens), and at least one of the two bonding surfaces has cloth glue A groove is arranged longitudinally along the two sides of the bonding surface of the prism assembly or/and the first motor sub-lens. The first motor sub-lens and the second motor sub-lens also have two bonding surfaces corresponding to each other (that is, the rear end surface of the first motor sub-lens and the front end surface of the second motor sub-lens). At least one has a glue groove, and the glue groove is longitudinally arranged along the two side regions of the bonding surface of the first motor sub-lens or/and the second motor sub-lens. The second motor sub-lens and the photosensitive assembly also have two bonding surfaces corresponding to each other (that is, the rear end surface of the second motor sub-lens and the front end surface of the photosensitive assembly), and at least one of the two bonding surfaces has a glue groove , the glue groove is longitudinally arranged along the two sides of the second motor sub-lens or/and the photosensitive assembly (in this embodiment, the lens seat of the photosensitive assembly surrounds its optical zone, so the two sides of the photosensitive assembly can be area on both sides of the front face of the lens mount). In this step, the prism assembly, the first motor sub-lens, the second motor sub-lens and the photosensitive assembly may all be referred to as module components. In this embodiment, the module component includes at least one optical element. The optical element may be a reflective element (eg, a reflective prism), a lens, or a photosensitive chip. The two-sided area refers to the area on the bonding surface on both sides of the optical zone (or optical element) of the module component.

Step S20, pre-positioning a plurality of module components separated from each other, so that the optical system formed by these module components can be imaged. Specifically, the prism assembly, the first motor sub-lens, the second motor sub-lens and the photosensitive assembly are sequentially arranged along a substantially horizontal main optical axis, so that the optical system formed by these module components can be imaged. Additionally, a target is provided on top of the prism assembly to provide a target for active calibration. In this step, the prism assembly can be fixed on a six-axis adjustable platform, the first motor sub-lens and the second motor sub-lens can be respectively clamped by the first clamp and the second clamp to clamp their top and bottom surfaces, and use six A shaft adjustable mechanism drives the movement of the first clamp and the second clamp. The back of the photosensitive assembly may have a fixing table for clamping by the third clamp. The third clamp can also be driven by a six-axis adjustable mechanism. The six-axis adjustable here means that the movement can be performed on the six degrees of freedom of the x, y, and z axes and the rotation around the x, y, and z axes. In this embodiment, the vertical direction is the z-axis, the horizontal direction parallel to the main optical axis is the y-axis, and the horizontal direction perpendicular to the main optical axis is the x-axis.

In step S30, active calibration is performed on the plurality of module components separated from each other, so that the imaging quality of the output image of the photosensitive component reaches a preset standard. Here, the imaging quality can be characterized by resolution (such as MTF value or SFR value), or it can be characterized by a weighted comprehensive index including resolution. The active calibration can be performed on the above-mentioned six degrees of freedom of movement, or can be performed on some of the preset six degrees of freedom of movement.

Step S40, after the active calibration is completed, according to the result of the active calibration, each module component is bonded with glue, so that the relative position of each module component is maintained at the relative position determined by the active calibration. It should be noted that in this embodiment, since the relative position of each module component is actually determined according to the individualized active calibration results, and each optical element of each module component has a certain manufacturing tolerance, each The assembly process of optical components of each module component will also introduce a certain assembly tolerance. Therefore, in the active calibration stage, the bonding surfaces of adjacent module components are often adjusted to a non-parallel state (that is, the two have a non-zero value). angle) to compensate for the various tolerances mentioned above. Further, in this step, the glue may be arranged from top to bottom along the glue cloth groove. In one example, glue can be poured from the top surface of the module components, and the glue flows along the glue groove under the action of gravity until the entire glue groove is covered. The glue can be cured by irradiating UV light to hold adjacent module parts together.

In the above embodiment, in the step S40, the glue may be arranged before the active calibration step (ie, step S30) is performed, or the glue may be arranged after the active calibration step (ie, step S30) is completed. Wherein, for the case of arranging the glue later, in one example, step S30 may be performed first, and then part of the module components are removed to arrange the glue, and then the removed module components are restored to the position determined by the active calibration , and finally the glue is cured to complete the bond. In another example, step S30 may be performed first, and then the positions of each module component are kept unchanged, and glue is poured directly from the top surface of the module component, and the glue flows along the cloth glue tank under the action of gravity until the entire area is covered. Cloth the glue tank, and finally cure the glue to complete the bonding.

Further, the present application also provides a modified embodiment based on the embodiment shown in FIG. 6 . In this embodiment, in the step S10, the first motor sub-lens 211 and the second motor sub-lens 212 may be combined into a complete motor lens assembly 220 (refer to FIG. 15 ). In subsequent steps, the motor lens assembly 220 participates in active calibration as a single module component. The motor lens assembly may include a motor and a lens barrel mounted within the motor carrier and at least one lens mounted within the lens barrel.

Further, the present application also provides another modified embodiment based on the embodiment shown in FIG. 6 . In this embodiment, the first motor sub-lens 211 and the second motor sub-lens 212 may be replaced by the first sub-lens and the second sub-lens without a motor. When the outer contours of the end faces of the lens barrels of the first sub-lens and the second sub-lens are circular, the adhesive cloth grooves may be arranged along the circular contours on both sides of the bonding surface, that is, the adhesive cloth The slot may be arcuate.

Further, the present application also provides another modified embodiment based on the embodiment shown in FIG. 6 . In this embodiment, the first motor sub-lens 211 and the second motor sub-lens 212 may be replaced by lens assemblies without motors. In subsequent steps, the lens assembly can participate in active calibration as a single modular component. The lens assembly may include a lens barrel and at least one lens mounted within the lens barrel.

Further, according to another embodiment of the present application, a method for assembling a periscope camera module based on a horizontal active calibration and involving a module housing is also provided. FIG. 16 shows a schematic diagram of the assembly of the periscope camera module based on the horizontal active calibration with the participation of the module housing. 16, the assembly method includes the following steps.

In step S100, the prism assembly 100, the lens assembly 200 and the photosensitive assembly 300, which are separated from each other, and the module casing 400 having a substantially rectangular parallelepiped shape are prepared, and the top of the module casing 400 is open. The prism assembly 100 and the lens assembly 200 have two bonding surfaces corresponding to each other (that is, the rear end surface of the prism assembly and the front end surface of the lens assembly. The end face of the image side, the meanings of front and rear in the subsequent description are analogous, and will not be repeated), at least one of the two bonding surfaces has a glue groove, and the glue groove is along the prism assembly 100 or/and the lens. The two side regions of the bonding surface of the assembly 200 are arranged longitudinally. The lens assembly 200 and the photosensitive assembly 300 also have two bonding surfaces corresponding to each other (that is, the rear end surface of the lens assembly and the front end surface of the photosensitive assembly), and at least one of the two bonding surfaces has a cloth glue groove, and the cloth The glue grooves are longitudinally arranged along the two sides of the lens assembly or/and the photosensitive assembly (in this embodiment, the lens holder of the photosensitive assembly surrounds its optical area, so the two sides of the photosensitive assembly 300 can be the front face of the lens holder. area on both sides). In this step, the prism assembly 100 , the lens assembly 200 and the photosensitive assembly 300 may all be referred to as module components. In this embodiment, the module component includes at least one optical element. The optical element may be a reflective element (eg, a reflective prism), a lens, or a photosensitive chip. The two-sided area refers to the area on the bonding surface on both sides of the optical zone (or optical element) of the module component.

In step S200, a plurality of module components separated from each other are placed in the module housing 400, and these module components are pre-positioned, so that the optical system formed by these module components can be imaged. Specifically, the prism assembly 100 , the lens assembly 200 and the photosensitive assembly 300 are placed in the module housing 400 , and the prism assembly 100 , the lens assembly 200 and the photosensitive assembly 300 are sequentially arranged along a substantially horizontal main optical axis Arranged so that the optical system formed by these module components can be imaged. Additionally, a target is provided on top of the prism assembly to provide a target for active calibration. In this step, the boss on the top of the prism assembly can be clamped by a first clamp (not shown in the figure) (the boss can be located on the injection molded part of the prism assembly, that is, the prism assembly can have a prism support, the prism The boss can be formed on the top of the support to facilitate clamping). The photosensitive assembly 300 . The first clamp, the first suction nozzle and the second suction nozzle can all be driven by a six-axis adjustable mechanism. The six-axis adjustable here means that the movement can be performed on the six degrees of freedom of the x, y, and z axes and the rotation around the x, y, and z axes. In this embodiment, the vertical direction is the z-axis, the horizontal direction parallel to the main optical axis is the y-axis, and the horizontal direction perpendicular to the main optical axis is the x-axis.

In step S300, active calibration is performed on a plurality of module components separated from each other, so that the imaging quality of the output image of the photosensitive component reaches a preset standard. Here, the imaging quality can be characterized by resolution (such as MTF value or SFR value), or it can be characterized by a weighted comprehensive index including resolution. The active calibration can be performed on the above-mentioned six degrees of freedom of movement, or can be performed on some of the preset six degrees of freedom of movement.

Step S400, after the active calibration is completed, according to the result of the active calibration, each module component is bonded to the module housing 400 with the first glue to complete the pre-fixation, and then from the top to each glue groove (each glue) The grooves are located between two adjacent module components) into the second glue, and the second glue flows along the cloth glue groove under the action of gravity until the entire cloth glue groove is covered. After the second glue is cured, the bonding of each module component is completed, so that the relative position of each module component is maintained at the relative position determined by the active calibration. In this embodiment, since pre-fixation can be performed by the first glue between the module housing 400 and each module component, when the second glue is arranged, the first clamp, the first suction nozzle 600a and the second suction The intake devices such as the mouth 600b can be released and withdrawn. In this way, the movement of the glue dispensing device for arranging the second glue and the glue dispensing can be facilitated. At the same time, since the positions of each module component have been pre-fixed, the risk of the second glue entering the optical zone can be further reduced, thereby improving product yield.

Further, in one embodiment, in the step S100, the top of the inner side surface of the module housing 400 may have a step for accommodating the first glue. FIG. 17 is a schematic perspective view of the camera module of FIG. 15 cut along the section AA'. Referring to FIG. 17 , the step 401 may be located at the top of the side wall of the module housing 400 . Further, in the step S200 and the step S300, there is an adjustment gap 404 between the inner side surface 402 of the module housing 400 and the outer side surface 403 of each module component (the adjustment gap 404 may be 0.050mm-0.150mm). ) to reserve space for active calibration. In step S400, the first glue 701 is arranged at the step 401 at the top of the inner side of the module housing 400, and the step can be arranged along a direction parallel to the y-axis. It should be noted that the size of the adjustment gap here does not include the width of the step, that is, the adjustment gap refers to the inner side of the step-free part of the module housing (ie, the middle and lower sections of the inner side of the module housing) Clearance with the outer side of each module part.

The concept of the present application is not only applicable to the assembly of periscope camera modules, but also to the assembly of other types of camera modules based on horizontal active calibration.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of its equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims (20)

1. A camera module is characterized in that it includes a plurality of module components, the module components include at least one optical element, and the optical element is a reflective element, a lens or a photosensitive chip; the plurality of module components are along the Arranged in sequence in the horizontal direction, any two adjacent said module components are bonded and the two bonding surfaces have an included angle that is not zero;

   Wherein, the adhesive surface of at least one of the module components is provided with an adhesive cloth groove, and the adhesive cloth groove is arranged along the two sides of the adhesive surface.
2. The camera module according to claim 1, wherein the top end of the glue distribution groove is connected to the top surface of the module component.
3. The camera module according to claim 1, wherein the bottom end of the glue cloth groove has a glue blocking structure, and the glue blocking structure comprises a bottom surface of the glue cloth groove, and the bottom surface is horizontal or inclined inward. .
4. The camera module according to claim 3, wherein the rubber blocking structure further comprises a baffle, the bottom surface of the baffle is connected to the outer area of the bottom surface of the rubber cloth groove, and the blocking The top surface of the board is higher than the bottom surface of the glue trough.
5. The camera module according to claim 4, wherein the bottom surface is horizontal or inclined inward. The bonding surface also has a glue overflow groove that communicates with the bottom end of the glue cloth groove; wherein, one end of the glue overflow groove is communicated with the glue cloth groove, and the other end is communicated with the module part. A glue overflow opening is formed on the bottom surface, the outer surface or the back surface, and the position of the glue overflow opening is lower than the bottom surface of the glue cloth groove.
6. The camera module according to claim 1, wherein the viscosity of the glue arranged in the glue cloth tank is: 75000-8000CPS at 25°C; the relative density is: 1.0500-1.0550g/cm ³ ; the fluidity is As: 0.9-1.2.
7. The camera module according to claim 1, wherein the camera module is a periscope camera module.
8. The camera module according to claim 7, wherein the module component is a prism component, a lens component or a photosensitive component.
9. The camera module according to claim 7, wherein the module component is a prism component, a first sub-lens, a second sub-lens or a photosensitive component.
10. The camera module according to claim 8, wherein the cross-section of the lens assembly is circular or circular, and at least one end face of the lens assembly is a bonding surface and has the glue groove, The rubber cloth groove is arc-shaped.
11. The camera module according to claim 9, wherein the cross section of the first sub-lens is a circle or a cut circle, and at least one end surface of the first sub-lens is a bonding surface and has the Glue groove, the glue groove is arc-shaped; the cross section of the second sub-lens is circular or circular, and at least one end face of the second sub-lens is a bonding surface and has the cloth glue The glue groove is arc-shaped; the first sub-lens and the second sub-lens are bonded by the glue arranged in the glue groove, and the first sub-lens and the second sub-lens are bonded The relative positions of the sub-lenses are determined by active calibration; wherein the active calibration is a process of adjusting the gaps between the module components according to the measured resolution data of the photosensitive components.
12. The camera module according to claim 8 or 9, wherein the photosensitive component comprises a photosensitive chip and a lens seat surrounding the photosensitive chip, the surface of the lens seat is a bonding surface and has the The rubber cloth groove is linear.
13. The camera module according to claim 7, wherein the lens assembly is a motor lens assembly with a motor, the motor has a motor housing, and at least one end surface of the motor housing is a bonding surface and has the The rubber cloth groove is linear.
14. The camera module according to claim 8, wherein the first sub-lens is a first motor sub-lens with a motor, the second sub-lens is a second motor sub-lens with a motor, and the motor It has a motor casing, at least one end surface of the motor casing is a bonding surface and has the glue cloth groove, and the glue cloth groove is linear.
15. The camera module according to claim 1, wherein the relative position of each of the module components is determined by active calibration, wherein the active calibration is based on the measured resolution data of the photosensitive component to each of the module components. The process of adjusting the gap between.
16. The camera module according to claim 8 or 9, wherein the photosensitive assembly includes a circuit board assembly, a photosensitive chip, a mirror holder, a filter holder and a filter; wherein the circuit board assembly includes a first Hard board; the photosensitive chip is installed on the front of the first hard board, and the filter support is also installed on the front of the first hard board, and the filter is installed on the filter support, so The front surface of the first hard board is also installed with the mirror seat, the mirror seat is surrounded by the photosensitive chip, and the mirror seat is used for bonding with other said module components.
17. The camera module according to claim 16, wherein the circuit board assembly further comprises a first flexible board, a second rigid board, a second flexible board, a third rigid board, a third flexible board and a connector; Wherein, after the circuit board assembly is folded, the first flexible board is bent so that the second rigid board is folded to the back of the first rigid board, and the second flexible board is bent to make the connection The device is convenient to connect to the main board of the electronic equipment carrying the camera module, the third flexible board is bent, and the third rigid board is bent to the side of the lens assembly or the motor lens assembly, the third rigid board is bent. The board has an array of contacts for contacting and making electrical connections with the array of contacts on the sides of the lens assembly or the motor lens assembly.
18. A method for assembling a camera module, comprising:

    Step 1) Prepare a plurality of module components and module housings that are separated from each other, the module components include at least one optical element, and the optical element is a reflective element, a lens or a photosensitive chip; Arranged in sequence in the horizontal direction, any two adjacent module components are bonded and the two bonding surfaces have an included angle that is not zero; wherein, at least one of the module components has cloth glue on the bonding surface groove, the glue cloth groove is arranged along the two sides of the bonding surface;

    Step 2) arranging the plurality of module components in sequence along the horizontal direction to form an imageable optical system;

    Step 3) performing active calibration on each of the module components, and the active calibration is a process of adjusting the relative position of each of the module components according to the actual imaging result of the optical system;

    Step 4) arranging glue in the glue trough, bonding each of the module components, and keeping the relative position of each of the module components at the relative position determined by active calibration; and

    Step 5) Install each of the bonded module components in the module housing.
19. The method of assembling a camera module according to claim 18, wherein the camera module is a periscope camera module, and the module components include a prism component, a lens component or a photosensitive component; or the module The components include a prism assembly, a first sub-lens, a second sub-lens or a photosensitive assembly.
20. A camera module assembly method, wherein the camera module is a periscope camera module, wherein the camera module assembly method comprises:

    Step 1) Prepare a plurality of module components and module housings that are separated from each other, the module components include at least one optical element, and the optical element is a reflective element, a lens or a photosensitive chip; Arranged in sequence in the horizontal direction, any two adjacent module components are bonded and the two bonding surfaces have an included angle that is not zero; wherein, at least one of the module components has cloth glue on the bonding surface groove, the glue cloth groove is arranged along the two sides of the bonding surface;

    Step 2) Arrange the plurality of module components in sequence along the horizontal direction to form an imageable optical system; and place the plurality of module components in the module housing, and the plurality of modules There is an adjustment gap between the component and the module housing;

    Step 3) performing active calibration on each of the module components, and the active calibration is a process of adjusting the relative positions of each of the module components according to the actual imaging result of the optical system; and

    Step 4) Arrange a first glue in the adjustment gap between the plurality of module components and the module housing for pre-fixing; The components are bonded and maintain the relative position of each of the module components at the relative positions determined by the active calibration.

Images