CN107783245B

CN107783245B - Double-camera zooming module

Info

Publication number: CN107783245B
Application number: CN201610726104.XA
Authority: CN
Inventors: 刘春梅; 姚立锋; 方银丽
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2023-12-22
Anticipated expiration: 2036-08-24
Also published as: CN107783245A

Abstract

The invention discloses a double-camera zooming module, which comprises a first camera module (1), a light steering mechanism (2) and a second camera module (3), wherein the first camera module (1) is a wide-angle camera module, the second camera module (3) is a zooming camera module, the second camera module (3) and the light steering mechanism (2) form a periscope type camera module, and light reflected by the light steering mechanism (2) is incident to a lens of the second camera module (3), and the double-camera zooming module is characterized in that the first camera module (1) and the light steering mechanism (2) are arranged in a coplanar mode, and the distance between an incident optical axis of the first camera module (1) and an incident optical axis of the light steering mechanism (2) is 5mm to 15mm. The invention designs the optical axis distance between the two camera modules to be a reasonable distance, thereby realizing zoom operation of the double camera modules and effectively improving the resolution of imaging.

Description

Double-camera zooming module

Technical Field

The invention relates to a double-camera zooming module, in particular to a double-camera zooming module for a mobile terminal.

Background

Chinese patent CN201480051999.0 discloses mirror tilt actuation in which a mirror and a base supporting the mirror are provided. According to this patent, the mirror is supported by different pivots and controlled by means of magnets, FP coils, hall sensors, springs, etc., avoiding the jitter that occurs during use.

The mirror tilt actuation results are complex, the number of parts is numerous, and the manufacturing and maintenance are complex.

Disclosure of Invention

The invention aims to provide a double-camera zooming module, which ensures that the light parallelism of one camera module and a prism entering the double-camera module is high, the imaging quality is high, the overall strength is high, and meanwhile, mass production is easy to realize.

In order to achieve the above object, according to the present invention, there is provided a dual-camera zoom module, including a first camera module, a light steering mechanism, and a second camera module, wherein the first camera module is a wide-angle camera module, the second camera module is a zoom camera module, the second camera module and the light steering mechanism form a periscope camera module, light reflected by the light steering mechanism is incident on a lens of the second camera module, the first camera module and the light steering mechanism are arranged in a coplanar manner, and a distance between an incident optical axis of the first camera module and an incident optical axis of the light steering mechanism is 5mm to 15mm.

The angle of view of the first camera module is 65-130 degrees, and the angle of view of the second camera module is 20-55 degrees.

In addition, the effective focal length of the first camera module is 2.5mm to 5.5mm, and the effective focal length of the second camera module is 3.5mm to 19.0mm.

In addition, a dual camera zoom module may be used to achieve 1.5 to 3.5 times optical zoom.

According to one aspect of the present invention, the light turning mechanism includes a prism unit and a prism base;

the prism unit is rotatably supported in the prism base.

According to an aspect of the present invention, the prism unit includes a prism housing, a prism seat, a support sleeve, and a support shaft;

the prism shell is a rectangular frame and is provided with a bottom frame and two side frames, one end of each side frame is fixedly connected with the bottom frame, the other end of each side frame is an outwards extending free end, and a connecting cross beam is arranged between the two free ends.

According to one aspect of the invention, the prism base comprises a first camera module accommodating cavity, a prism accommodating cavity, a connecting wall, an intermediate reinforcing plate and a bottom plate;

at least one positioning protrusion is arranged on one surface of the connecting wall.

According to one aspect of the present invention, the second camera module includes a camera housing, a motor module, an anti-shake unit, and a support case;

the camera shooting shell, the motor module, the anti-shake unit and the supporting shell are coaxially arranged.

According to one aspect of the present invention, the camera housing includes a housing portion, an optical axis opening, a positioning hole, a front panel, and a connecting portion;

the connecting parts are positioned at the end parts of the adjacent sides of the hollow rectangular columnar shell parts and the front panel, and at least two connecting parts are oppositely arranged.

According to one aspect of the invention, the positioning protrusion is located in the positioning hole, and the free end and the connecting portion are mutually matched and fixedly connected.

According to one aspect of the invention, the housing part is a hollow rectangular column, the front panel is fixedly connected with one end of the hollow rectangular column-shaped housing part, the optical axis opening is arranged in the center of the front panel, and the positioning hole is arranged on the front panel.

According to the double-camera zooming module, the optical axes of the two camera modules are spaced by a reasonable distance, so that the double-camera module can realize zooming operation, and the resolution of imaging is effectively improved.

The invention designs the view field angle and the focal length of the double-camera module within a reasonable range, and can further improve the zooming and imaging effects.

The dual-camera zoom module according to the present invention fixes the first camera module and the prism unit on the prism base, thereby ensuring that both are on a common plane. The light rays entering the first camera module and the light rays entering the prism are parallel to each other, so that imaging quality is guaranteed.

According to the invention, the middle reinforcing plate is arranged on the prism base to reinforce the prism base, so that the integral rigidity of the prism base is improved, and the first camera module and the prism unit are positioned on a plane with higher rigidity, which further ensures that the relative position relationship between the first camera module and the prism is stable, and ensures that incoming rays are parallel; meanwhile, the strength of the prism base is higher, and the prism base is not easy to damage.

According to the double-camera zooming module, the positioning protrusion is arranged on the prism base, and the positioning hole is arranged on the second camera shooting module, so that the positioning protrusion and the positioning hole are matched with each other, the correct position relation during assembly is ensured, and the imaging quality is improved.

The double-camera zooming module adopts a split structure, different components are divided into different units, and then the units are assembled into a whole. This design results in a dual-camera zoom module according to the present invention in which the different components can be replaced individually. For example, if the first camera module is damaged or the prism unit is damaged, the replacement can be performed alone without affecting the second camera module at a later stage. The split structure provides the possibility and flexibility of replacing parts individually, which is of great benefit for saving manufacturing costs, labor costs, maintenance costs during use, etc.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of an imaging overlay area of a dual-camera zoom module according to the present invention;

FIG. 2 is a perspective view of the dual-camera zoom module of the present invention;

FIG. 3 is an exploded view of a dual-camera zoom module according to the present invention;

FIG. 4 is an exploded view of a prism unit of the present invention;

FIG. 5 is a perspective view of a prism base of the present invention;

FIG. 6 is a schematic view of the assembly of the prism unit of the present invention to a prism base;

FIG. 7 is an exploded view of a second camera module according to the present invention;

fig. 8 is a schematic view illustrating a state in which the light steering mechanism and the second camera module are connected to each other.

Detailed Description

The description of this illustrative embodiment should be taken in conjunction with the accompanying drawings, which are a part of the complete specification. In the drawings, the shape or thickness of the embodiments may be enlarged and indicated simply or conveniently. Furthermore, portions of the structures in the drawings will be described in terms of separate descriptions, and it should be noted that elements not shown or described in the drawings are in a form known to those of ordinary skill in the art.

The present invention will be described in detail below with reference to the drawings and the specific embodiments, which are not described in detail herein, but the embodiments of the present invention are not limited to the following embodiments.

Fig. 1 is a schematic view of an imaging overlap region of a dual-camera zoom module according to the present invention. Fig. 2 schematically illustrates, in perspective view, a dual-camera zoom module according to an embodiment of the present invention, which is mainly used for a mobile terminal having a periscope-type camera module, such as a mobile phone. As shown in fig. 2, such a dual-camera zoom module includes a first camera module 1, a light steering mechanism 2, and a second camera module 3.

The first camera module 1 is a wide-angle camera module, the second camera module 3 is a zoom camera module, the second camera module 3 and the light steering mechanism 2 form a periscope camera module, and light reflected by the light steering mechanism 2 is incident to a lens of the second camera module 3. The first camera module 1 and the light steering mechanism 2 are arranged in a coplanar mode, and the distance between the incident optical axis of the first camera module 1 and the incident optical axis of the light steering mechanism 2 is 5mm to 15mm.

Referring to fig. 1, the first camera module 1 has a field angle α and a focal length h; the angle of view of the light redirecting mechanism 2 is beta. The half field of view region OH of the first camera module 1 shown in fig. 1 has a size equal to h×tan (α/2). In fig. 1, L is the length of the overlapping field of view region, d is the distance between the incident optical axis of the first image capturing module 1 and the incident optical axis of the light steering mechanism 2, and h is the object distance. Wherein x1=d-h tan (β/2), x2=d+h tan (β/2), and |x1|+x2=l. x1 is the area starting position of the overlapped field of view (the left boundary of the overlapped field of view is located at the left side of the optical axis of the first camera module 1 when the optical zoom is in the far focus, and x1 represents the horizontal position where the left boundary of the overlapped field of view is located if the horizontal position coordinate of the optical axis is 0), and x2 is the end position of the overlapped field of view (the right boundary of the overlapped field of view is located at the right side of the optical axis of the first camera module 1 when the optical zoom is in the far focus, and x2 represents the horizontal position where the right boundary of the overlapped field of view is located if the horizontal position coordinate of the optical axis of the first camera module 1 is 0), at this time, if the zooming is to be completed, the overlapping area of the light steering mechanism 2 of the second camera module 3 and the field of view of the first camera module 1 is within a certain view field area of the first camera module 1.

Assuming that L is the length of the combined field of view region, ω is the length ratio of the length L of the combined field of view region to the maximum field of view range (oh×2) of the first camera module 1, in order to achieve the focusing operation, the following requirements need to be satisfied:

x2＝d+h*tan(β/2)<h*tan(α/2)*ω；

that is, d < h tan (α/2) ×ω -h tan (β/2).

That is, in the case where α, β, and h are known, the distance d between the incident optical axis of the first image pickup module 1 and the incident optical axis of the light turning mechanism 2 should satisfy the above condition.

In order to enable the dual-camera zooming module to realize 1.5 times to 3.5 times of optical zooming, a camera shooting module meeting the following parameter requirements can be adopted:

the angle of view alpha of the first camera module 1 is 65 DEG to 130 DEG, and the angle of view beta of the light steering mechanism 2 is 20 DEG to 55 DEG; the effective focal length of the first camera module 1 is 2.5mm to 5.5mm, and the effective focal length of the second camera module 3 is 3.5mm to 19.0mm.

Example 1:realizing 2.5 times optical zoom

In this example, the angle of view α of the first camera module 1 is 74 °, the angle of view β of the light steering mechanism 2 is 30 °, the object distance is 5000mm, when the incident optical axis distance d of the first camera module 1 and the light steering mechanism 2 is equal to 8.5mm, OH is equal to 3768, x1 is-1331, x2 is 1348, the ratio (x 1/OH) of x1 to the length OH of the half field area is-0.35, and the ratio (x 2/OH) of x2 to the length OH of the half field area is 0.36.

Example 2:realizing 1.5 times optical zoom

In this example, the angle of view α of the first camera module 1 is 74 °, the angle of view β of the light steering mechanism 2 is 49 °, the object distance is 5000mm, when the incident optical axis distance d of the first camera module 1 and the light steering mechanism 2 is equal to 10mm, OH is equal to 3768, x1 is-2269, x2 is 2289, the ratio of x1 to the length OH of the half field of view region (x 1/OH) is-0.60, and the ratio of x2 to the length OH of the half field of view region (x 2/OH) is 0.61.

Example 3:realizing 3.5 times optical zoom

In this example, the angle of view α of the first camera module 1 is 78 °, the angle of view β of the light steering mechanism 2 is 23 °, the object distance is 5000mm, when the incident optical axis distance d of the first camera module 1 and the light steering mechanism 2 is equal to 10mm, OH is 4049, x1 is-1007, x2 is 1027, the ratio (x 1/OH) of x1 to the length OH of the half field of view region is-0.25, and the ratio (x 2/OH) of x2 to the length OH of the half field of view region is 0.25.

Fig. 3 is an exploded schematic view of the dual-camera zoom module shown in fig. 2, in which a positional relationship between respective constituent parts of the dual-camera zoom module according to the present invention is schematically shown.

As can be seen from fig. 2 and 3, the dual-camera zoom module according to the present invention adopts a split type structural design. In one embodiment according to the present invention, the first image capturing module 1 and the prism unit 201 are coplanar in design such that they are combined as one unit. The second camera module 3 and the circuit board 4 are two other independent components or assembly units. This split construction allows for the detection of the various components prior to assembly, and once an unacceptable component or unit is found, it can be simply replaced without any impact on the other components. Of course, once assembled and formed, after a period of use, some part or unit is found to be damaged, and the damaged part can be simply replaced without affecting the continued use of other parts. This will reduce the manufacturing costs as well as the costs of maintenance.

In one embodiment according to the invention, glue is applied to the connection surface of the light redirecting means 2 opposite the rear second camera module 3, and the connection of the two housings is fixed to one another by laser welding. Glue is coated on the connecting surfaces, so that gaps between the two connecting surfaces are blocked, and unnecessary light is prevented from entering the double-camera zooming module.

As shown in fig. 2 and 3, such a dual-camera zoom module includes a first camera module 1, a light steering mechanism 2, a second camera module 3, and a circuit board 4. As shown, the first camera module 1 is disposed on the leftmost side of the entire dual-camera zoom module, followed by the light steering mechanism 2. The light redirecting mechanism 2 comprises a rectangular prism base 202. The prism base 202 is provided with two positions, one for accommodating the prism unit 201 and the other for accommodating the first camera module 1. The arrangement is such that the first camera module 1 and the prism unit 201 are mounted to each other on a base plate or plane, or the first camera module 1 and the prism unit 201 are arranged coplanar. This eliminates a mutual positional error generated by disposing the first image pickup module 1 and the prism unit 201 on different bases. This arrangement ensures the parallelism of light rays entering the first camera module 1 and the prism unit 201, that is, the imaging quality, with a simple structure.

As shown in fig. 2 and 3, according to an embodiment of the present invention, the first camera module 1 and the light steering mechanism 2 are assembled with each other and then fixedly connected with the second camera module 3. In achieving such a connection, it is required that the two are rigidly positioned and aligned with each other. This ensures that the light rays refracted out of the prism unit 201 are concentric or coaxial with the optical axis of the imaging lens in the second imaging module 3. The structure of this positioning will be described in further detail below in connection with the associated drawings. In the present embodiment, the light steering mechanism 2 to which the first imaging module 1 is fixed and the second imaging module 3 are positioned with each other, and then the two are fixedly connected to each other by laser welding or bonding. The circuit board 4 may be pre-assembled on the second camera module 3, and then the light steering mechanism 2 of the first camera module 1 and the second camera module 3 are fixedly connected with each other. The light steering mechanism 2 of the first camera module 1 and the second camera module 3 may be fixedly connected, and then the circuit board 4 may be fixedly connected to the second camera module 3. Thus, the double-camera zoom module according to the invention is assembled to form a complete double-camera zoom module as shown in fig. 2.

Fig. 4 shows in an exploded schematic view a prism unit 201 in a light steering mechanism 2 in a dual camera zoom module according to the present invention.

As shown in fig. 4, the prism unit 201 mainly includes a prism housing 2011, a prism 2012, a prism seat 2013, a support boss 2014, a support shaft 2015, and a support clip seat 2016. The prism housing 2011 is a rectangular frame surrounded by three side walls or frames, which are a bottom frame 2011a and two side frames 2011b. The two side frames 2011b have the same structure and shape and are arranged opposite to each other. A bottom frame 2011a is provided at one end of the two side frames 2011b. Thereby forming an approximately U-shaped frame. This frame is a rectangular frame that is open on one side or open. The two side frames 2011b are respectively and fixedly connected with the bottom frame 2011a at one end, and the other end is a free end 2011c extending outwards. In the present embodiment, the two free ends 2011c are used to connect with the second camera module 3 disposed sequentially behind. A connecting beam 2011d is also provided between the two free ends 2011c. The connecting beam 2011d is used for fixing the distance between the two free ends 2011c on one hand, so that the connecting beam can be connected with the second rear camera module 3 more accurately after being positioned; on the other hand, the connecting beam 2011d also serves to block light that may leak into the space between the prism 2012 and the second camera module 3 at the connecting slit. This is advantageous for improving imaging quality. The connecting beam 2011d improves the overall rigidity of the prism housing 2011 and effectively prevents unwanted light from entering the dual-camera zoom module according to the present invention.

As shown in fig. 4, such a prism unit 201 further includes a prism 2012, a prism seat 2013, a support boss 2014, and a support shaft 2015. The prism 2012 is fixedly disposed in the prism holder 2013, and it can be clearly seen from the drawing that an upper surface of the prism 2012 protrudes from the prism holder 2013 in an assembled state. The support boss 2014 is fixedly installed at a lower portion of the prism sheet 2013, i.e., the other side of the prism sheet 2013 opposite to the position where the prism 2012 is installed. A support shaft 2015 is rotatably mounted in the support sleeve 2014.

As shown in fig. 4, prism 2012 is shown in a transverse position with a cross-section of prism 2012 being substantially right triangle. As shown in the figure, the plane of one right-angle side of the right triangle is upward. Thus, the plane of the hypotenuse of the right triangle on prism 2012 faces and is supported by prism mount 2013.

As shown in fig. 4, in one embodiment according to the present invention, a support boss 2014 is used to support the entire prism mount 2013 and prism 2012 so as to be rotatable about the support shaft 2015 in cooperation with the support shaft 2015.

In one embodiment according to the present invention as shown in fig. 4, glue for bonding is first applied in the prism sheet 2013, and then the prism 2012 is put into the prism sheet 2013 and the glue is cured, thereby bonding the prism 2012 and the prism sheet 2013 to each other firmly. The support boss 2014 is placed in the through hole 2013a of the prism seat 2013 and fixed. The prism base 2013 to which the prism 2012 has been assembled is rotatably supported on the prism base 202 by a support shaft 2015, and the prism housing 2011 is mounted on the prism base 2013.

In the embodiment according to the present invention, a magnet for driving the prism holder 2013 to move is further provided on the prism holder 2013, and a coil and a circuit for cooperating with the magnet for driving the prism holder 2013 to move are provided on the prism base 202. Thereby forming a driving means for driving the movement of prism 2012. Driven by the drive device, prism 2012 rotates or moves relative to support shaft 2015, thereby effecting an adjustment movement of prism 2012 in different degrees of freedom.

Fig. 5 shows a specific shape and structure of the prism base 202 in a perspective view. As shown, the prism base 202 is rectangular and the base plate 2025 is a rectangular flat plate. On one surface of the bottom plate 2025, a positioning frame wall 2026 extending along its side length is provided. As shown, in such an embodiment according to the present invention, the spacer walls 2026 do not extend continuously around the entire length of the bottom plate 2025, but extend intermittently. The first opening 2028 is shown for applying power/signal lines of the first camera module 1. Similarly, the second opening 2029 is also an opening for applying power/control signal lines for controlling the prism 2012.

The prism base 202 shown in fig. 5 is divided into two different chambers by an intermediate partition 2027, one of which is a prism accommodation chamber 2022 for accommodating or disposing the prism unit 201. The other for accommodating the first camera module 1 is a first camera module accommodating chamber 2021.

A connecting wall 2023 is disposed on one side of the prism accommodating cavity 2022, and the connecting wall 2023 is used for connecting with the second camera module 3, and also plays a role in mutually precisely positioning the second camera module 3 when the second camera module 3 is mutually connected. In the prism accommodation chamber 2022, a support base for supporting the support shaft 2015 is further provided. A support shaft 2015 is fixedly supported on the support base so that prism 2012 can be moved by a drive mechanism.

According to the present invention, a first image pickup module 1 and a light steering mechanism 2 are provided on a prism base 202, respectively. One of the purposes of this arrangement is to align the prism unit 201 with the effective optical area constituted by the lenses in the first camera module 1. This is important for imaging quality. However, when two components or units are simultaneously provided on the prism base 202, the prism base 202 is caused to bear two parts having a certain weight. Thus, the middle portion of the prism base 202 becomes a relatively fragile portion of the entire base. When the dual-camera zoom module according to the present invention is subjected to relatively strong impact or vibration during use, the prism base 202 may be broken at the middle portion.

In order to avoid breakage of the middle portion of the prism base 202, a middle reinforcing plate 2024 is provided at the middle portion thereof according to the present invention. As can be seen in fig. 5, the intermediate stiffener 2024 extends through the prism base 202 across its entire width, along a direction perpendicular to the length of the prism base 202. The middle reinforcing plate 2024 has a certain thickness, thereby reinforcing the strength of the middle portion of the prism base 202. Breakage or damage of the intermediate reinforcement plate 2024 is effectively avoided. In addition, the intermediate reinforcing plate 2024 improves the overall rigidity of the prism base 202, so that the mounting base of the first image pickup module 1 and the prism unit 201 is more firm, and the positional relationship therebetween is ensured.

Referring to fig. 6, it can be seen that the other surface of the connecting wall 2023 at the end of the prism base 202 is provided with a positioning boss 2026. In this embodiment according to the present invention, four positioning bosses 2026 are provided. The four positioning projections 2026 are distributed at four corners of the surface of the connecting wall 2023. These positioning protrusions 2026 are used to cooperate with the positioning holes 301c on the camera housing 301 on the second rear camera module 3 to determine the connection position between the prism base 202 and the second camera module 3, so as to ensure that the optical axis of the prism 2012 and the optical axis of the lens in the second camera module 3 are coaxial with each other. At the same time, a through hole for passing light is also formed in the center portion of the connecting wall 2023. The light refracted by the prism 2012 will enter the second camera module 3 through the through hole, and reach the photosensitive chip through the lens therein.

The free end 2011c of the prism housing 2011 is also clearly shown in fig. 6. In this embodiment according to the invention, the two free ends 2011c are used for a fixed connection with the second rear camera module 3. This will be described in further detail later.

Fig. 7 shows a partial structure of the second camera module 3 according to the present invention.

In one embodiment according to the invention, the second camera module 3 comprises a camera housing 301. As shown in fig. 7, the imaging housing 301 has a hollow rectangular column shape, and has a housing portion 301a surrounding the hollow rectangular column, and a front panel 301e fixedly attached to one end of the housing portion 301 a. As shown in fig. 7, the front panel 301e has a length smaller than the width of the image pickup housing 301, because two connection portions 301b are provided at both ends of the image pickup housing 301 in the width direction, respectively. The two connection portions 301b are two recesses on the side of the image pickup housing 301. As can be seen in connection with the prism housing 2011 shown in fig. 6, in the assembled state, the free ends 2011c of the prism housing 2011 are fitted at the two recessed connection portions 301b on both sides of the end of the camera housing 301, and then the two are fixedly connected together by laser welding or bonding.

As shown in fig. 7, four positioning holes 301c are provided at four corners of the front panel 301e. These positioning holes 301c function as positioning holes when the second image pickup module 3 and the prism base 202 to which the prism unit 201 and the first image pickup module 1 are attached are fixed in combination with each other.

Also schematically shown in fig. 7 are a motor module 302, an anti-shake unit 303 and a support housing 304 in this embodiment according to the invention. These components are coaxially disposed, and the motor module 302 is installed in the anti-shake unit 303 and is movable in the anti-shake unit 303 under the driving of the driving mechanism to offset the deviation caused by shake. The anti-shake unit 303 is integrally mounted in the support case 304 and is movable in the support case 304 to drive a lens in the image pickup module to perform focusing.

In fig. 7, only the components of the second camera module 3 according to the invention are schematically represented, and not specifically detailed, for example, the drive magnets, the corresponding hall sensors, etc.

Fig. 8 schematically shows the state of interconnection of the light redirecting mechanism 2 and the second camera module 3 in one embodiment according to the invention.

After the prism unit 201 is integrally mounted to the prism base 202, a combination of the prism unit 201 and the prism base 202 as shown in fig. 6 is obtained. Then, an adhesive glue is applied to the end face of the prism base 202 facing the second camera module 3, and an adhesive glue is also applied to the corresponding end face of the second camera module 3, i.e., the front panel 301e of the camera housing 301.

Then, the four positioning projections 2026 on the prism base 202 and the four positioning holes 301c on the image pickup housing 301 of the second image pickup module 3 are aligned with each other, and then inserted into the positioning holes 301c. In this way, the second camera module 3 and the prism unit 201 are ensured to be aligned with each other.

After the above alignment is achieved, the free ends 2011c of the prism housing 2011 are fitted at the connection portions 301b of the two recesses on both sides of the end of the image pickup housing 301. The free end 2011c and the connecting portion 301b are fixedly connected by laser welding or bonding by applying glue. After connection, the combination shown in fig. 8 is obtained, but the first camera module 1 and the corresponding circuit board 4 located at the far right are omitted in fig. 8. The circuit board 4 may be attached to the rear surface of the second camera module 3 by means of bonding or the like.

The above description is only an embodiment of one aspect of the present invention, and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two camera zoom module, includes first camera module (1), light steering mechanism (2) and second camera module (3), wherein, first camera module (1) is wide-angle camera module, second camera module (3) is zoom camera module, second camera module (3) with light steering mechanism (2) constitute periscope formula camera module, light through light steering mechanism (2) reflection is incident to the camera lens of second camera module (3), a serial communication port, first camera module (1) with light steering mechanism (2) coplanar setting, the interval of the incident optical axis of first camera module (1) and the incident optical axis of light steering mechanism (2) is 5mm to 15mm;

the light steering mechanism (2) includes a prism unit (201) and a prism base (202), the prism unit (201) being rotatably supported in the prism base (202);

wherein the prism unit (201) comprises a prism housing (2011), a prism (2012), a prism seat (2013), a supporting shaft sleeve (2014) and a supporting shaft (2015); the prism shell (2011) is a rectangular frame and is provided with a bottom frame (2011 a) and two side frames (2011 b), one end of each side frame (2011 b) is fixedly connected with the bottom frame (2011 a), the other end of each side frame is a free end (2011 c) extending outwards, and a connecting cross beam (2011 d) is arranged between the two free ends (2011 c).

2. A dual camera zoom module according to claim 1, wherein the field angle of the first camera module (1) is 65 ° to 130 °, and the field angle of the second camera module (3) is 20 ° to 55 °.

3. A dual camera zoom module according to claim 1, wherein the effective focal length of the first camera module (1) is 2.5mm to 5.5mm and the effective focal length of the second camera module (3) is 3.5mm to 19.0mm.

4. A dual-camera zoom module according to one of claims 1 to 3, wherein the dual-camera zoom module is adapted to achieve a 1.5-to 3.5-fold optical zoom.

5. The dual camera zoom module of claim 1, wherein the prism base (202) comprises a first camera module receiving cavity (2021), a prism receiving cavity (2022), a connecting wall (2023), an intermediate stiffener (2024), and a bottom plate (2025); at least one positioning projection (2026) is provided on one surface of the connecting wall (2023).

6. The dual-camera zoom module according to claim 5, wherein the second camera module (3) comprises a camera housing (301), a motor module (302), an anti-shake unit (303), and a support case (304) coaxially disposed with each other;

wherein the camera housing (301) comprises a housing part (301 a), an optical axis opening (301 d), a positioning hole (301 c), a front panel (301 e) and a connecting part (301 b);

the connecting parts (301 b) are positioned at the end parts of the hollow rectangular columnar shell part (301 a) adjacent to the front panel (301 e), and at least two connecting parts are oppositely arranged.

7. The dual-camera zoom module according to claim 6, wherein the front panel (301 e) is fixedly connected to one end portion of the hollow rectangular columnar housing portion (301 a), the optical axis opening (301 d) is provided in the center of the front panel (301 e), and the positioning hole (301 c) is provided on the front panel (301 e).

8. A dual camera zoom module as claimed in claim 6, wherein the positioning protrusion (2026) is located in the positioning hole (301 c), and the free end (2011 c) is mutually engaged with and fixedly connected to the connecting portion (301 b); the housing part (301 a) is a hollow rectangular column, the front panel (301 e) is fixedly connected with one end part of the hollow rectangular column-shaped housing part (301 a), the optical axis opening (301 d) is arranged in the center of the front panel (301 e), and the positioning hole (301 c) is arranged on the front panel (301 e).