CN115428428B

CN115428428B - Periscope type camera module, multi-camera module and driving method of camera module

Info

Publication number: CN115428428B
Application number: CN202180027643.3A
Authority: CN
Inventors: 袁栋立; 王超; 蒋泽娇
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2020-04-24
Filing date: 2021-04-13
Publication date: 2024-07-02
Anticipated expiration: 2041-04-13

Abstract

The application discloses a periscope type camera module, a multi-camera module and a driving method of the camera module. This periscope formula module of making a video recording includes along sensitization route in proper order: a first light turning element for turning an external light beam to form a first light beam; the optical system comprises a lens group, an optical turning component and a photosensitive chip, wherein the optical turning component is used for folding light beams from the lens group. The periscope type camera module further comprises a driving component for driving the optical component to move along a specific direction so as to carry out optical adjustment. Thus, the periscope type camera shooting module can selectively realize an automatic focusing function or an optical anti-shake function by controlling the moving direction of the light turning component, and has relatively high adjustment efficiency.

Description

Periscope type camera module, multi-camera module and driving method of camera module

Technical Field

The present application relates to the field of camera modules, and more particularly, to periscope type camera modules, multi-camera modules, and driving methods of camera modules.

Background

With the popularity of mobile electronic devices (especially smart phones), the importance of camera modules applied to mobile electronic devices for helping users to obtain images (such as videos or images) is becoming more and more prominent.

In recent years, terminal electronic devices capable of simultaneously realizing near view and far view shooting are becoming popular in the market, and the requirements for far view shooting are becoming more and more advanced. However, the configuration of the camera module required for long-range shooting contradicts the development trend of miniaturization and thinning of terminal equipment: in order to achieve long-range shooting, the camera module needs to have a larger focal length, which necessarily results in an increase in the overall size (especially the height size) of the camera module in the conventional upright module design, which affects the application of the camera module to the terminal device.

For this reason, a scheme of realizing long-range shooting by turning an optical path, that is, a periscope type camera module, has been proposed in the market. Compared with the conventional vertical camera module, the periscope type camera module has the advantages that the optical system is special, the camera module is allowed to have a larger focal length through the bending of the optical path, and the height dimension of the periscope type camera module is similar to that of the vertical camera module, so that the assembly requirement of terminal equipment can be met.

Although the existing periscope type camera module realizes the capability of long-range shooting to a certain extent, the requirements of the market still cannot be well met. And compared with the conventional vertical camera module, the periscope type optical system is more complex in design and structure, and meanwhile, the periscope type camera module also meets the functions of optical anti-shake, automatic focusing and the like, and the factors limit the development of the periscope type camera module.

Disclosure of Invention

The application has the main advantages of providing a periscope type camera module, a multi-camera module and a driving method of the camera module, wherein the periscope type camera module has a specific optical system design so as to obtain better comprehensive performance in terms of the obtained optical performance and the difficulty of adjusting the optical system.

Another advantage of the present application is to provide a periscope type camera module, a multi-camera module, and a method of driving the camera module, wherein the periscope type camera module has a specific optical system design, so that it has a relatively more compact structural configuration. Specifically, the periscope type camera module may have a dimension in its length direction of 35 or less, a height dimension of 8mm or less, and a ratio of the dimension in its length direction to the dimension in its width direction is closer to 1.

Another advantage of the present application is to provide a periscope type camera module, a multi-camera module, and a driving method of the camera module, wherein the periscope type camera module adopts a specific optical system design, so that the periscope type camera module has a relatively long effective focal length, and particularly, in the embodiment of the present application, the effective focal length range of the periscope type camera module is greater than 15mm.

Another advantage of the present application is to provide a periscope type camera module, a multi-camera module, and a driving method of the camera module, wherein the periscope type camera module can achieve an optical adjustment efficiency of 2 times or more in a single space.

Another advantage of the present application is to provide a periscope type camera module, a multi-camera module, and a driving method of the camera module, wherein the periscope type camera module can selectively implement an auto-focusing function or an optical anti-shake function by controlling a moving direction of an optical element in the periscope type camera module.

According to an aspect of the present application, there is provided a periscope type camera module, including:

The first light turning element is used for turning an external light beam to form a first light beam, and a first optical axis of the first light beam is perpendicular to an external optical axis of the external light beam;

The lens group is corresponding to the first light turning unit and is used for receiving the first light beam to form a second light beam, and a second optical axis of the second light beam and a first optical axis of the first light beam correspond to a central axis set by the lens group;

The light turning component comprises a second light turning element and a third light turning element, the second light turning element corresponds to the first light turning element and is used for turning the second light beam to form a third light beam, and a third optical axis of the third light beam is perpendicular to a plane formed by the first optical axis and the external optical axis; the third turning element corresponds to the second light turning element and is used for turning the third light beam to form a fourth light beam, and a fourth optical axis of the fourth light beam is perpendicular to the third optical axis;

a driving assembly for driving at least a portion of the light turning assembly to move in a specific direction for optical adjustment; and

The photosensitive chip is corresponding to the light turning component and is used for receiving the light beam.

In the periscope type camera module according to the application, the driving component is configured for the second light turning element and the third light turning element to move along a specific direction.

In the periscope type camera module, the driving assembly comprises a first driving element for driving the second light turning element and a second driving element for driving the third light turning element.

In the periscope type camera module, the first driving element is used for driving the second light turning element to move at least along two directions; the second driving element is used for driving the third light turning element to move along at least two directions.

In the periscope type camera module, the driving component is suitable for driving the second light turning component and the third light turning component to move along the same direction of the third optical axis by the first driving component and the second driving component respectively so as to perform optical anti-shake.

In the periscope type camera module, the driving component is suitable for driving the second light turning component and the third light turning component to move along different directions of the third optical axis respectively by the first driving component and the second driving component so as to perform automatic focusing.

In the periscope type camera module, the driving component is suitable for driving the second light turning component and the third light turning component to move along different directions of the second optical axis respectively by the first driving component and the second driving component so as to perform optical anti-shake.

In the periscope type camera module, the driving component is configured to drive the first driving element and the second driving element to respectively drive the second light turning element and the third light turning element to move along the same direction of the second optical axis so as to perform automatic focusing.

In the periscope type camera module, the driving component is suitable for driving the second light turning component to move along the normal line of the second light turning component in a direction away from the lens group by the first driving component, and driving the third light turning component to move along the normal line of the third light turning component in a direction away from the lens group by the second driving component so as to perform automatic focusing.

In the periscope type camera module, the driving component is suitable for driving the second light turning component to move along the normal line of the second light turning component in a direction close to the lens group by the first driving component, and driving the third light turning component to move along the normal line of the third light turning component in a direction close to the lens group by the second driving component so as to perform automatic focusing.

In the periscope type camera module, the driving component is suitable for driving the second light turning component to move along the normal line of the second light turning component in a direction away from the lens group by the first driving component, and driving the third light turning component to move along the normal line of the third light turning component in a direction close to the lens group by the second driving component so as to perform optical anti-shake.

In the periscope type camera module, the driving component is suitable for driving the second light turning component to move along the normal line of the second light turning component in a direction close to the lens group by the first driving component, and driving the third light turning component to move along the normal line of the third light turning component in a direction far away from the lens group by the second driving component so as to perform optical anti-shake.

In the periscope type camera module according to the application, the light turning component further comprises a fourth light turning component, the fourth light turning component corresponds to the third light turning component and is used for turning the fourth light beam to form a fifth light beam, a fifth optical axis of the fifth light beam is perpendicular to the fourth optical axis, and the driving component further comprises a third driving component used for driving the fourth light turning component.

In the periscope type camera module, the third driving element is used for driving the fourth light turning element to move at least along two directions.

In the periscope type camera module, the effective focal length range of the periscope type camera module is larger than or equal to 15mm.

In the periscope type camera module, the dimension of the periscope type camera module in the length direction is less than or equal to 35mm, and the dimension of the periscope type camera module in the height direction is less than or equal to 8mm.

In the periscope type camera module according to the present application, the ratio of the dimension of the periscope type camera module in the length direction thereof to the dimension thereof in the width direction is in the range of 1 to 2.

According to still another aspect of the present application, there is also provided a multi-camera module, including:

The periscope type camera module is as described above; and

The ratio of the equivalent focal length of the periscope type camera module to the equivalent focal length of the second camera module is more than or equal to 3

In the multi-camera shooting module, the ratio of the equivalent focal length of the periscope type camera shooting module to the equivalent focal length of the second camera shooting module is more than or equal to 10.

According to still another aspect of the present application, there is also provided a driving method of a periscope type camera module, including:

driving the second light turning element and the third light turning element to move along a first preset direction so as to perform optical anti-shake; and/or

And driving the second light turning element and the third light turning element to move along a second preset direction so as to perform automatic focusing.

In the driving method of periscope type camera module according to the present application, driving the second light turning element and the third light turning element to move along a first preset direction to perform optical anti-shake includes:

The second light turning element and the third light turning element are driven to move in the same direction along the third optical axis.

driving the second light turning element to move along the normal line of the second light turning element in a direction away from the lens group by a first driving element; and

The third light turning element is driven by the second driving element to move along the normal line of the third light turning element in a direction approaching to the lens group.

Driving the second light turning element to move along the normal line of the second light turning element in a direction approaching the lens group by a first driving element;

The third light turning element is driven by the second driving element to move along the normal line of the third light turning element in a direction away from the lens group.

driving the second light turning element to move along the normal line of the second light turning element in a direction away from the lens group by a first driving element;

In the driving method of periscope type camera module according to the application, the driving of the second light turning element and the third light turning element along the second preset direction to perform automatic focusing includes:

the second light turning element and the third light turning element are driven to move along different directions of the third optical axis by a first driving element and a second driving element respectively.

The first driving element and the second driving element respectively drive the second light turning element and the third light turning element to move along the same direction of the second optical axis.

Driving the second light turning element to move along the normal line of the second light turning element in a direction approaching the lens group by a first driving element; and

The third light turning element is driven by the second driving element to move along the normal line of the third light turning element in a direction approaching to the lens group so as to perform automatic focusing.

In the driving method of the periscope type camera module according to the application, the method further comprises the following steps:

The fourth light turning element is driven to move along a third preset direction.

Further objects and advantages of the present application will become fully apparent from the following description and the accompanying drawings.

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

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing embodiments of the present application in more detail with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.

Fig. 1 illustrates a perspective view of an optical system of a periscope type camera module according to an embodiment of the present application.

Fig. 2 illustrates a schematic diagram of a periscope type camera module according to an embodiment of the application.

Fig. 3 illustrates a schematic diagram of a periscope type camera module according to an embodiment of the application.

Fig. 4 illustrates a schematic driving control diagram of the periscope type camera module according to an embodiment of the present application.

Fig. 5 illustrates another driving control schematic diagram of the periscope type camera module according to the embodiment of the application.

Fig. 6 illustrates still another driving control schematic diagram of the periscope type camera module according to the embodiment of the application.

Fig. 7 illustrates a schematic diagram of a variant implementation of the periscope type camera module and a driving control thereof according to an embodiment of the present application.

Fig. 8 illustrates a schematic diagram of a variant implementation of the periscope type camera module and driving control thereof according to an embodiment of the present application.

Fig. 9 illustrates another variant implementation of the periscope type camera module and a driving control schematic diagram thereof according to an embodiment of the present application.

Fig. 10 illustrates another variant implementation of the periscope type camera module and a driving control thereof according to an embodiment of the present application.

Fig. 11 illustrates a schematic diagram of still another variant implementation of the periscope type camera module and driving control thereof according to an embodiment of the present application.

Fig. 12 illustrates a schematic diagram of still another variant implementation of the periscope type camera module and driving control thereof according to an embodiment of the present application.

Fig. 13 illustrates a schematic diagram of still another variant implementation of the periscope type camera module and driving control thereof according to an embodiment of the present application.

Fig. 14 illustrates a schematic diagram of still another modification of the periscope type camera module and driving control thereof according to an embodiment of the present application.

Fig. 15 illustrates a schematic diagram of still another modification of the periscope type camera module and driving control thereof according to an embodiment of the present application.

Fig. 16 illustrates a schematic diagram of a multi-camera module according to an embodiment of the application.

Fig. 17 illustrates a schematic diagram of a multi-camera module according to an embodiment of the present application.

Fig. 18 illustrates a schematic diagram of a multi-camera module according to an embodiment of the present application.

Fig. 19 illustrates a schematic diagram of a multi-camera module according to an embodiment of the present application.

FIG. 20 illustrates a schematic diagram of a multi-camera module according to an embodiment of the application

Description of the embodiments

Hereinafter, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein.

Schematic camera module

Fig. 1 illustrates a perspective view of an optical system of a periscope type camera module having a specific optical system design scheme such that the periscope type camera module constructed around the optical system has a more compact structure in structure, according to an embodiment of the present application. In addition, the optical design scheme of the periscope type camera module is suitable for adjusting the optical performance of the periscope type camera module, and particularly, in the embodiment of the application, the periscope type camera module adopts a specific driving mode for optical adjustment, so that the periscope type camera module has relatively high optical adjustment efficiency.

As shown in fig. 1, the optical system of the periscope type camera module 80 according to the embodiment of the present application sequentially includes, along a photosensitive path thereof: the optical system comprises a first light turning element 21, a lens group 10, a light turning assembly 20 and a photosensitive chip 30, wherein the first light turning element 21 is used for receiving and turning a light beam from a photographed object to form a first light beam; the lens group 10 corresponds to the first light turning element 21 for receiving the first light beam to form a second light beam; the light turning component 20 corresponds to the lens group 10 for folding the second light beam to allow the periscope type module to have a relatively larger effective focal length; the photosensitive chip 30 corresponds to the light folding assembly and is configured to receive the imaging light beam from the light turning assembly 20. In particular, in the embodiment of the present application, the light turning component 20 is capable of reflecting the second light beam from the lens group 10 at least twice, that is, the light turning component 20 has at least two light turning surfaces. In particular, in the embodiment of the present application, the light turning component 20 includes at least two light turning elements for reflecting the second light beam from the lens group 10 for multiple times so as to perform light path folding, and in this way, the structural design of the periscope type camera module 80 is facilitated.

As shown in fig. 1, the light turning component 20 includes a second light turning element 22 and a third light turning element 23, where the second light turning element 22 corresponds to the lens group 10 and is used for turning the second light beam to form a third light beam; the third light turning element 23 corresponds to the second light turning element 22 and is used for turning the third light beam to form a fourth light beam. In the embodiment of the present application, the photosensitive chip 30 corresponds to the third light turning element 23, and is configured to receive the fourth light beam for imaging.

More specifically, in the embodiment of the present application, the first light turning element 21 is disposed at the light inlet of the periscope type camera module 80, and the external light beam is transmitted to the first light turning element 21 through the light inlet of the periscope type camera module 80 and reflected by the periscope type camera module to form a first light beam having a first optical axis, where the first optical axis of the first light beam is substantially perpendicular to the optical axis of the external light beam, that is, the first light turning element 21 turns the external light beam by substantially 90 °. In the embodiment of the present application, the first light turning element 21 has a first light turning surface 210, and the first light turning surface 210 forms an angle of substantially 45 ° with the axis of the external light beam, where the external light beam turns at the first light turning surface 210 to form the second light beam.

The lens group 10 corresponds to the first light turning element 21, more specifically, the lens group 10 is disposed behind the first light turning element 21 along the first optical axis direction, wherein the central axis of the lens group 10 is flush with the first optical axis. Accordingly, the first light beam passes through the lens group 10 to form a second light beam having a second optical axis, which is coaxial with the first optical axis.

The second light turning element 22 corresponds to the lens group 10, more specifically, the second light turning element 22 is disposed on one side of the lens group 10 along the second optical axis direction for turning the second light beam to form a third light beam, wherein the optical axis of the third light beam is substantially perpendicular to a plane set by the optical axes of the first optical axis (or the second optical axis) and the external light beam. In the embodiment of the present application, the second light turning element 22 has a second light turning surface 220, and the second light turning surface 220 forms an angle of substantially 45 ° with the second optical axis, where the second light beam turns at the second light turning surface 220 to form the third light beam.

The third light turning element 23 corresponds to the second light turning element 22, and more specifically, the third light turning element 23 is disposed on one side of the second light turning element 22 along the direction of the third optical axis, and is used for turning the third light beam to form a fourth light beam, where the fourth optical axis of the fourth light path is substantially perpendicular to the third optical axis. In the embodiment of the present application, the third light turning element 23 has a third light turning surface 230, and the third light turning surface 230 forms an angle of substantially 45 ° with the third optical axis, where the third light beam turns at the third turning surface to form the fourth light beam.

Accordingly, in the embodiment of the present application, the photosensitive path of the periscope type camera module 80 is: firstly, external light beams enter the periscope type camera module 80 through a light inlet of the periscope type camera module; then, the external beam turns 90 ° at the first light turning element 21 to form a first beam; the first light beam then passes through the lens group 10 to form a second light beam; then, the second light beam is turned again by 90 ° at the second light turning element 22 to form a third light beam; then, the third light beam is turned again by 90 ° at the third light turning element 23 to form a fourth light beam; finally, the fourth light beam is received by the photo-sensing chip 30 to perform an imaging reaction.

By the above optical system design, the beam path from the lens group 10 to the photosensitive chip 30 is folded, so that the periscope type camera module 80 can have a larger back focal length in a limited space, that is, the periscope type camera module 80 can have a larger effective focal length. In particular, in the embodiment of the present application, the Effective Focal Length (EFL) of the periscope type camera module 80 according to the embodiment of the present application may reach more than 15mm, and may even reach more than 20mm, for example, 15mm, 20mm, 25mm, 30mm, 35mm, etc.; the field angle FOV may be less than 25 °, even less than or equal to 20 °.

It should be understood that, when the periscope type camera module 80 has a relatively large effective focal length, if the optical system of the periscope type camera module 80 is not specially configured, the periscope type camera module 80 may have a long back focal length and an optical total length, which may result in an excessively long overall length of the periscope type camera module 80, and may also result in an excessively large aspect ratio of the periscope type camera module 80. Accordingly, in the embodiment of the present application, the first light turning element 21 turns the longitudinal external light beam into the transverse first light beam, so as to reduce the height dimension of the periscope type camera module 80, and in particular, in the embodiment of the present application, the dimension of the periscope type camera module 80 in the height direction thereof may be less than or equal to 8mm, or even less than or equal to 7mm. And, the light turning component 20 folds the light beam from the lens group 10 to effectively shorten the total length of the periscope type camera module 80. It should be noted that, in the embodiment of the present application, the first light turning element 21, the second light turning element 22 and the third light turning element 23 have special arrangements, so that the third light path is perpendicular to the plane set by the first light path and the second light path, so that the periscope type camera module 80 has a relatively more compact structure, particularly, as shown in fig. 2 and 3, in the embodiment of the present application, the dimension of the periscope type camera module 80 in the length direction thereof may be less than or equal to 35mm, and the ratio of the dimension in the length direction thereof and the dimension in the width direction thereof may be closer to 1, that is, the aspect ratio is closer to 1, wherein the length direction of the periscope type camera module 80 is the illustrated direction along the X axis, the width direction thereof is the direction along the Y axis, and the height direction thereof is the direction along the Z axis. More specifically, in the embodiment, the ratio of the dimension of the periscope type camera module 80 in the length direction to the dimension thereof in the width direction may be 2 or less, and further, may be 1.5 or less, and may even be 1.3 or less.

In a specific application example of the present application, when the periscope type camera module 80 is mounted on a terminal device (for example, a smart phone), the periscope type camera module 80 is closer to a square in shape due to the aspect ratio of the periscope type camera being closer to 1, which makes the arrangement of internal devices of the terminal device such as the smart phone more regular and compact. Also, when the periscope type camera module 80 is configured at the upper half of the terminal device such as a smart phone, the periscope type camera module 80 is reduced in size in the length direction thereof, so that the terminal device such as a smart phone can accommodate more devices in the width direction, the upper half structure thereof can be made more compact, and the terminal device such as a smart phone can leave more space for placing larger-sized electronic components, for example, a battery.

In the embodiment of the present application, the first light turning element 21, and the second light turning element 22 and the third light turning element 23 in the light turning assembly 20 may be implemented as any optical element having a reflective function, including but not limited to: turning prisms, planar mirrors, optical waveguides, gratings, etc.

Preferably, in the embodiment of the present application, the lens group 10 includes at least three optical lenses, wherein more preferably, the optical lens adjacent to the first light turning element 21 is a glass lens, and the glass lens has a relatively extremely high refractive index, so that the periscope type camera module 80 has a higher light entering amount. The remaining material of the optical lens is not limited to the present application, and may be made of a glass lens or other materials, for example, a plastic lens, etc., and it is preferable that the remaining optical lens is a plastic lens in consideration of the cost, weight, assembly, etc. of the lens group 10. More preferably, in the embodiment of the present application, the lens group 10 includes at least one optical lens having positive power and one optical lens having negative power to improve imaging quality.

It should be noted that, in other examples of the embodiment of the present application, an anti-shake motor (not shown) may be configured for the lens assembly 10 to actuate the lens assembly 10 to achieve the optical anti-shake effect.

Further, in the embodiment of the present application, the second light turning element 22 and the third light turning element 23 cooperate with each other to fold the second light beam from the lens group 10. It should be noted that the light turning member 20 constituted by the second light turning member 22 and the third light turning member is disposed between the lens group 10 and the photosensitive chip 30, and thus, an optical adjustment function can be achieved by adjusting the position of the light turning member 20 with respect to the photosensitive chip 30 and/or the lens group 10, and in particular, an automatic focusing and/or an optical anti-shake can be achieved by adjusting the relative positional relationship between the light turning member 20 with respect to the photosensitive chip 30 and the lens group 10.

Specifically, in the embodiment of the present application, the periscope type camera module 80 further provides a driving component 40, and the driving component 40 is used for driving at least a portion of the light turning component 20 to perform optical adjustment. In an embodiment of the application, the driving assembly 40 is configured for driving the second light turning element 22 and the third light turning element 23 to move in a specific direction for optical adjustment.

More specifically, in an embodiment of the present application, in one example, the driving component 40 is configured with driving elements for the second light turning element 22 and the third light turning element 23, respectively, and a first driving element 41 and a second driving element 42, respectively, where the first driving element 41 is used to actuate the second light turning element 22, and the second driving element 42 is used to actuate the third light turning element 23. Of course, in other examples of the present application, the driving component 40 may also drive the second light turning element 22 and the third light turning element 23 simultaneously for optical adjustment, for example, the second light turning element 22 and the third light turning element 23 are mounted on the same carrier, and then the carrier is driven by the driving component 40 to move the second light turning element 22 and the third light turning element 23 simultaneously, which is not limited by the present application.

Fig. 4 illustrates a schematic driving control diagram of the periscope type camera module 80 according to an embodiment of the present application. As shown in fig. 4, the driving assembly 40 can be configured such that the first driving element 41 and the second driving element 42 respectively drive the second light turning element 22 and the third light turning element 23 to move along the same direction of the third optical axis for optical anti-shake; or the driving assembly 40 can be configured such that the first driving element 41 and the second driving element 42 drive the second light turning element 22 and the third light turning element 23, respectively, to move along different directions of the third optical axis for auto-focusing.

Specifically, as shown in fig. 4, the driving component 40 can drive the light turning component 20 in 4 driving modes, wherein driving mode a: the second light turning element 22 and the third light turning element 23 are driven to move along a first direction, wherein the first direction is a direction along the third optical axis towards the second light turning element 22; drive mode B: the second light turning element 22 and the third light turning element 23 are driven to move along a second direction, which is a direction along the third optical axis towards the third light turning element 23. It should be appreciated that the combination of driving mode a and driving mode B may enable the periscopic camera module 80 to have optical anti-shake capability in the y-axis direction to compensate for the shake of the camera module in the y-axis direction. Driving mode C: the second light turning element 22 is driven to move along the first direction, and the third light turning element 23 is driven to move along the second direction, so that the image distance (i.e., the distance from the lens group 10 to the photosensitive chip 30) can be prolonged, and the object distance (i.e., the distance from the lens group 10 to the photographed object) can be reduced, thereby realizing close-up shooting. Driving mode D: the second light turning element 22 is driven to move along the second direction, and the third light turning element 23 is driven to move along the first direction, so that the image distance (i.e., the distance from the lens group 10 to the photosensitive chip 30) can be shortened, and the object distance (i.e., the distance from the lens group 10 to the photographed object) can be prolonged, thereby realizing long-range photographing. It should be noted that, the combination of the driving mode C and the driving mode D may enable the periscope type camera module 80 to enhance the auto-focusing capability, and it should be noted that, in the driving mode C or the driving mode D, moving the distance between the second light turning element 22 and the third light turning element 23 to be a may change the image distance of 2a, where the range of the adjustment distance a is 300um to 600um, compared with moving the conventional lens to auto-focus, the moving distance of the periscope type camera module 80 may be reduced by half, that is, the periscope type camera module 80 may achieve 2 times of optical adjustment efficiency in one time of space. Further, since the amount of movement of the driving unit 40 during auto-focusing is reduced, the overall size of the periscope type camera module 80 can be reduced.

Fig. 5 illustrates another driving control schematic diagram of the periscope type camera module 80 according to the embodiment of the application. As shown in fig. 5, the driving assembly 40 can be configured such that the first driving element 41 and the second driving element 42 respectively drive the second light turning element 22 and the third light turning element 23 to move along different directions of the second optical axis for optical anti-shake. Or the driving assembly 40 can be configured such that the first driving element 41 and the second driving element 42 drive the second light turning element 22 and the third light turning element 23 to move along the same direction of the second optical axis, respectively, for auto-focusing.

Specifically, as shown in fig. 5, the driving component 40 can drive the light turning component 20 in 4 driving modes, wherein driving mode E: the second light turning element 22 is driven to move along a third direction, and the third light turning element 23 is driven to move along a fourth direction, wherein the third direction is a direction along the second optical axis or the fourth optical axis away from the lens group 10 or the photosensitive chip 30, and the fourth direction is a direction along the second optical axis or the fourth optical axis close to the lens group 10 or the photosensitive chip 30; driving mode F: the second light turning element 22 is driven to move along the direction four, and the third light turning element 23 is driven to move along the direction three; the combination of driving mode E and driving mode F may enable the periscope type camera module 80 to have an optical anti-shake capability in the y-axis direction, so as to compensate for shake of the camera module in the y-axis direction. Drive mode G: the second light turning element 22 and the third light turning element 23 are driven to move along the direction three, so that the image distance can be prolonged, the object distance can be reduced, and the close-up shooting can be realized. Driving mode H: the second light turning element 22 and the third light turning element 23 are driven to move along the direction four, so that the image distance can be shortened, the object distance can be prolonged, and the long-range shooting can be realized. It should be appreciated that the combination of the driving mode G and the driving mode H may enable the periscope type camera module 80 to enhance the auto-focusing capability: moving the distance between the second light turning element 22 and the third light turning element 23 to a distance a can change the image distance of 2a, wherein the distance a is adjusted to 300 um-600 um, and compared with moving the lens to automatically focus, the moving distance of the scheme can be reduced by half, that is, the periscope type camera module 80 can realize 2 times of optical adjustment efficiency in a double space. Further, since the amount of movement of the driving unit 40 during auto-focusing is reduced, the overall size of the periscope type camera module 80 can be reduced.

Fig. 6 illustrates still another driving control schematic diagram of the periscope type camera module 80 according to the embodiment of the present application. As shown in fig. 6, the driving component 40 can be configured such that the first driving element 41 drives the second light turning element 22 to move along the normal line of the second light turning element 22 in a direction away from the lens group 10, and the second driving element 42 drives the third light turning element 23 to move along the normal line of the third light turning element 23 in a direction away from the lens group 10 for auto focusing. Alternatively, the driving component 40 can be configured such that the first driving element 41 drives the second light turning element 22 to move along the normal line of the second light turning element 22 in a direction approaching the lens group 10, and the second driving element 42 drives the third light turning element 23 to move along the normal line of the third light turning element 23 in a direction approaching the lens group 10, so as to perform autofocus. Or the driving component 40 can be configured such that the first driving element 41 drives the second light turning element 22 to move along the normal line of the second light turning element 22 in a direction away from the lens group 10, and the second driving element 42 drives the third light turning element 23 to move along the normal line of the third light turning element 23 in a direction close to the lens group 10, so as to perform optical anti-shake. Or the driving component 40 can be configured such that the first driving element 41 drives the second light turning element 22 to move along the normal line of the second light turning element 22 in a direction approaching the lens group 10, and the second driving element 42 drives the third light turning element 23 to move along the normal line of the third light turning element 23 in a direction away from the lens group 10, so as to perform optical anti-shake.

As shown in fig. 6, the driving unit 40 can drive the light turning unit 20 in 4 driving modes, wherein driving mode I: the second light turning element 22 is driven to move along a direction seven, and the third light turning element 23 is driven to move along a direction five, wherein the direction five is a direction away from the photosensitive chip 30 along a normal line of the third light turning element 23, and the direction seven is a direction along which the normal line of the second light turning element 22 approaches the lens group 10; drive mode J: the second light turning element 22 is driven to move along a direction eight, and the third light turning element 23 is driven to move along a direction six, wherein the direction six is a direction along which a normal line of the third light turning element 23 approaches the photosensitive chip 30, and the direction eight is a direction along which a normal line of the second light turning element 22 is away from the lens group 10. Particularly, the combination of the driving mode I and the driving mode J can enable the tele camera module to have anti-shake capacity in the y-axis direction. Driving mode K: the second light turning element 22 is driven to move along the direction eight, and the third light turning element 23 is driven to move along the direction five, so that the image distance can be prolonged, the object distance can be reduced, and the close-up shooting can be realized. Drive mode L: the second light turning element 22 is driven to move along the direction seven, and the third light turning element 23 is driven to move along the direction six, so that the image distance can be shortened, and the object distance can be prolonged to realize long-range shooting. It should be appreciated that the combination of the driving mode G and the driving mode H may enable the periscope type camera module 80 to enhance the auto-focusing capability: moving the distance between the second light turning element 22 and the third light turning element 23 to a distance a can change the image distance of 2a, wherein the distance a is adjusted to 300 um-600 um, and compared with moving the lens to automatically focus, the moving distance of the scheme can be reduced by half, that is, the periscope type camera module 80 can realize 2 times of optical adjustment efficiency in a double space. Further, since the amount of movement of the driving unit 40 during auto-focusing is reduced, the overall size of the periscope type camera module 80 can be reduced.

It should be noted that, in the embodiment of the present application, the periscope type camera module 80 may configure one or more combinations of driving modes ABCDEFGHIJKL to implement an optical adjustment function of optical anti-shake and/or auto-focusing.

In summary, the periscope type camera module 80 according to the embodiment of the application is illustrated, and the periscope type camera module 80 has a specific optical system design scheme, so that the periscope type camera module 80 constructed around the optical system has a more compact structure in structure. In addition, the periscope type camera module 80 has an optical design scheme suitable for adjusting the optical performance, and in particular, in the embodiment of the application, the periscope type camera module 80 adopts a specific driving mode for optical adjustment, so that the periscope type camera module 80 has relatively high optical adjustment efficiency.

Although, in the above embodiment, the light turning component 20 includes two light turning elements as an example, it should be understood by those skilled in the art that, in other examples of the embodiment of the present application, the light turning component further includes a greater number of light turning elements, or the light turning component 20 may be configured with a greater number of light turning surfaces to perform more folds on the light beam, so that the periscope type camera module 80 meets the structural design requirement.

For example, in the periscope type camera module 80 as illustrated in fig. 7 to 10, the light turning component 20 further includes a fourth light turning element 24, where the fourth light turning element 24 corresponds to the third light turning element 23 and is used for turning the fourth light beam to form a fifth light beam, and a fifth optical axis of the fifth light beam is perpendicular to the fourth optical axis. Accordingly, in the periscope type camera module 80 as illustrated in fig. 7 to 10, the driving component 40 may further configure a third driving component 43 for the fourth light turning component 24, so as to drive the fourth light turning component 24 through the third driving component 43, so as to match the adjustment of the second light turning component 22 and the third light turning component 23, thereby further improving the light adjustment efficiency. It should be appreciated that the driving control mode of the periscope camera module 80 may be changed with more possibilities and combinations after adding the fourth light turning element 24 and the third driving element 43.

More specifically, in the periscope type camera module 80 as illustrated in fig. 7 and 8, the driving assembly 40 can drive the light turning assembly 20 in a 4-in-driving mode.

Drive scheme A1: the second light turning element 22 and the third light turning element 23 are driven to move along a fourth direction, and the fourth light turning element 24 is driven to move along a first direction or a third direction, so that the image distance can be shortened, the object distance can be prolonged, and long-range shooting can be realized, wherein the first direction is a direction along the fourth optical axis approaching the photosensitive chip 30, the third direction is a direction along the second optical axis away from the lens group 10, and the fourth direction is a direction along which the second optical axis approaches the lens group 10.

The driving mode B1 is that the second light turning element 22 and the third light turning element 23 are driven to move along the third direction, and the fourth light turning element 24 moves along the second direction or the fourth direction, so that the image distance can be prolonged, the object distance can be reduced, and the close-up shooting can be realized, wherein the second direction is the direction along the third optical axis close to the third light turning element 23.

In particular, the combination of the driving mode A1 and the driving mode B1 may enhance the auto-focusing capability of the periscope type camera module 80. It should be understood that, in the driving mode A1 or the driving mode B1, the moving distance of the light turning element is a, which can change the image distance of 3a, improve the auto-focusing efficiency of the driving assembly 40, and reduce the moving amount of the auto-focusing of the driving assembly 40, so that the volume of each driving element in the driving assembly 40 can be reduced, and the volume of the periscope type image capturing module 80 can be reduced.

Drive scheme C1: the second light turning element 22 and the third light turning element 23 are driven to move along the second direction, and the fourth light turning element 24 is driven to move along the fourth direction or the second direction.

Drive mode D1: the second light turning element 22 and the third light turning element 23 are driven to move along the first direction, and the fourth light turning element 24 moves along the third direction or the first direction.

In particular, the combination of the driving method C1 and the driving method D1 may enable the periscopic camera module 80 to have anti-shake capability in the y-axis direction.

More specifically, in the periscope type camera module 80 as illustrated in fig. 9 and 10, the driving assembly 40 can drive the light turning assembly 20 in a 4-in-driving mode.

Drive scheme E1: the second light turning element 22 is driven to move along a direction seven, the third light turning element 23 is driven to move along a direction eight, and the fourth light turning element 24 is driven to move along a direction eight, so that an image distance can be shortened, an object distance can be prolonged, and long-range shooting can be realized, wherein the direction six is a direction along which a normal line of the third light turning element 23 approaches the photosensitive chip 30, the direction seven is a direction along which a normal line of the second light turning element 22 approaches the optical lens, and the direction eight is a direction along which a normal line of the second light turning element 22 is far away from the optical lens.

The driving mode F1 is that the second light turning element 22 moves along the direction eight, the second light turning element 22 is driven to move along the direction five, and the fourth light turning element 24 moves along the direction seven, so that the image distance can be prolonged, the object distance can be reduced, and the close-up shooting can be realized, wherein the direction five is the direction away from the photosensitive chip 30 along the normal line of the third light turning element 23.

In particular, the combination of the driving mode E1 and the driving mode F1 can enhance the auto-focusing capability of the periscope type camera module 80. It should be understood that, in the driving mode A1 or the driving mode B1, the moving distance of the light turning element is a, which can change the image distance of 3a, improve the auto-focusing efficiency of the driving assembly 40, and reduce the moving amount of the auto-focusing of the driving assembly 40, so that the volume of each driving element in the driving assembly 40 can be reduced, and the volume of the periscope type image capturing module 80 can be reduced.

Drive scheme G1: the second light turning element 22 is driven to move in direction seven, the third light turning element 23 remains stationary or is driven to move in direction five, and the fourth light turning element 24 is driven to move in direction seven.

Drive scheme H1: the second light turning element 22 is driven to move in the direction eight, the third light turning element 23 is kept stationary or driven to move in the direction six, and the fourth light turning element 24 is driven to move in the direction eight.

In particular, the combination of the driving mode G1 and the driving mode H1 can enable the tele camera module to have anti-shake capability in the y-axis direction.

As another example, in the periscope type camera module 80 as illustrated in fig. 11 and 15, the light turning component 20 further includes a fifth light turning element 25, where the fifth light turning element 25 corresponds to the fourth light turning element 24 and is used for turning the fifth light beam to form a sixth light beam, and a sixth optical axis of the sixth light beam is substantially perpendicular to the fifth optical axis. Accordingly, in the periscope type camera module 80 as illustrated in fig. 11 to 15, the driving component 40 may further configure a fourth driving component 44 for the fifth light turning component 25, so as to drive the fifth light turning component 25 through the fourth driving component 44, so as to match the adjustment of the second light turning component 22, the third light turning component 23 and the fourth light turning component 24, and further improve the light adjustment efficiency. It should be understood that, after the fifth light turning element 25 and the third driving element 43 are added, the driving control mode of the periscope type camera module 80 may be changed with more possibilities and combinations, which will not be described herein.

Schematic multi-camera shooting module

Further, the periscope type camera module 80 of the embodiment of the application can realize that the effective focal length exceeds 15mm, and further can realize that the effective focal length is more than or equal to 25mm through a multi-time light path turning design. The effective focal length f=24 mm, the diagonal length of the camera standard chip is 43.27mm, the diagonal length l= 5.238mm of the photosensitive chip 30 (wherein, in practical implementation, the diagonal length of the photosensitive chip 30 may be adjusted), p=f43.27/L, that is, p=f43.27, and the equivalent focal length p=24×43.27/5.238 × 198.26mm of the periscope type camera module 80 may be obtained through calculation, that is, if at least one second camera module 90 is further configured to the periscope type camera module 80 to form the multi-camera module 100, as shown in fig. 16, for example, the equivalent focal length P2 of the second camera module 90 is 19.5mm, P/P2 is about 10, and then, as shown in fig. 16, 10 times of optical zoom may be achieved, and as shown in fig. 33mm, P/P2 is about 6, the equivalent focal length P2 of the second camera module 90 may be achieved.

In the application of the periscope type camera module 80, for example, the periscope type camera module 80 is assembled on a smart phone, and the second camera module 90 with the ratio of P/P2 being more than or equal to 6 can be selected to be matched and used in a terminal device, so that the multi-camera module 100 can realize optical zooming of more than 6 times, even more than 10 times. Of course, in other application scenarios, as shown in fig. 17 to 20, in the three-shot camera module shown in fig. 17 to 19, it is assumed that P is an equivalent focal length of the periscope camera module 80, P2 is an equivalent focal length of the second camera module 90, P3 is an equivalent focal length of the third camera module 91, P/p2≡10, and p3/p2≡5 (P3/p2≡3), so as to implement optical zooming more than 3 times smooth, optical zooming 5 times smooth, and optical zooming 10 times smooth, which is not limited by the present application.

Schematic driving method

According to another aspect of the present application, there is also provided a driving method of the periscope type camera module 80, including:

according to still another aspect of the present application, there is also provided a driving method of the periscope type camera module 80, which includes: driving the second light turning element 22 and the third light turning element 23 to move along a first preset direction so as to perform optical anti-shake; and/or driving the second light turning element 22 and the third light turning element 23 to move along a second preset direction for automatic focusing.

In the driving method according to an embodiment of the present application, in one example, driving the second light turning element 22 and the third light turning element 23 to move along a first preset direction for optical anti-shake includes: the second light turning element 22 and the third light turning element 23 are driven to move in the same direction along the third optical axis.

In the driving method according to an embodiment of the present application, in one example, driving the second light turning element 22 and the third light turning element 23 to move along a first preset direction for optical anti-shake includes:

Driving the second light turning element 22 by a first driving element 41 to move along the normal line of the second light turning element 22 in a direction away from the lens group 10; and driving the third light turning element 23 by a second driving element 42 to move along the normal line of the third light turning element 23 in a direction approaching the lens group 10.

In the driving method according to an embodiment of the present application, in one example, driving the second light turning element 22 and the third light turning element 23 to move along a first preset direction for optical anti-shake includes: driving the second light turning element 22 by a first driving element 41 to move along the normal line of the second light turning element 22 in a direction approaching the lens group 10; and driving the third light turning element 23 by a second driving element 42 to move along the normal line of the third light turning element 23 in a direction away from the lens group 10.

In the driving method according to an embodiment of the present application, in one example, driving the second light turning element 22 and the third light turning element 23 to move along a first preset direction for optical anti-shake includes: driving the second light turning element 22 by a first driving element 41 to move along the normal line of the second light turning element 22 in a direction away from the lens group 10; and driving the third light turning element 23 by a second driving element 42 to move along the normal line of the third light turning element 23 in a direction approaching the lens group 10.

In the driving method according to the embodiment of the present application, in one example, driving the second light turning element 22 and the third light turning element 23 to move in the second preset direction for auto-focusing includes: the second and third light turning elements 22, 23 are driven by a first and a second driving element 41, 42, respectively, to move in different directions along the third optical axis.

In the driving method according to the embodiment of the present application, in one example, driving the second light turning element 22 and the third light turning element 23 to move in the second preset direction for auto-focusing includes: the second light turning element 22 and the third light turning element 23 are driven to move along the same direction of the second optical axis by the first driving element 41 and the second driving element 42, respectively.

In the driving method according to the embodiment of the present application, in one example, driving the second light turning element 22 and the third light turning element 23 to move in the second preset direction for auto-focusing includes: driving the second light turning element 22 by a first driving element 41 to move along the normal line of the second light turning element 22 in a direction away from the lens group 10; and driving the third light turning element 23 by a second driving element 42 to move along the normal line of the third light turning element 23 in a direction away from the lens group 10.

In the driving method according to the embodiment of the present application, in one example, driving the second light turning element 22 and the third light turning element 23 to move in the second preset direction for auto-focusing includes: driving the second light turning element 22 by a first driving element 41 to move along the normal line of the second light turning element 22 in a direction approaching the lens group 10; and driving the third light turning element 23 to move along the normal line of the third light turning element 23 in a direction approaching the lens group 10 by a second driving element 42 to perform auto-focusing.

In a driving method according to an embodiment of the present application, in one example, the method further includes: the fourth light turning element 24 is driven to move along a third preset direction.

It should be understood that, by the driving manner described above, the periscope type camera module 80 can achieve an optical adjustment efficiency of 2 times or more in a single space. In addition, the periscope type camera module 80 can selectively realize an automatic focusing function or an optical anti-shake function by controlling the moving direction of the optical element in the periscope type camera module 80.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims

1. Periscope type camera module, its characterized in that includes along sensitization route in proper order:

The first light turning element is used for receiving and turning an external light beam to form a first light beam, and a first optical axis of the first light beam is perpendicular to an external optical axis of the external light beam;

A lens group for receiving the first light beam to form a second light beam, a second optical axis of the second light beam being coaxial with a first optical axis of the first light beam;

The light turning component comprises a second light turning component and a third light turning component, wherein the second light turning component corresponds to the lens group and is provided with a second light turning surface, and an included angle of 45 degrees is formed between the second light turning surface and the second optical axis, so that the second light beam is turned on the second light turning surface to form a third light beam; the third light turning element corresponds to the second light turning element and is provided with a third light turning surface, an included angle of 45 degrees is formed between the third light turning surface and a third optical axis of the third light beam, and the third light beam turns on the third light turning surface to form a fourth light beam;

A driving assembly driving at least a portion of the light turning assembly to move along a specific direction for optical adjustment, wherein the driving assembly comprises a first driving element and a second driving element, wherein the driving assembly is adapted to drive the second light turning element and the third light turning element to move along the same direction of the third optical axis with the first driving element and the second driving element, respectively, for optical anti-shake, wherein the driving assembly is adapted to drive the second light turning element and the third light turning element to move along different directions of the second optical axis with the first driving element and the second driving element, respectively, for optical anti-shake; and

The photosensitive chip corresponds to the third light turning element and is used for receiving the fourth light beam so as to image.

2. The periscope type camera module of claim 1, wherein a third optical axis of the third light beam is perpendicular to a plane formed by the first optical axis and the external optical axis, and a fourth optical axis of the fourth light beam is perpendicular to the third optical axis.

3. The periscope type camera module of claim 2, wherein the second light turning surface is perpendicular to the third light turning surface.

4. A periscope type camera module according to claim 3, wherein the first driving element is used for driving the second light turning element to move at least along two directions, and the second driving element is used for driving the third light turning element to move at least along two directions.

5. The periscope type camera module of claim 4, wherein the driving assembly is adapted to drive the second light turning element and the third light turning element to move along different directions of the third optical axis with the first driving element and the second driving element, respectively, for auto-focusing.

6. The periscope type camera module of claim 4, wherein the driving assembly is configured to drive the first driving element and the second driving element to move the second light turning element and the third light turning element along the same direction of the second optical axis respectively for automatic focusing.

7. The periscope type camera module of claim 4, wherein the driving component is suitable for driving the second light turning component to move along the normal line of the second light turning component in a direction away from the lens group by the first driving component, and driving the third light turning component to move along the normal line of the third light turning component in a direction away from the lens group by the second driving component so as to perform automatic focusing.

8. The periscope type camera module according to claim 4, wherein the driving component is suitable for driving the second light turning component to move along the normal line of the second light turning component in a direction close to the lens group by the first driving component, and driving the third light turning component to move along the normal line of the third light turning component in a direction close to the lens group by the second driving component so as to perform automatic focusing.

9. The periscope type camera module according to claim 4, wherein the driving component is suitable for driving the second light turning component to move along the normal line of the second light turning component in a direction away from the lens group by the first driving component, and driving the third light turning component to move along the normal line of the third light turning component in a direction close to the lens group by the second driving component so as to perform optical anti-shake.

10. The periscope type camera module according to claim 4, wherein the driving component is suitable for driving the second light turning component to move along the normal line of the second light turning component in a direction close to the lens group by the first driving component, and driving the third light turning component to move along the normal line of the third light turning component in a direction far away from the lens group by the second driving component so as to perform optical anti-shake.

11. The periscope type camera module of claim 4, wherein the light turning component further comprises a fourth light turning element corresponding to the third light turning element for turning the fourth light beam to form a fifth light beam, a fifth optical axis of the fifth light beam being perpendicular to the fourth optical axis, the driving component further comprising a third driving element for driving the fourth light turning element.

12. The periscope type camera module of claim 11, wherein the third driving element is configured to drive the fourth light turning element to move at least along two directions.

13. The periscope type camera module of any one of claims 1-12, wherein the effective focal length of the periscope type camera module is greater than 15mm.

14. The periscope type camera module according to any one of claims 1-12, wherein the periscope type camera module has a dimension in a length direction of 35mm or less, and the periscope type camera module has a dimension in a height direction of 8mm or less.

15. The periscope type camera module according to claim 14, wherein a ratio of a dimension of the periscope type camera module in a length direction thereof to a dimension thereof in a width direction is in a range of 1 to 2.

16. A multi-camera module, comprising:

The periscope type camera module according to any one of claims 1-15; and

And the ratio of the equivalent focal length of the periscope type camera module to the equivalent focal length of the second camera module is more than or equal to 3.

17. The multi-camera module of claim 16, wherein a ratio of an equivalent focal length of the periscope camera module to an equivalent focal length of the second camera module is greater than or equal to 10.

18. A driving method of a periscope type camera module for driving the periscope type camera module according to any one of claims 1 to 3, comprising:

19. The driving method of the periscope type camera module according to claim 18, wherein driving the second light turning element and the third light turning element to move along a first preset direction for optical anti-shake comprises:

20. The driving method of the periscope type camera module according to claim 18, wherein driving the second light turning element and the third light turning element to move along a first preset direction for optical anti-shake comprises:

21. The driving method of the periscope type camera module according to claim 18, wherein driving the second light turning element and the third light turning element to move along a second preset direction for automatic focusing comprises:

22. The driving method of the periscope type camera module according to claim 18, wherein driving the second light turning element and the third light turning element to move along a second preset direction for automatic focusing comprises:

23. The driving method of the periscope type camera module according to claim 18, wherein driving the second light turning element and the third light turning element to move along a second preset direction for automatic focusing comprises:

24. The driving method of the periscope type camera module according to claim 18, wherein driving the second light turning element and the third light turning element to move along a second preset direction for automatic focusing comprises:

25. The driving method of periscope type camera module according to claim 18, further comprising:

The fourth light turning element of the driving component is driven to move along a third preset direction.