WO2021213218A1

WO2021213218A1 - Periscopic photographing module, multi-camera photographing module, and electronic device

Info

Publication number: WO2021213218A1
Application number: PCT/CN2021/086951
Authority: WO
Inventors: 王超; 袁栋立
Original assignee: 宁波舜宇光电信息有限公司
Priority date: 2020-04-24
Filing date: 2021-04-13
Publication date: 2021-10-28
Also published as: CN115443646A; CN113645373A; CN113645373B

Abstract

Disclosed are a periscopic photographing module, a multi-camera photographing module, and an electronic device. The periscopic photographing module comprises: a lens group, a photosensitive chip, and a light deflection assembly, which light deflection assembly comprises a first light deflection element corresponding to the lens group, and a second light deflection element corresponding to the photosensitive chip. Imaging light passing through the lens group has a certain angle of divergence, and the first light deflection element and the second light deflection element have a predetermined structural configuration for compensating for the angle of divergence, so as to guarantee that the first light deflection element and the second light deflection element can completely receive and deflect the imaging light, thereby guaranteeing the imaging quality.

Description

Periscope camera module, multi-camera camera module and electronic equipment

Technical field

This application relates to the field of camera modules, and more specifically, to periscope camera modules, multi-camera camera modules, and electronic equipment.

Background technique

In recent years, terminal electronic devices capable of simultaneously realizing close-range and long-range shooting have become more and more popular in the market, especially for long-range shooting requirements. In order to achieve long-range shooting, the camera module needs to have a larger focal length. In the traditional linear module design, the overall size of the camera module will increase, which will affect the application of the camera module in terminal equipment, that is, The camera module configuration required for long-range shooting contradicts the development trend of miniaturization and thinning of terminal equipment.

For this reason, a solution to realize long-range shooting by turning the light path has been proposed on the market, that is, a periscope camera module. Compared with the conventional linear camera module, the optical system of the periscope camera module is more special. It increases the focal length of the module by bending the optical path, but its height is similar to that of the linear module. , Can meet the assembly requirements of terminal equipment.

Although the existing periscope camera module has been able to achieve the ability of long-range shooting to a certain extent, compared with the existing linear camera module, the periscope camera module has a relatively long rear focus. The characteristics of the periscope camera module require more error factors to be considered in the optical design process of the periscope camera module, because a small error causes a large error accumulation after the light transmission through a long focal length and affects the final imaging quality.

Summary of the invention

The main advantage of the present application is to provide a periscope camera module, a multi-camera camera module, and electronic equipment. The element has a predetermined structural configuration for compensating the divergence angle formed by the imaging light after passing through the lens group, so as to improve the imaging quality.

According to an aspect of the present application, a periscope camera module is provided, which includes:

Lens group, the imaging light passing through the lens group forms a certain divergence angle;

A photosensitive chip for receiving the imaging light for imaging; and

A light-reflection assembly arranged on the photosensitive path of the photosensitive chip, the light-reflection assembly comprising a first light-reflection element and a second light-reflection element; the first light-reflection element has a first light-reflection element corresponding to the lens group A light turning surface for turning the imaging light from the lens group, wherein the first light turning surface has a first preset structure configuration for compensating the divergence angle;

The second light-reflecting element corresponds to the photosensitive chip, and the second light-reflecting element has a second light-reflecting surface for turning the imaging light to the photosensitive chip, wherein the second light-reflecting mask There is a second preset structure configuration for compensating the divergence angle.

In the periscope camera module according to the present application, the first preset structure configuration includes a preset distance between the first light turning surface and the lens group, and the first light turning The face has a first preset size.

In the periscope camera module according to the present application, the second preset structure configuration includes that the second light turning surface has a second preset size.

In the periscope camera module according to the present application, the projection of the imaging light on the first light-reflecting surface accounts for a first proportion of the first light-reflecting surface that is smaller than that of the imaging light on the second light. The projection of the turning surface accounts for a second proportion of the second light turning surface.

In the periscope camera module according to the present application, the first distance between the projection edge of the imaging light on the first light turning surface and the edge of the first light turning surface is greater than the distance between the imaging light and the edge of the first light turning surface. The second distance between the projection edge of the second light turning surface and the edge of the second light turning surface.

In the periscope camera module according to the present application, the first preset size is equal to the second preset size.

In the periscope camera module according to the present application, the first preset size is smaller than the second preset size.

In the periscope camera module according to the present application, the lens group is arranged on the light incident surface of the periscope camera module.

In the periscope camera module according to the present application, the angle between the first light turning surface and the optical axis set by the lens group is 45°.

In the periscope camera module according to the present application, the angle between the second light turning surface and the photosensitive axis set by the photosensitive chip is 45°.

In the periscope camera module according to the present application, the effective focal length of the periscope camera module ranges from 15 mm to 25 mm.

In the periscope camera module according to the present application, the aperture value of the periscope camera module is less than F4.0.

In the periscope camera module according to the present application, the light reflex component further includes a third light reflex element for receiving the imaging light from the outside and turning the imaging light to the lens group.

In the periscope camera module according to the present application, the light turning component further includes at least one third light turning element arranged between the first light turning element and the second light turning element.

In the periscope camera module according to the present application, the size of the third light-reflecting surface of the third light-reflecting element is larger than the first predetermined size and smaller than the second predetermined size.

According to another aspect of the present application, a multi-camera camera module is also provided, which includes:

The periscope camera module as described above; and

The second camera module, wherein the ratio of the equivalent focal length of the periscope camera module to the equivalent focal length of the second camera module is greater than or equal to 6.

In the multi-camera camera module according to the present application, the ratio of the equivalent focal length of the periscope camera module to the equivalent focal length of the second camera module is greater than or equal to 10.

According to another aspect of the present application, there is also provided an electronic device, which includes:

The main body of the electronic equipment; and

The multi-camera camera module assembled in the main body of the electronic device, wherein the multi-camera camera module includes:

The periscope camera module as described above; and

According to another aspect of the present application, there is also provided an electronic device, which includes the above-mentioned periscope camera module.

Through the understanding of the following description and drawings, the further purposes and advantages of this application will be fully embodied.

These and other objectives, features and advantages of this application are fully embodied by the following detailed description, drawings and claims.

Description of the drawings

Through a more detailed description of the embodiments of the present application in conjunction with the accompanying drawings, the above and other objectives, features, and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the application, and constitute a part of the specification. Together with the embodiments of the application, they are used to explain the application, and do not constitute a limitation to the application. In the drawings, the same reference numerals generally represent the same components or steps.

Fig. 1 illustrates a schematic diagram of an optical system of a periscope camera module according to an embodiment of the present application.

Fig. 2 illustrates a schematic diagram of the optical path propagation of the periscope camera module according to an embodiment of the present application.

FIG. 3 illustrates a comparison schematic diagram of the projection of the imaging light on the first light-reflecting surface and the projection of the imaging light on the second light-reflecting surface in the periscope camera module according to an embodiment of the present application.

Fig. 4 illustrates a schematic diagram of a modified implementation of the periscope camera module according to an embodiment of the present application.

FIG. 5 illustrates a schematic diagram of an optical system of another periscope camera module according to an embodiment of the present application.

FIG. 6 illustrates a schematic diagram of light path propagation of another periscope camera module according to an embodiment of the present application.

FIG. 7 illustrates a comparison schematic diagram of the projection of the imaging light on the first light-reflecting surface and the projection of the imaging light on the third light-reflecting surface in the periscope camera module according to an embodiment of the present application.

FIG. 8 illustrates a comparison schematic diagram of the projection of the imaging light on the third light-reflecting surface and the projection of the imaging light on the second light-reflecting surface in another periscope camera module according to an embodiment of the present application.

FIG. 9 illustrates a schematic diagram of a modified implementation of another periscope camera module according to an embodiment of the present application.

FIG. 10A illustrates a schematic diagram of another optical system of a periscope camera module according to an embodiment of the present application.

FIG. 10B illustrates a schematic diagram of another optical system of a periscope camera module according to an embodiment of the present application.

FIG. 10C illustrates a schematic diagram of another optical system of a periscope camera module according to an embodiment of the present application.

FIG. 11 illustrates a schematic diagram of a multi-camera camera module according to an embodiment of the present application.

Fig. 12 illustrates a schematic diagram of an electronic device according to an embodiment of the present application.

Fig. 13 illustrates another schematic diagram of an electronic device according to an embodiment of the present application.

Detailed ways

Hereinafter, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited by the exemplary embodiments described herein.

Application overview

As mentioned above, although the existing periscope camera modules have been able to achieve the capability of long-distance shooting to a certain extent, for example, the camera modules disclosed in Chinese patent CN110398872A and Chinese patent CN110879454A have a long rear focus. , Can realize the long-range shooting function. However, compared with the linear camera module, the periscope camera module has a relatively longer back focus characteristic, which requires more error factors to be considered in the optical design process of the periscope camera module, because the slight error is The transmission of long focal length light leads to a large accumulation of errors and affects the final imaging quality.

Specifically, the imaging light will scatter to a certain extent after passing through the lens group, that is, the imaging light passing through the lens group has a certain divergence angle. The divergence angle is relatively small. If it is a linear camera module, its optical back focus is short, and the existence of the divergence angle has almost no effect on its optical performance and imaging quality. Therefore, in the existing linear camera module , The imaging light is usually simplified to parallel light. However, in the periscope camera module, it has a relatively long optical back focus, and the imaging light with a certain divergence angle will continue to diffuse during a long optical path, which may cause the reflective surface of the subsequent reflective element The imaging light cannot be received, resulting in a decrease in the amount of light that eventually reaches the photosensitive chip, which affects the imaging quality.

That is to say, in the design of the optical system of the periscope camera module, the imaging light passing through the lens group has a certain divergence angle, and the influence caused by this optical phenomenon cannot be ignored.

In view of the above-mentioned research and development status, the basic idea of this application is to consider that the imaging light will be scattered after passing through the lens group. Therefore, in the optical system design of the periscope camera module, the light deflecting behind the lens group The element has a predetermined structural configuration for compensating the divergence angle formed by the imaging light after passing through the lens group to ensure that the light-reflecting element can completely receive and divert the imaging light. In this way, the periscope camera module is improved The sensitivity of the photosensitive chip to improve its imaging quality.

Based on this, the present application proposes a photosensitive component, which includes: a lens group, the imaging light passing through the lens group forms a certain divergence angle; a photosensitive chip for receiving the imaging light for imaging; and The light-reflection component on the photosensitive path of the photosensitive chip, the light-reflection component includes a first light-reflection element and a second light-reflection element; the first light-reflection element has a first light-reflection element corresponding to the lens group The surface is used to divert the imaging light from the lens group, wherein the first light-reflecting surface has a first preset structure configuration for compensating the divergence angle; the second light-reflecting element corresponds to the In the photosensitive chip, the second light-reflecting element has a second light-reflecting surface for turning the imaging light to the photosensitive chip, wherein the second light-reflecting surface has a second light-reflecting surface for compensating the divergence angle Preset structure configuration. In this way, the light-reflecting element arranged behind the lens group has a predetermined structural configuration for compensating the divergence angle formed by the imaging light after passing through the lens group, so as to ensure that the light-reflecting element can completely receive and divert the imaging light through such a configuration. In this way, the sensitivity of the photosensitive chip of the periscope camera module is increased to improve its imaging quality.

After introducing the basic principles of the present application, various non-limiting embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Example one

FIG. 1 illustrates a schematic diagram of an optical system of a periscope camera module according to an embodiment of the present application. As shown in FIG. 1, the periscope camera module 100 according to an embodiment of the present application includes a lens group 10, The photosensitive chip 30 and the light-reflection assembly 20, wherein at least a part of the light-reflection assembly 20 is disposed between the lens group 10 and the photosensitive chip 30 for folding imaging light passing through the lens group 10, The size of the periscope camera module 100 can be controlled by folding the optical path. In the embodiment of the present application, the light reflex component 20 includes at least two light reflex elements arranged between the lens group 10 and the photosensitive chip 30, and are used for multiplying the imaging light passing through the lens group 10 Times reflection. Here, the multiple reflection of the imaging light is equivalent to the folding of the imaging light.

In particular, in the periscope camera module 100 as shown in FIG. 1, the light turning component 20 includes two light turning elements, namely a first light turning element 21 and a second light turning element 22, Wherein, the first light refraction element 21 corresponds to the lens group 10, and is used to receive imaging light from the lens group 10 and divert the imaging light to the second light refraction element 22. The two-light turning element 22 corresponds to the photosensitive chip 30 and is used for turning the imaging light to the photosensitive chip 30. In the embodiment of the present application, the light-reflecting element is an optical element with light reflection capability, which includes, but is not limited to, a turning prism, a plane mirror, an optical waveguide, a grating, and the like. In particular, in the periscope camera module 100 as shown in FIG. 1, the first light turning element 21 and the second light turning element 22 are implemented as turning prisms, which have a first light-reflecting prism. A light turning surface 210 and a second light turning surface 220, that is, the first light turning element 21 has a first light turning surface 210 corresponding to the lens group 10 for turning all the light from the lens group 10 For the imaging light, the second light-reflecting element 22 has a second light-reflecting surface 220 for turning the imaging light to the photosensitive chip 30.

As described above, the imaging light will scatter after passing through the lens group 10, that is, the imaging light passing through the lens group 10 has a certain divergence angle. For ease of description, this divergence angle is defined as α, where the value of the angle α is relatively small, for example, the range is between 0.05° and 5°. In order to compensate for the divergence angle, in the embodiment of the present application, the first light turning surface 210 is configured to have a first preset structure for compensating the divergence angle, and the second light turning surface 220 is configured to have A second preset structure for compensating the divergence angle.

Specifically, in the embodiment of the present application, the first preset structure configuration of the first light-reflection element 21 includes the first light-reflection surface 210 of the first light-reflection element 21 and the lens group 10 has a predetermined distance between them, and the first light-reflecting surface 210 has a first predetermined size. Through the above configuration, it is ensured that the first light-reflecting surface 210 can completely receive and refract the lens group 10 The imaging light. It should be understood that the specific values of the preset distance and the first preset size are affected by the optical parameters of the lens group 10, and they are not determined values.

In the application embodiment, the second preset structure configuration of the second light-reflection element 22 includes a predetermined gap between the second light-reflection surface 220 of the second light-reflection element 22 and the photosensitive chip 30. Set a distance, and the second light-reflecting surface 220 has a second preset size. Through the above configuration, it is ensured that the second light-reflecting surface 220 can completely receive and convert the imaging from the first light-reflecting surface 210 Light reaches the photosensitive chip 30. Those of ordinary skill in the art should know that in the camera module, there is a preset optical back focus between the lens group 10 and the photosensitive chip 30, that is, the distance between the last optical lens in the lens group 10 and the photosensitive chip 30 is predetermined Set values, that is, in the embodiment of the present application, the distance a between the last optical lens of the lens group 10 and the first light-reflecting surface 210, the distance a between the first light-reflecting surface 210 and the first light-reflecting surface 210 The sum of the distance b between the two light turning surfaces 220 and the distance C between the second light turning surface 220 and the photosensitive chip 30 is a preset value, that is, a+b+c= Predetermined value. That is, the predetermined distance a between the first light-reflecting surface 210 and the lens group 10 and the premise that the predetermined distance c is determined between the second light-reflecting surface 220 and the photosensitive chip 30 Next, the distance b between the first light turning surface 210 and the second light turning surface 220 is a certain value.

FIG. 2 illustrates a schematic diagram of light path propagation of the periscope camera module 100 according to an embodiment of the present application. As shown in FIG. 2, the imaging light passing through the lens group 10 forms a certain divergence, and then the imaging light with a certain divergence angle is turned close to 90° at the first light turning surface 210 to the first light turning surface 210. The second light-reflecting surface 220, and then, the imaging light is deflected to the photosensitive chip 30 at the second light-reflecting surface 220 by approximately 90°.

In particular, in the periscope camera module 100 as shown in FIGS. 1 and 2, the first predetermined size of the first light turning surface 210 and the size of the second light turning surface 220 are The second preset size is consistent, and, during the propagation of the light path, the projection of the imaging light on the first light turning surface 210 accounts for a first proportion of the first light turning surface 210 less than the imaging light The projection on the second light turning surface 220 accounts for a second proportion of the second light turning surface 220, as shown in FIG. 3. That is, in the embodiment of the present application, the area size of the first light-reflecting surface 210 and the second light-reflecting surface 220 are the same, and the projection of the imaging light on the first light-reflecting surface 210 The first distance between the edge and the edge of the first light turning surface 210 is greater than the first distance between the projection edge of the imaging light on the second light turning surface 220 and the edge of the second light turning surface 220 Two distances, as shown in Figure 3.

It is worth mentioning that in the embodiment of the present application, the first preset size is consistent with the second preset size. A certain error can be understood as the possible processing errors in different or the same batches in the processing of the optical transition element, which may lead to deviations in size or shape, but it is worth mentioning that the deviation is controlled within ±5% in principle.

FIG. 4 illustrates a schematic diagram of a modified implementation of the periscope camera module 100 according to an embodiment of the present application. As shown in FIG. 4, in this modified embodiment, the first predetermined size of the first light turning surface 210 is smaller than the second predetermined size of the second light turning surface 220, that is, In this modified embodiment, corresponding to the divergence angle, the size of the subsequent light turning surface is increased to ensure that the subsequent light turning surface can compensate for the influence of the divergence angle, and to ensure the periscope camera module 100 Image quality.

Example two

In order to further enhance the long-range shooting capability of the periscope camera module 100, the lens group 10 needs to be configured with a longer optical back focus. To match the longer optical back focus, the periscope camera module 100 needs to arrange a certain number of light turning elements between the first light turning element 21 and the second light turning element 22. That is to say, in the embodiment of the present application, in order to obtain a longer optical back focus, the light-reflecting component 20 further includes a device disposed between the first light-reflecting element 21 and the second light-reflecting element 22 At least one third light turning element 23 is shown in FIG. 5.

FIG. 5 illustrates a schematic diagram of an optical system of another periscope camera module 100 according to an embodiment of the present application. As shown in FIG. 5, the periscope camera module 100, along its photosensitive path, sequentially includes: a lens group 10, a first light-reflection element 21, a third light-reflection element 23, a second light-reflection element 22, and The photosensitive chip 30, wherein the imaging light is scattered to have a certain divergence angle after passing through the lens group 10; Group 10 imaging light; the third light-refractive element 23 corresponds to the first light-refractive element 21, used to divert the imaging light from the first light-refractive sub-element; the second light-refractive element 22 corresponds to The third light turning element 23 is used for turning the imaging light from the third light turning element 23 to the photosensitive chip 30.

Through the above-mentioned optical system design, the effective focal length of the periscope camera module 100 according to the embodiments of the present application can reach more than 15mm, and even can reach more than 20mm, for example, 15mm, 20mm, 25mm, 30mm, 35mm, etc.

More specifically, as shown in FIGS. 5 and 6, in the embodiment of the present application, the lens group 10 is disposed on the light incident surface of the periscope camera module 100 (or, the lens group The outer surface of 10 forms the light incident surface of the periscope camera module 100), and imaging light enters the periscope camera module 100 through the lens group 10. In particular, the imaging light will scatter at a certain angle after passing through the lens group 10, that is, it has a divergence angle α in the range of 0.05° to 5°. Although the scattering angle is small, because the optical back focus of the periscope camera module 100 is longer, that is, the optical path of the periscope camera module 100 is longer, the slight divergence will be continuously enlarged, and it may eventually become The imaging performance of the periscope camera module 100 is affected. That is, in the process of designing the first light refraction element 21, the third light refraction element 23, and the second light refraction element 22 that are arranged behind the lens group 10, it is necessary to consider the difference of the divergence angle Influence.

The first light refraction element 21 corresponds to the lens group 10. More specifically, the first light refraction element 21 has a first light refraction surface 210, wherein the imaging light from the lens group 10 A turning point close to 90° occurs at the first light turning surface 210. Considering that the imaging light will scatter to a certain extent when passing through the lens group 10, in order to ensure that the imaging light can be completely received by the first light-reflecting surface 210 of the first light-reflecting element 21 And reflecting, in the embodiment of the present application, the first light-reflecting surface 210 of the first light-reflecting element 21 is configured to have a first predetermined structure. More specifically, in the embodiment of the present application, the first preset structure configuration of the first light redirecting element 21 includes a preset distance between the first light redirecting surface 210 and the lens group 10 , And, the first light-reflecting surface 210 has a first preset size. Through the above configuration, it is ensured that the first light-reflecting surface 210 can completely receive and divert the imaging light from the lens group 10. It should be understood that the specific values of the preset distance and the first preset size are affected by the optical parameters of the lens group 10, and they are not determined values.

The third light-reflecting element 23 corresponds to the first light-reflecting element 21. More specifically, the third light-reflecting element 23 has a third light-reflecting surface 230, wherein, from the first light The imaging light of the turning element 21 undergoes a turn close to 90° on the third light turning surface 230. Considering that the imaging light is scattered, in order to ensure that the imaging light can be completely received and reflected by the third light-reflecting surface 230 of the third light-reflecting element 23, in the embodiment of the present application, the first The third light turning surface 230 of the three-light turning element 23 is configured to have a third predetermined structure. More specifically, in the embodiment of the present application, the third preset structure configuration includes a preset distance between the third light turning surface 230 and the first light turning surface 210, and the second A light-reflecting surface 210 has a third preset size. Through the above configuration, it is ensured that the third light-reflecting surface 230 can completely receive and divert the imaging light from the first light-reflecting element 21.

The second light turning element 22 corresponds to the third light turning element 23. More specifically, the second light turning element 22 has a second light turning surface 220 corresponding to the third light turning surface, wherein, The imaging light from the third light-reflecting element 23 is reflected close to 90° on the third light-reflecting surface 230. Considering that the imaging light is scattered, in order to ensure that the imaging light can be completely received and reflected by the second light-reflecting surface 220 of the second light-reflecting element 22, in the embodiment of the present application, the first The second light turning surface 220 of the two light turning element 22 is configured to have a second predetermined structure. More specifically, in the embodiment of the present application, the second preset structure configuration includes a preset distance between the second light turning surface 220 and the third light turning surface 230, and the first The second light-reflecting surface 220 has a second preset size. Through the above configuration, it is ensured that the second light-reflecting surface 220 can completely receive and divert the imaging light from the third light-reflecting element 23.

It is worth mentioning that those of ordinary skill in the art should know that in the camera module, there is a preset optical back focus between the lens group 10 and the photosensitive chip 30, that is, the last optical lens in the lens group 10 and the photosensitive chip 30 The distance between is a preset value. That is, in the embodiment of the present application, the distance a between the last optical lens of the lens group 10 and the first light-reflecting surface 210, the distance a between the first light-reflecting surface 210 and the third light-reflecting surface 210 The distance b between the turning surfaces 230, the distance c between the third light turning surface 230 and the second light turning surface 220, and the distance between the second light turning surface 220 and the photosensitive chip 30 The distance d of, the sum of the three is a preset value, that is, a+b+c+d=predetermined value.

In particular, in the embodiment of the present application, the shape and size of the first light turning element 21, the second light turning element 22, and the third light turning element 23 may be configured to be consistent, that is, the first light turning element 21, the second light turning element 22, and the third light turning element 23 The area sizes of a light turning surface 210, the second light turning surface 220, and the third light turning surface 230 are the same. Considering the divergence of the imaging light, it should be understood that the projection of the imaging light on the first light turning surface 210 accounts for a first proportion of the first light turning surface 210 which is smaller than that of the imaging light on the third light turning surface 210. The third ratio of the projection of the light turning surface 230 to the third light turning surface 230 is smaller than the second ratio of the projection of the imaging light on the second light turning surface 220 to the second light turning surface 220, such as Shown in Figure 7 and Figure 8. That is, the first distance between the projection edge of the imaging light on the first light turning surface 210 and the edge of the first light turning surface 210 is greater than that of the imaging light on the third light turning surface 230 The third distance between the projection edge of and the edge of the third light-reflecting surface 230 is greater than that between the projection edge of the imaging light on the second light-reflecting surface 220 and the edge of the second light-reflecting surface 220 The second distance is shown in Figure 7 and Figure 8.

In a specific example, the size of the first light turning surface 210, the second light turning surface 220, and the third light turning surface 230 are configured to be 7.7*5.5mm, and the periscope camera module The total back focus of 100 is 24.97mm, that is, the distance a between the last optical lens of the lens group 10 and the first light turning surface 210, the first light turning surface 210 and the third light turning surface 210 The distance b between the turning surfaces 230, the distance c between the third light turning surface 230 and the second light turning surface 220, and the distance between the second light turning surface 220 and the photosensitive chip 30 The distance d, the sum of the three is 24.97mm.

Of course, in specific implementation, the size configurations of the first light turning surface 210, the second light turning surface 220, and the third light turning surface 230 may also be different, and only the first light turning surface 210 is required. The second light-reflecting surface 220 and the third light-reflecting surface 230 can completely receive and reflect the imaging light. For example, in other examples of the embodiment of the present application, the first light-reflecting surface 210. The size of the second light turning surface 220 and the third light turning surface 230 may gradually increase, as shown in FIG. 9. For another example, in other examples of the embodiments of the present application, the dimensions of the first light turning surface 210, the second light turning surface 220, and the third light turning surface 230 may also be configured as: The size of a light turning surface 210 and the third light turning surface 230 are the same and smaller than the size of the second light turning surface 220. In this regard, this application is not limited.

It is worth mentioning that, in the periscope camera module 100 as shown in FIG. 5, the lens group 10 is located on the light incident surface of the periscope camera module 100, and directly receives imaging from the outside. Light, so that the periscope camera module 100 has a larger amount of light, and achieves the optical performance requirement of a large aperture. Specifically, in the embodiment of the present application, the lens group 10 includes at least two optical lenses. Preferably, the optical lens located on the outermost side and facing the outside is a glass lens, and the glass lens has a relatively high The refractive index can make the periscope camera module 100 have a higher light input. The material of the remaining optical lens is not limited by this application, and it can be made of glass lens or other materials. It is made, for example, a plastic lens. Considering the cost, weight, assembly and other factors of the optical lens, preferably, the remaining optical lens is a plastic lens. Through the position setting of the lens group 10 and the configuration of the optical lens, the aperture value of the periscope camera module 100 is less than F4.0, and can even reach less than F2.0, and the periscope camera module 100 The diameter of the diaphragm is greater than or equal to 5mm.

Since the lens group 10 is arranged on the light incident surface of the periscope camera module 100, such a setting position allows the lens group 10 to move in the direction of its set lens plane (wherein, the lens plane It is perpendicular to the central axis of the lens group 10), thereby providing a convenient implementation space for realizing optical image stabilization. Specifically, when assembling the periscope camera module 100 to a smart terminal device (for example, a smart phone) for shooting, the shooting is usually carried out by the user's hand, which is an inevitable problem for hand-held shooting It is the jitter problem. The user’s jitter will seriously affect the imaging effect of the module. Correspondingly, in the embodiment of the present application, a driving element may be configured for the lens group 10 to control the lens group 10 to fine-tune the position on its lens plane through the driving element to achieve the effect of optical anti-shake.

Moreover, in the embodiment of the present application, the first light-reflecting element 21 is arranged next to the lens group 10, and at the same time, no other optical element is arranged between the first light-reflecting element 21 and the lens group 10. Therefore, in the structural design of the periscope camera module 100, the lens group 10 and the first light turning element 21 are preferably configured as an integrated modular structure.

In a possible implementation manner, a first carrier may be provided for the first light-reflecting element 21 and the lens group 10, wherein the first carrier has a mounting groove and an upper surface recessedly formed therein , The first light turning element 21 is installed in the mounting groove, and the lens group 10 is configured on the upper surface of the first carrier, so as to structurally integrate the optical lens and the optical lens through the first carrier. The first light turning element 21 is such that the lens group 10 and the first light turning element 21 have an integrated modular structure. It is worth mentioning that the first light turning element 21 can also be mounted on the first carrier in other ways, which mainly depends on the nature of the first light turning element 21 itself, for example, when the first light turning element 21 When a light turning element 21 is implemented as a turning prism, it is a preferred embodiment to locate and install the first light turning element 21 through the mounting groove; and when the first light turning element 21 is implemented as a plane reflection When mirroring, the first light turning element 21 can be attached to the preset position of the first carrier by bonding, which is not limited by this application.

It is also worth mentioning that, in the periscope camera module 100 as shown in FIG. 5, it is also possible to realize automatic operation by moving the third light turning element 23 and the second light turning element 22. focusing. For example, moving the second light-reflection element 22 and the third light-reflection element 23 in a direction away from the first light-reflection element 21 can achieve close focus (ie, close-up shooting), close to the first light The turning element 21 moves the second light turning element 22 and the third light turning element 23 to achieve a far focus (ie, distant shooting). It should be understood that when the second light-refractive element 22 and the third light-refractive element 23 are moved, they will interact with the lens group 10, the first light-refractive element 21, and the photosensitive chip 30. The position changes at the same time, so that automatic focusing with two strokes can be realized in a double space, so as to improve the focusing efficiency and reduce the overall length of the periscope camera module 100.

In the process of moving the second light turning element 22 and the third light turning element 23 for focusing, preferably, the distance between the second light turning element 22 and the third light turning element 23 is The relative position relationship remains unchanged. In a possible implementation, the second light turning element 22 and the third light turning element 23 may be configured as an integrated modular structure.

For example, a second carrier may be configured for the second light turning element 22 and the third light turning element 23, wherein the second light turning element 22 and the third light turning element 23 are mounted on the The second carrier is such that the mutual positional relationship between the two is kept constant, thereby ensuring the stability of the entire optical system. At the same time, the second carrier is relatively movably mounted on the first carrier and The second carrier and the outer shell of the photosensitive chip 30 are used to realize automatic zooming.

Of course, the periscope camera module 100 according to the embodiment of the present application may also adopt other structural packaging solutions, which is not limited by this application.

In summary, the periscope camera module 100 based on Embodiment 2 of the present application is illustrated, wherein the light-reflecting element arranged behind the lens group 10 has a function for compensating for the divergence formed by the imaging light after passing through the lens group 10 The predetermined structural configuration of the corners ensures that the light-reflecting element can completely receive and divert the imaging light. In this way, the light-sensitivity of the photosensitive chip 30 of the periscope camera module 100 is increased to improve its imaging quality.

It is worth mentioning that although, in Embodiment 1 and Embodiment 2 of the present application, the light-reflection assembly 20 includes two light-reflection elements and three light-reflection elements as an example, it should be understood that other examples in this application In an example, the light turning component 20 may also include a larger number of light turning elements, and it is only necessary to consider the scattering phenomenon of imaging light when arranging the light turning elements.

Although, in Embodiment 1 and Embodiment 2 of the present application, the light-reflecting element included in the light-reflecting assembly 20 is only arranged between the lens group 10 and the photosensitive chip 30 as an example, it should be understood that In other examples of the present application, the light-reflecting component 20 may also include a light-reflecting element that is not disposed between the lens group 10 and the photosensitive chip 30, for example, in the periscope camera shown in FIG. 10A In the module 100, the light redirecting component 20 further includes a fourth light redirecting element 24 disposed in front of the lens group 10; for example, in the periscope camera module 100 as shown in FIG. 10B, The light redirecting component 20 further includes a fourth light redirecting element 24 disposed in front of the lens group 10, and the light redirecting component 20 further includes a first light redirecting element arranged between the lens group 10 and the photosensitive chip 30. A three-light turning element; another example, in the periscope camera module 100 as shown in FIG. 10C, the light turning component 20 further includes a fourth light turning element 24 disposed in front of the lens group 10, Moreover, the light redirecting component 20 further includes a third light redirecting element 23 and a fifth light redirecting element 25 arranged between the lens group 10 and the photosensitive chip 30, which is not limited by this application. .

Further, according to the periscope camera module 100 according to the embodiment of the present application, the effective focal length can reach 15mm to 25mm through multiple optical path turning designs. Now suppose that the equivalent focal length of the periscope camera module 100 is P, the effective focal length is F, the diagonal length of the camera standard chip is 43.27mm, and the diagonal length of the photosensitive chip 30 is L, P= F*43.27/L, that is, P*L=F*43.27. Through calculation, we can get the effective focal length of the periscope camera module 100 P=24*43.27/5.238≈198.26mm, that is, if The periscope camera module 100 is further equipped with at least one second camera module 90, which has a wide-angle lens to form a multi-camera camera module 110, as shown in FIG. 11, for example, the equivalent focal length P2 of the wide-angle lens It is 19.5mm, P/P2≈10, which can achieve 10x optical zoom, and if the equivalent focal length P2 of the wide-angle lens is 33mm, P/P2≈6, it can achieve 6x optical zoom.

In the application of the periscope camera module 100, for example, the periscope camera module 100 is assembled on an electronic device 200, as shown in FIG. 12, a wide-angle model with P/P2≥6 can be selected. It can be used in the electronic device 200 to realize the multi-camera camera module greater than 6x optical zoom, and even 10x optical zoom and above. Of course, in other application scenarios, a larger number of upper and lower modules can be equipped. Assume that P is the equivalent focal length of the periscope camera module 100, P2 is the equivalent focal length of the wide-angle module, and P3 is the medium focal length. The equivalent focal length of the module, P/P2≈10, P3/P2≈5, realizes a smooth optical zoom of more than 5 times, which is not limited by this application.

Of course, the periscope camera module 100 can also be separately applied to a terminal device, such as a smart phone, as shown in Fig. 13, as the rear camera module of the smart phone for shooting.

Those skilled in the art should understand that the above description and the embodiments of the present invention shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been completely and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any deformation or modification.

Claims

A periscope camera module, which is characterized in that it comprises:

Lens group, the imaging light passing through the lens group forms a certain divergence angle;

A photosensitive chip for receiving the imaging light for imaging; and

A light-reflection assembly arranged on the photosensitive path of the photosensitive chip, the light-reflection assembly comprising a first light-reflection element and a second light-reflection element; the first light-reflection element has a first light-reflection element corresponding to the lens group A light turning surface for turning the imaging light from the lens group, wherein the first light turning surface has a first preset structure configuration for compensating the divergence angle;

The second light-reflecting element corresponds to the photosensitive chip, and the second light-reflecting element has a second light-reflecting surface for turning the imaging light to the photosensitive chip, wherein the second light-reflecting mask There is a second preset structure configuration for compensating the divergence angle.
The periscope camera module according to claim 1, wherein the first preset structure configuration includes a preset distance between the first light turning surface and the lens group, and the first A light turning surface has a first preset size.
3. The periscope camera module according to claim 2, wherein the second preset structure configuration includes the second light turning surface having a second preset size.
The periscope camera module according to claim 3, wherein the projection of the imaging light on the first light-reflecting surface accounts for a first proportion of the first light-reflecting surface which is smaller than that of the imaging light on the first light-reflecting surface. The projection of the second light turning surface accounts for a second proportion of the second light turning surface.
The periscope camera module according to claim 4, wherein the first distance between the projection edge of the imaging light on the first light turning surface and the edge of the first light turning surface is greater than the The second distance between the projection edge of the imaging light on the second light turning surface and the edge of the second light turning surface.
5. The periscope camera module of claim 5, wherein the first predetermined size is equal to the second predetermined size.
5. The periscope camera module of claim 5, wherein the first predetermined size is smaller than the second predetermined size.
The periscope camera module according to claim 1, wherein the lens group is disposed on a light incident surface of the periscope camera module.
8. The periscope camera module according to claim 8, wherein the angle between the first light turning surface and the optical axis set by the lens group is 45°.
9. The periscope camera module according to claim 9, wherein the angle between the second light turning surface and the photosensitive axis set by the photosensitive chip is 45°.
10. The periscope camera module of claim 10, wherein the effective focal length of the periscope camera module ranges from 15 mm to 25 mm.
11. The periscope camera module of claim 10, wherein the aperture value of the periscope camera module is less than F4.0.
The periscope camera module according to claim 1, wherein the light-reflection component further comprises at least one third light-reflection element disposed between the first light-reflection element and the second light-reflection element .
8. The periscope camera module according to claim 7, wherein the light-reflection component further comprises at least one third light-reflection element disposed between the first light-reflection element and the second light-reflection element .
15. The periscope camera module of claim 14, wherein the size of the third light turning surface of the third light turning element is larger than the first predetermined size and smaller than the second predetermined size.
4. The periscope camera module according to claim 1, wherein the light reflex component further comprises a fourth light reflex element for receiving the imaging light from the outside and turning the imaging light to the lens group.
A multi-camera camera module, characterized in that it comprises:

The periscope camera module according to any one of claims 1-16; and

The second camera module, wherein the ratio of the equivalent focal length of the periscope camera module to the equivalent focal length of the second camera module is greater than or equal to 6.
The multi-camera camera module of claim 17, wherein the ratio of the equivalent focal length of the periscope camera module to the equivalent focal length of the second camera module is greater than or equal to 10.
An electronic device, characterized in that it comprises:

The main body of the electronic equipment; and

The multi-camera camera module assembled in the main body of the electronic device, wherein the multi-camera camera module includes:

The periscope camera module according to any one of claims 1-16; and

The second camera module, wherein the ratio of the equivalent focal length of the periscope camera module to the equivalent focal length of the second camera module is greater than or equal to 6.
An electronic device, characterized by comprising the periscope camera module according to any one of claims 1-16.