CN112204939A

CN112204939A - Camera unit with light steering mechanism and application thereof

Info

Publication number: CN112204939A
Application number: CN201980035962.1A
Authority: CN
Inventors: 王明珠; 方银丽; 姚立锋; 季昂; 吴雨榕
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2018-06-12
Filing date: 2019-06-06
Publication date: 2021-01-08
Anticipated expiration: 2039-06-06
Also published as: CN110602352A; CN112204939B

Abstract

The invention provides a camera unit with a light steering mechanism and application thereof, wherein the camera unit comprises a long-focus camera module and a wide-angle camera module, wherein the wide-angle camera module provides a wide-angle image, the ratio of the equivalent focal length of the long-focus camera module to the equivalent focal length of the wide-angle camera module is not less than 4, the long-focus camera module comprises a light steering mechanism, a long-focus lens and a long-focus photosensitive component, the light steering mechanism is used for steering the light to penetrate through the long-focus lens to be received by the long-focus photosensitive component, and the height size of the long-focus camera module is not more than 5.6 mm.

Description

Camera unit with light steering mechanism and application thereof

Technical Field

The invention relates to the field of zooming of double camera modules, in particular to a camera unit with a light steering mechanism and application thereof.

Background

At present, the zooming of the double camera modules depends on the difference of the physical focal lengths of a wide-angle lens and a telephoto lens to realize the wide-angle or telephoto shooting effect.

Since the height of the telephoto lens is higher than that of the wide-angle lens, there is a height difference therebetween, and when a higher zoom magnification is required, the height of the telephoto lens is designed to be higher so that the ratio between the focal length of the telephoto lens and the focal length of the wide-angle lens is larger. This poses a problem in assembly, especially in today's pursuit of slimness of electronic devices.

To solve this problem, some manufacturers design the camera module with a telephoto lens as a periscopic camera module with a light steering mechanism, so that the light is turned by 90 degrees and then passes through an optical lens to be received by a photosensitive element for imaging. The light sensing element, the optical lens and the light steering element are arranged along the width direction of the electronic equipment, and light rays which are reflected by an object and are perpendicular to the width direction of the electronic equipment are turned by 90 degrees by the light steering element and then pass through the optical lens along the width direction of the electronic equipment to be received by the light sensing element to form an image.

However, with the increase of the demand for zoom magnification, the focal length of the periscopic camera module with the telephoto lens needs to be increased, and accordingly, the size of the telephoto lens needs to be increased, so how to increase the focal length of the telephoto lens on the premise of ensuring that the size of the periscopic camera module with the telephoto lens is not increased or even optimized is an urgent problem to be solved.

Disclosure of Invention

An object of the present invention is to provide a camera unit with a light redirecting mechanism and applications thereof, wherein the camera unit comprises at least a wide camera module and a tele camera module with a light redirecting mechanism, wherein the size of the tele camera module can be effectively reduced, so that the camera unit is particularly suitable for being applied to electronic devices which seek to be slimmed down.

Another object of the present invention is to provide an image pickup unit with a light redirecting mechanism and applications thereof, wherein the height dimension of the tele image pickup module can be effectively reduced, so that the image pickup unit is particularly suitable for being applied to electronic devices that seek to be slimmed down.

Another objective of the present invention is to provide a camera unit with a light steering mechanism and an application thereof, wherein the height of the telephoto camera module of the dual camera modules is reduced, and the zoom magnification of the whole camera unit is ensured, so as to have a better zoom capability while being suitable for a light and thin electronic device.

It is another object of the present invention to provide a camera unit with a light redirecting mechanism and applications thereof, wherein the height of the tele camera module and the wide camera module respectively does not exceed 5.6mm, and the zoom magnification of the tele camera module and the wide camera module is not less than 4 times.

Another objective of the present invention is to provide a camera unit with a light steering mechanism and applications thereof, wherein the telephoto camera module provides a telephoto lens, a light steering mechanism and a photosensitive component, and the light steering mechanism can steer light to pass through the telephoto lens to be received by the telephoto photosensitive component for imaging.

Another object of the present invention is to provide an image pickup unit with a light redirecting mechanism and its application, in which the height dimension of the tele photosensitive assembly can be effectively reduced by reducing the number of a photosensitive unit of the photosensitive member.

Another objective of the present invention is to provide a camera unit with a light turning mechanism and its application, wherein the long-focus photosensitive assembly provides a base, a photosensitive element and a circuit board, wherein the base is integrally formed on the photosensitive element and the circuit board to effectively reduce the height dimension of the long-focus photosensitive assembly.

It is another object of the present invention to provide an image pickup unit with a light redirecting mechanism and its application, in which the telephoto lens height dimension can be effectively reduced by reducing the diameter of the lens.

It is another object of the present invention to provide an imaging unit with a light redirecting mechanism and its use, wherein the light redirecting mechanism provides a prism of resin material that facilitates a reduction in the size of the tele imaging module by a lightweight design of the prism.

Another object of the present invention is to provide a camera unit with a light redirecting mechanism and its application, wherein the camera unit is designed with a smaller size and the light sensing performance of the telephoto camera module can be enhanced.

According to an aspect of the present invention, there is provided an image pickup unit with a light redirecting mechanism, comprising:

the telephoto imaging module comprises a light steering mechanism, a telephoto lens and a telephoto photosensitive assembly, wherein the light steering mechanism is used for steering the light rays to penetrate through the telephoto lens to be received by the telephoto photosensitive assembly, the height of the telephoto imaging module is not more than 5.6mm, the first surface of the telephoto lens has a first height h, the diagonal length of a photosensitive area of a photosensitive element of the telephoto photosensitive assembly is L, and h and L satisfy the following conditions:

h/L≥0.8。

according to an embodiment of the present invention, a ratio between an equivalent focal length of the telephoto imaging module and an equivalent focal length of the wide-angle imaging module is not less than 5.

According to an embodiment of the present invention, h and L respectively satisfy the following conditions:

5.1mm≥h≥4.7mm，L≤5.5mm。

according to an embodiment of the present invention, the equivalent focal length range of the telephoto camera module is 80mm to 160mm, and the equivalent focal length range of the wide-angle camera module is 20mm to 40 mm.

According to an embodiment of the invention, the height dimension of the camera unit does not exceed 5.6 mm.

According to an embodiment of the present invention, the light sensing element includes a plurality of light sensing units, and light is received by the light sensing units after passing through the telephoto lens, wherein a size a of a single light sensing unit is greater than or equal to 1.2 μm, and an aperture diameter D of the telephoto lens satisfies the following condition:

3.76mm≤D≤5.3mm。

according to an embodiment of the present invention, the long focus photosensitive assembly further includes a base and a circuit board, wherein the base is integrally formed on the photosensitive element and the circuit board.

According to an embodiment of the present invention, the circuit board includes a substrate and a plurality of electronic components, wherein the electronic components are disposed in a Y-axis direction of the substrate.

According to an embodiment of the present invention, the light turning mechanism has an incident surface, a reflecting surface and an exit surface, wherein the incident surface is for light to enter, the reflecting surface reflects the light and then enters the telephoto lens through the exit surface, and an included angle between the reflecting surface and the exit surface is not more than 45 °.

According to an embodiment of the present invention, the light redirecting mechanism includes a prism, wherein the prism is made of a resin material.

According to an embodiment of the present invention, the telephoto lens includes a light transmissive element group and a support member, wherein the light transmissive element group is accommodated in the support member, and a radial dimension of the support member in a Z-axis direction is lower than a radial dimension of the support member in a Y-axis direction.

According to an embodiment of the present invention, the telephoto lens includes a light transmissive element group and a support member, wherein the light transmissive element group is supported by the support member, and the light transmissive element group is exposed outside the support member in a Z-axis direction.

According to another aspect of the present invention, there is provided a mobile electronic device comprising:

an electronic device body and a camera unit according to any of the preceding claims, wherein the camera unit is communicably connected to the electronic device body.

According to an embodiment of the present invention, the electronic device body includes a processing unit and a display unit, wherein the processing unit is communicably connected to the display unit, and the image pickup unit is operatively connected to the processing unit.

According to another aspect of the present invention, there is provided an image pickup unit with a light redirecting mechanism, comprising:

the telephoto imaging system comprises a telephoto imaging module and a wide-angle imaging module, wherein the wide-angle imaging module provides a wide-angle image, a ratio between an equivalent focal length of the telephoto imaging module and an equivalent focal length of the wide-angle imaging module is not less than 4, the telephoto imaging module comprises a light steering mechanism, a telephoto lens and a telephoto photosensitive assembly, the light steering mechanism is used for steering the light to transmit through the telephoto lens to be received by the telephoto photosensitive assembly for imaging, the height of the telephoto imaging module is not more than 5.6mm, a size of a photosensitive unit of a photosensitive element of the telephoto photosensitive assembly is A, a diameter of an aperture of the telephoto lens is D, and A and D satisfy the following conditions:

the product of A and D has a value of 4.4 or more, wherein A is in μm and D is in mm.

5.1mm≥h≥4.7mm，L≤5.5mm。

According to an embodiment of the present invention, the light sensing element includes a plurality of light sensing units, and light is received by the light sensing units after passing through the telephoto lens, wherein a size a of a single light sensing unit is greater than or equal to 1.2 μm, and a diameter D of the aperture satisfies a condition: d is more than or equal to 3.76mm and less than or equal to 5.3 mm.

According to another aspect of the present invention, there is provided a method of manufacturing an image pickup unit, including the steps of:

providing a long-focus camera module and a wide-angle camera module with the height not more than 5.6mm, wherein the ratio of the equivalent focal lengths of the long-focus camera module and the wide-angle camera module is not less than 4; and

and assembling the long-focus camera module and the wide-angle camera module to form a camera unit.

According to an embodiment of the present invention, in the above method, the tele camera module includes a light steering mechanism, a tele lens and a tele photosensitive assembly, wherein the light steering mechanism is configured to steer the light beam to pass through the tele lens to be received by the tele photosensitive assembly for imaging, wherein a first surface of the tele lens has a first height h, a length of a diagonal of a photosensitive area of a photosensitive element of the tele photosensitive assembly is L, and h and L satisfy the following conditions:

h/L≥0.8。

according to an embodiment of the present invention, in the method, the tele camera module includes a light steering mechanism, a tele lens and a tele photosensitive assembly, wherein the light steering mechanism is configured to steer the light beam to pass through the tele lens to be received by the tele photosensitive assembly for imaging, and wherein a height of the tele camera module is not more than 5.6mm, a size of a photosensitive unit of a photosensitive element of the tele photosensitive assembly is a, a diameter of an aperture of the tele lens is D, and a and D satisfy the following conditions:

Drawings

Fig. 1 is a perspective view of an electronic device according to a preferred embodiment of the invention.

Fig. 2 is a perspective view of a camera unit according to a preferred embodiment of the invention.

Fig. 3 is a schematic cross-sectional view of an image pickup unit according to a preferred embodiment of the present invention.

Fig. 4A is a schematic diagram of a tele camera module according to a preferred embodiment of the invention.

Fig. 4B is a cross-sectional view of a tele camera module according to a preferred embodiment of the invention.

FIG. 4C is a diagram of a photosensitive element according to a preferred embodiment of the invention.

FIG. 5A is a schematic diagram of a tele photosensitive assembly according to a preferred embodiment of the invention.

FIG. 5B is a schematic diagram of a tele photosensitive assembly according to a preferred embodiment of the invention.

FIG. 5C is a schematic diagram of a tele photosensitive assembly according to a preferred embodiment of the invention.

Fig. 6A is a schematic diagram of a tele camera module according to a preferred embodiment of the invention.

Fig. 6B is a schematic diagram of a tele camera module according to a preferred embodiment of the invention.

FIG. 7 is a diagram of a tele camera module according to a preferred embodiment of the invention.

FIG. 8A is a schematic diagram of a tele photosensitive assembly according to a preferred embodiment of the invention.

FIG. 8B is a schematic diagram of a tele photosensitive assembly according to a preferred embodiment of the invention.

FIG. 8C is a schematic diagram of a tele photosensitive assembly according to a preferred embodiment of the invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 5A and 5B and 5C, an image capturing unit 1 and an electronic device 100 using the image capturing unit 1 according to a preferred embodiment of the present invention are illustrated.

Electronic equipment 100 includes an electronic equipment body 1000 and a camera unit 1, wherein camera unit 1 is set up in electronic equipment body 1000 for acquire the image of being shot the object, wherein camera unit 1 includes a wide angle module of making a video recording 10 and a long burnt module of making a video recording 20, wherein wide angle module of making a video recording 10 with long burnt module of making a video recording 20 can cooperate the work in order to utilize wide angle module of making a video recording 10 with the difference of long burnt module of making a video recording 20 physical focal length realizes "wide angle" or is the shooting effect of "long burnt". An equivalent focal length of the telephoto camera module 20 is greater than an equivalent focal length of the wide-angle camera module 10.

The electronic device body 1000 includes a processing unit 2 and a display unit 3, wherein the processing unit 2 is communicably connected to the display unit 3, and the image pickup unit 1 is operatively connected to the processing unit 2.

The processing unit 2 is electrically connected to the display unit 3 and the processing unit 2 is operatively connected to the camera unit 1. The processing unit 2 is pre-stored with software algorithms to precisely control the wide camera module 10 and the tele camera module 20 of the camera unit 1. Preferably, the display unit 3 is a touch display screen, and a user can directly interact with the camera unit 1 through the display unit 3, namely, control the operation of the camera unit 1. The image information of the object acquired by the imaging unit 1 can be directly displayed on the display unit 3.

It should be noted that the optical zooming of the camera unit 1 does not need to change the focal lengths of the wide camera module 10 and the telephoto camera module 20, but uses the wide camera module 10 and the telephoto camera module 20 to obtain different information of the object, and the two cooperate with each other, so that the zooming of the camera unit 1 as a whole is realized through the switching of the wide camera module 10 and the telephoto camera module 20 and the software algorithm stored in the processing unit 2 in the process of shooting the object, which means that no moving space needs to be reserved inside the camera unit 1, and thus the size of the camera unit 1 itself can be small.

The wide-angle camera module 10 includes a wide-angle lens and the wide-angle lens has a central axis, the telephoto camera module 20 includes a light steering mechanism 21, a telephoto lens 22 and a telephoto photosensitive component 23, wherein the light steering mechanism 21 can steer light from an object or a subject to pass through the telephoto lens 22 to be received by the telephoto photosensitive component 23 for photoelectric conversion.

The present embodiment provides a smaller size of the camera unit 1, so that the camera unit 1 is suitable for a lighter and thinner electronic device 100, such as a mobile phone, and the size of the camera unit 1 is suitable for the electronic device body 1000. Preferably, the image pickup unit 1 does not protrude from the electronic apparatus body 1000, so that the whole electronic apparatus 100 is more beautiful. That is, the camera unit 1 is designed to have a small height H, where the height of the camera unit 1 refers to the extension height of the camera unit 1 in the Z-axis direction in the drawing.

In the wide camera module 10 and the telephoto camera module 20, the telephoto camera module 20 makes a larger contribution to the whole height of the camera unit 1 than the wide camera module 10, in other words, the height of the telephoto camera module 20 limits the whole development of the camera unit 1 to a small size.

The sizes, especially the height sizes, of the light steering mechanism 21, the telephoto lens 22, and the telephoto photosensitive component 23 of the telephoto camera module 20 respectively limit the reduction of the height size of the entire telephoto camera module 20.

Disclosed herein is a telephoto camera module 20, and each component of the telephoto camera module 20 is designed with a smaller size so that the entire telephoto camera module 20 has a smaller height, and it is worth mentioning that the camera unit 1 can ensure that the telephoto camera module 20 and the telephoto camera module 20 have a larger zoom ratio while ensuring that the height of the telephoto camera module 20 is reduced, so that the camera unit 1 has a more prominent zoom performance at the same time.

Specifically, in this example, referring to fig. 4A and 4C, the tele photosensitive assembly 23 of the tele camera module 20 is designed with a smaller height dimension W2 from the original height dimension, the tele photosensitive assembly 23 includes a base 231, a photosensitive element 232 and a circuit board 233, wherein the photosensitive element 232 is attached to the circuit board 233, the base 231 has an optical window 2310, and one end of the base 231 is connected to the tele lens 22 and the other end is connected to the circuit board 233. The light reaches the photosensitive element 232 after passing through the light window 2310 to be received so that the user can observe image information of the photographed object on the display unit 3.

The photosensitive element 232 plays an important role in limiting the size of the tele photosensitive assembly 23. In this example, the size of the photosensitive element 232 can be reduced, so that the size, especially the height, of the tele photosensitive assembly 23 is reduced to the original height H2 to H2'.

Specifically, the photosensitive element 232 includes a plurality of photosensitive units 2321, and in this example, the size of the photosensitive element 232 is reduced by reducing the number of the photosensitive units 2321. Obviously, for the photosensitive units 2321 with the same specification, the area occupied by 1300 tens of thousands of photosensitive units 2321 is much larger than the area occupied by 800 tens of thousands of photosensitive units 2321, and the size of the photosensitive element 232 can be greatly reduced by reducing the number of the photosensitive units 2321. Further, as the size of the photosensitive element 232 is reduced, the corresponding telephoto lens 22 may be designed to have a smaller size H1' from the original height size H1. In this way, the size of the telephoto lens 22 is reduced at the same time. Furthermore, corresponding to the reduction of the size of the telephoto lens 22, the size of the light-diverting mechanism 21 can be reduced, so that the size, especially the height, of the entire telephoto camera module 20 is reduced, and the camera unit 1 is more suitable for a slimmer electronic device 100.

It should be noted that, while the size of the telephoto lens 22 is reduced, the light entering amount of the telephoto camera module 20 may be reduced, and the light entering amount of the telephoto lens 22 itself is smaller, which may cause the final imaging effect to be poor, and in order to ensure a good imaging effect, the size of the single photosensitive unit 2321 may be increased while the size of the whole photosensitive element 232 is reduced, so that the photosensitive area of the unit pixel is increased, thereby increasing the overall light entering amount, so that the photosensitive element 232 still maintains a good photosensitive performance by increasing the size of the single photosensitive unit 2321 after the number of the photosensitive units 2321 is reduced, and even in some examples of the present invention, the photosensitive performance of the telephoto camera module 20 using the single photosensitive unit 2321 with a larger size, the size of the photosensitive element 232 is smaller, and the number of the photosensitive units 2321 is smaller, is even better than that of the photosensitive unit 20 using the single photosensitive unit with a smaller size 2321 and the telephoto imaging module 20 with the smaller size of the photosensitive element 232 but the larger number of the photosensitive units 2321.

For photosensitive properties (size of photosensitive unit 2321/F.No)²This parameter is measured.

Referring to FIG. 4C, it can be understood by those skilled in the art that the illustration is only a schematic diagram of the photosensitive units 2321 of the photosensitive element 232, and in fact, the size of a single photosensitive unit 2321 is very small. By reducing the number of the photosensitive units 2321 and increasing the size of the single photosensitive unit 2321, the photosensitive performance of the photosensitive element 232 is not reduced while the size of the entire photosensitive element 232 is reduced. In one example of the present invention, after the number of the photosensitive cells 2321 of the photosensitive element 232 is changed from 13,000,000 to 8000,000, the size of the photosensitive cells 2321 is increased at the same time, but the measurement of the amount of incident light- (the size of the photosensitive cells 2321/F.No.)²Is increased to ensure the working efficiency of the photosensitive element 232 while reducing the overall size of the photosensitive element 232.

In order to further reduce the height dimension of the tele camera module 20, the size of the tele photosensitive assembly 23 may also be reduced on the basis of the size of the photosensitive element 232 having been reduced.

Referring to fig. 5A, the tele photosensitive assembly 23 includes a base 231, a photosensitive element 232 and a circuit board 233, wherein the photosensitive element 232 is disposed on the circuit board 233, and the base 231 is formed around the photosensitive element 232 and supported on the circuit board 233. The circuit board 233 includes a substrate 2331 and a plurality of electronic components 2332, wherein the electronic components 2332 are formed on the substrate 2331 by SMT process mounting or the like. The types of electronic components 2332 include, but are not limited to, resistors, capacitors, driver devices, and the like.

The base 231 includes an annular base body 2311 and has an optical window 2310 in the middle to provide an optical path for the telephoto lens 22 and the photosensitive element 232. The light sensing element 232 is operably connected to the circuit board 233, such as by cob (chip On board) wire bonding the light sensing element 232 to the circuit board 233 and On the top side of the circuit board 233. The light sensing element 232 and the telephoto lens 22 are respectively assembled on two sides of the base 231 and are arranged in optical alignment, so that light passing through the telephoto lens 22 can reach the light sensing element 232 through the light window 2310, and the telephoto camera module 20 can provide an optical image after photoelectric conversion.

The tele camera module 20 may further include a driver, such as a voice coil motor, a piezoelectric motor, etc., that is, the tele camera module 20 may be a moving-focus camera module, the tele lens 22 is mounted to the driver, and the base 231 may be used to support the driver. The telephoto camera module 20 may further include a filter element for filtering light passing through the lens, such as an infrared cut filter, and the filter element may be disposed on a top side of the base 231, or an end of the base 231 near the telephoto lens 22. It will be understood by those skilled in the art that the telephoto lens 22 may be directly mounted to the base 231 of the telephoto photosensitive component 23 without the driver, that is, forming a certain focus module. The type of tele camera module 20 is not a limitation of the present invention.

The sizes of the base 231 and the circuit board 233 make a limit to the reduction in the height dimension of the tele photosensitive assembly 23 on the basis of the reduction in the size of the photosensitive element 232. However, one of the factors determining the size of the base 231 is the distance between the base 231 and the photosensitive element 232, and the larger the distance between the base 231 and the photosensitive element 232, the larger the size of the base 231 required, and the correspondingly larger the size of the circuit board 233 for supporting the base 231. The height of the tele photosensitive assembly 20 in the Z-axis direction can be further reduced by reducing the size of the base 231 and the photosensitive element 232.

Referring to fig. 5B, which is a modified embodiment of the tele photosensitive assembly 23 according to the above embodiment, in this embodiment, the base 231 is integrally formed on a non-photosensitive area around the circuit board 233 and the photosensitive element 232 by a molding process. In this way, the gap between the base 231 and the photosensitive element 232 is reduced, so that the height dimension of the base 231 is reduced, and the required height dimension of the circuit board 233 is also reduced, which is more favorable for reducing the height dimension of the whole tele photosensitive assembly 23. The base 231 includes an annular base body 2311 and has an optical window 2310 in the middle to provide an optical path for the telephoto lens 22 and the photosensitive element 232.

The base 231 is integrally formed with the photosensitive element 232 and the circuit board 233, so that the base 231 can replace a lens holder or a bracket of a conventional camera module and does not need to be attached to the circuit board 233 by glue.

Another factor that affects the height dimension of the tele photosensitive assembly 23 is the dimension of the circuit board 233 in the Z-axis direction.

The substrate 2331 needs to provide a mounting space or a receiving space for the electronic components 2332, and the position of the electronic components 2332 may limit the reduction in size of the substrate 2331.

The substrate 2331 has a front surface and a back surface, wherein the front surface of the substrate 2331 faces the light-sensing elements 232, and the back surface of the substrate 2331 faces away from the light-sensing elements 232. The electronic components 2332 are disposed on the front surface, and the electronic components 2332 are mainly disposed on a Y-axis direction of the substrate 2331, and the electronic components 2332 are not disposed or are less disposed in the Z-axis direction, and the substrate 2331 extends toward the Z-axis direction and the Y-axis direction, respectively, so that the substrate 2331 does not need to reserve mounting positions for the electronic components 2332 in the Z-axis direction, thereby reducing the height of the base 231 in the Z-axis direction. In some examples of the invention, the electronic components 2332 are embedded in the substrate 2331, and the electronic components 2332 are mainly disposed in a Y-axis direction of the substrate 2331, and the electronic components 2332 are not disposed or are less disposed in the Z-axis direction, and the substrate 2331 extends toward the Z-axis direction and the Y-axis direction respectively, so that the substrate 2331 does not need to reserve mounting positions for the electronic components 2332 in the Z-axis direction, thereby reducing the height of the pedestal 231 in the Z-axis direction. In other examples of the present invention, the electronic devices 2332 are disposed on the back side of the substrate 2331 to reduce the space occupied by the electronic devices 2332 in the Z-axis direction with respect to the substrate 2331, thereby providing the substrate 2331 with the possibility of reducing the height in the Z-axis direction.

Referring to fig. 5C, a modified embodiment of the tele photosensitive assembly 23 according to the invention is shown, wherein the tele photosensitive assembly 23 comprises a base 231, a photosensitive element 232 and a circuit board 233, wherein the base 231 is integrally formed on the photosensitive element 232 and the circuit board 233 by a molding process.

The base 231 includes an annular base body 2311 and an optical window 2310 to provide an optical path for the telephoto lens 22 and the photosensitive element 232.

Further, the circuit board 233 includes a substrate 2331 and a plurality of electronic components 2332, wherein the substrate 2331 is a flexible substrate 2331, and the substrate 2331 includes a folding portion 23311 and an unfolded portion 23312, wherein the folding portion 23311 is located at two sides of the unfolded portion 23312 and integrally extends to the unfolded portion 23312. The folded portion 23311 is configured to extend from an end of the unfolded portion 23312 toward the base 231. That is, the folded portion 23311 of the substrate 2331 is completely wrapped around the base 231.

The electronic component 2332 may be disposed on the folding portion 23311 of the substrate 2331, for example, directly on the surface of the folding portion 23311 or embedded in the folding portion 23311. The electronic component 2332 may be disposed on the unfolded part 23312 of the substrate 2331, or the electronic component 2332 may be disposed on the folded part 23311 and the unfolded part 23312 of the substrate 2331, respectively.

In this way, the height of the circuit board 233 in the Z-axis direction is reduced because a portion of the circuit board 233 in the Z-axis direction is accommodated in the base 231 in such a manner as to extend in the X-axis direction, thereby reducing the height dimension of the circuit board 233 in the Z-axis direction.

Further, with continued reference to fig. 4A and 4B, after the size of the tele photosensitive assembly 23 is reduced, the size of the tele lens 22 matching the tele photosensitive assembly 23 can also be designed to be smaller.

Specifically, the telephoto lens 22 includes a light transmissive element group 221, wherein the light transmissive element group 221 includes a plurality of light transmissive elements, and wherein the light transmissive elements are located in an optical path of the telephoto lens to transmit light from the light diverting mechanism. The light transmissive element group 221 includes a plurality of light transmissive elements, one of which receives light from the light redirecting mechanism 21 first, and is referred to as a first light transmissive element 2211.

Further, the telephoto lens 22 includes a support member 222, wherein the light transmissive element group 221 is supported by the support member 222, so that each of the light transmissive elements is stably maintained in the same optical path. While the size of the light-transmitting element group 221 is reduced, the thickness of the support 222 in the Z-axis direction limits the reduction in the height size of the telephoto lens 22.

In some examples of the present invention, the supporting member 222 is designed as an annular cylindrical supporting member 222, the light passes through the light-transmitting element group 221 located on the supporting member 222 in the X-axis direction, and the height dimension of the supporting member 222 in the Z-axis direction is designed to be smaller than the height dimension in the Y-axis direction, or the radial dimension of the supporting member 222 in the Z-axis direction is designed to be smaller than the radial dimension in the Y-axis direction. That is, the height dimension of the support 222 in the Z-axis direction is reduced. For example, as shown in fig. 4B, the height dimension of the entire telephoto lens 22 in the Z-axis direction is also reduced by controlling the thickness of the support member 222 in the Z-axis direction. The thickness of the support 222 in the Z-axis direction may be controlled by cutting the support 222 or by controlling the thickness of the support 222 in the Z-axis direction during the manufacturing process.

In some examples of the present invention, the light transmissive element group 221 is supported by the support 222, and the light transmissive element group 221 is exposed outside the support 222 in the Z-axis direction. More specifically, the light-transmitting element group 221 has a first side, a second side, a third side and a fourth side, wherein when the telephoto camera module 20 is installed on the electronic device body, the third side is closer to the electronic device body 1000 than the first side, a direction of the first side toward the third side is a Z-axis direction, and a direction of the second side toward the fourth side is a Y-axis direction, wherein the first side and the third side are oppositely disposed, and the second side and the fourth side are oppositely disposed, wherein the first side and the third side are exposed outside the supporting member 222, that is, at this time, a height dimension of the supporting member 222 in the Z-axis direction is lower than a height dimension in the Y-axis direction. In other words, at the first side and the third side, the light-transmitting element group 221 is at least partially not wrapped by the support member 222, and the height dimension of the telephoto lens 22 in the Z-axis direction can be set lower than the height dimension in the Y-axis direction with respect to the second side and the fourth side that are completely wrapped.

Further, with reference to fig. 4A, the light turning mechanism 21 has an incident surface 211, a reflecting surface 212 and an exit surface 213, the light from the object to be photographed firstly enters the incident surface 211, then is reflected by the reflecting surface 212 to change the propagation direction, and leaves the light turning mechanism 21 from the exit surface 213, the incident surface 211 and the exit surface 213 are perpendicular to each other, in this example, a small angle is designed between the reflecting surface 212 and the exit surface 213, the included angle between the reflecting surface 212 and the exit surface 213 is not more than 45 °, and the smaller the included angle between the reflecting surface 212 and the exit surface 213 is, the more beneficial to reducing the size of the telephoto imaging module 20 is. It will be appreciated that the smaller the angle between the reflecting surface 212 and the exit surface 213, the shorter the length of the entrance surface 211 and thus the smaller the size of the light redirecting mechanism 21. It should be noted that the light diverting mechanism 21 includes a light diverting element 214 and a diverting base 215, wherein the light diverting element 214 is drivably disposed on the diverting base 215, and the size of the diverting base 215 can be reduced while the size of the light diverting element 214 is reduced.

It is worth mentioning that in this example, the light diverting element 214 is a prism, which can be made of resin material with a smaller weight, so that the light diverting element 214 has a smaller weight, and the diverting base 215 that cooperates to drive the light diverting element 214 can also be designed with a smaller size. In some examples of the invention, the prism may also be made of a glass material.

In other words, by dimensioning the various components of the tele camera module 20, and ultimately the tele camera module 20, to have a smaller height dimension while ensuring a high zoom magnification, the relevant data for some embodiments of the present invention is shown in table 1.

The height of the long-focus camera module 20 provided by the invention is not more than 5.6mm, and the zoom magnification can reach at least 5 times.

It should be noted that the zoom magnification herein refers to a ratio of an equivalent focal length of the telephoto camera module 20 and an equivalent focal length of the wide-angle camera module 10. The equivalent focal length is related to the size of a light sensing element 232 employed by the camera module. The zoom magnification is calculated by using the equivalent focal length, because the equivalent focal length is related to the light-transmitting element group 221 of the telephoto lens 22, the angle of view, and the photosensitive element 232 of the telephoto photosensitive assembly 23, including the influence of the size factor, the invention spirit of the present invention can be embodied.

Referring to fig. 6A, taking the telephoto camera module 20 as an example, the effective focal length F1 is the focal length of the telephoto lens, and is a fixed parameter of the telephoto lens 22, after the telephoto lens is manufactured, L is fixed, and when the effective focal length F1 of the telephoto lens 22 is designed to be larger, the length of the telephoto lens 22 is designed to be longer accordingly.

The equivalent focal length P1, considering that the focal lengths of the whole telephoto lens 22 and the telephoto photosensitive assembly 23, i.e. the focal length of the whole camera module, are different from each other when the photosensitive elements 232 of the telephoto photosensitive assembly 23 matched with the same telephoto lens 22 are different from each other, the equivalent focal length P1 is different from each other, in the present invention, a zoom ratio between the telephoto camera module 20 and the wide-angle camera module 10, i.e. the focal length ratio between the two camera modules that need to be considered, i.e. the telephoto camera module 20 and the wide-angle camera module 10, is different from the focal length ratio between the telephoto lens 22 of the telephoto camera module 20 and the wide-angle lens of the wide-angle camera module 10, and the equivalent focal length is calculated by taking the telephoto camera module as an example:

p1 ═ F1 × 43.27/L, where F1 refers to the effective focal length of the telephoto lens 22, 43.27mm refers to the 135 film diagonal length, and L refers to the diagonal length of a photosensitive area of the photosensitive element 232. In some examples, L refers to the length of the diagonal of the photosensitive area of the cmos photosensitive chip.

The equivalent focal length P1 takes into account both the telephoto lens 22, the telephoto photosensitive member 23, and the size factors of the photosensitive element 232.

Referring to fig. 6B, a diagonal length of a photosensitive area of the photosensitive element 232 of the telephoto photosensitive assembly 23 is L, and a first surface of the telephoto lens 22 has a first height h, wherein the first surface is formed on the support 222 and the first light-transmitting element 2211. L can represent the overall size of the photosensitive element 232, and h reflects to some extent the height of the telephoto lens 22. When the size, especially the height dimension, of the entire telephoto camera module 20 is reduced, the height of the telephoto lens 22 is also reduced accordingly, so that h is also reduced, and a ratio of h to L larger than a certain value represents that the size of the photosensitive element 232 is also reduced compared to the conventional design. For example, the diagonal length of the conventional photosensitive element is L1, and the first height of the conventional telephoto lens is h1, so that when h/L ≧ h1/L1 is provided in this embodiment, and L < L1 on the premise that h < h1, it is described that the height of the telephoto lens 22 is reduced in this embodiment, and the size of the photosensitive element 232 is also reduced accordingly.

The h and the L satisfy the following conditions:

h/L≥0.8。

according to some embodiments of the invention, h and L satisfy the following condition:

h/L≥0.89。

according to some embodiments of the invention, h and L respectively satisfy the following conditions:

5.1mm≥h≥4.7mm，L≤5.5mm。

according to some embodiments of the invention, when h is equal to 4.9mm, the L may be 5.0mm, 5.1mm, 5.2mm, 5.3 mm.

The size of the photosensitive element 232 is reduced while affecting the light sensing performance of the telephoto imaging module 20, however, it is worth mentioning that in the present embodiment, the light sensing performance of the telephoto imaging module 20 is maintained or even can be increased while the size of the photosensitive element 232 is reduced.

Specifically, the sensitivity of the tele camera module 20 can be (A/F.No)²Measured by this parameter, a is the size of the photosensitive unit, f.no is the aperture value, f.no is F1/D, where F1 is the effective focal length, D is the aperture diameter, a is μm, D is mm, f.no is F1/D is substituted (a/f.no)²Then the sensitivity of the tele camera module 20 can be determined by (A × D/F1)²In order to measure, under the condition of unchanged optical design, the effective focal length F1 does not change, and to ensure that the photosensitivity of the telephoto imaging module 20 does not change or is enhanced, it is necessary to keep a × D ≧ 4.4 × 10^-9m ²For example, according to an example of the present invention, when the size of the photosensitive unit is 1.2 μm and the aperture diameter is 3.8mm, the product of a and D is 1.2 × 3.8, and the result is greater than 4.4.

D is kept unchanged or reduced when the first translucent member 2211 of the telephoto camera module 20 is reduced, so that the light-sensing performance of the telephoto camera module 20 needs to be maintained or the light-sensing performance of the telephoto camera module 20 needs to be enhanced, and a needs to be increased.

According to some examples of the invention, the tele camera module 20 may have dimensions and/or parameters as shown in table 1. The data in Table 1 are the data of the effective focal length of the telephoto camera module 20 of 14mm, and the measurement parameters (A/F.No) of the amount of incident light²Maintained at 0.148.

The parameters in the table are the size of the photosensitive element 232 (the length of the diagonal of the photosensitive element 232 is mm), the number of the photosensitive units 2321 of the photosensitive element 232 is 1000,000, the size a (μm) of the photosensitive unit 2321, the diameter (mm) of the light inlet of the first light-transmitting element, and the aperture value f.no. It is understood that, in the present invention, the diameter of the light entrance hole of the first light-transmitting element is equal to the diameter D of the aperture.

TABLE 1

According to some embodiments of the present invention, a ratio between an equivalent focal length of the tele camera module 20 and an equivalent focal length of the wide camera module 10 is not less than 4, and a height dimension of the tele camera module 20 is not more than 5.6 mm. Further, according to some embodiments of the invention, the height dimension of the camera unit 1 does not exceed 5.6 mm.

According to some embodiments of the present invention, the dimension A of the single photosensitive unit 2321 is greater than or equal to 1.2 μm, wherein an aperture diameter D of the telephoto lens 22 satisfies the following condition:

3.76mm≤D≤5.3mm。

according to some embodiments of the present invention, an aperture diameter D of the telephoto lens 22 satisfies the following condition:

3.8mm≤D≤5.3mm。

according to some embodiments of the invention, wherein the product of A and D has a value ≧ 4.4, where A is in μm and D is in mm.

According to some embodiments of the present invention, a ratio between the equivalent focal length of the tele camera module 20 and the equivalent focal length of the wide camera module 10 is not less than 5.

According to some embodiments of the present invention, the equivalent focal length of the telephoto camera module 20 ranges from 80mm to 160mm, and the equivalent focal length of the wide-angle camera module 10 ranges from 20mm to 40 mm.

According to some embodiments of the present invention, the size of the individual photosensitive units 2321 is not less than 1.2 μm.

According to some embodiments of the invention, the aperture value f.no satisfies the following condition:

4≥F.No≥3.25

according to some embodiments of the invention, the photosensitive cell size is not less than 1.2 μm. Optionally, the size of the photosensitive unit is 1.2 μm to 1.5 μm.

For example, the size of the photosensitive unit 2321 of the photosensitive element 232 adopted by the tele photosensitive assembly 23 of the tele camera module 20 is 8M, and the size of the photosensitive unit 2321 is 1.25 μ M. In camera unit 1 wide-angle camera module 10 can use the wide-angle lens that effective focal length is 3.55mm, long-focus camera module 20 can use the long-focus lens 22 that effective focal length is 14.43mm, correspondingly, wide-angle lens's equivalent focal length equals 24.4mm, long-focus lens 22's equivalent focal length equals 122 mm. The zoom magnification of the image pickup unit 1 is equal to 5.

Referring to fig. 7, and to fig. 2, a tele camera module 20 according to another embodiment of the invention is illustrated.

The telephoto camera module 20 includes a light steering mechanism 21, a telephoto lens 22 and a telephoto photosensitive component 23, wherein light rays sequentially pass through the light steering mechanism 21, the telephoto lens 22 and the telephoto photosensitive component 23, and the light steering mechanism 21 steers light rays from a photographed object to pass through the telephoto lens 22 to be received by the telephoto photosensitive component 23 for imaging.

In this example, a transparent element of the transparent element group 221 of the telephoto lens 22 is designed to have a smaller diameter as much as possible, so as to reduce a height dimension of the telephoto lens 22, and at the same time, the transparent element can maintain enough light to pass through to obtain a desired imaging effect, so that the entire telephoto lens 22 can normally work in the telephoto camera module 20, so that the telephoto photosensitive assembly 23 of the telephoto camera module 20 receives enough light to provide an image.

It will be appreciated by those skilled in the art that the number of light transmissive elements may be 4, 5, 6 or 7, and the number of light transmissive elements is not a limitation of the present invention.

The light transmissive element group 221 includes a plurality of light transmissive elements, one of which receives light from the light redirecting mechanism 21 first, and is referred to as a first light transmissive element 2211. The size of the first transparent member 2211 is limited by the diameter of the entrance pupil, and for the transparent members in the transparent member group 221 except for the first transparent member 2211, since the telephoto imaging module 20 has a smaller angle of view, the transparent members except for the first transparent member 2211 can be designed to have a smaller size in order to fit the smaller angle of view. In other words, the size of the first light-transmitting member 2211 in the light-transmitting member group 221 restricts the size reduction of the entire light-transmitting member group 221, thereby restricting the size reduction of the entire telephoto lens 22.

To lower the first light-transmissive member 2211, the telephoto lens 22 having a smaller aperture is designed in this example. The smaller the aperture, the larger the aperture f.no, which is the effective focal length/aperture diameter, and accordingly, the aperture diameter becomes smaller as the aperture becomes smaller without changing the effective focal length, so that the first light-transmitting element 2211 can be designed to have a smaller size W2 from the original height W1.

After the first light transmissive member 2211 is designed to be a smaller size W2, the size of the light transmissive member group 221 can also be designed to be a smaller size, so that the size H1 of the entire telephoto lens 22 is designed to be a smaller size H1', thereby contributing to a reduction in height of the telephoto lens 22.

Further, the telephoto lens 22 includes a support member 222, wherein the light transmissive element group 221 is supported by the support member 222, so that each of the light transmissive elements is stably maintained in the same optical path. While the light-transmitting element group size 221 is reduced, the thickness of the support 222 in the Z-axis direction limits the reduction in the height size of the telephoto lens 22.

In some examples of the present invention, the supporting member 222 is designed as an annular cylindrical supporting member 222, the light passes through the light-transmitting element group 221 located on the supporting member 222 in the X-axis direction, and the height dimension of the supporting member 222 in the Z-axis direction is designed to be smaller than the height dimension in the Y-axis direction, that is, the height dimension of the supporting member 222 in the Z-axis direction is reduced.

In some examples of the present invention, the light transmissive element group 221 is supported by the support 222, and the light transmissive element group 221 is exposed outside the support 222 in the Z-axis direction. More specifically, the light-transmitting element group 221 has a first side, a second side, a third side and a fourth side, wherein when the telephoto camera module 20 is installed on the electronic device body 1000, the third side is closer to the electronic device body 1000 than the first side, a direction of the first side toward the third side is a Z-axis direction, and a direction of the second side toward the fourth side is a Y-axis direction, wherein the first side and the third side are oppositely disposed, and the second side and the fourth side are oppositely disposed, wherein the first side and the third side are exposed outside the supporting member 222, that is, at this time, a height dimension of the supporting member 222 in the Z-axis direction is lower than a height dimension in the Y-axis direction.

Accordingly, the problem caused by the small aperture is insufficient light-entering amount, and in addition, the light-entering amount of the telephoto lens 22 is limited, so that more photons can be captured by a single photosensitive unit 2321 of a photosensitive element 232 of the telephoto photosensitive assembly 23 by increasing the size of the single photosensitive unit 2321, thereby ensuring the photosensitive performance of the whole photosensitive element 232, and making up for or even improving the problem of insufficient light-entering amount caused by the small aperture, so as to maintain the telephoto camera module 20 still having a good imaging effect.

It is worth mentioning that, when a single photosensitive unit 2321 of the photosensitive element 232 is designed with a larger photosensitive area, the size of the photosensitive element 232 can not be increased.

Specifically, the photosensitive element 232 includes a plurality of the photosensitive units 2321, and by increasing the size of a single photosensitive unit 2321 and reducing the number of the photosensitive units 2321, the size of the photosensitive element 232 is kept not to be increased while the photosensitive amount of the photosensitive element 232 is kept not to be reduced, and even the size of the photosensitive element 232 is reduced, so that the tele photosensitive assembly 23 does not limit the reduction of the height size of the tele camera module 20.

To further reduce the height of the tele camera module 20, the size of the tele photosensitive assembly 23 can be reduced based on the size of the photosensitive element 232, for example, from the original size H2 to a smaller size H2'.

Referring to fig. 8A, the tele photosensitive assembly 23 includes a base 231, a photosensitive element 232 and a circuit board 233, wherein the photosensitive element 232 is disposed on the circuit board 233, and the base 231 is formed around the photosensitive element 232 and supported on the circuit board 233. The circuit board 233 includes a substrate 2331 and a plurality of electronic components 2332, wherein the electronic components 2332 are formed on the substrate 2331 by SMT process mounting or the like. The types of electronic components 2332 include, but are not limited to, resistors, capacitors, driver devices, and the like.

The base 231 includes an annular base body 2311 and has an optical window 2310 in the middle to provide an optical path for the telephoto lens 22 and the photosensitive element 232.

Referring to fig. 8B, a modified embodiment of the tele photosensitive assembly 23 according to the above embodiment,

in the present embodiment, the base 231 is integrally formed on a non-photosensitive area around the circuit board 233 and the photosensitive element 232 through a molding process. In this way, the gap between the base 231 and the photosensitive element 232 is reduced, so that the height dimension of the base 231 is reduced, and the required height dimension of the circuit board 233 is also reduced, which is more favorable for reducing the height dimension of the whole tele photosensitive assembly 23. The base 231 includes an annular base body 2311 and has an optical window 2310 in the middle to provide an optical path for the telephoto lens 22 and the photosensitive element 232.

The substrate 2331 has a front surface and a back surface, wherein the front surface of the substrate 2331 faces the light-sensing elements 232, and the back surface of the substrate 2331 faces away from the light-sensing elements 232. In some examples of the invention, the electronic components 2332 are disposed on the front surface, and the electronic components 2332 are disposed mainly in a Y-axis direction of the substrate 2331, and no or less electronic components 2332 are disposed in the Z-axis direction, and the substrate 2331 extends in the Z-axis direction and the Y-axis direction, respectively, so that the substrate 2331 does not need to reserve mounting positions for the electronic components 2332 in the Z-axis direction, thereby reducing the height of the pedestal 231 in the Z-axis direction. In some examples of the invention, the electronic components 2332 are embedded in the substrate 2331, and the electronic components 2332 are mainly disposed in a Y-axis direction of the substrate 2331, and the electronic components 2332 are not disposed or are less disposed in the Z-axis direction, and the substrate 2331 extends toward the Z-axis direction and the Y-axis direction respectively, so that the substrate 2331 does not need to reserve mounting positions for the electronic components 2332 in the Z-axis direction, thereby reducing the height of the pedestal 231 in the Z-axis direction. In this example, the electronic components 2332 are disposed on the back side of the substrate 2331 to reduce the space occupation of the electronic components 2332 in the Z-axis direction with respect to the substrate 2331, thereby making the substrate 2331 with the possibility of reducing the height in the Z-axis direction.

Referring to fig. 8C, a modified embodiment of the tele photosensitive assembly 23 according to the invention is shown, wherein the tele photosensitive assembly 23 comprises a base 231, a photosensitive element 232 and a circuit board 233, wherein the base 231 is integrally formed on the photosensitive element 232 and the circuit board 233 by a molding process.

The base 231 includes a ring module base body 2311 and an optical window 2310 to provide an optical path for the telephoto lens 22 and the photosensitive element 232.

Further, with reference to fig. 7, the light turning mechanism 21 has an incident surface 211, a reflecting surface 212 and an exit surface 213, the light from the object to be photographed firstly enters the incident surface 211, then is reflected by the reflecting surface 212 to change the propagation direction, and leaves the light turning mechanism 21 from the exit surface 213, the incident surface 211 and the exit surface 213 are perpendicular to each other, in this example, a small angle is designed between the reflecting surface 212 and the exit surface 213, the included angle between the reflecting surface 212 and the exit surface 213 is not more than 45 °, and the smaller the included angle between the reflecting surface 212 and the exit surface 213 is, the more beneficial to reducing the size of the telephoto imaging module 20 is. It will be appreciated that the smaller the angle between the reflecting surface 212 and the exit surface 213, the shorter the length of the entrance surface 211 and thus the smaller the size of the light redirecting mechanism 21. It should be noted that the light diverting mechanism 21 includes a light diverting element 214 and a diverting base 215, wherein the light diverting element 214 is drivably disposed on the diverting base 215, and the size of the diverting base 215 can be reduced while the size of the light diverting element 214 is reduced.

It is worth mentioning that in this example, the light diverting element 214 is a prism, which can be made of resin material with a smaller weight, so that the light diverting element 214 has a smaller weight, and the diverting base 215 that cooperates to drive the light diverting element 214 can also be designed with a smaller size. The telephoto camera module 20 designed and manufactured in the above manner can have a small height while having a good zooming performance, so as to be suitable for the slim electronic device 100. In some examples of the present invention, the height of the tele camera module 20 is no more than 5.6mm, and the zoom magnification is at least 5 times. In some examples of the invention, the prism may also be made of a glass material.

It should be noted that the zoom magnification herein refers to a ratio of an equivalent focal length of the telephoto camera module 20 and an equivalent focal length of the wide-angle camera module 10. The equivalent focal length is related to the size of a light sensing element 232 employed by the camera module.

According to some examples of the invention, the tele camera module 20 may have dimensions and/or parameters as shown in table 2. Some examples of the case where the height dimension of the telephoto camera module 20 is not more than 5.6mm and the zoom magnification is not less than 4 times are shown in the table.

F.No, diameter (mm) of light inlet hole of the first light-transmitting element, size (mum) of the light-sensing unit 2321, (light-sensing unit size/F.No) in sequence according to the parameter types in the table²The number of photosites 2321 of the photosite 232 (× 1000,000), the size of the photosite 232 (the length of the photosite diagonal mm).

TABLE 2

h/L≥0.8。

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

Claims

An imaging unit with a light redirecting mechanism, comprising:

the telephoto imaging module comprises a light steering mechanism, a telephoto lens and a telephoto photosensitive assembly, wherein the light steering mechanism is used for steering the light rays to penetrate through the telephoto lens to be received by the telephoto photosensitive assembly, the height of the telephoto imaging module is not more than 5.6mm, the first surface of the telephoto lens has a first height h, the diagonal length of a photosensitive area of a photosensitive element of the telephoto photosensitive assembly is L, and h and L satisfy the following conditions:

h/L≥0.8。
the camera unit of claim 1, wherein a ratio between an equivalent focal length of the tele camera module and an equivalent focal length of the wide camera module is not less than 5.
The image pickup unit according to claim 2, wherein the h and the L satisfy the following conditions, respectively:

5.1mm≥h≥4.7mm，L≤5.5mm。
the camera unit of claim 1, wherein the tele camera module has an equivalent focal length in the range of 80mm to 160mm and the wide camera module has an equivalent focal length in the range of 20mm to 40 mm.
The camera unit of claim 1, wherein the height dimension of the camera unit does not exceed 5.6 mm.
The camera unit according to claim 1, wherein said light sensing element comprises a plurality of light sensing elements, light rays are received by said light sensing elements after passing through said telephoto lens, wherein a size A of a single said light sensing element is greater than or equal to 1.2 μm, wherein an aperture diameter D of said telephoto lens satisfies the following condition:

3.76mm≤D≤5.3mm。
the camera unit of claim 6, wherein said tele photosensitive assembly further comprises a base and a circuit board, wherein said base is integrally formed with said photosensitive element and said circuit board.
The camera unit of claim 7, wherein said circuit board comprises a substrate and a plurality of electronic components, wherein said electronic components are disposed in a Y-axis direction of said substrate.
The camera unit of claim 1, wherein said light redirecting mechanism has an entrance surface for light to enter, a reflection surface for reflecting light and entering said telephoto lens through said exit surface, and an exit surface, wherein an angle between said reflection surface and said exit surface is not more than 45 °.
The camera unit of claim 1, wherein said light redirecting mechanism comprises a prism, wherein said prism is made of a resin material.
The camera unit of claim 1, wherein the telephoto lens comprises a group of light transmissive elements and a support member, wherein the group of light transmissive elements is received by the support member, wherein a radial dimension of the support member in a Z-axis direction is lower than a radial dimension in a Y-axis direction.
The camera unit according to claim 1, wherein the telephoto lens includes a light transmissive element group and a support member, wherein the light transmissive element group is supported by the support member, and the light transmissive element group is exposed outside the support member in a Z-axis direction.
A mobile electronic device, comprising:

an electronic apparatus body and the imaging unit according to any one of claims 1 to 12, wherein the imaging unit is communicably connected to the electronic apparatus body.
The mobile electronic device of claim 13, wherein the electronic device body includes a processing unit and a display unit, wherein the processing unit is communicably connected to the display unit and the camera unit is operatively connected to the processing unit.
An imaging unit with a light redirecting mechanism, comprising:

the telephoto imaging system comprises a telephoto imaging module and a wide-angle imaging module, wherein the wide-angle imaging module provides a wide-angle image, a ratio between an equivalent focal length of the telephoto imaging module and an equivalent focal length of the wide-angle imaging module is not less than 4, the telephoto imaging module comprises a light steering mechanism, a telephoto lens and a telephoto photosensitive assembly, the light steering mechanism is used for steering the light to transmit through the telephoto lens to be received by the telephoto photosensitive assembly for imaging, the height of the telephoto imaging module is not more than 5.6mm, a size of a photosensitive unit of a photosensitive element of the telephoto photosensitive assembly is A, a diameter of an aperture of the telephoto lens is D, and A and D satisfy the following conditions:

the product of A and D has a value of 4.4 or more, wherein A is in μm and D is in mm.
The camera unit of claim 15, wherein a ratio between an equivalent focal length of the tele camera module and an equivalent focal length of the wide camera module is not less than 5.
The image pickup unit according to claim 16, wherein the h and the L satisfy the following conditions, respectively:

5.1mm≥h≥4.7mm，L≤5.5mm。
the camera unit of claim 15, wherein the tele camera module has an equivalent focal length in the range of 80mm to 160mm and the wide camera module has an equivalent focal length in the range of 20mm to 40 mm.
The camera unit of claim 15, wherein the height dimension of the camera unit does not exceed 5.6 mm.
The camera unit of claim 15, wherein said light sensing elements comprise a plurality of light sensing elements, light rays passing through said telephoto lens being received by said light sensing elements, wherein a size a of a single said light sensing element is ≧ 1.2 μm, wherein said aperture diameter D satisfies a condition: d is more than or equal to 3.76mm and less than or equal to 5.3 mm.
The camera unit of claim 20, wherein said tele photosensitive assembly further comprises a base and a circuit board, wherein said base is integrally formed with said photosensitive element and said circuit board.
The camera unit of claim 21, wherein said circuit board comprises a substrate and a plurality of electronic components, wherein said electronic components are disposed in a Y-axis direction of said substrate.
The camera unit of claim 15, wherein said light redirecting mechanism has an entrance surface for light to enter, a reflection surface for reflecting light and entering said telephoto lens through said exit surface, and an exit surface, wherein an angle between said reflection surface and said exit surface is not more than 45 °.
The camera unit of claim 15, wherein said light redirecting mechanism comprises a prism, wherein said prism is made of a resin material.
The camera unit of claim 15, wherein the telephoto lens comprises a group of light transmissive elements and a support member, wherein the group of light transmissive elements is received by the support member, and wherein a radial dimension of the support member in a Z-axis direction is lower than a radial dimension in a Y-axis direction.
The camera unit according to claim 15, wherein the telephoto lens comprises a light transmissive element group and a support member, wherein the light transmissive element group is supported by the support member, and the light transmissive element group is exposed outside the support member in a Z-axis direction.
A mobile electronic device, comprising:

an electronic device body and the camera unit according to any of the preceding claims 15 to 26, wherein the camera unit is communicably connected to the electronic device body.
The mobile electronic device of claim 27, wherein the electronic device body comprises a processing unit and a display unit, wherein the processing unit is communicably connected to the display unit and the camera unit is operatively connected to the processing unit.
A method of manufacturing an imaging unit, comprising the steps of:

providing a long-focus camera module and a wide-angle camera module with the height not exceeding 5.6mm, wherein the ratio of the equivalent focal lengths of the long-focus camera module and the wide-angle camera module is not less than 4; and

and assembling the long-focus camera module and the wide-angle camera module to form a camera unit.
The camera unit of claim 29, wherein in the above method, the tele camera module comprises a light redirecting mechanism, a tele lens, and a tele photosensitive assembly, wherein the light redirecting mechanism is configured to redirect the light through the tele lens to be received by the tele photosensitive assembly for imaging, wherein the first surface of the tele lens has a first height h, a diagonal length L of a photosensitive area of a photosensitive element of the tele photosensitive assembly, and wherein h and L satisfy the following condition:

h/L≥0.8。
the camera unit of claim 29, wherein in the above method, the tele camera module comprises a light redirecting mechanism, a tele lens, and a tele photosensitive assembly, wherein the light redirecting mechanism is configured to redirect the light through the tele lens to be received by the tele photosensitive assembly for imaging, wherein the tele camera module has a height dimension of no more than 5.6mm, wherein a size of a photosensitive unit of a photosensitive element of the tele photosensitive assembly is a, and a diameter of an aperture of the tele lens is D, wherein a and D satisfy the following condition:

the product of A and D has a value of 4.4 or more, wherein A is in μm and D is in mm.