WO2021238389A1

WO2021238389A1 - Optical module and electronic apparatus

Info

Publication number: WO2021238389A1
Application number: PCT/CN2021/083925
Authority: WO
Inventors: 樊浩
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-05-29
Filing date: 2021-03-30
Publication date: 2021-12-02
Also published as: CN113740976A; CN113740976B

Abstract

Provided are an optical module (100) and an electronic apparatus (1000). The optical module (100) comprises a lens (10), a first functional device (20), a second functional device (30) and a light conductor (40). The first functional device (20) and the second functional device (30) share one lens (10), so as to reduce the number of uses of the lens (10).

Description

Optical modules and electronic equipment

Priority information

This application requests the priority and rights of the patent application with the patent application number 202010472378.7 filed with the State Intellectual Property Office of China on May 29, 2020, and the full text is incorporated herein by reference.

Technical field

The present invention relates to the technical field of electronic equipment, and more specifically, to an optical module and an electronic device having the optical module.

Background technique

In electronic equipment such as mobile phones, IPADs, and computers, multiple functional devices for emitting and receiving light are often used to realize functions such as taking pictures and distance measurement. Generally, each functional device needs to be equipped with a lens to transmit light to assist the realization of the function. Correspondingly, on the housing of the electronic device, each lens corresponding to the functional device needs to be installed with a through hole on the housing to install the lens in the corresponding through hole.

Summary of the invention

The embodiments of the present application provide an optical module and electronic equipment.

The optical module of the embodiment of the present invention includes a lens, a first functional device, a second functional device, and a light guide. The lens includes a first surface, and a microstructure is provided on the first surface of the lens. The first functional device is arranged on the side where the first surface of the lens is located, and the first orthographic projection of the transmitting and receiving surface of the first functional device in a plane perpendicular to the optical axis of the lens is located on the micro The structure is in the second orthographic projection of the plane. The second functional device is arranged on the side where the first surface of the lens is located and spaced from the first functional device, and the third orthographic projection of the transmitting and receiving surface of the second functional device in the plane is opposite to The second orthographic projection is at least partially staggered. The light guide is used to guide the light between the lens and the second functional device.

The electronic device of the embodiment of the present application includes a housing and an optical module. The optical module is combined with the housing. The optical module includes a lens, a first functional device, a second functional device and a light guide. The lens includes a first surface, and a microstructure is provided on the first surface of the lens. The first functional device is arranged on the side where the first surface of the lens is located, and the first orthographic projection of the transmitting and receiving surface of the first functional device in a plane perpendicular to the optical axis of the lens is located on the micro The structure is in the second orthographic projection of the plane. The second functional device is arranged on the side where the first surface of the lens is located and spaced from the first functional device, and the third orthographic projection of the transmitting and receiving surface of the second functional device in the plane is opposite to The second orthographic projection is at least partially staggered. The light guide is used to guide the light between the lens and the second functional device. The housing includes a through hole.

The additional aspects and advantages of the embodiments of the present invention will be partly given in the following description, and part of them will become obvious from the following description, or be understood through the practice of the embodiments of the present invention.

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

FIG. 1 is a three-dimensional schematic diagram of an optical module according to some embodiments of the present application;

FIG. 2 is a three-dimensional schematic diagram of another viewing angle of the optical module of some embodiments of the present application;

Fig. 3 is a right side view of the optical module in Fig. 1;

4 is a schematic plan view of a lens of an optical module according to some embodiments of the present application;

5 is a schematic diagram of the positions of the lens and the first functional device of the optical module in some embodiments of the present application;

Figure 6 is a cross-sectional view along the VI-VI line in Figure 5;

FIG. 7 is a three-dimensional schematic diagram of a flashlight of an optical module according to some embodiments of the present application;

FIG. 8 is a three-dimensional schematic diagram of another view angle of the flashlight of the optical module according to some embodiments of the present application;

FIG. 9 is a three-dimensional schematic diagram of a color temperature sensor of an optical module according to some embodiments of the present application;

FIG. 10 is a three-dimensional schematic diagram of another viewing angle of the color temperature sensor of the optical module according to some embodiments of the present application;

FIG. 11 is a three-dimensional schematic diagram of a light guide of an optical module according to some embodiments of the present application;

FIG. 12 is a three-dimensional schematic diagram of another viewing angle of the light guide of the optical module according to some embodiments of the present application;

Figure 13 is a front view of the light guide in Figure 11;

Fig. 14 is a cross-sectional view of the light guide in Fig. 13 along the line XIV-XIV;

15 is a cross-sectional view of the optical module in FIG. 1;

Fig. 16 is a side view of an optical module according to some embodiments of the present application;

FIG. 17 is a schematic plan view of an electronic device according to some embodiments of the present application.

Detailed ways

The embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings indicate the same or similar elements or elements with the same or similar functions throughout.

In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are exemplary, and are only used to explain the embodiments of the present invention, and should not be understood as limiting the present invention.

In the present invention, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

Please refer to FIG. 1 to FIG. 3. The present application provides an optical module 100. The optical module 100 includes a lens 10, a first functional device 20, a second functional device 30 and a light guide 40. The lens 10 includes a first surface 12, and a microstructure 122 is provided on the first surface 12 of the lens 10. The first functional device 20 is arranged on the side where the first surface 12 of the lens 10 is located. The first orthographic projection S1 of the transceiver surface 22 of the first functional device 20 in a plane P1 perpendicular to the optical axis OO1 of the lens 12 is located in the microstructure 122 is in the second orthographic projection S2 of the plane P1. The second functional device 30 is arranged on the side where the first surface 12 of the lens 10 is located and is spaced from the first functional device 20. The projection S2 is at least partially staggered. The light guide 40 is used to guide the light between the lens 10 and the second functional device 30.

Referring to FIG. 4, in some embodiments, the microstructure 122 includes Fresnel patterns.

Please refer to FIG. 5. In some embodiments, the center of the Fresnel pattern is aligned with the center of the first functional device 20.

1 to 3, in some embodiments, the first functional device 20 is a transmitter, the second functional device 30 is a receiver, and the light guide 40 is used to guide light emitted from the microstructure to the receiver ; Or the first functional device 20 is a receiver, the second functional device 30 is a transmitter, and the light guide 40 is used to conduct light emitted from the transmitter to the microstructure.

1 to 3, in some embodiments, the transmitter includes at least one of a flashlight, a transmitter unit of a proximity sensor, an infrared light transmitter of a time-of-flight depth camera, and an infrared light transmitter of a structured light depth camera one.

1 to 3, in some embodiments, the receiver includes: a color temperature sensor, a receiving unit of a proximity sensor, an infrared light receiver of a time-of-flight depth camera, an infrared light receiver of a structured light depth camera, and ambient light At least one of a sensor and an image sensor.

Referring to FIG. 3, in some embodiments, the first vertical distance between the transmitting and receiving surface of the first functional device 20 and the microstructure is smaller than the second vertical distance between the transmitting and receiving surface 32 of the second functional device 30 and the microstructure .

Referring to FIGS. 11 to 14, in some embodiments, the light guide 40 includes: a bracket 42 with a receiving space 420; and at least two light path changing elements 44 arranged in the receiving space 420, at least two The two optical path changing elements 44 are used to change the light transmission path so that light can be transmitted between the lens 10 and the second functional device 30.

Referring to Figures 11 to 15, in some embodiments, the bracket 42 includes a first end 47 and a second end 48 opposite to each other. The first end 47 is provided with a first notch 472 communicating with the receiving space 420, The end 48 is provided with a second notch 482 communicating with the accommodating space 420. The first notch and the second notch are located on opposite sides of the bracket. The first notch 472 and the second notch 482 are located on the opposite sides of the bracket 42. The notch 472 corresponds to the first surface 12 of the lens 10, and the second notch 482 corresponds to the second functional device 30.

The first light path changing element 44 is arranged on the inner side wall 422 of the bracket 42 and transmits the light entering from the first notch 472 to the second light path changing element 46, and the second light path changing element 46 is arranged on the inner side wall 422 of the bracket 42 and used For transmitting the light from the first light path changing element 44 from the second notch 482 to the second functional device 30; or the second light path changing member 46 is arranged on the inner side wall 422 of the bracket 42 and used for the light entering from the second notch 482 The light from the second functional device 30 is transmitted to the first light path changing element 44. The first light path changing element 44 is arranged on the inner side wall 422 of the bracket 42 and transmits the light from the second light path changing element 46 from the first notch 472 to the lens. 10的微结构122。 10 of the microstructure 122.

Referring to FIG. 16, in some embodiments, the light guide 40 includes a light guide fiber, the light guide fiber 49 includes a first surface 492 and a second surface 494 opposite to each other, and the first surface 492 of the light guide fiber 49 is opposite to each other. The microstructure 122 is opposite, and the second surface 492 of the light guide fiber 49 is opposite to the receiving and receiving surface 32 of the second functional device 30.

The light guide fiber 49 is used to guide the light emitted from the microstructure 122 to the second functional device 30 along the direction from the first surface 492 to the second surface 494 of the light guide fiber 49; or the light guide fiber 49 is used to guide the light from the The light of the two functional devices 30 is guided to the microstructure 122 along the direction from the second surface 494 to the first surface 492 of the light guiding fiber 49.

Referring to FIG. 17, the present application also provides an electronic device 1000. The electronic device 1000 includes the optical module 100 and the housing 200 of any one of the above-mentioned embodiments. The optical module 100 is combined with the housing 200.

The implementation of the present application will be further described below in conjunction with the accompanying drawings.

Please refer to FIGS. 1 to 3, where the lens 10 is made of a light-transmitting material, such as glass, plastic, or the like. The microstructure 122 includes Fresnel patterns. Specifically, the Fresnel patterns appear as a plurality of concentric circles from small to large, and the cross section of the Fresnel pattern is sawtooth (as shown in 6). In an example, the microstructure 122 may be a plurality of concentric circles protruding from the first surface 12 of the lens 10 (shown in FIGS. 3 and 4). In an example, the microstructure 122 may be a plurality of concentric circles (not shown) formed concavely relative to the first surface 12 of the lens 10.

In some embodiments, the first functional device 20 can be a transmitter, and correspondingly, the second functional device 30 can be a receiver. At this time, the light guide 40 is used to enter the lens 10 from the outside and pass through the microstructure. The light emitted by 122 refracted is conducted to the receiver. In other embodiments, the first functional device 20 is a receiver, the second functional device 30 is a transmitter, and the light guide 40 is used to guide the light emitted from the transmitter to the microstructure 122 of the lens 10. In still other embodiments, the first functional device 20 and the second functional device 30 are both receivers. In still other embodiments, the first functional device 20 and the second functional device 30 are both transmitters.

Specifically, the transmitter includes at least one of a flashlight, a transmitter unit of a proximity sensor, an infrared light transmitter of a time-of-flight depth camera, and an infrared light transmitter of a structured light depth camera. The receiver includes at least one of a color temperature sensor, a receiving unit of a proximity sensor, an infrared light receiver of a time-of-flight depth camera, an infrared light receiver of a structured light depth camera, an ambient light sensor, and an image sensor.

In some embodiments, the first functional device 20 and the second functional device 30 have a functionally corresponding relationship, and the two can be paired to realize one function together. At this time, the light emitted by the transmitter exits to the outside after passing through the lens 10, is reflected by external objects and then passes through the lens 10, and can be received and processed by the receiver to achieve corresponding functions. In an example, when the transmitter is a flash and the receiver is an image sensor, the flash emits light, and the light is emitted to the outside through the lens 10 to supplement the ambient light. The light is reflected back by external objects and can be passed through the lens 10 The image sensor receives it, and the image sensor processes the light to form an image. In another example, the transmitter is an infrared light transmitter of a structured light depth camera. When the receiver is an infrared light receiver of a structured light depth camera, the infrared light transmitter of the structured light depth camera emits infrared light, and the infrared light passes through the lens 10 is emitted to the outside world, the infrared light is reflected back by external objects and after passing through the lens 10, it can be received by the infrared light receiver of the structured light depth camera, and the infrared light receiver of the structured light depth camera processes the light to measure the distance. In another example, the transmitter is an infrared light transmitter of a time-of-flight depth camera, and when the receiver is an infrared light receiver of a time-of-flight depth camera, the infrared light transmitter of the time-of-flight depth camera emits infrared light, and the infrared light passes through the lens 10 is emitted to the outside world, the infrared light is reflected back by external objects and after passing through the lens 10, it can be received by the infrared light receiver of the time-of-flight depth camera, and the infrared light receiver of the time-of-flight depth camera processes the light to measure the distance. In another example, the transmitter is the transmitter unit of the proximity sensor, and when the receiver is the receiver unit of the proximity sensor, the transmitter unit of the proximity sensor emits infrared light, and the infrared light is emitted to the outside through the lens 10, and the infrared light is reflected by external objects. After passing through the lens 10, it can be received by the receiving unit of the proximity sensor, and the receiving unit of the proximity sensor processes the light to measure the distance.

In some embodiments, the first functional device 20 and the second functional device 30 do not have a functionally corresponding relationship, and the two work independently and implement their respective functions. At this time, the light emitted by the emitter passes through the lens 10 and then exits to the outside world to realize the first function. The external light can be received and processed by the receiver after passing through the lens 10 to realize the second function. In an example, when the transmitter is a flash and the receiver is a color temperature sensor, the light emitted by the flash passes through the lens 10 and then exits to the outside world to realize the light supplement function. After passing through the lens 10, the external light can be received and processed by the color temperature sensor to realize the function of detecting the color temperature. In another example, when the transmitter is a flash and the receiver is an ambient light sensor, the light emitted by the flash passes through the lens 10 and then exits to the outside world to realize the light supplement function. After passing through the lens 10, the external light can be received and processed by the ambient light sensor to realize the function of detecting the intensity of the ambient light.

In addition, the third orthographic projection S3 and the second orthographic projection S2 at least partially staggered may include the following situations: in an example, the third orthographic projection S3 and the second orthographic projection S2 are completely staggered, as shown in FIG. 3, the third orthographic projection S3 is separated from the second orthographic projection S2, that is, there is no overlap between the two. Since the first orthographic projection S1 is located in the second orthographic projection S2 of the microstructure 122 on the plane P1, and the third orthographic projection S3 and the second orthographic projection S2 are completely staggered, the first functional device 20 and the second functional device 30 are separated from each other. It will not interfere with each other during installation, and the thickness in the Z direction can be reduced, thereby reducing the thickness of the optical module 100.

In another example, the third orthographic projection S3 and the second orthographic projection S2 are partially staggered (not shown), and the third orthographic projection S3 and the second orthographic projection S2 intersect, that is, there are overlapping parts and non-overlapping parts. part. Since the first orthographic projection S1 is located in the second orthographic projection S2 of the microstructure 122 on the plane P1, and the third orthographic projection S3 is partially offset from the second orthographic projection S2, the first functional device 20 and the second functional device 30 are in positions There is a partial overlap, the optical module 100 has a small area in the XY plane and has a compact structure.

In the optical module 100 of the present application, the first functional device 20 and the lens 10 are arranged opposite to each other, and the light guide 40 is used to guide the light between the lens 10 and the second functional device 30, thereby realizing the first functional device 20 and the second function The device 30 shares a lens 10, which reduces the number of lenses 10 used. Accordingly, there is no need to open multiple through holes 210 (shown in FIG. 17) on the housing 200 (shown in FIG. 17) of the electronic device 1000 (shown in FIG. 17). ), reducing the complexity of the design of the housing 200 of the electronic device 1000.

In the related art, the first functional device and the second functional device can all be placed under the microstructure and opposite to the microstructure. At this time, there is no need to provide a light guide. The first functional device and the second functional device transmit and receive light directly. Through the lens. However, in order to make the first functional device and the second functional device opposite to the microstructure, and the first functional device is aligned with the Fresnel center, a part of the Fresnel pattern outside the center needs to be aligned with the second functional device, then Need to design a lens with a larger diameter. In the optical module 100 of the present application, the first functional device 20 and the lens 10 are disposed opposite to each other, and the light guide 40 is used to transmit the light between the lens 10 and the second functional device 30, and there is no need to design a lens 10 with a larger diameter, namely The diameter of the lens 10 is smaller than that of the aforementioned designed lens, which can save the material of the lens 10.

In another related technology, the first functional device and the second functional device can all be placed under the microstructure and opposite to the microstructure. At this time, there is no need to provide a light guide. The first functional device and the second functional device transmit and receive The light passes directly through the lens. In order to make the first functional device and the second functional device both face the microstructure and align with the center of the microstructure, although it is not necessary to design a lens with a larger diameter, it is necessary to design two Fresnel centers to be respectively aligned with the center of the microstructure. The first functional device is aligned with the second functional device, and the design of the two Fresnel centers may cause irregularities (asymmetry) of the Fresnel texture. In the optical module 100 of the present application, the first functional device 20 and the lens 10 are arranged opposite to each other, and the light guide 40 is used to transmit the light between the lens 10 and the second functional device 30. There is no need to design two Fresnel centers and no There is a problem of irregular Finier texture.

Furthermore, when light passes through an ordinary lens, the corners and corners will become dark and blurred. Take the convex lens made of glass as an example. The lens of the convex lens is thicker, and the part of the light traveling straight in the glass will attenuate the light, resulting in darkening and blurring of corners and corners. In this embodiment, the lens 10 of the optical module 100 is a lens with Fresnel pattern. Compared with the ordinary convex lens, the optical material of the part where the light travels straight in the lens is removed, and the lens 10 only retains the curved surface that undergoes refraction. A large amount of optical materials can be saved while reducing light attenuation. While achieving the same light-gathering effect as ordinary convex lenses, the thickness of the lens 10 is thinner, and the phenomenon of darkening and blurring of corners and corners can be reduced.

Please refer to FIGS. 3 and 5. In some embodiments, the center of the Fresnel pattern is aligned with the center of the first functional device 20.

The center of the first functional device 20 refers to the center of the transmitting and receiving surface 22 of the first functional device 20. For example, if the first functional device 20 is a transmitter, and specifically, the first functional device 20 is a flash lamp, the center of the first functional device 20 refers to the center of the light-emitting area of the flash lamp. Or, the first functional device 20 is a receiver, specifically, the first functional device 20 is a color temperature sensor, and the center of the first functional device 20 refers to the center of the photosensitive area of the color temperature sensor.

Aligning the center of the Fresnel pattern with the center of the first functional device 20 can maximize the auxiliary effect of the lens 10. For example, when the first functional device 20 is an emitter, the light emitted by the emitter can be uniformly emitted from the light-emitting center. Diffusion outwards, or when the first functional device 20 is a receiver, the light incident from the outside can be accurately concentrated on the sensing area of the receiver.

In this embodiment, a device with a higher demand for the lens 10 can be selected as the first functional device 20, a device with a lower demand for the lens 10 can be selected as the second functional device 30, and the center of the first functional device 20 is aligned with the lens The center of the Fresnel pattern of 10 is aligned, so as to maximize the auxiliary effect of the lens 10.

In an example, the first functional device 20 is a flash lamp, and the second functional device 30 is a color temperature sensor. Among them, the flash lamp needs to use the lens 10 to converge the light emitted by the flash lamp and emit it to the outside to enhance the supplementary light effect and improve the imaging effect in a dark light environment. The color temperature sensor only needs to receive light from the outside through the lens 10 to detect the color temperature. In comparison, the demand of the flashlight for the lens 10 is greater than the demand for the lens 10 of the color temperature sensor. Aligning the center of the flashlight with the center of the Fresnel pattern of the lens 10 is beneficial to maximize the auxiliary effect of the lens 10.

In another example, the first functional device 20 is a flashlight, and the second functional device 30 is an ambient light sensor. Among them, the flash lamp needs to use the lens 10 to converge the light emitted by the flash lamp and emit it to the outside to enhance the supplementary light effect and improve the imaging effect in a dark light environment. The ambient light sensor only needs to receive light from the outside through the lens 10 to detect the intensity of the ambient light. In comparison, the demand of the flash lamp for the lens 10 is greater than the demand for the lens 10 of the ambient light sensor. Aligning the center of the flash lamp with the center of the Fresnel pattern of the lens 10 is beneficial to maximize the auxiliary effect of the lens 10 .

Referring to FIG. 3, in some embodiments, the first vertical distance d1 between the transmitting and receiving surface 22 of the first functional device 20 and the first surface 12 of the lens 10 is smaller than the transmitting and receiving surface 32 of the second functional device 30 and the lens 10 The second vertical distance d2 between the first faces 12.

Specifically, the setting of the first vertical distance d1 is determined according to the type of the first functional device 20. For example, when the first functional device 20 is a flash lamp, d1 can be set to 0.3 mm. The second vertical distance d2 is set to ensure that the light emitted from the microstructure 122 of the lens 10 has enough space to propagate the light inside the light guide 40, and to ensure that the light inside the light guide 40 changes its angle to satisfy the light It can be conducted between the first surface 12 of the lens 10 and the second functional device 30 through the light guide 40.

In other embodiments, the first vertical distance between the transmitting and receiving surface of the first functional device and the first surface of the lens may be greater than or equal to the second vertical distance between the transmitting and receiving surface of the second functional device and the first surface of the lens . That is, in the optical axis direction of the lens 10, the second functional device is located between the first functional device and the lens. At this time, the thickness in the Z direction can be reduced, thereby reducing the thickness of the optical module 100.

More specifically, referring to FIGS. 1 and 2, the lens 10 includes a first surface 12 and a second surface 14. The first surface 12 is opposite to the second surface 14, the first surface 12 is provided with a microstructure 122, and the first surface 12 is provided with a microstructure 122. A boss 16 is provided on the two sides 14. The boss 16 increases the thickness of the effective optical portion of the lens 10 and can better transmit light.

In the following, in this embodiment, the first functional device 20 is used as a flashlight, the second functional device 30 is a color temperature sensor, and the light guide 40 is used to conduct light emitted by the first functional device 20 to the outside, and will remove the light from the lens 10 The light emitted from the structure 122 is transmitted to the second functional device 30 as an example for description.

Referring to FIGS. 7 and 8, the flash lamp 20 includes a light-emitting surface 22 and a mounting surface 26. The light emitting surface 22 and the mounting surface 26 are arranged opposite to each other, the light emitting surface 22 faces the first surface 12 of the lens 10, and the light emitting surface 22 has a light emitting center 24 which is aligned with the center of the microstructure 122. The mounting surface 26 is far away from the first surface 12 of the lens 10, and a plurality of electrical connectors 262 are provided on the mounting surface 26. The mounting surface 26 is mechanically connected to the circuit board (not shown) by welding or the like. The multiple electrical connectors 262 are used To realize the electrical connection between the circuit board and the flash 20.

9 and 10, the color temperature sensor 30 includes a first surface 31 and a second surface 33, the first surface 31 and the second surface 33 are arranged opposite to each other, the first surface 31 faces the first surface 12 of the lens 10, and the second surface The surface 33 is away from the first surface 12 of the lens 10. The first surface 31 has a photosensitive area, which can be defined as a light-receiving surface 32. The photosensitive area may be located at the center of the first surface 31 or an off-center position, which is not limited here. In this embodiment, a plurality of electrical connectors 332 are provided on the second surface 33, and the second surface 33 is mechanically connected to the circuit board (not shown) by welding or the like. The multiple electrical connectors 332 are used to realize the circuit board and The electrical connection of the color temperature sensor 30.

It should be noted that the flashlight 20 and the color temperature sensor 30 can be mounted on the same circuit board for higher integration, or can be mounted on different circuit boards to make the module design more flexible.

Referring to FIGS. 11-14, in some embodiments, the light guide 40 includes a bracket 42 and at least two light path changing elements. The two light path changing elements are a first light path changing element 44 and a second light path changing element 46, respectively. .

The bracket 42 is provided with a receiving space 420. At least two light path changing elements (the first light path changing element 44 and the second light path changing element 46) are arranged in the accommodating space 420 for changing the light transmission path so that light can pass between the lens 10 and the second functional device 30 transmission.

Specifically, referring to FIG. 15, in some embodiments, the bracket 42 includes a first end 47 and a second end 48 opposite to each other. The first end 47 is provided with a first notch 472 communicating with the containing space 420, and The end 48 is provided with a second gap 482 communicating with the accommodating space 420. The first gap 472 and the second gap 482 are located on opposite sides of the bracket 42. The first gap 472 corresponds to the first surface 12 of the lens 10, and the second gap 482 corresponds to the second functional device 30.

In some embodiments, a part of the second functional device 30 extends into the second notch 482 and is attached to a part of the bracket 42. On the one hand, the thickness in the Z direction can be reduced, thereby reducing the thickness of the optical module 100 . On the other hand, it can be ensured that the light is transmitted between the light guide 40 and the second functional device 30 without leaking from the second gap 482 to affect the normal operation of other nearby functional devices.

In an example, when the second functional device 30 is a receiver, the first light path changing element 44 is arranged on the inner side wall 422 of the bracket 42 and transmits the light entering from the first notch 472 to the second light path changing element 46, The second light path changing element 46 is disposed on the inner side wall 422 of the bracket 42 and is used to transmit the light from the first light path changing element 44 from the second notch 482 to the second functional device 30.

In another example, when the second functional device 30 is a transmitter, the second optical path changing element 46 is disposed on the inner side wall 422 of the bracket 42 and is used to transmit the light of the second functional device 30 entering from the second gap 482 To the first light path changing element 44, the first light path changing element 44 is disposed on the inner side wall 422 of the bracket 42 and transmits the light from the second light path changing element 46 from the first notch 472 to the microstructure 122 of the lens 10.

Among them, in some embodiments, the first light path changing element 44 and the second light path changing element 46 may be mirrors or reflective prisms. The first light path changing element 44 and the second light path changing element 46 utilize light reflection. Conduct light, so that it will not affect the waveband of the transmitted light. When the second functional device 30 is an optical detection sensor, for example, when the second functional device 30 is a color temperature sensor, it will not change because of the waveband of the light received by the color temperature sensor. And affect the judgment of the color temperature sensor. The first light path changing element 44 can be designed to be placed in the accommodating space 420 of the bracket 42 at the position and angle, so that the light can be transmitted between the lens 10 and the second functional device 30 to the maximum, and the light utilization rate can be improved. Further, the inner side wall 422 of the bracket 42 can be coated with black paint except the surface where the first light path changing element 44 and the second light path changing element 46 are provided to reduce the diffuse reflection of light, thereby reducing the effect of diffuse reflection on the second functional device 30. The impact of normal work.

Please continue to refer to FIG. 17, when the flash 20 emits light, the light-emitting surface 22 of the flash 20 emits light toward the microstructure 122 of the lens 10, and the light is emitted to the outside through the lens 10. When external light enters the lens 10, a part of the light is refracted and enters the first notch 472 of the light guide 40 after passing through the microstructure 122 of the lens 10. The light incident from the first notch 472 is incident on the reflecting mirror 44. The reflecting surface of the reflector 44 is inclined at a certain angle toward the first notch 472 to ensure that the light emitted by the microstructure 122 of the lens 10 and entering the accommodation space 420 from the first notch 472 can be received, and the received light can be reflected to Mirror 46. The reflecting surface of the reflecting mirror 46 faces the second notch 482 horizontally, ensuring that the light reflected by the reflecting mirror 44 can be received, and the received light can be reflected to the area corresponding to the second notch 482 and the color temperature sensor 30. After the light received by the reflector 46 is reflected by the reflector 46 to the area corresponding to the second notch 482 and the color temperature sensor 30, a part of the light is incident on the photosensitive area 32 of the color temperature sensor 30, and is received by the photosensitive area 32 to achieve color temperature control. Detection.

In addition, the flash 20 in this embodiment can emit light toward the lens 10, and emit the light to the outside through the lens 10, so that the light emitted to the outside is more concentrated, and the light supplement effect is enhanced to better assist in taking pictures. The light guide 40 can transmit the light from the outside that is refracted by the microstructure 122 of the lens 10 to the photosensitive area 32 of the color temperature sensor 30 through reflection. Because of the avoidance of refraction, the light will not change when transmitted in the containing space 420. The wavelength and the ratio of light of different wavelengths can enable the light received by the color temperature sensor 30 to restore the true external light to the greatest extent, thereby ensuring the accuracy of color temperature detection.

Please refer to FIG. 16. In some embodiments, the light guide 40 of the optical module 100 is a light guide fiber 49. The light guide fiber 49 includes a first surface 492 and a second surface 494 opposite to each other. The first surface 492 of the light guide fiber 49 is opposite to the microstructure 122 (the first surface 12 of the lens 10), and the second surface of the light guide fiber 49 492 is opposite to the transmitting and receiving surface 32 of the second functional device 30.

In an example, when the second functional device 30 is a receiver, the light guide fiber 49 is used to guide the light emitted from the microstructure 122 along the direction from the first surface 492 to the second surface 494 of the light guide fiber 49 to The second function device 30. In another example, when the second functional device 30 is a transmitter, the light guide fiber 49 is used to guide the light from the second functional device 30 along the direction from the second surface 494 to the first surface 492 of the light guide fiber 49 Conducted to the microstructure 122.

Taking the second functional device 30 as the color temperature sensor 30 as an example, in some embodiments, when external light enters the lens 10, a part of the light is refracted into the first light guide fiber 49 after passing through the microstructure 122 of the lens 10. On the surface 492, the light is totally reflected at a certain angle inside the light guiding fiber 49, and is transmitted to the photosensitive area 32 of the color temperature sensor 30 along the direction from the first surface 492 to the second surface 494 of the light guiding fiber 49.

Further, the light guide 40 adopts a light guide fiber 49, which can transmit the light from the outside refracted by the microstructure 122 of the lens 10 to the photosensitive area 32 of the color temperature sensor 30 through total reflection. Because of the avoidance of refraction, The wavelength of light and the ratio of light of different wavelengths are not changed during transmission in the accommodation space 420, so that the light received by the color temperature sensor 30 can restore the real external light to the greatest extent, thereby ensuring the accuracy of color temperature detection.

Please refer to FIG. 17, this application also provides an electronic device 1000. The electronic device 1000 may be a mobile phone, a tablet computer, a smart watch, a head-mounted display device, etc., and there is no limitation here. The electronic device 1000 includes the optical module 100 and the housing 200 of any one of the above embodiments. The optical module 100 is combined with the housing 200.

Hereinafter, the electronic device 1000 is a mobile phone, the first functional device 20 is a flashlight, and the second functional device 30 is a color temperature sensor as an example for description. In some embodiments, the optical module 100 is disposed inside the housing 200, and the housing 200 includes a through hole 210, and a lens 10 is disposed in the through hole 210. The size of the through hole 210 matches the size of the lens 10, the larger the diameter of the lens 10, the larger the diameter of the through hole 210, and the smaller the diameter of the lens 10, the smaller the diameter of the through hole 210.

Please refer to FIG. 15. In an example, the optical module 100 is combined with the housing 200 so that the lens 10 is located on the back of the housing 200 to be used as a rear component of a mobile phone. When the housing 200 includes a through hole 210, the through hole 210 is used to install the lens 10. At this time, in the electronic device 1000 of the present application, the first functional device 20 and the lens 10 are disposed opposite to each other, so that light can be freely transmitted between the first functional device 30 and the lens 10. The electronic device 1000 of the present application also uses the light guide 40 to transmit the light between the lens 10 and the second functional device 30, so that the first functional device 20 and the second functional device 30 share a lens 10, reducing the number of lenses 10 used. Accordingly, there is no need to open multiple through holes 210 on the housing 200 of the electronic device 1000, which reduces the complexity of designing the housing 200 of the electronic device 1000.

Please refer to FIGS. 15 and 17 together. In another example, the optical module 100 is combined with the housing 200 so that the lens 10 is located on the front of the housing 200 to be used as a front component of a mobile phone. When the housing 200 includes a through hole 210, the through hole 210 is used to install the lens 10. At this time, the electronic device 1000 of the present application arranges the first functional device 20 and the lens 10 oppositely, and uses the light guide 40 to conduct the lens 10 and the second The light between the two functional devices 30 realizes that the first functional device 20 and the second functional device 30 share a lens 10, which reduces the number of lenses 10 used. Accordingly, there is no need to provide multiple lenses on the housing 200 of the electronic device 1000. The through hole 210 reduces the design complexity of the housing 200 of the electronic device 1000. When the optical module 100 is arranged under the display screen and the through hole is opened on the display screen, the first functional device 20 and the second functional device 30 share a lens 10, reducing the number of lenses 10 used, and increasing the screen-to-body ratio of the display screen . Moreover, as mentioned above, the optical module 100 does not need to design a lens 10 with a larger diameter, that is, the diameter of the lens 10 is smaller than that of the previous lens, which can further increase the screen-to-body ratio of the display screen.

In the description of this specification, reference is made to the description of the terms “certain embodiments”, “one embodiment”, “some embodiments”, “exemplary embodiments”, “examples”, “specific examples”, or “some examples” It means that the specific feature, structure, material or characteristic described in combination with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality of" means at least two, for example two, three, unless otherwise specifically defined.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can comment on the above-mentioned embodiments within the scope of the present invention. The embodiments are subject to changes, modifications, substitutions and modifications, and the scope of the present invention is defined by the claims and their equivalents.

Claims

An optical module, characterized in that it comprises:

A lens, the lens includes a first surface, and a microstructure is provided on the first surface of the lens;

The first functional device, the first functional device is arranged on the side where the first surface of the lens is located, and the transmitting and receiving surface of the first functional device is on the first positive side in a plane perpendicular to the optical axis of the lens. The projection is located in the second orthographic projection of the microstructure on the plane;

The second functional device, the second functional device is arranged on the side where the first surface of the lens is located and spaced from the first functional device, and the transmitting and receiving surface of the second functional device is on the first side of the plane The triple orthographic projection and the second orthographic projection are at least partially staggered; and

The light guide is used to guide the light between the lens and the second functional device.
The optical module of claim 1, wherein the microstructures comprise Fresnel patterns.
3. The optical module of claim 2, wherein the center of the Fresnel pattern is aligned with the center of the first functional device.
The optical module according to claim 1, wherein the first functional device is a transmitter, the second functional device is a receiver, and the light guide is used for light emitted from the microstructure Conducted to the receiver; or

The first functional device is a receiver, the second functional device is a transmitter, and the light guide is used to guide light emitted from the transmitter to the microstructure.
The optical module of claim 4, wherein the transmitter comprises: a flashlight, a transmitter unit of a proximity sensor, an infrared light transmitter of a time-of-flight depth camera, and an infrared light transmitter of a structured light depth camera At least one of them.
The optical module according to claim 4, wherein the receiver comprises: a color temperature sensor, a receiving unit of a proximity sensor, an infrared light receiver of a time-of-flight depth camera, an infrared light receiver of a structured light depth camera, At least one of the ambient light sensor and the image sensor.
The optical module according to claim 1, wherein the first vertical distance between the transmitting and receiving surface of the first functional device and the microstructure is smaller than that between the transmitting and receiving surface of the second functional device and the microstructure. The second vertical distance between structures.
The optical module according to claim 1, wherein the light guide comprises:

A stand, the stand is provided with an accommodating space; and

At least two optical path changing elements are provided in the accommodation space, and at least two of the optical path changing elements are used to change a light transmission path so that light can be transmitted between the lens and the second functional device.
The optical module according to claim 8, wherein the bracket includes a first end and a second end opposite to each other, and the first end is provided with a first notch communicating with the containing space, and The second end is provided with a second notch communicating with the accommodating space, the first notch and the second notch are located on opposite sides of the bracket, and the first notch is connected to the first surface of the lens Correspondingly, the second notch corresponds to the second functional device; at least two light path changing elements include a first light path changing element and a second light path changing element,

The first light path changing element is arranged on the inner side wall of the bracket and transmits the light entering from the first notch to the second light path changing element, and the second light path changing element is arranged on the inner side wall of the bracket. On the inner side wall and used to transmit the light from the first optical path changing element from the second gap to the second functional device; or

The second optical path changing element is arranged on the inner side wall of the bracket and is used to transmit the light of the second functional device that enters from the second gap to the first optical path changing element, and the first optical path The changing element is arranged on the inner side wall of the bracket and transmits the light from the second light path changing element from the first notch to the microstructure of the lens.
The optical module according to claim 1, wherein the light guide comprises a light guide fiber, the light guide fiber includes a first surface and a second surface opposite to each other, and the first surface of the light guide fiber The surface is opposite to the microstructure, and the second surface of the light guide fiber is opposite to the receiving and sending surface of the second functional device;

The light guide fiber is used to guide the light emitted from the microstructure to the second functional device along the direction from the first surface to the second surface of the light guide fiber; or

The light guide fiber is used to guide the light emitted from the second functional device to the microstructure along the direction from the second surface to the first surface of the light guide fiber.
An electronic device, characterized in that it comprises:

Shell; and

An optical module, the optical module is combined with the housing, and includes:

A lens, the lens includes a first surface, and a microstructure is provided on the first surface of the lens;

The first functional device, the first functional device is arranged on the side where the first surface of the lens is located, and the transmitting and receiving surface of the first functional device is on the first positive side in a plane perpendicular to the optical axis of the lens. The projection is located in the second orthographic projection of the microstructure on the plane;

The second functional device, the second functional device is arranged on the side where the first surface of the lens is located and spaced from the first functional device, and the transmitting and receiving surface of the second functional device is on the first side of the plane The triple orthographic projection and the second orthographic projection are at least partially staggered; and

The light guide is used to guide the light between the lens and the second functional device.
The electronic device according to claim 11, wherein the microstructures comprise Fresnel patterns.
The electronic device according to claim 12, wherein the center of the Fresnel pattern is aligned with the center of the first functional device.
The electronic device according to claim 11, wherein the first functional device is a transmitter, the second functional device is a receiver, and the light guide is used to conduct light emitted from the microstructure To the receiver; or

The first functional device is a receiver, the second functional device is a transmitter, and the light guide is used to guide light emitted from the transmitter to the microstructure.
The electronic device according to claim 14, wherein the transmitter comprises: a flashlight, a transmitter unit of a proximity sensor, an infrared light transmitter of a time-of-flight depth camera, and an infrared light transmitter of a structured light depth camera. at least one.
The electronic device according to claim 14, wherein the receiver comprises: a color temperature sensor, a receiving unit of a proximity sensor, an infrared light receiver of a time-of-flight depth camera, an infrared light receiver of a structured light depth camera, and an environment At least one of a light sensor and an image sensor.
The electronic device according to claim 11, wherein the first vertical distance between the transmitting and receiving surface of the first functional device and the microstructure is smaller than that between the transmitting and receiving surface of the second functional device and the microstructure. The second vertical distance between.
The electronic device according to claim 11, wherein the light guide comprises:

A stand, the stand is provided with an accommodating space; and

At least two optical path changing elements are provided in the accommodation space, and at least two of the optical path changing elements are used to change a light transmission path so that light can be transmitted between the lens and the second functional device.
The electronic device according to claim 18, wherein the bracket includes a first end and a second end opposite to each other, and the first end is provided with a first notch communicating with the containing space, and the first end Two ends are opened with a second notch communicating with the accommodating space, the first notch and the second notch are located on opposite sides of the bracket, and the first notch corresponds to the first surface of the lens , The second notch corresponds to the second functional device; at least two light path changing elements include a first light path changing element and a second light path changing element,

The first light path changing element is arranged on the inner side wall of the bracket and transmits the light entering from the first notch to the second light path changing element, and the second light path changing element is arranged on the inner side wall of the bracket. On the inner side wall and used to transmit the light from the first optical path changing element from the second gap to the second functional device; or

The second optical path changing element is arranged on the inner side wall of the bracket and is used to transmit the light of the second functional device that enters from the second gap to the first optical path changing element, and the first optical path The changing element is arranged on the inner side wall of the bracket and transmits the light from the second light path changing element from the first notch to the microstructure of the lens.
The electronic device according to claim 11, wherein the light guide comprises a light guide fiber, the light guide fiber includes a first side and a second side opposite to each other, and the first side of the light guide fiber Opposite to the microstructure, the second surface of the light guide fiber is opposite to the transceiver surface of the second functional device;

The light guide fiber is used to guide the light emitted from the microstructure to the second functional device along the direction from the first surface to the second surface of the light guide fiber; or

The light guide fiber is used to guide the light emitted from the second functional device to the microstructure along the direction from the second surface to the first surface of the light guide fiber.