CN113740976A

CN113740976A - Optical module and electronic equipment

Info

Publication number: CN113740976A
Application number: CN202010472378.7A
Authority: CN
Inventors: 樊浩
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-12-03
Anticipated expiration: 2040-05-29
Also published as: CN113740976B; WO2021238389A1

Abstract

The application discloses optical module and electronic equipment. The optical module comprises a lens, a first functional device, a second functional device and a light guide. The lens comprises a first surface, and the first surface of the lens is provided with a microstructure. The first functional device is arranged on one side of the first surface of the lens, and a first orthographic projection of a transmitting and receiving surface of the first functional device in a plane perpendicular to the optical axis of the lens is located in a second orthographic projection of the microstructure in the plane. The second functional device is arranged on one side of the first surface of the lens and is spaced from the first functional device, and the third orthographic projection and the second orthographic projection of the transmitting and receiving surface of the second functional device in a plane are at least partially staggered. The light guide is used for conducting light between the lens and the second functional device. The application of the optical module and the electronic equipment realizes that the first functional device and the second functional device share one lens by arranging the light guide, reduces the using quantity of the lenses, and reduces the complexity of the shell design of the electronic equipment.

Description

Optical module and electronic equipment

Technical Field

The present invention relates to the field of electronic devices, and more particularly, to an optical module and an electronic device having the same.

Background

In electronic devices such as mobile phones, IPADs, computers, etc., a plurality of functional devices for emitting and receiving light respectively are often used to realize functions such as photographing and ranging. Generally, each functional device needs to be configured with a lens for transmitting light to assist in realizing the function. Accordingly, in the housing of the electronic device, each lens corresponding to the functional device needs to be provided with a through hole in the housing for mounting the lens in the corresponding through hole when mounting, which increases the complexity of the design of the housing of the electronic device.

Disclosure of Invention

The embodiment of the application provides an optical module and an electronic device. The optical module of the embodiment of the invention comprises a lens, a first functional device, a second functional device and a light guide. The lens comprises a first surface, and a microstructure is arranged on the first surface of the lens. The first functional device is arranged on one side where the first surface of the lens is located, and a first orthographic projection of a transmitting and receiving surface of the first functional device in a plane perpendicular to an optical axis of the lens is located in a second orthographic projection of the microstructure in the plane. The second functional device is arranged on one side of the first surface of the lens and is 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 at least partially staggered with the second orthographic projection. The light guide is used for conducting light between the lens and the second functional device.

The electronic equipment of the embodiment of the application comprises a shell and an optical module. The optical module is combined with the shell. The optical module comprises a lens, a first functional device, a second functional device and a light guide. The lens comprises a first surface, and a microstructure is arranged on the first surface of the lens. The first functional device is arranged on one side where the first surface of the lens is located, and a first orthographic projection of a transmitting and receiving surface of the first functional device in a plane perpendicular to an optical axis of the lens is located in a second orthographic projection of the microstructure in the plane. The second functional device is arranged on one side of the first surface of the lens and is 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 at least partially staggered with the second orthographic projection. The light guide is used for conducting light between the lens and the second functional device. The housing includes a through hole.

The application discloses optical module and electronic equipment set up first function device and lens relatively to utilize the light between light guide conduction lens and the second function device, realized a lens of first function device and second function device sharing, reduce the use quantity of lens, correspondingly, need not to set up a plurality of through-holes on electronic equipment's casing, reduce electronic equipment's casing design's complexity.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of an optical module according to some embodiments of the present disclosure;

FIG. 2 is a perspective view of another perspective of an optical module according to some embodiments of the present disclosure;

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

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

FIG. 5 is a schematic illustration of the position of a lens and a first functional device of an optical module according to certain embodiments of the present application;

FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is a schematic perspective view of a flash of an optical module according to some embodiments of the present disclosure;

FIG. 8 is a perspective view of another perspective of a flash of an optical module according to some embodiments of the present disclosure;

FIG. 9 is a schematic perspective view of a color temperature sensor of an optical module according to certain embodiments of the present application;

FIG. 10 is a schematic perspective view of another perspective of a color temperature sensor of an optical module according to certain embodiments of the present application;

FIG. 11 is a schematic perspective view of a light guide of an optical module according to certain embodiments of the present application;

FIG. 12 is a perspective view of another perspective of a light guide of an optical module according to certain embodiments of the present disclosure;

FIG. 13 is a front view of the light guide of FIG. 11;

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

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

FIG. 16 is a side view of an optical module according to certain 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 Description

The following further describes embodiments of the present invention with reference to the drawings. The same or similar reference numbers in the drawings identify the same or similar elements or elements having the same or similar functionality throughout.

In addition, the embodiments of the present invention described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the embodiments of the present invention, and are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 3, an optical module 100 is provided. 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 face 12, and the first face 12 of the lens 10 has microstructures 122 disposed thereon. The first functional device 20 is arranged on the side of the first face 12 of the lens 10, and a first orthographic projection S1 of the transmitting and receiving face 22 of the first functional device 20 in a plane P1 perpendicular to the optical axis OO1 of the lens 12 is located in a second orthographic projection S2 of the microstructure 122 in the plane P1. The second functional device 30 is disposed on the side of the lens 10 where the first face 12 is located and spaced from the first functional device 20, and the third orthographic projection S3 of the transceiving surface 32 of the second functional device 30 in the plane P1 is at least partially offset from the second orthographic projection S2. The light guide 40 serves to guide light between the lens 10 and the second functional device 30.

The lens 10 is made of a light-transmitting material, such as glass, plastic, etc. The microstructure 122 includes a fresnel pattern, specifically, the fresnel pattern is represented by a plurality of concentric circles from small to large, and the cross section of the fresnel pattern is saw-toothed (as shown in fig. 6). In one example, the microstructures 122 may be concentric circles (shown in fig. 3 and 4) protruding from the first surface 12 of the lens 10. In one example, microstructures 122 can be a plurality of concentric circles (not shown) formed concavely with respect to first side 12 of 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, in which case the light guide 40 is used to guide the light entering the lens 10 from the outside and exiting after being refracted by the microstructures 122 to the receiver. In other embodiments, the first functional device 20 is a receiver, the second functional device 30 is an emitter, and the light guide 40 is configured to guide light emitted from the emitter to the microstructures 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 emitters.

Specifically, the transmitter includes: at least one of a flash, a transmitting unit of a proximity sensor, an infrared light emitter of a time-of-flight depth camera, and an infrared light emitter 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 corresponding relationship in function, and the two devices can be paired to achieve a function. At this time, the light emitted from the emitter is emitted to the outside after passing through the lens 10, and is reflected by the outside object, and then is received and processed by the receiver after passing through the lens 10 to realize the corresponding function. In one example, the transmitter is a flash lamp, and when the receiver is an image sensor, the flash lamp emits light, the light is emitted to the outside through the lens 10 to supplement ambient light, the light is reflected by an external object and can be received by the image sensor after passing through the lens 10, and the image sensor processes the light to form an image. In another example, when the transmitter is an infrared light transmitter of the structured light depth camera and the receiver is an infrared light receiver of the structured light depth camera, the infrared light transmitter of the structured light depth camera emits infrared light, the infrared light is emitted to the outside through the lens 10, the infrared light is reflected back by an external object and can be received by the infrared light receiver of the structured light depth camera after passing through the lens 10, and the infrared light receiver of the structured light depth camera processes the light to measure the distance. In another example, when the transmitter is an infrared light transmitter of the time-of-flight depth camera and the receiver is an infrared light receiver of the time-of-flight depth camera, the infrared light transmitter of the time-of-flight depth camera emits infrared light, the infrared light is emitted to the outside through the lens 10, the infrared light is reflected back by an external object and can be received by the infrared light receiver of the time-of-flight depth camera after passing through the lens 10, and the infrared light receiver of the time-of-flight depth camera processes the light to measure the distance. In another example, when the transmitter is a transmitting unit of a proximity sensor, and the receiver is a receiving unit of the proximity sensor, the transmitting unit of the proximity sensor emits infrared light, the infrared light exits to the outside through the lens 10, the infrared light is reflected by an object of the outside and can be received by the receiving unit of the proximity sensor after passing through the lens 10, and the receiving unit of the proximity sensor processes the light to measure a distance.

In some embodiments, the first functional device 20 and the second functional device 30 do not have a functional correspondence, and both operate independently and perform their respective functions. At this time, the light emitted from the emitter passes through the lens 10 and then exits to the outside to perform the first function. After passing through the lens 10, the external light can be received and processed by the receiver to achieve the second function. In one example, the transmitter is a flash lamp, and when the receiver is a color temperature sensor, light emitted by the flash lamp passes through the lens 10 and then exits the outside to realize a 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, the transmitter is a flash lamp, and when the receiver is an ambient light sensor, light emitted by the flash lamp passes through the lens 10 and then exits the outside to achieve the light supplement function. After passing through the lens 10, the external light can be received and processed by the ambient light sensor to achieve the function of detecting the intensity of the ambient light.

Additionally, the at least partial misalignment of the third orthographic projection S3 with the second orthographic projection S2 may include the following: in one example, the third orthographic projection S3 is completely offset from the second orthographic projection S2, and as shown in FIG. 3, the third orthographic projection S3 is separated from the second orthographic projection S2, i.e., there is no overlap at all. 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 far apart, do not interfere with each other when mounted, and can reduce the thickness in the Z direction, thereby reducing the thickness of the optical module 100.

In another example, the third orthographic projection S3 is partially offset from the second orthographic projection S2 (not shown), and the third orthographic projection S3 intersects the second orthographic projection S2, i.e., there is an overlapping portion and a non-overlapping portion. Because 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 staggered with the second orthographic projection S2, the first functional device 20 and the second functional device 30 are partially overlapped in position, the area of the optical module 100 on the XY plane is small, and the structure is compact.

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 for transmitting 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 one lens 10, the number of the lenses 10 is reduced, accordingly, a plurality of through holes 210 (shown in fig. 17) do not need to be formed in a housing 200 (shown in fig. 17) of the electronic device 1000 (shown in fig. 17), and the complexity of designing the housing 200 of the electronic device 1000 is reduced.

In the related art, the first functional device and the second functional device may be all disposed below the microstructure and opposite to the microstructure, and at this time, a light guide is not required to be disposed, and light transmitted and received by the first functional device and the second functional device directly passes through the lens. However, in order to make the first functional device and the second functional device opposite to the microstructure, and align the first functional device with the center of the fresnel, and align a part of the fresnel pattern outside the center with the second functional device, it is necessary to design a lens with a larger diameter. In the optical module 100 of the present application, the first functional device 20 is disposed opposite to the lens 10, and the light guide 40 is used to transmit light between the lens 10 and the second functional device 30, so that there is no need to design a lens 10 with a larger diameter, that is, the diameter of the lens 10 is smaller than that of the lens with the above design, and the material of the lens 10 can be saved.

In another related art, the first functional device and the second functional device may be all disposed below the microstructure and opposite to the microstructure, and at this time, the light guide does not need to be disposed, and the light transmitted and received by the first functional device and the second functional device directly passes through the lens. In order to make the first functional device and the second functional device both opposite to the microstructure and both aligned with the center of the microstructure, it is not necessary to design one lens with a larger diameter, but two fresnel centers need to be designed to be aligned with the first functional device and the second functional device, respectively, and the design of the two fresnel centers may cause irregularity (asymmetry) in fresnel texture. The optical module 100 of this application sets up first functional device 20 and lens 10 relatively to utilize light guide 40 to conduct the light between lens 10 and the second functional device 30, need not to design two fresnel centers, the anomalous problem of fresnel texture can not appear.

Furthermore, when light passes through a common lens, the corners of the lens become dark and blurred. Taking a glass convex lens as an example, the lens of the convex lens is thick, and the light rays are attenuated by the straight-line transmission part of the light in the glass, so that the corners become dark and fuzzy. In this embodiment, the lens 10 of the optical module 100 is a lens with fresnel patterns, and compared with a common convex lens, the lens 10 only retains a curved surface where light is linearly transmitted in the lens, so that light attenuation is reduced while a large amount of optical material is saved, and the thickness of the lens 10 is thinner while achieving the same light condensing effect as that of the common convex lens, and the phenomena of darkening and blurring of corners are reduced.

Referring to fig. 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 face 22 of the first functional device 20. For example, the first functional device 20 is an emitter, specifically, the first functional device 20 is a flash lamp, and the center of the first functional device 20 refers to the center of a light emitting area of the flash lamp. Alternatively, the first functional device 20 is a receiver, specifically, the first functional device 20 is a color temperature sensor, and then the center of the first functional device 20 refers to the center of the light sensing area of the color temperature sensor.

The alignment of the center of the fresnel pattern with the center of the first functional device 20 can maximize the auxiliary function of the lens 10, for example, when the first functional device 20 is a transmitter, the light emitted from the transmitter can be uniformly diffused outwards from the center of the emitted light, or when the first functional device 20 is a receiver, the externally incident light can be accurately focused on the sensing area of the receiver.

In the present embodiment, a device with a high demand on the lens 10 may be selected as the first functional device 20, a device with a low demand on the lens 10 may be selected as the second functional device 30, and the center of the first functional device 20 may be aligned with the center of the fresnel pattern of the lens 10, thereby maximizing the auxiliary function of the lens 10.

In one example, the first functional device 20 is a flash and the second functional device 30 is a color temperature sensor. The flash lamp needs to use the lens 10 to converge light emitted by the flash lamp and then emit the light to the outside to enhance the light supplementing effect, so that the imaging effect in a dark light environment is improved. And the color temperature sensor detects the color temperature only by receiving light from the outside through the lens 10. In comparison, the flash lamp requires more lens 10 than the color temperature sensor does, and aligning the center of the flash lamp with the center of the fresnel pattern of lens 10 is beneficial to maximize the auxiliary function of lens 10.

In another example, the first functional device 20 is a flash and the second functional device 30 is an ambient light sensor. The flash lamp needs to use the lens 10 to converge light emitted by the flash lamp and then emit the light to the outside to enhance the light supplementing effect, so that the imaging effect in a dark light environment is improved. The ambient light sensor only needs to receive light from the outside through the lens 10 to detect the intensity of ambient light. In comparison, the flash lamp requires more of lens 10 than the ambient light sensor, and aligning the center of the flash lamp with the center of the fresnel pattern of lens 10 is beneficial to maximize the secondary function of lens 10.

Referring to fig. 3, in some embodiments, a first vertical distance d1 between the transceiving surface 22 of the first functional device 20 and the first surface 12 of the lens 10 is smaller than a second vertical distance d2 between the transceiving surface 32 of the second functional device 30 and the first surface 12 of the lens 10.

Specifically, the setting of the first perpendicular distance d1 is determined according to the type of the first functional device 20. For example, when the first functional device 20 is a flashlight, d1 may be set to 0.3 mm. The second vertical distance d2 is set to ensure that the light emitted from the microstructures 122 of the lens 10 has enough space inside the light guide 40 to propagate light, and to ensure that the light inside the light guide 40 changes angle to meet the requirement that the light can be transmitted between the first surface 12 of the lens 10 and the second functional device 30 through the light guide 40.

In other embodiments, a 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 a second vertical distance between the transmitting and receiving surface of the second functional device and the first surface of the lens. That is, the second functional device is located between the first functional device and the lens in the optical axis direction of the lens 10. 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 fig. 1 and fig. 2 again, 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 the microstructures 122, the second surface 14 is provided with the bosses 16, and the bosses 16 increase the thickness of the effective optical portion of the lens 10, so as to better transmit light.

In the following, the first functional device 20 is a flash lamp, the second functional device 30 is a color temperature sensor, and the light guide 40 is used to guide the light emitted from the first functional device 20 to the outside and guide the light emitted from the microstructure 122 of the lens 10 to the second functional device 30.

Referring to fig. 7 and 8, the flashlight 20 includes a light-emitting surface 22 and a mounting surface 26. The light emitting face 22 is disposed opposite the mounting face 26, the light emitting face 22 facing the first face 12 of the lens 10, the light emitting face 22 having a light emission center 24, the light emission center 24 being aligned with the center of the microstructure 122. The mounting surface 26 is far away from the first surface 12 of the lens 10, a plurality of electrical connectors 262 are arranged on the mounting surface 26, the mounting surface 26 is mechanically connected with a circuit board (not shown) through welding or the like, and the electrical connectors 262 are used for realizing the electrical connection of the circuit board and the flash lamp 20.

Referring to fig. 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 disposed opposite to each other, the first surface 31 faces the first surface 12 of the lens 10, and the second 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 may be located at an eccentric position, which is not limited herein. In this embodiment, the second surface 33 is provided with a plurality of electrical connectors 332, the second surface 33 is mechanically connected to a circuit board (not shown) by welding or the like, and the plurality of electrical connectors 332 are used for electrically connecting the circuit board and the color temperature sensor 30.

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

Referring to fig. 11 to 14, in some embodiments, the light guide 40 includes a support 42 and at least two optical path changing elements, which are a first optical path changing element 44 and a second optical path changing element 46, respectively.

The bracket 42 is opened with an accommodating space 420. At least two optical path changing members (a first optical path changing member 44 and a second optical path changing member 46) are disposed in the accommodating space 420 for changing a light transmission path so that light can be transmitted between the lens 10 and the second functional device 30.

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 communicated with the accommodating space 420, the second end 48 is provided with a second notch 482 communicated with the accommodating space 420, the first notch 472 and the second notch 482 are located on two opposite sides of the bracket 42, the first notch 472 corresponds to the first surface 12 of the lens 10, and the second notch 482 corresponds to the second functional device 30.

In some embodiments, a portion of the second functional device 30 extends into the second notch 482 and fits into a portion of the bracket 42, which, on the one hand, can reduce the thickness in the Z-direction, thereby reducing the thickness of the optical module 100. On the other hand, the light can be transmitted between the light guide 40 and the second functional device 30 without leaking out of the second notch 482 and affecting the normal operation of other nearby functional devices.

In one example, when the second functional device 30 is a receiver, the first light path changing member 44 is disposed on the inner sidewall 422 of the support 42 and transmits the light entering from the first gap 472 to the second light path changing member 46, and the second light path changing member 46 is disposed on the inner sidewall 422 of the support 42 and serves to transmit the light from the first light path changing member 44 from the second gap 482 to the second functional device 30.

In another example, when the second functional device 30 is an emitter, the second light path changing element 46 is disposed on the inner sidewall 422 of the support 42 and serves to transmit light of the second functional device 30 entering from the second notch 482 to the first light path changing element 44, and the first light path changing element 44 is disposed on the inner sidewall 422 of the support 42 and transmits light from the second light path changing element 46 from the first notch 472 to the microstructure 122 of the lens 10.

In some embodiments, the first optical path changing element 44 and the second optical path changing element 46 may be a mirror or a reflecting prism, and the first optical path changing element 44 and the second optical path changing element 46 transmit light by reflection of light, so that the wavelength band of the transmitted light is not affected, and when the second functional device 30 is an optical detection sensor, for example, when the second functional device 30 is a color temperature sensor, the determination of the color temperature sensor is not affected by the change of the wavelength band of the light received by the color temperature sensor. The first light path changing member 44 can maximize the light transmission between the lens 10 and the second functional device 30 by designing the placement position and the angle in the receiving space 420 of the holder 42, thereby improving the light utilization efficiency. Further, the inner side wall 422 of the support 42 except the surface where the first and second light

path changing members

44 and 46 are disposed may be coated with black paint to reduce the diffused reflection of light, thereby reducing the influence of the diffused reflection on the normal operation of the second functional device 30.

Referring 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 portion of the light passes through the microstructures 122 of the lens 10 and then refracts into the first notch 472 of the light guide 40. The light incident from the first notch 472 is incident on the reflecting mirror 44. The reflecting surface of the reflecting mirror 44 is inclined at an angle toward the first notch 472, and ensures that the light emitted from the microstructure 122 of the lens 10 and entering the accommodating space 420 from the first notch 472 can be received, and the received light can be reflected to the reflecting mirror 46. The reflecting surface of the reflector 46 faces horizontally toward the second notch 482, ensures that the light reflected by the reflector 44 can be received, and reflects the received light to the area of the second notch 482 corresponding to the color temperature sensor 30. After the light received by the reflector 46 is reflected by the reflector 46 to the area where the second notch 482 corresponds to the color temperature sensor 30, a part of the light enters the photosensitive area 32 of the color temperature sensor 30 and is received by the photosensitive area 32 to realize the detection of the color temperature.

In addition, the flash lamp 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 a picture. The light guide 40 may transmit the light from the outside, which is refracted by the microstructures 122 of the lens 10, to the photosensitive region 32 of the color temperature sensor 30 by reflection, so that the light wavelength and the ratio of the light with different wavelengths are not changed during transmission in the accommodating space 420 due to the avoidance of refraction, and the light received by the color temperature sensor 30 can be reduced to the true outside light to the maximum extent, thereby ensuring the accuracy of color temperature detection.

Referring to fig. 16, in some embodiments, the light guide 40 of the optical module 100 is a light guide fiber 49. The light guiding optical fiber 49 includes a first face 492 and a second face 494 opposite to each other, the first face 492 of the light guiding optical fiber 49 is opposite to the microstructure 122 (the first face 12 of the lens 10), and the second face 492 of the light guiding optical fiber 49 is opposite to the transceiving face 32 of the second functional device 30.

In one example, when the second functional device 30 is a receiver, the light-guiding optical fiber 49 is used to conduct light exiting the microstructure 122 to the second functional device 30 along a direction from the first face 492 to the second face 494 of the light-guiding optical fiber 49. In another example, when the second functional device 30 is an emitter, the light-conducting optical fiber 49 is used to conduct light from the second functional device 30 to the microstructure 122 along the direction from the second face 494 to the first face 492 of the light-conducting optical fiber 49.

Taking the second functional device 30 as an example of the color temperature sensor 30, in some embodiments, when external light enters the lens 10, a portion of the light is refracted into the first surface 492 of the light guiding fiber 49 after passing through the microstructures 122 of the lens 10, and the light is totally reflected at an angle inside the light guiding fiber 49 and is transmitted to the light sensing region 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 the light guide fiber 49, and can transmit the light from the outside refracted by the microstructure 122 of the lens 10 to the photosensitive region 32 of the color temperature sensor 30 through total reflection, so that the wavelength of the light and the proportion of the light with different wavelengths are not changed during transmission in the accommodating space 420 due to the avoidance of refraction, the light received by the color temperature sensor 30 can be reduced to the real outside light to the maximum extent, and the accuracy of color temperature detection is ensured.

Referring to fig. 17, the present application further provides an electronic device 1000. The electronic device 1000 may be a mobile phone, a tablet computer, a smart watch, a head display device, etc., without limitation. The electronic device 1000 includes the optical module 100 and the housing 200 according to any of the above embodiments. The optical module 100 is combined with the housing 200.

The following description will take an example in which the electronic apparatus 1000 is a mobile phone, the first functional device 20 is a flash, and the second functional device 30 is a color temperature sensor. In some embodiments, the optical module 100 is disposed inside the housing 200 and the lens 10 is disposed within the through hole 210. The through hole 210 matches the size of the lens 10, and 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.

Referring to fig. 15, in an example, the optical module 100 is combined with the housing 200 such that the lens 10 is located on the back surface of the housing 200 to be used as a rear component of a mobile phone. When the housing 200 includes the through-hole 210, the through-hole 210 is used to mount the lens 10. At this time, in the electronic device 1000 of the present application, the first functional device 20 is disposed opposite to the lens 10, and the light guide 40 is used 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 one lens 10, the number of the lenses 10 is reduced, and accordingly, the housing 200 of the electronic device 1000 does not need to be provided with a plurality of through holes 210, and the complexity of the design of the housing 200 of the electronic device 1000 is reduced.

Referring to fig. 15 and 17, in another example, the optical module 100 is combined with the housing 200 such that the lens 10 is located on the front surface of the housing 200 for use as a front component of a mobile phone. When the housing 200 includes the through hole 210, the through hole 210 is used for mounting the lens 10, at this time, the electronic device 1000 of the present application sets the first functional device 20 opposite to the lens 10, and transmits light between the lens 10 and the second functional device 30 by using the light guide 40, so that the first functional device 20 and the second functional device 30 share one lens 10, the number of the lenses 10 used is reduced, accordingly, the housing 200 of the electronic device 1000 does not need to be provided with a plurality of through holes 210, and the complexity of the design of the housing 200 of the electronic device 1000 is reduced. When optical module 100 sets up in the display screen below, the through-hole is seted up on the display screen, and first functional device 20 and second functional device 30 share a lens 10, reduce the use quantity of lens 10, can promote the screen of display screen and account for the ratio. 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, so that the screen occupation ratio of the display screen can be further improved.

In the description herein, references to the description of the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, unless specifically limited otherwise.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention, which is defined by the claims and their equivalents.

Claims

1. An optical module, comprising:

a lens comprising a first face, the first face of the lens having microstructures disposed thereon;

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

the second functional device is arranged on one side where the first surface of the lens is located and is spaced from the first functional device, and a third orthographic projection of a transmitting and receiving surface of the second functional device in the plane is at least partially staggered with the second orthographic projection; and

a light guide to conduct light between the lens and the second functional device.

2. 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.

4. The optical module of claim 1 wherein the first functional device is a transmitter and the second functional device is a receiver, the light guide for guiding light exiting the microstructure to the receiver; or

The first functional device is a receiver, the second functional device is an emitter, and the light guide is used for guiding the light emitted from the emitter to the microstructure.

5. The optical module of claim 4 wherein the emitter comprises: at least one of a flash, a transmitting unit of a proximity sensor, an infrared light emitter of a time-of-flight depth camera, and an infrared light emitter 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.

6. The optical module of claim 1 wherein a first vertical distance between the transceiving surface of the first functional device and the microstructure is less than a second vertical distance between the transceiving surface of the second functional device and the microstructure.

7. The optical module of claim 1, wherein the light guide comprises:

the bracket is provided with an accommodating space; and

at least two light path changing elements disposed in the accommodating space for changing a light transmission path so that light can be transmitted between the lens and the second functional device.

8. The optical module of claim 7, wherein the bracket comprises a first end and a second end opposite to each other, the first end defines a first notch communicating with the accommodating space, the second end defines a second notch communicating with the accommodating space, the first notch and the second notch are located on opposite sides of the bracket, the first notch corresponds to the first surface of the lens, and the second notch corresponds to the second functional device; the at least two optical path changing elements include a first optical path changing element and a second optical path changing element,

the first light path changing element is disposed on an inner side wall of the bracket and transmits the light entering from the first gap to the second light path changing element, and the second light path changing element is disposed on an inner side wall of the bracket and transmits the light from the first light 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 for transmitting the light of the second functional device entering from the second notch to the first optical path changing element, and the first optical path changing element is arranged on the inner side wall of the bracket and transmits the light from the second optical path changing element to the microstructure of the lens from the first notch.

9. The optical module of claim 1, wherein the light guide comprises a light guide fiber, the light guide fiber comprising a first surface and a second surface opposite to each other, the first surface of the light guide fiber being opposite to the microstructure, the second surface of the light guide fiber being opposite to the transceiver surface of the second functional device;

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

The light guide optical fiber is used for conducting the light emitted from the second functional device to the microstructure along the direction from the second face to the first face of the light guide optical fiber.

10. An electronic device, comprising:

a housing;

the optical module of any one of claims 1-9 in combination with the housing.