CN214252722U

CN214252722U - Optical module and electronic equipment

Info

Publication number: CN214252722U
Application number: CN202023138035.1U
Authority: CN
Inventors: 胡现坤
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-09-21
Anticipated expiration: 2030-12-22

Abstract

The application provides an optical module and an electronic device. The optical module comprises a reflector group and a light receiver, the light outgoing direction of the reflector group points to the light incoming side of the light receiver, the reflector group is used for changing the direction of the received incident light, so that the changed emergent light enters the light receiver, and the incident light comes from the outside of the optical module.

Description

Optical module and electronic equipment

Technical Field

The application relates to the field of electronics, particularly, relates to an optical module and electronic equipment.

Background

At present, with the higher and higher functional requirements of users on electronic equipment, current electronic equipment is generally configured with a photosensitive component for depth information measurement and auxiliary camera shooting, so that the electronic equipment can meet the requirements of users as much as possible.

However, in order to enable the photosensitive element in the electronic device to collect external light, an opening facing the photosensitive element is usually required to be formed in the electronic device, which imposes many constraints on the layout of the internal components of the electronic device and is difficult to arrange.

SUMMERY OF THE UTILITY MODEL

The application provides an optical module and an electronic device, which are used for solving the technical problems in the related art.

In a first aspect, an embodiment of the present application provides an optical module, including: the light-emitting direction of the reflector group points to the light-in side of the light receiver, the reflector group is used for changing the direction of received incident light so that the changed emergent light enters the light receiver, and the incident light comes from the outside of the optical module.

Optionally, the optical module further includes:

the light ray emitter, the light emergent surface of light ray emitter is towards the outside of optical module, incident light includes the detection light that light ray emitter sent towards the outside forms after being reflected.

In one embodiment of the present application, the light receiver includes:

the light incident side of the lens group faces the light emergent direction of the reflector group;

and the light sensing surface of the light detection unit faces the light outlet side of the lens group.

In an embodiment of the present application, the optical module further includes a barrel, the barrel includes a light incident end and a light exiting end, the reflector set is disposed in the barrel, and an incident surface of the reflector set faces the light incident end to receive the incident light incident from the light incident end; the light emitting end is provided with the light receiver.

In an embodiment of the present application, an angle between the incident light and the incident surface of the reflector group is 45 degrees.

In an embodiment of the present application, an included angle between the incident light and the emergent light of the reflector group is 90 °, 120 ° or 180 °.

In a second aspect, an embodiment of the present application further provides an electronic device, including:

the frame comprises a first opening, and the first opening penetrates to the outside of the frame along the thickness direction of the frame;

the optical module of any of the above embodiments, wherein the optical module is disposed in the electronic device, and an incident surface of the reflector group faces the first opening.

In an embodiment of the present application, the light incident surface of the light receiver is parallel to the thickness direction of the electronic device.

In one embodiment of the present application, in a case where the light emitting surface of the light emitter faces the outside of the optical module, and the incident light includes a reflected light formed after the detection light emitted from the light emitter toward the outside is reflected,

a light emitting surface of the light emitter faces the first opening, and the detection light is emitted to the outside of the electronic device through the first opening; alternatively, the first and second electrodes may be,

the frame further includes: and the light ray emitting surface of the light ray emitter faces the second opening, and the detection light ray is emitted to the outside of the electronic equipment through the second opening.

In an embodiment of the present application, the electronic device further includes an ink layer and a cover plate, the cover plate covers the second opening, and the ink layer is disposed in an area of the cover plate facing the second opening.

The technical scheme provided by the application can at least achieve the following beneficial effects:

the direction of incident light can be changed to optical module's speculum group in this application to make the emergent light after changing to incide to light receiver, so, when configuring optical module to electronic equipment, need not like carrying out daylighting with light receiver towards outside among the correlation technique, can reduce the overall arrangement requirement to optical module, be favorable to electronic equipment's inside overall arrangement.

Drawings

Fig. 1 is a schematic diagram illustrating a structure of an optical module according to an exemplary embodiment.

FIG. 2 is a schematic diagram illustrating another optical module according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating a first arrangement of the mirror groups according to an exemplary embodiment.

Fig. 4 is a schematic diagram illustrating a second arrangement of the mirror groups according to an exemplary embodiment.

Fig. 5 is a schematic diagram illustrating a third arrangement position of the mirror groups according to an exemplary embodiment.

Fig. 6 is a schematic structural diagram of an electronic device shown in accordance with an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and if only "a" or "an" is denoted individually. "plurality" or "a number" means two or more. Unless otherwise specified, "front", "back", "lower" and/or "upper", "top", "bottom", and the like are for ease of description only and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an optical module 100 according to an exemplary embodiment of the present disclosure, including: the light source module comprises a reflector group 1 and a light receiver 2, wherein the light outgoing direction of the reflector group 1 points to the light incoming side of the light receiver 2, the reflector group 1 can change the direction of the received incident light ray a1, and the changed outgoing light ray enters the light receiver 2, and the incident light ray a1 comes from the outside of the optical module 100.

In the present application, the light exiting direction of the reflector assembly 1 can be understood as the exiting direction of the outgoing light ray a2 of the reflector assembly 1.

The optical module 100 may include an ambient light sensor or a camera, and the incident light ray a1 received by the mirror assembly 1 may be external ambient light from the optical module 100; alternatively, in other embodiments, the optical module 100 may also include a distance sensor, and the incident light ray a1 received by the reflector assembly 1 is a light ray reflected by an obstacle (a person or an object) outside the optical module 100 based on the detection light ray emitted by the distance sensor to the outside. Specifically, as shown in fig. 2, the optical module 100 may further include a light emitter 4, a light exit surface of the light emitter 4 may face the outside of the optical module 100 to emit a detection light a4 as shown in fig. 2 toward the outside of the optical module 100, and a reflected light formed by the detection light a4 reflected by an obstacle outside the optical module 100 is an incident light a1 incident on the reflector set 1.

The detection light may include infrared light, which is reflected by the external obstacle and then enters the mirror assembly 1 as an incident light a 1.

If the optical module 100 is installed in an electronic device, the obstacle may be another structure in the electronic device independent of the optical module 100, or may be an object outside the electronic device independent of the optical module 100, such as a human face for recognition.

It can be seen that, in the technical scheme provided in the embodiment of the present application, when the light emitter is configured in the electronic device, the light emitter and the light receiver 2 can cooperate to operate, so that the detection light emitted by the light emitter is reflected by the object to be photographed to form the incident light of the reflector set 1, the reflector set 1 changes the light direction of the incident light, so that the incident light is redirected to form the emergent light to be incident into the light receiver 2, and then the depth detection is performed on the emergent light by the light receiver 2, thereby realizing 3D imaging.

In the above embodiments, as shown in fig. 1-3, the mirror group 1 may include one mirror, and the one mirror may be a plane mirror. Alternatively, in other embodiments, as shown in fig. 4, the one lens may be a right angle prism, which is not limited to this embodiment.

Or, in other embodiments, the reflector group 1 may also include a plurality of lenses, and the direction of the incident light ray a1 can be flexibly changed through the arrangement of the plurality of lenses, so that when the optical module 100 is configured to an electronic device, the light receivers 2 can be flexibly arranged according to the situation in the electronic device, so as to optimize the layout of the electronic device and reduce the influence on the existing arrangement situation as much as possible. Specifically, as shown in fig. 5, the mirror group 1 may include a first plane mirror 11 and a second plane mirror 12, and the incident light ray a1 may be incident on the first plane mirror 11 and incident on the second plane mirror 12 after being reflected by the first plane mirror 11, and form a light ray a2 incident on the light receiver 2 after being reflected by the second plane mirror 12. Of course, in the embodiments provided in the present application, only the mirror group 1 includes the first plane mirror 11 and the second plane mirror 12 for illustration, and in other embodiments, the mirror group 1 may include three or more plane mirrors.

Or in another embodiment, when the mirror group 1 includes a plurality of mirror plates, the plurality of mirror plates may all be right triangular prisms, or may include both prisms and the plane mirror 111, which is not limited in this application.

Based on the technical solution of the present application, the incident light ray a1 can be incident on the mirror assembly 1 at any angle, and as an embodiment, the included angle between the incident light ray a1 and the incident surface of the mirror assembly 1 is 45 °. Thus, the reflector assembly 1 can emit the incident light ray a1 with its direction changed by 90 °, and the light receiver 2 can be disposed at a position far from the position where the incident light ray a1 enters the optical module 100.

Specifically, as shown in fig. 3, assuming that the mirror group 1 only includes the first plane mirror 11, the incident light a1 enters the incident surface of the first plane mirror 11 in an incident direction at 45 ° with respect to the first plane mirror 11, and exits in an exiting direction at 45 ° with respect to the incident surface after being reflected by the first plane mirror 11, so that the incident light a1 and the exiting light a2 form 90 ° with respect to each other, so that the light direction of the incident light is changed by 90 °. Alternatively, still as shown in the embodiment of fig. 4, assuming that the reflector group 1 includes the rectangular prism 13, the incident light penetrates the first surface 131 of the rectangular prism 13 in the incident direction perpendicular to the first surface 131, enters the second surface 132 of the rectangular prism 13 in the incident direction 45 ° with respect to the second surface 132, is reflected by the second surface 132, enters the third surface 133 of the rectangular prism 13 in the emergent direction 45 ° with respect to the second surface 132, and exits in the direction perpendicular to the third surface 133, so that the incident light a1 is 90 ° with respect to the emergent light a2, so that the light direction of the incident light a1 is changed by 90 °.

In addition, in some embodiments, when the mirror assembly 1 is a plane mirror, the incident light ray a1 enters the mirror at an angle of 30 ° with respect to the incident surface of the mirror assembly 1, and is reflected by the mirror and then exits at an angle of 30 ° with respect to the incident surface, such that the incident light ray forms an angle of 60 ° with respect to the reflected light ray.

In still other embodiments, as shown in fig. 5, it is assumed that the mirror group 1 may include a first plane mirror 11 and a second plane mirror 12, an incident light ray a1 enters the incident surface of the first plane mirror 11 at an angle of 45 ° with respect to the incident surface of the first plane mirror 11, and enters the incident surface of the second plane mirror 12 at an angle of 45 ° after being reflected by the first plane mirror 11, and exits the incident surface of the second plane mirror 12 at an angle of 45 ° after being reflected by the second plane mirror 12, such that the incident light ray a1 is 180 ° with respect to the exiting light ray a 2.

Of course, the above description only illustrates that the incident light ray of the reflector assembly 1 forms an angle of 90 ° with the outgoing light ray, and in other embodiments, the angle between the incident light ray a1 of the reflector assembly 1 and the outgoing light ray a2 may be 90 °, 120 ° or 180 °. This makes it possible to selectively place the light receiver 2 at a position in the direction of the outgoing light.

Therefore, the reflector assembly 1 of the optical module 100 provided in the embodiment of the present application can change the direction of the incident light, and make the outgoing light after changing the direction incident on the light receiver, so that when the optical module is configured to the electronic device, it is not necessary to direct the light receiver to the outside for lighting as in the related art, which can reduce the layout requirement on the optical module, and is beneficial to the internal layout of the electronic device.

In an embodiment of the present application, still referring to fig. 1 and fig. 2, the light receiver 2 may include a lens assembly 21 and a light detecting unit 22, a light incident side of the lens assembly 21 faces a light emitting direction of the reflector assembly 1, and a light sensing surface of the light detecting unit 22 faces a light emitting side of the lens assembly 21.

The side of the lens group 21 where the mirror surface for receiving the outgoing light a2 of the mirror group 1 is located is the light incident side of the lens group 21, and the light incident side of the lens group 21 faces the light emergent direction of the mirror group 1, so that the outgoing light a2 of the mirror group 1 enters the lens group 21. The lens assembly 21 may include a plurality of lenses for collecting and filtering the outgoing light ray a2 emitted from the reflector assembly 1, so as to collect and filter the received outgoing light ray a 2. These parasitic lights may be understood as non-imaging light rays.

The light-sensitive surface of the light detecting unit 22 faces the light-emitting side of the lens assembly 21, so that the light processed and transmitted by the lens assembly 21 is incident on the light-sensitive surface of the light detecting unit 22.

It can be seen that, in the technical solution provided in the embodiment of the present application, the lens assembly 21 is arranged to at least condense the emergent light of the reflector assembly 1 and reduce stray light, so that the transmitted light a3 received by the light detection unit 22 and processed by the lens assembly 21 has high-purity required light. Therefore, the light detector provided by the embodiment of the application can improve the detection precision.

In an embodiment of the present application, the optical module may further include a barrel 3, the barrel 3 includes a light incident end and a light exiting end, the reflector assembly 1 is disposed in the barrel 3, and an incident surface of the reflector assembly 1 for receiving incident light may be disposed toward the light incident end of the barrel 3 to receive the incident light incident through the light incident end; a light receiver 2 is arranged at the light-emitting end.

In this embodiment, the two ends of the barrel 3 are through structures, and the two ends are a light inlet end and a light outlet end respectively.

The light receiver 2 can be arranged in the cylinder 3 or outside the cylinder 3. As an embodiment, if the light receiver 2 is the light receiver 2 described in the above embodiment including the lens set 21, the lens set 21 may be disposed in the cylinder 3, and the light detecting unit 22 may be disposed outside the light emitting end and block the light emitting end, so that all the light emitted from the light emitting end is incident on the light detecting surface of the light detecting unit 22. As another embodiment, the lens group 21 and the light detecting unit 22 are both disposed in the barrel 3, and the light detecting unit 22 is closer to the light emitting end.

It can be seen that, in the technical scheme provided in the embodiment of the present application, the reflector group 1 is disposed in the barrel 3, and the incident surface of the reflector group 1 faces the light incident end, and the light emergent end is provided with the light receiver 2. Barrel 3 links together reflector group 1 and light receiver 2 firmly, can also play the effect of keeping apart 3 outside light of barrel simultaneously for light receiver 2 can further improve the detection precision to 1 emergent light of reflector group.

Currently, with the improvement of the requirement of the user on the display effect of the electronic device, the design of the full-screen has become the mainstream development trend of the electronic device.

In the related art, in order to solve the contradiction between the full-screen design and the lighting of the front optical module, a circular hole facing the receiver lens is usually formed on the display panel of the electronic device to realize lighting; or the display panel is processed into a special-shaped structure, such as a water drop screen or a Liuhai screen. And because the round hole that has seted up or the shaping is special-shaped display screen, inevitably can influence display effect and user's visual effect to a certain extent.

In order to solve the above problem, an electronic device 200 shown in fig. 6 is provided in an embodiment of the present application, and specifically referring to fig. 6, fig. 6 is a schematic structural diagram of the electronic device 200 provided in the embodiment of the present application, where the electronic device 200 may include a bezel 201, the bezel may include a first opening 202, and the first opening 202 penetrates to the outside of the bezel along a thickness direction of the bezel; in the optical module 100 according to any of the embodiments, the optical module 100 is disposed in the electronic apparatus 200, and the incident surface of the reflector assembly 1 faces the first opening 202. Wherein, the electronic device 200 may be a mobile phone, a tablet, or a smart wearable electronic device 200.

The frame may be located on a surface where the display screen of the electronic device 200 is located, may also be located on a surface away from the display screen of the electronic device 200, and may also be located on a side surface of the electronic device 200.

The frame is located at the position of the electronic device 200, and is related to the function of the optical module 100 in the electronic device 200, for example, if the optical module 100 is applied to the 3D face unlocking technology, the frame may be disposed on the display screen of the electronic device 200.

In the present embodiment, the light from the outside of the optical module 100 is the light from the outside of the electronic device 200. Based on this, light from outside the optical module 100 can be incident into the optical module through the first opening 202.

It can be seen that, in the technical solution provided in the embodiment of the present application, the optical module 100 is disposed in the electronic apparatus 200, and the incident surface of the reflector assembly 1 faces the first opening 202. Like this, change under the effect that comes from optical module 100 at speculum group 1, make light receiver 2 can be set up in the inside optional position of electronic equipment 200 in a flexible way, need not to process display panel into special-shaped structure, also need not to dig the round hole that is used for light receiver 2 to receive outside light specially on the display screen, only need through the first opening 202 of frame department, alright in order to utilize speculum group 1 to change the direction that comes from the outside incident light of electronic equipment 200, make and to set up light receiver 2's position in a flexible way inside electronic equipment 200, and then make under the prerequisite that does not destroy the comprehensive screen structure of electronic equipment 200, realize the depth information measurement, and the function of supplementary making a video recording. Therefore, by applying the electronic device 200 provided by the embodiment of the application, the problem of abnormal local display of the full screen can be avoided, and the display effect of the full screen is further achieved.

In an embodiment of the present application, the light incident surface of the light receiver 2 is parallel to the thickness direction of the electronic device 200. Under the action of the reflector group 1, under the condition that the incident light and the emergent light form 90 degrees or 180 degrees, the light receiver 2 can be selectively placed in an installation mode that the incident light surface of the light receiver is perpendicular to the length direction of the electronic device 200, or in an installation mode that the incident light surface of the light receiver is perpendicular to the width direction of the electronic device 200, so that the light receiver 2 can select the layout mode inside the electronic device 200 according to actual requirements.

In the embodiment, when the light emitting surface of the light emitter faces the outside of the optical module 100 and the incident light includes the reflected light formed after the detection light emitted by the light emitter facing the outside is reflected, the light emitting surface of the light emitter faces the first opening 202, and the detection light is emitted to the outside of the electronic device 200 through the first opening 202; the frame may further include: the second opening 203 is located on the same side as the first opening 202, the light emitting surface of the light emitter faces the second opening 203, and the detection light is emitted to the outside of the electronic device 200 through the second opening 203. In this embodiment, the opening areas of the first opening 202 and the second opening 203 can be designed to be smaller, so that the appearance is more attractive, meanwhile, the problem of light interference between the detection light emitted from the light emitter and the incident light reflected by the detection light can be avoided, and the detection precision of the optical module 100 can be further improved. In this embodiment, the first opening 202 and the second opening 203 may be disposed at the center of the frame in front, so as to facilitate capturing an obstacle, such as a human face or an object, facing the electronic device 200.

In other embodiments, the opening used by the detection light emitted from the light emitter to the outside of the electronic device 200 and the opening used by the incident light after the detection light is reflected may be the same opening, so that only one opening needs to be disposed at the frame, the electronic device 200 can completely realize the function of the optical module 100 without damaging the entire screen structure, and meanwhile, the appearance of the electronic device 200 can be more beautiful.

In an embodiment of the present application, the electronic device 200 may further include an ink layer and a cover plate, where the cover plate covers the second opening 203, and the ink layer is disposed in an area where the cover plate queries the second opening 203. The ink layer can be an IR ink layer for filtering infrared IR light, so that the light emitted by the light emitter emits infrared light after passing through the IR ink layer.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An optical module, comprising: the light-emitting direction of the reflector group points to the light-in side of the light receiver, the reflector group is used for changing the direction of received incident light so that the changed emergent light enters the light receiver, and the incident light comes from the outside of the optical module.

2. The optical module of claim 1 further comprising:

3. The optical module of claim 1 wherein said light receiver comprises:

4. The optical module of claim 1, further comprising a barrel including a light entrance end and a light exit end, wherein the mirror group is disposed in the barrel with an incident surface facing the light entrance end to receive the incident light incident from the light entrance end; the light emitting end is provided with the light receiver.

5. The optical module of claim 1 wherein the incident light is at an angle of 45 degrees to the incident surface of the mirror group.

6. The optical module of claim 1, wherein the angle between the incident light and the emergent light of the reflector group is 90 °, 120 ° or 180 °.

7. An electronic device, comprising:

the optical module of any of claims 1-6, wherein the optical module is disposed in the electronic device, and an incident surface of the reflector group faces the first opening.

8. The electronic device of claim 7, wherein the light incident surface of the light receiver is parallel to a thickness direction of the electronic device.

9. The electronic device according to claim 7, wherein the optical module further comprises a light emitter, and in a case where a light exit surface of the light emitter faces the outside of the optical module, the incident light includes a reflected light formed by reflecting a detection light emitted from the light emitter toward the outside,

10. The electronic device of claim 9, further comprising an ink layer and a cover plate, wherein the cover plate covers the second opening, and the ink layer is disposed on a region of the cover plate facing the second opening.