CN112147783A

CN112147783A - Wearable device

Info

Publication number: CN112147783A
Application number: CN202011044213.6A
Authority: CN
Inventors: 汤伟平
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2020-12-29
Anticipated expiration: 2040-09-28
Also published as: CN112147783B

Abstract

The application discloses wearing equipment belongs to optics technical field. The wearing equipment includes: the device comprises a light-emitting module, a lens, a first reflecting unit and a second reflecting unit; the lens comprises a first surface and a second surface which are opposite, the first surface is opposite to the reflecting surface of the first reflecting unit, the second surface is opposite to the light emitting surface of the light emitting module, the second reflecting unit is arranged in the lens, and the reflecting surface of the second reflecting unit faces the reflecting surface of the first reflecting unit. In the embodiment of the application, when wearing equipment was worn, first reflection unit was located the top of lens, and the plane of reflection of first reflection unit this moment is the first surface setting of downward orientation lens promptly to can reduce the appearance of the phenomenon that external environment's light entered people's eye through the plane of reflection of first reflection unit, reduce the stimulation to personnel, and then strengthened wearing equipment's visual effect.

Description

Wearable device

Technical Field

This application belongs to optics technical field, concretely relates to wearing equipment.

Background

With the development of optical technology, the application range of wearable equipment is wider and wider. For example: the current wearable device can be applied to an Augmented Reality (AR) scene, that is, a virtual image (that is, a virtual image) can be formed in the wearable device, but in the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art: the light source in the external environment can also be reflected into human eyes through the reflection unit of the wearable device, so that the stimulation to the human eyes is large, the human eyes are visible, and the visual effect of the current wearable device is poor.

Disclosure of Invention

The purpose of the embodiment of the application is to provide a wearable device, which can solve the problem that the visual effect of the current wearable device is poor.

In order to solve the technical problem, the present application is implemented as follows:

the embodiment of the application provides a wearing equipment, includes: the device comprises a light-emitting module, a lens, a first reflecting unit and a second reflecting unit; the lens comprises a first surface and a second surface which are opposite, the first surface is opposite to the reflecting surface of the first reflecting unit, the second surface is opposite to the light emitting surface of the light emitting module, the second reflecting unit is arranged in the lens, and the reflecting surface of the second reflecting unit faces the reflecting surface of the first reflecting unit;

when the wearable device is worn, the second surface is a lower surface of the lens, the light-emitting module is located below the lens, and the first reflection unit is located above the lens; light rays emitted by the light emitting module enter the lens through the second surface to be transmitted, are transmitted to the first reflection unit after being emitted from the first surface, enter the lens through the first surface after being reflected by the first reflection unit, are transmitted to the second reflection unit, are emitted from the third surface of the lens after being reflected by the second reflection unit, the third surface is adjacent to the first surface, the third surface is adjacent to the second surface, and the light rays are emitted from the position within the visual angle range of the wearable device.

In this application embodiment, when wearing equipment was worn, first reflection unit was located the top of lens, and the plane of reflection of first reflection unit this moment is the first surface setting of downward orientation lens promptly to can reduce the appearance of the phenomenon that external environment's light entered into people's eye through the plane of reflection of first reflection unit, reduce the stimulation to personnel, and then strengthened wearing equipment's visual effect.

Drawings

Fig. 1 is a schematic structural diagram of a wearable device provided in an embodiment of the present application;

fig. 2 is a second schematic structural diagram of a wearable device according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a lens of a wearable device according to an embodiment of the present disclosure;

fig. 4 is a second schematic structural diagram of a lens in a wearable device according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

A wearable device and a near-eye display device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a wearable device provided in an embodiment of the present application, and as shown in fig. 1, the wearable device includes: the light emitting module 20, the lens 10, the first reflecting unit 30 and the second reflecting unit 40; the lens 10 includes a first surface 11 and a second surface 12 opposite to each other, the first surface 11 is opposite to the reflection surface of the first reflection unit 30, the second surface 12 is opposite to the light emitting surface of the light emitting module 20, the second reflection unit 40 is disposed in the lens 10, and the reflection surface of the second reflection unit 40 faces the reflection surface of the first reflection unit 30;

when the wearable device is worn, the second surface 12 is a lower surface of the lens 10, the light emitting module 20 is located below the lens 10, and the first reflecting unit 30 is located above the lens 10; the light emitted by the light emitting module 20 enters the lens 10 through the second surface 12 to be transmitted, and is transmitted to the first reflecting unit 30 after being emitted from the first surface 11, and is reflected by the first reflecting unit 30, and then enters the lens 10 through the first surface 11 to be transmitted to the second reflecting unit 40, and is emitted from the third surface 13 of the lens 10 after being reflected by the second reflecting unit 40, the third surface 13 is adjacent to the first surface 11, the third surface 13 is adjacent to the second surface 12, and the position where the light is emitted is within the range of the viewing angle of the wearable device.

Note that the arrow direction indicated by a in fig. 1 indicates a propagation path of light in the wearable device.

The working principle of the embodiment of the application can be referred to as the following expression:

when the wearing device is worn, see fig. 1, light in the external environment (mainly light emitted by the light source 70 in the external environment, and the light source 70 may be sunlight or light) generally irradiates from top to bottom, that is, light in the external environment mainly irradiates the lower part of the lens 10, and the light emitting module 20 is located below the lens 10, and light in the external environment irradiates the light emitting module 20, because the light emitting module 20 has a small reflection effect on the light, so that the quantity of light reflected to the human eyes 50 through the light emitting module 20 is small, and thus, the stimulation to the human eyes 50 can be reduced. Thereby enhancing the visual effect of the wearable device.

It should be noted that, as an alternative embodiment, the light emitting module 20 includes a screen, and the screen includes a light absorbing unit, and the screen faces the second surface.

Optionally, in a case that the screen is a Liquid Crystal Display (LCD), the light absorption unit is a polarizing plate, the polarizing plate is made of a light absorption material and has a certain light absorption effect, at this time, first light (the first light is light in the same direction as a transmission axis of the polarizing plate) included in light emitted by the light emitting module 20 is emitted from the polarizing plate and enters the lens 10 through the second surface 12, and external light enters the lens 10 and is absorbed by the light absorption unit after being emitted from the second surface 12, so that interference of external light to human eyes is reduced.

Optionally, the panel is an organic light-Emitting Diode (OLED) display panel, and the light absorbing unit is a polarizing element and a phase retardation element, where the polarizing element is close to the second surface 12 relative to the phase retardation element. At this time, light emitted by the light emitting module 20 passes through the phase delay element and the polarization element to form polarized light and transmits the polarized light to the second surface 12, the polarized light enters the lens 10 through the second surface 12, external light enters the polarization element from the second surface 12 through the lens 10 to form first polarized light, the polarized light passes through the phase delay element to form elliptically polarized light, the elliptically polarized light enters the phase delay element after being reflected by other parts of the light emitting module 20 to form second polarized light, and the vibration direction of the second polarized light is opposite to that of the first polarized light, so that the second polarized light cannot pass through the polarization element and is absorbed by the polarization element, and interference of the external light to human eyes is reduced.

Optionally, the phase retardation element is a quarter-glass, an optical axis of the quarter-glass is at 45 degrees to a transmission axis of the polarization element, and at this time, light passing through the quarter-glass is circularly polarized light.

Like this, because liquid crystal display includes the extinction unit that is used for absorbing external environment's light source 70's reflection light, and the extinction unit is the polarizing plate, organic light emitting diode display includes polarizing element and the phase delay component that is used for absorbing external environment's light source 70's reflection light, and the phase delay component is the quarter slide, light that light source 70 in the external environment sent shines to on the light emitting module 20, thereby can absorb at least part of light, and then can reduce the light in the reflection further people's eye 50, further reduce the stimulation and the injury of light source 70 in the external environment to people's eye 50.

In addition, because the position that light jetted out is in wearing equipment's visual angle scope, like this, when the user was wearing equipment, can guarantee that above-mentioned light can mostly shine into people's eye 50 to can make the content that the light that the user can clear and complete observation send out optical module 20 presented.

In addition, when wearing equipment is applied to under the AR scene, the light that sends of luminous module 20 can transmit second surface 12 and propagate in lens 10, transmit to first reflection unit 30 and form first reflection light after above-mentioned light jets out from first surface 11, first reflection light gets into in lens 10 through first surface 11, and first reflection light meets second reflection unit 40 and forms second reflection light, second reflection light shines and gets into people's eye 50, and like this, can form the virtual image in people's eye 50, and this virtual image is located the position that second reflection unit 40 is located promptly in people's eye's position, the content of this virtual image can be the content that the light that sends appears on luminous module 20.

As an alternative embodiment, referring to fig. 1, the lens 10 further includes a fourth surface 14, the fourth surface 14 is disposed opposite to the third surface 13, the fourth surface 14 is respectively adjacent to the first surface 11 and the second surface 12, and the third surface 13 and the fourth surface 14 are both arc-shaped surfaces; referring to fig. 3, the third surface 13 is recessed toward a first direction, and the fourth surface 14 is recessed toward a second direction, which are opposite directions.

Wherein, the third surface 13 and the fourth surface 14 are both arc-shaped surfaces, the third surface 13 is concave towards the first direction, and the fourth surface 14 is concave towards the second direction, for example: referring to fig. 3, the first direction is a direction B in fig. 3, and the second direction is a direction C in fig. 3, so that the third surface 13 and the fourth surface 14 may constitute a concave lens. When the line of sight of the human eye 50 can be projected on either the third surface 13 or the fourth surface 14, the lens 10 can be used as a myopic lens (which may also be referred to as a corrective vision lens).

In this way, the lens 10 in the present embodiment combines the functions of the spectacles for near vision and the AR function (for concrete description, refer to the corresponding description in the above embodiments), and the versatility of the functions of the wearable device is enhanced, that is, the wearable device in the present embodiment is an integrated device, and compared with the way of separately providing the AR optical lens and the vision correction lens, the present embodiment can reduce the volume and thickness of the wearable device (mainly the thickness of the lens 10).

It should be noted that, the radians of the third surface 13 and the fourth surface 14 can be determined to be corresponding values according to different users, that is, the corresponding radians can be selected according to different degrees of corrected vision of the eyes of the users.

As another alternative, referring to fig. 1, the lens 10 further includes a fourth surface 14, the fourth surface 14 is disposed opposite to the third surface 13, the fourth surface 14 is respectively adjacent to the first surface 11 and the second surface 12, and both the third surface 13 and the fourth surface 14 are arc-shaped surfaces; referring to fig. 4, the third surface 13 is recessed toward the second direction, the fourth surface 14 is recessed toward the first direction, and the first direction and the second direction are opposite directions.

It should be noted that, referring to fig. 4, the first direction is a direction B in fig. 4, and the second direction is a direction C in fig. 4.

The main differences between this embodiment and the above-described embodiments are: in the present embodiment, the third surface 13 and the fourth surface 14 may constitute a convex lens. When the line of sight of the human eye 50 can be projected on either the third surface 13 or the fourth surface 14, the lens 10 can be used as a distance vision lens (also referred to as a corrective vision lens). Other expressions may be referred to corresponding expressions in the above embodiments.

The position relationship between the first reflection unit 30 and the first surface 11 is not specifically limited, and as an alternative embodiment, the reflection surface of the first reflection unit 30 and the first surface 11 may be spaced apart from each other.

As another alternative, the first surface 11 is attached to the reflective surface of the first reflective element 30. Like this, can reduce the volume of whole wearing equipment, simultaneously with first surface 11 with the mode that the plane of reflection of first reflection component 30 set up at an interval compares, can also reduce the appearance of the phenomenon that light shines into external environment through the clearance between the plane of reflection of first surface 11 and first reflection component 30 to it is better to make light shine into the plane of reflection of first reflection component 30 through first surface 11.

As another alternative, the reflecting surface of the first reflecting unit 30 is fixedly connected to the reflecting surface of the first surface 11. In this way, the strength of the connection between the first reflecting unit 30 and the first surface 11 can be enhanced, and at the same time, the volume occupied by the whole wearable device can be reduced.

It should be noted that the connection manner between the first reflection unit 30 and the first surface 11 is not specifically limited, for example: as an alternative embodiment, the first reflecting unit 30 and the first surface 11 may be adhered by a transparent adhesive, which allows light to pass through.

As another alternative embodiment, the first reflecting unit 30 is fixed on the first surface 11 through a plating process. Thus, the coupling strength of the first reflecting unit 30 to the first surface 11 can be further enhanced, and at the same time, the first reflecting unit 30 is plated on the first surface 11, the overall thickness of the first reflecting unit 30 and the first surface 11 can be reduced, thereby enhancing the reflecting effect on light.

The first reflecting unit 30 may be referred to as a mirror or a reflective coating film when it is plated on the first surface 11.

In addition, as an optional implementation manner, the light emitting surface of the light emitting module 20 and the second surface 12 may be disposed at an interval, and at this time, the second surface 12 may be referred to as a coupling surface of the light emitting module 20; of course, a light guide device may be disposed between the light emitting module 20 and the second surface 12.

As another optional implementation manner, the second surface 12 is attached to a light emitting surface of the light emitting module 20. Therefore, the size of the whole wearable device can be reduced, and meanwhile, compared with the way that the second surface 12 and the light emitting surface of the light emitting module 20 are arranged at intervals, the phenomenon that light is reflected into the external environment through the gap between the second surface 12 and the light emitting surface of the light emitting module 20 can be reduced, so that the effect that the light irradiates into the lens 10 through the second surface 12 is better.

It should be noted that, the second surface 12 is attached to the light emitting surface of the light emitting module 20, and the first surface 11 is attached to the reflective surface of the first reflective element 30, which can be selected at the same time, or only one of the above embodiments can be selected, and the details are not limited herein.

As an alternative embodiment, referring to fig. 1, the wearable device further includes a lens 80, the lens 80 is disposed between the second surface 12 and the light emitting module 20, and a major axis of the lens 80 is perpendicular to the second surface 12. Thus, since the light emitting module 20 can emit light toward various angles, the light can be irradiated into the lens 10 perpendicular to the second surface 12 after passing through the lens 80 and can be propagated in the lens 10.

That is, since the main axis of the lens 80 is perpendicular to the second surface 12, it can be ensured that the light emitted from the light emitting module 20 is incident into the lens 10 perpendicular to the second surface 12, and further ensured that most of the light is transmitted onto the first surface 11 and is reflected by the first reflecting unit 30, i.e. the amount of light finally reflected into the human eye 50 is large.

The lens 80 may be referred to as a lens group or the like.

As an alternative embodiment, the second surface 12 may be a curved surface.

As another alternative, referring to fig. 1 and 2, the second surface 12 is planar. In this way, it can be further ensured that most of the light emitted from the light emitting module 20 can be transmitted to the first surface 11 through the second surface 12, and reflected by the first reflecting unit 30, i.e. it is ensured that the amount of light finally reflected into the human eye 50 is large.

As an alternative embodiment, the reflecting surface of the second reflecting unit 40 has a first angle with respect to the second surface 12, and the first angle is greater than 15 degrees and less than 42 degrees or greater than 48 degrees and less than 75 degrees. Thus, the reflection surface of the second reflection unit 40 has a better reflection effect on the light, so that the human eyes 50 can receive the light within the above angle range, that is, the user can observe the content of the light emitted from the light emitting module 20 within the above angle range.

It should be noted that, when the second surface 12 is a plane, the second surface 12 is parallel to a horizontal plane where the light emitting module 20 is located, and the first angle can also be understood as: the angle between the reflective surface of the second reflective unit 40 and the light emitting module 20.

The shape of the reflection surface of the first reflection unit 30 is not limited herein, and for example: as an alternative embodiment, the reflecting surface of the first reflecting unit 30 may be a plane.

As another optional implementation manner, the reflection surface of the first reflection unit 30 is a curved surface, and a bending direction of the curved surface deviates from the light emitting surface of the light emitting module 20. Thus, since the reflecting surface of the first reflecting unit 30 is a curved surface, when the light irradiates on the first reflecting unit 30, the light can better return to the lens 10, and further better irradiate on the second reflecting unit 40, and finally irradiate in the human eye 50.

Here, referring to fig. 1, the bending direction of the curved surface may refer to a D direction in fig. 1.

In addition, the position of the second reflecting unit 40 disposed in the lens 10 can be referred to as follows:

as an alternative embodiment, the second reflecting unit 40 is disposed close to the second surface 12. I.e. the distance between the second reflecting unit 40 and the second surface 12 is smaller than the distance between the second reflecting unit 40 and the first surface 11.

As another alternative, the second reflecting unit 40 is disposed near the first surface 11. I.e. the distance between the second reflecting unit 40 and the second surface 12 is larger than the distance between the second reflecting unit 40 and the first surface 11.

The working principle of the two embodiments can be seen in the following expression:

when the wearing device is worn on a human body, the human eye 50 is generally in the same horizontal plane as the center position of the lens 10 (i.e., the middle position between the first surface 11 and the second surface 12). The propagation path of the light ray can be specifically referred to the path indicated by arrow a in fig. 1, that is, the arrows indicated by a in fig. 1 indicate the propagation paths of the light ray.

In the two embodiments, since the second reflection unit 40 is disposed close to the first surface 11 or the second surface 12, that is, the second reflection unit 40 is not disposed at an intermediate position between the first surface 11 and the second surface 12, a virtual image formed by the second reflection unit 40 (the specific imaging principle can be referred to as corresponding expression in the above embodiments) is also not located at an intermediate position between the first surface 11 and the second surface 12, and thus, the virtual image is not present right in front of the human eye 50, and the line of sight of the human eye 50 is not blocked, so that the visual effect of the wearable device is enhanced.

The virtual image may correspond to content presented by the light emitting module 20, for example: the light that sends out optical module 20 is an image, and then above-mentioned virtual image can be above-mentioned image, like this, has realized the AR function in wearing equipment promptly.

In addition, no matter whether the light emitting module 20 emits light or not, since the second reflecting unit 40 is disposed close to the first surface 11 or the second surface 12, that is, the second reflecting unit 40 is not located right in front of the human eye 50 (the right in front of the human eye 50 is generally the middle position between the first surface 11 and the second surface 12), that is, the second reflecting unit 40 does not block the line of sight of the human eye 50, thereby further enhancing the visual effect of the wearable device.

The assembly manner of the second reflection unit 40 in the lens 10 is not limited herein, for example: as an alternative embodiment, the lens 10 includes a first sub-lens and a second sub-lens that are adapted to each other, the second reflection unit 40 is disposed between the first sub-lens and the second sub-lens that are spaced apart from each other, and then the first sub-lens and the second sub-lens are abutted, so that the third lens 40 can be packaged in the lens 10.

As another alternative, the lens 10 may be provided with a receiving hole, and the second reflecting unit 40 may be embedded in the receiving hole, so that the second reflecting unit 40 may also be referred to as a pinhole mirror.

Thus, with the above two embodiments, the manner in which the second reflecting unit 40 is disposed in the lens 10 can be further diversified and activated.

In addition, the number of the second reflection units 40 is not limited herein, for example: as an alternative embodiment, the number of the second reflection units 40 is multiple, and a plurality of the second reflection units 40 are distributed in an array. In this way, the reflection area of the second reflection unit 40 can be increased, thereby increasing the visible range and the visible angle of the user to the virtual image.

It can also be understood that: the second reflected light (see the above description) reflected by the second reflecting unit 40 is irradiated into the human eye 50, so that a smaller eyebox (eye movement range) can be formed; meanwhile, since the plurality of second reflection units 40 are included and the plurality of second reflection units 40 are distributed in an array, the smaller eyebox can be expanded into a larger eyebox. Namely, the visual range and the visual angle of the user are enlarged.

As an alternative embodiment, referring to fig. 2, the wearable device further includes a housing 60, the housing 60 is provided with a first groove 61 and a second groove 62 opposite to each other, the first surface 11 is located in the first groove 61, and forms a first accommodating space with the first groove 61, the first reflection unit 30 is disposed in the first accommodating space, the second surface 12 is located in the second groove 62, the second surface 12 and the second groove 62 form a second accommodating space, and the light emitting module 20 is disposed in the second accommodating space.

In this way, the housing 60 can fix the lens 10, the first reflective unit 30 and the light emitting module 20, and meanwhile, the first surface 11 of the lens 10 and the first groove 61 form a first accommodating space, and the first reflective unit 30 is disposed in the first accommodating space; the second surface 12 of the lens 10 and the second groove 62 form a second accommodating space, and the light emitting module 20 is disposed in the second accommodating space, so that the light emitting module 20 and the first reflecting unit 30 can be prevented from directly contacting with the external environment, and the waterproof and dustproof effects can be achieved. In addition, the integrity of the wearable device can be enhanced (namely, the connection among all parts of the wearable device is tighter), the appearance of the whole wearable device is improved, and the user experience is enhanced.

In addition, when the wearable device is AR glasses, the housing 60 may also be referred to as a frame or a lens holder, or the like.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A wearable device, comprising: the device comprises a light-emitting module, a lens, a first reflecting unit and a second reflecting unit; the lens comprises a first surface and a second surface which are opposite, the first surface is opposite to the reflecting surface of the first reflecting unit, the second surface is opposite to the light emitting surface of the light emitting module, the second reflecting unit is arranged in the lens, and the reflecting surface of the second reflecting unit faces the reflecting surface of the first reflecting unit;

2. The wearable device according to claim 1, further comprising a lens disposed between the second surface and the light emitting module, wherein a major axis of the lens is perpendicular to the second surface.

3. The wearable device according to claim 1, wherein the light emitting module further comprises a screen comprising a light absorbing unit, the screen facing the second surface.

4. The wearable device of claim 1, wherein the second surface is planar.

5. The wearable device according to claim 4, wherein the reflective surface of the second reflective unit has a first angle with respect to the second surface, the first angle being greater than 15 degrees and less than 42 degrees or the first angle being greater than 48 degrees and less than 75 degrees.

6. The wearable device of claim 1, wherein the reflection surface of the first reflection unit is a curved surface, and a bending direction of the curved surface deviates from a light emitting surface of the light emitting module.

7. The wearable device of claim 1, wherein the second reflective unit is disposed proximate to the second surface.

8. The wearable device of claim 1, wherein the second reflective unit is disposed proximate to the first surface.

9. The wearable device according to claim 1, wherein the second surface is attached to a light emitting surface of the light emitting module, and/or the first surface is attached to a reflecting surface of the first reflecting element.

10. The wearable device according to claim 1, further comprising a housing, wherein the housing is provided with a first groove and a second groove which are opposite to each other, the first surface is located in the first groove and forms a first accommodating space with the first groove, the first reflection unit is disposed in the first accommodating space, the second surface is located in the second groove, the second surface and the second groove form a second accommodating space, and the light emitting module is disposed in the second accommodating space.