CN111562674A - Optical Display Components and Smart Wearable Devices - Google Patents

Abstract

The application discloses optical display subassembly and intelligent wearing equipment. The optical display assembly comprises an optical machine module, an optical transmission element and an optical path changing element. The optical-mechanical module is used for projecting light rays carrying pictures. The light transmission element comprises a first face, a second face and a third face, the first face is back to back with the second face, the third face is connected with the first face and the second face, the light transmission element is used for receiving the light at the first face and reflecting the light inside the first face and the second face, and the first face and the light outlet of the optical machine module form a first included angle. The light path changing element is arranged between the light transmission element and the optical machine module, is used for receiving light rays and projecting the light rays to the first surface, the light rays are emitted from the first surface, and the distance between the center of the emitting position of the light rays on the first surface and the third surface is within a preset range. This application utilizes the light path to change the transmission direction of the light that the ray apparatus module sent, and the user can watch the projected picture of ray apparatus module with best visual angle.

Description

Optical Display Components and Smart Wearable Devices

technical field

The present application relates to the technical field of optical imaging, and in particular, to an optical display assembly and a smart wearable device.

Background technique

With the development of science and technology, smart wearable devices, such as AR glasses or VR glasses, have gradually entered people's lives. People usually wear smart wearable devices to watch the pictures projected by the optomechanical modules on both sides to realize virtual reality or augmentation. Reality. Since the human head is usually narrow in the front and wide in the back, after wearing the smart wearable device, the two sides of the smart wearable device will be spread apart, making it impossible for people to view the projected image of the optomechanical module from the best perspective.

SUMMARY OF THE INVENTION

Embodiments of the present application provide an optical display assembly and a smart wearable device.

Embodiments of the present application provide an optical display assembly, the optical display assembly includes: an optical-mechanical module, an optical transmission element, and an optical path changing element. The optical-mechanical module is used for projecting light that carries a picture; the optical transmission element includes a first surface, a second surface and a third surface, the first surface is opposite to the second surface, and the third surface connecting the first surface and the second surface, the light transmission element is configured to receive the light on the first surface and internally reflect the light between the first surface and the second surface, the The first surface and the light-emitting surface of the optical-mechanical module form a first included angle; and the optical path changing element is arranged between the optical transmission element and the optical-mechanical module, and the optical path changing element is used for receiving The light is projected to the first surface, the light is emitted from the first surface, and the light is between the center of the exit position of the first surface and the third surface distance is within the predetermined range.

In some embodiments, the distance between the center of the exit position of the light on the first surface and the third surface is equal to the distance between the central axis of the light transmission element and the third surface .

In some embodiments, the light rays exit perpendicularly relative to the first surface.

In some embodiments, the distance between the center of the exit position of the light on the first surface and the third surface is smaller than the distance between the central axis of the light transmission element and the third surface .

In some embodiments, the light exits at a second angle relative to the first surface.

In some embodiments, the light transmission element is used to project the light from the first surface to the human eye, and the center of the exit position of the light on the first surface is located where the human eye is located. within the orthographic projection range of the first surface.

In some embodiments, the light transmission element is used to project the light from the first surface to the human eye, and the light is in the center of the exit position of the first surface and the optomechanical module are located on both sides of the orthographic projection, respectively.

In some embodiments, the optical path changing element includes an incident surface and an exit surface, the incident surface is parallel to the light exit surface, and the light rays exit from the exit surface and enter the first surface perpendicularly.

In some embodiments, the light path changing element includes an incident surface and an exit surface, the incident surface is parallel to the light exit surface, and the light rays exit from the exit surface and enter the first surface obliquely.

In some embodiments, the optical path changing element is combined with the opto-mechanical module, and the optical path changing element and the opto-mechanical module are combined through a common carrier, and the optical path changing element is combined with the optical-mechanical module. Machine module spacing or fit.

Embodiments of the present application further provide a smart wearable device, where the smart wearable device includes: a mirror frame, a temple, and the optical display assembly described in any of the foregoing embodiments. The optical-mechanical module and the optical path changing element are arranged in the temple, and the light transmission element is arranged in the mirror frame.

In some embodiments, the number of the optical display components is two, the two optical-mechanical modules and the two optical path changing elements are respectively disposed in the two temples, and the two optical The transmission elements are respectively arranged in the two said mirror frames.

In the optical display assembly and the smart wearable device of the present application, the light-emitting surface of the optical-mechanical module and the first surface of the optical path transmission element are arranged at a first angle, so that the optical display assembly can be more easily matched with the head of a person with a narrow front and a wide back. . At the same time, the optical display assembly and the smart wearable device of the present application utilize an additional optical path changing element between the optomechanical module and the optical path transmission element, and use the optical path changing element to change the transmission direction of the light emitted by the optomechanical module and then transmit the light from the optical path. One end of the first surface of the element enters, and the light is transmitted through the light transmission element and exits from the other end of the first surface, and the distance between the center of the exit position and the third surface is within a predetermined range, so that the user can use The best viewing angle to watch the picture projected by the optomechanical module.

Additional aspects and advantages of embodiments of the present application will be set forth, in part, in the following description, and in part will be apparent from the following description, or learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of a smart wearable device according to some embodiments of the present application;

2 is a schematic structural diagram of an optical display assembly according to some embodiments of the present application;

3 is a schematic structural diagram of an optical display assembly according to some embodiments of the present application;

4 is a schematic structural diagram of an optical display assembly according to some embodiments of the present application;

5 is a schematic structural diagram of a smart wearable device according to some embodiments of the present application;

6 is a schematic structural diagram of an optical display assembly according to some embodiments of the present application;

7 is a schematic structural diagram of an optical display assembly according to some embodiments of the present application;

8 is a schematic structural diagram of a smart wearable device according to some embodiments of the present application;

FIG. 9 is a schematic structural diagram of an optical display assembly according to some embodiments of the present application.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the embodiments of the present application, and should not be construed as limitations on the embodiments of the present application.

Referring to FIG. 1 , an embodiment of the present application provides a smart wearable device 1000 , and the smart wearable device 1000 may be smart AR glasses, smart AR goggles, smart AR helmet, smart AR headband, smart VR glasses, smart VR goggles, smart AR VR helmets, or smart VR headsets, etc. The embodiments of the present application are described by taking the smart wearable device 1000 as smart AR glasses as an example.

Specifically, referring to FIG. 2 , the smart wearable device 1000 includes an optical display assembly 100 , a frame 200 and a temple 300 . In one embodiment, the number of the mirror frames 200 and the temples 300 is two, the two mirror frames 200 are in one-to-one correspondence with the two temples 300 , and each temple 300 is connected to the outside of the corresponding mirror frame 200 .

The optical display assembly 100 includes an optomechanical module 10 , a light transmission element 20 and an optical path changing element 30 . The optical-mechanical module 10 and the optical path changing element 30 are arranged in the temple 300 , and the light transmission element 20 is arranged in the mirror frame 200 . The optical-mechanical module 10 is used for projecting the light carrying the picture. The optical transmission element 20 includes a first surface 21, a second surface 23 and a third surface 25, the first surface 21 is opposite to the second surface 23, and the third surface 25 connects the first surface 21 and the second surface 23. The optical transmission element 20 is used to receive light on the first surface 21 and reflect the light between the first surface 21 and the second surface 23 . The first surface 21 and the light-emitting surface 11 of the optomechanical module 10 form a first included angle γ. The optical path changing element 30 is arranged between the optical transmission element 20 and the optical-mechanical module 10 . The optical path changing element 30 is used for receiving light and projecting the light to the first surface 21 . The distance between the center of the exit position of the face 21 and the third face 25 is within a predetermined range.

The number of optical display assemblies 100 may be one or two. When the number of optical display assemblies 100 is one, the optical-mechanical module 10 and the optical path changing element 30 are arranged in one of the temples 300, and the optical transmission element 20 is arranged in one of the temples 300. Inside the frame 200 corresponding to the temple 300 . At this time, the smart wearable device 1000 can provide a virtual image or an augmented reality image for the user's vision on one side, and the image projected by the optomechanical module 10 will not enter the user's visual range on the other side, so as to avoid affecting the user's vision in certain situations. . For example, in a specific situation, the user does not want the virtual image to be blocked in front of one side of the field of vision when the user is driving or flying a vehicle such as an airplane.

When the number of the optical display assemblies 100 is two, the two optical-mechanical modules 10 and the two optical path changing elements 30 are respectively arranged in the two temple legs 300 , and the two optical transmission elements 20 are respectively arranged in the two mirror frames 200 . . At this time, the smart wearable device 1000 can provide a virtual picture or an augmented reality picture for the user's vision on both sides, so as to improve the user's immersion in a specific usage scenario, such as a game.

Specifically, the optomechanical module 10 includes a structural component, a display screen, and a lens. The display screen and the lens are both arranged in the structural component, and the structural component is used to provide protection for the display screen and the lens, such as protection against dust, water, and drop. Wait. The display screen is used to display the image, and the lens is arranged in front of the display screen to concentrate or diffuse the light emitted from the display screen. The optical-mechanical module 10 is used for projecting the light carrying the picture, that is to say, the optical-mechanical module 10 is used for amplifying and outputting the image displayed on the display screen. It should be pointed out that the light projected by the optical-mechanical module 10 into the optical transmission element 20 is located within a specified range on the first surface 21, for example, the size of the specified range (when the specified range is a rectangle, the size is the width; when The specified range is a circle, and the size is the radius) can be less than or equal to 5mm, or less than or equal to 10mm, or less than or equal to 15mm, etc.

The first included angle γ can be an acute angle (the dotted line connecting with the optomechanical module 10 in FIG. 2 is parallel to the first surface 21 ), that is, γ<90°, and γ can be 15°, 20°, 30°, 45° °, 55°, 60°, 67°, 70°, 80°, 88°, etc. At present, when the temple 300 is perpendicular to the optical transmission element 20, in order to make the light emitted by the optical-mechanical module 10 enter the optical transmission element 20 vertically, and then enter the human eye vertically, only the central axis of the temple 300 needs to be aligned with the optical-mechanical The optical axis of the module 10 may be parallel, that is, the optical axis of the optical-mechanical module 10 may be perpendicular to the optical transmission element 20 . However, after people wear the smart wearable device 1000, the two sides of the smart wearable device 1000 will be spread apart. In terms of structural design, the center axis of the temple 300 in the embodiment of the present application is designed between the center axis of the temple 300 and the light transmission element 20 (mirror frame 200). They are inclined relative to each other and at an included angle, rather than perpendicular to each other, for better ergonomics. If the width of the temples 300 is kept unchanged, and the optical axis of the optomechanical module 10 is kept perpendicular to the optical transmission element 20, the temple 300 will not be able to adjust the optical axis only by rotating the temples 300 to form this angle. The optomechanical module 10 of the vertical light transmission element 20 is wrapped in. One solution is to increase the size of the temple 300 to be able to enclose the optical-mechanical module 10. This method will increase the peripheral size of the temple 300, reduce the appearance, and also increase the volume and weight of the temple 300, increasing the cost. It also affects wearing comfort. The smart wearable device 1000 and the optical display assembly 100 of the present application are designed to form a first angle γ between the first surface 21 and the light-emitting surface 11 of the optomechanical module 10, so that the optical path changing element 30 and the optomechanical module 10 can be placed together In the smart wearable device 1000, and the optical axis of the optical assembly formed by the optical path changing element 30 and the optomechanical module 10 is kept parallel to the central axis of the temple 300, at this time, the optical path changing element 30 and the optomechanical module 10 are formed. The optical assembly is inclined at the same angle relative to the light transmission element 20 , so that the optical-mechanical module 10 and the optical path changing element 30 can be encapsulated in the smart wearable device 1000 without increasing the volume and weight of the temple 300 of the smart wearable device 1000 . Lightweight and compact.

The optical transmission element 20 is used for the light beam carrying the picture emitted from the optical-mechanical module 10 to be emitted from the exit position of the optical transmission element 20 after being totally reflected inside the optical transmission element 20 . The optical transmission element 20 includes an optical waveguide, such as a waveguide sheet, an optical fiber, etc., and the optical waveguide may be made of glass or plastic. In this embodiment, the light transmission element 20 is a waveguide sheet. In the smart wearable device 1000 according to the embodiment of the present application, since the light transmission element 20 (optical waveguide) is thin and light and has high penetrability to external light, the light entering the light transmission element 20 from the first surface 21 is imaged in the optical waveguide The light transmission element 20 couples the light into its own glass substrate, transmits the light to the front of the human eye through the principle of "total reflection" and then releases it from the first surface 21 come out. During the entire transmission process, the optical transmission element 20 is only responsible for transmitting the image projected by the optical-mechanical module 10, and the virtual image projected by the optical-mechanical module 10 can be seen at the position of the human eye. With transparency, users can also see the real world, enabling augmented reality effects. The smart wearable device 1000 of the embodiment of the present application has the optical transmission element 20 as the transmission element, so the optical-mechanical module 10 can be placed away from the mirror frame 200, for example, on the side of the smart wearable device 1000, that is, on the temple 300, This greatly reduces the obstruction of the optical-mechanical module 10 to the outside line of sight, and makes the weight distribution more ergonomic, thereby improving the wearing experience of the smart wearable device 1000 .

The light path changing element 30 includes prisms, lenses, gratings, parallel plates, Fresnel zone plates, birefringent crystals, liquid crystals, etc., and is used to change the light transmission path. In the embodiment of the present application, the optical path changing element 30 is a prism.

Although the optical axis of the optical assembly formed by the optical path changing element 30 and the optical-mechanical module 10 is kept parallel to the central axis of the temple 300 , it can be solved that the aforementioned temple 300 cannot make the optical axis perpendicular to the optical-mechanical module of the optical transmission element 20 However, at this time, the light from the optomechanical module 10 will not enter the optical transmission element 20 vertically, nor will it exit vertically and enter the human eye, so that people still cannot watch from the best viewing angle. The projection screen of the optomechanical module 10 . In view of this, in the embodiment of the present application, the optical path changing element 30 and the light transmission element 20 work together so that the distance between the center of the exit position of the first surface 21 and the third surface 25 is within a predetermined range, and the predetermined range may be The distance from the third surface 25 is 10mm to 30mm, which can include 10mm, 15mm, 18mm, 20mm, 22mm, 26mm, 28mm, 29mm, 30mm, etc. The predetermined range can be the range indicated by the dotted circle as shown in FIG. It is ensured that the position of the projection display of the optical display assembly 100 matches the best viewing angle of the user viewing the projection image, so as to enhance the user experience. In some embodiments, the center of the exit position of the light on the first surface 21 may be corresponding to the position of the central axis 27 of the light transmission element 20. At this time, the light can be projected to the user in the central area of the frame 200, so that people can The projection screen of the optomechanical module 10 can be viewed from the best viewing angle, the projection viewing angle is better, and the realism of the scene is increased. When the smart wearable device 1000 is smart AR glasses, when people wear the smart wearable device 1000, the human eye is usually facing the central axis 27 of the light transmission element 20. Therefore, the center of the exit position of the first surface 21 is also It can correspond to the center position of the orthographic projection of the human eye on the first surface 21 after wearing the smart wearable device 1000, so that the user can see the projected picture without deflecting the eyeball, the viewing angle is better, and the realism of the scene is increased.

To sum up, the optical display assembly 100 and the smart wearable device 1000 of the present application utilize the light-emitting surface 11 of the optical-mechanical module 10 and the first surface 21 of the optical path transmission element 20 to form a first angle γ, which makes the optical display assembly 100 easier Matches the head of a person who is narrow in the front and wide in the back. Meanwhile, the optical display assembly 100 and the smart wearable device 1000 of the present application utilize an additional optical path changing element 30 between the optomechanical module 10 and the optical path transmission element 20 , and use the optical path changing element 30 to change the light emitted by the optomechanical module 10 The light enters from one end of the first surface 21 of the light transmission element 20 after the transmission direction, and makes the light exit from the other end of the first surface 21 after being transmitted through the light transmission element 20, and the center of the exit position and the third surface 25 The distance is within a predetermined range, so that the user can view the picture projected by the optomechanical module 10 with the best viewing angle.

Referring to FIG. 3 , in some embodiments, the optical path changing element 30 cooperates with the light transmission element 20 so that the distance between the center of the exit position of the first surface 21 and the third surface 25 is equal to the distance of the light transmission element 20 . The distance from the central axis 27 to the third surface 25 . That is to say, the center of the exit position of the light is located on the central axis 27 of the light transmission element 20, so that the exit position of the light can be ensured to be located directly in front of the user, so that the projection display position of the optical display assembly 100 is the same as that of the user viewing the projected image. The best viewing angle is matched, the projection viewing angle is better, the realism of the scene is increased, and the user experience is enhanced.

Please continue to refer to FIG. 3 . Specifically, the optical path changing element 30 includes an incident surface 31 and an exit surface 32 arranged opposite to each other. The incident surface 31 is parallel to the light exit surface 11 of the optomechanical module 10 , and the angle between the exit surface 32 and the incident surface 31 is a first acute angle, so that the light in the optical path changing element 30 is refracted (deflected to the right) perpendicular to the first surface 21 into the light transmission element 20 . The light entering the interior of the light transmission element 20 undergoes multiple total reflections and then exits perpendicularly to the first surface 21. Since the human eye is usually located in a position directly opposite the central axis 27 of the light transmission element 20, the light perpendicularly exiting from the first surface 21 may Entering the human eye vertically, at this time, the user can not only watch the picture projected by the optomechanical module 10 at the best viewing angle, but also the route of light projected to the human eye is the shortest, shortening the time for the user to see the projected picture, and the user experience is the best.

Referring to FIG. 4 , in some embodiments, the optical path changing element 30 cooperates with the light transmission element 20 so that the distance between the center of the exit position of the first surface 21 and the third surface 25 is smaller than that of the light transmission element 20 . The distance from the central axis 27 to the third surface 25 . Wherein, the exit position of the light on the first surface 21 is located in the area in the dotted circle in FIG.

Specifically, please continue to refer to FIG. 4 , the optical path changing element 30 still includes an incident surface 31 and an exit surface 32 arranged opposite to each other. The incident surface 31 is parallel to the light exit surface 11 of the optomechanical module 10, and the included angle between the exit surface 32 and the incident surface 31 is a second acute angle, and the second acute angle is smaller than the first acute angle, so that after the light in the optical path changing element 30 is refracted ( more to the right than in FIG. 3 ) and enter the light transmission element 20 obliquely from the first face 21 . The light entering the inside of the light transmission element 20 undergoes multiple total reflections and then exits obliquely relative to the first surface 21 (the direction of the inclination is toward the central axis 27 ), because the human eye is usually located at the position facing the central axis 27 of the light transmission element 20 . , the light emitted obliquely from the first surface 21 can still enter the human eye. At this time, the user can not only watch the picture projected by the optomechanical module 10 from the best viewing angle, but also the picture projected by the optomechanical module 10 is located in the optical transmission element. The side of the 20 away from the opto-mechanical module 10 is not directly in front of the user, so it will not block the user's field of vision and avoid the impact on the user's vision in certain situations. For example, in a specific occasion, when the user uses the smart wearable device 1000 while driving or driving a vehicle such as an airplane, the projected image is not directly in front of the user and will not block the user's field of vision, thereby ensuring that the user can use the smart wearable device on a specific occasion. 1000's of security.

Referring to FIG. 5 , in some embodiments, the light entering the light transmission element 20 undergoes multiple total reflections and then exits obliquely relative to the first surface 21 , including: the light exits at a second angle relative to the first surface 21 . The second included angle may be an acute angle, as shown by the angle θ in FIG. 5 , that is, the second included angle θ<90°, and θ may be 19°, 25°, 35°, 45°, 50°, 60° , 67°, 70°, 82°, 89°, etc. The second included angle may also refer to an angle complementary to the angle θ in FIG. 5 , and in this case, the second included angle is an obtuse angle. The light exits at a second angle θ relative to the first surface 21, so that the light entering the light transmission element 20 obliquely can exit obliquely from the first surface 21 and still enter the human eye. At this time, the user can not only view the light from the best viewing angle. The picture projected by the optical-mechanical module 10, and the picture projected by the optical-mechanical module 10 is located on the side of the optical transmission element 20 away from the optical-mechanical module 10, not directly in front of the user, will not block the user's field of vision, and avoid certain occasions The impact on the user's vision can thus ensure the safety of the user using the smart wearable device 1000 in a specific situation.

Referring to FIG. 6 , in some embodiments, the light transmission element 20 is used to project light from the first surface 21 to the human eye, and the center of the exit position of the light on the first surface 21 is located on the first surface 21 of the human eye. within the orthographic projection range.

Specifically, the orthographic projection of the human eye on the first surface 21 is shown by the dotted circle in FIG. 6 . The light emitted from the orthographic projection range of the human eye on the first surface 21 can ensure that the projected image is directly in front of the human eye, and the user does not You can easily see the projection screen by deflecting your eyeballs, which can reduce eye fatigue.

Please continue to refer to FIG. 6 , more specifically, the light path changing element 30 may include an incident surface 31 and an exit surface 32 which are arranged opposite to each other. The incident surface 31 is parallel to the light exit surface 11 of the optomechanical module 10 , and the angle between the exit surface 32 and the incident surface 31 is a third acute angle, so that the light in the optical path changing element 30 is refracted (deflected to the right) perpendicular to the first surface 21 into the light transmission element 20 . The light entering the inside of the light transmission element 20 is perpendicular to the first surface 21 and then exits after multiple total reflections. The third acute angle may be the same as or different from the first acute angle.

In an example, the human eye is located at a position directly opposite the central axis 27 of the light transmission element 20, and the light emitted vertically from the first surface 21 can enter the human eye vertically. At this time, the user can not only view the optical machine with the best viewing angle The image projected by the module 10 has the shortest route of light projected to the human eye, shortening the time for the user to see the projected image, and providing the best user experience.

Referring to FIG. 7 , in some embodiments, the light transmission element 20 is used to project light from the first surface 21 to the human eye, and the center of the exit position of the light on the first surface 21 and the optical-mechanical module 10 are respectively located in the positive direction. Both sides of the projection.

Specifically, the orthographic projection of the human eye on the first surface 21 is shown by the dotted circle in FIG. 7 . The center of the exit position of the light on the first surface 21 and the optomechanical module 10 are located on both sides of the orthographic projection, which can satisfy the user’s needs. When viewing the projection screen, the opposite directions of the light incident on the user's eyes can converge to a point O (as shown in FIG. 8 ), which is comfortable and natural for the human eye and enhances the user experience.

Please continue to refer to FIG. 7 , more specifically, the light path changing element 30 still includes an incident surface 31 and an exit surface 32 arranged opposite to each other. The incident surface 31 is parallel to the light exit surface 11 of the optomechanical module 10, and the included angle between the exit surface 32 and the incident surface 31 is a fourth acute angle, and the fourth acute angle is smaller than the third acute angle, so that after the light in the optical path changing element 30 is refracted ( more to the right than in FIG. 6 ) and enter the light transmission element 20 obliquely from the first face 21 . The light entering the inside of the light transmission element 20 undergoes multiple total reflections and then exits obliquely relative to the first surface 21 (the oblique direction is toward the direction of the central axis 27 ). The fourth acute angle may be the same as or different from the second acute angle, and the fourth acute angle is smaller than the third acute angle.

In an example, the human eye is located at a position directly opposite the central axis 27 of the optical transmission element 20, and the light emitted obliquely from the first surface 21 can enter the human eye obliquely. At this time, the user can not only view the optical machine with the best viewing angle The picture projected by the module 10, and the picture projected by the opto-mechanical module 10 is located on the side of the optical transmission element 20 away from the opto-mechanical module 10, not directly in front of the user, and will not block the user's field of vision, avoiding specific occasions. The influence of the user's vision can ensure the safety of the user using the smart wearable device 1000 in a specific situation.

Referring to FIGS. 8 and 9 , in some embodiments, the optical path changing element 30 is combined with the optomechanical module 10 . Specifically, in one embodiment, the way of combining the optical path changing element 30 with the optomechanical module 10 includes: combining the optical path changing element 30 with the optomechanical module 10 through a common carrier, for example, the optical path changing element 30 and the optomechanical module 10 are combined. The modules 10 are all installed in the carrier, but they can be spaced apart, that is, the light-emitting surface 11 and the incident surface 31 can be spaced apart (as shown in FIG. 8 ), which can avoid the optical-mechanical mold when the smart wearable device 1000 is used. The group 10 rubs against the optical path changing element 30 , which damages the optical-mechanical module 10 or the optical path changing element 30 and prolongs the service life of the smart wearable device 1000 . Of course, the optical path changing element 30 and the optical-mechanical module 10 are both installed in the carrier, but the two can be closely attached to each other, that is, the light-emitting surface 11 is in contact with the incident surface 31, so that the stray light incident surface 31 can be prevented from entering, which improves the The imaging quality of the smart wearable device 1000 enhances the user experience.

In another embodiment, the optical path changing element 30 and the opto-mechanical module 10 can be formed into a single structure by screwing, gluing, welding, snapping, etc. In this case, the single structure can be installed in a carrier , at this time, the light emitting surface 11 and the incident surface 31 may also be attached (as shown in FIG. 9 ), so that the internal volume of the temple 300 can be reduced, which is beneficial to the lightness of the smart wearable device 1000 . In addition, the light emitting surface 11 and the incident surface 31 are bonded together, which can also prevent the light incident surface 31 from entering, thereby improving the imaging quality of the smart wearable device 1000 and enhancing the user experience.

It should be noted that the carrier here may be the temple 300 or other shell structures, which are not limited here.

Claims (12)

1. An optical display assembly, comprising:

the optical-mechanical module is used for projecting light rays carrying pictures;

the optical transmission element comprises a first surface, a second surface and a third surface, the first surface is opposite to the second surface, the third surface is connected with the first surface and the second surface, the optical transmission element is used for receiving the light at the first surface and reflecting the light in the interior between the first surface and the second surface, and the first surface and the light-emitting surface of the optical-mechanical module form a first included angle; and

the light path changing element is arranged between the light transmission element and the optical mechanical module, the light path changing element is used for receiving the light rays and projecting the light rays to the first surface, the light rays are emitted from the first surface, and the distance between the center of the emitting position of the light rays on the first surface and the third surface is within a preset range.

2. The optical display module according to claim 1, wherein a distance between a center of the light exiting position of the light ray at the first face and the third face is equal to a distance between a central axis of the light transmitting element and the third face.

3. An optical display assembly according to claim 2, wherein the light rays exit perpendicularly with respect to the first face.

4. The optical display module of claim 1, wherein a distance between a center of the light exiting position of the light ray at the first surface and the third surface is smaller than a distance between a central axis of the light transmitting element and the third surface.

5. The optical display assembly of claim 4, wherein the light rays exit at a second included angle relative to the first face.

6. An optical display module as claimed in claim 1, characterized in that the light-transmitting element is adapted to project the light from the first side to a human eye, the center of the exit position of the light at the first side being located within the orthographic projection range of the human eye at the first side.

7. The optical display module of claim 1, wherein the light transmitting element is configured to project the light from the first surface to a human eye, and the center of the emergent position of the light on the first surface and the optical-mechanical module are respectively located on two sides of the orthographic projection.

8. An optical display module as claimed in claim 2 or 6, characterized in that the optical path altering component comprises an entrance surface and an exit surface, the entrance surface being parallel to the exit surface, the light beam exiting from the exit surface entering the first surface perpendicularly.

9. An optical display module as claimed in claim 4 or 7, characterized in that the optical path altering component comprises an entrance surface and an exit surface, the entrance surface being parallel to the exit surface, the light exiting from the exit surface being inclined into the first surface.

10. The optical display module of any one of claims 1 to 9 wherein the optical path altering component is coupled to the opto-mechanical module and the optical path altering component is coupled to the opto-mechanical module via a common carrier, the optical path altering component being spaced from or attached to the opto-mechanical module.

11. An intelligence wearing equipment which characterized in that includes:

a mirror frame;

a temple; and

the optical display assembly of any one of claims 1-10, the opto-mechanical module and the optical path altering component being disposed within the temple, the optical transmission component being disposed within the frame.

12. The intelligent wearable device according to claim 11, wherein the number of the optical display assemblies is two, the two optical mechanical modules and the two optical path changing elements are respectively disposed in the two temples, and the two optical transmission elements are respectively disposed in the two mirror frames.

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