Lens assembly, optical lens and display device
By integrating eye-tracking and liquid crystal lens layers onto a single substrate through a conductive layer, the lens assembly's thickness is reduced, addressing the issue of bulkiness in AR eyeglasses with multiple layers.
Patent Information
- Application Number
- CN202422027702.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing AR glasses lenses have a larger overall thickness due to the fact that they contain multiple substrates.
A first conductive layer is provided on the side of the eye tracking layer away from the substrate, and a liquid crystal lens layer is directly provided on the side of the first conductive layer away from the eye tracking layer. At the same time, electrical connection is made to reduce the use of additional substrates, so as to realize that the eye tracking layer and the liquid crystal lens layer share a substrate, and light emitting parts are installed on the first conductive layer to optimize the lens assembly structure.
The thickness of the lens assembly is reduced, achieving a compact structure of the lens assembly while maintaining the integrity and functionality of the electrical connection.
Smart Images
Figure CN223108216U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of image display, and particularly to a lens assembly, an optical lens, and a display device. Background Art
[0002] Most lenses of AR (Augmented Reality) glasses are provided with an eye tracking component to track the eye position of the user in real time. Currently, when manufacturing the lens, generally, the eye tracking component is first installed on a substrate, and then the liquid crystal lens or other optical layers of the lens are installed on another substrate, and then the two substrates are laminated. The lens with this structure has multiple substrates, resulting in a relatively large overall thickness of the lens. Summary of the Utility Model
[0003] This application provides a lens assembly, an optical lens, and a display device to solve the problem of the relatively large thickness of the lens in the known art.
[0004] This application provides a lens assembly, including a substrate, an eye tracking layer, a first conductive layer, a liquid crystal lens layer, and a light-emitting component; the eye tracking layer is disposed on one side of the substrate; the first conductive layer is disposed on the side of the eye tracking layer away from the substrate, and the first conductive layer is electrically connected to the eye tracking layer; the liquid crystal lens layer is disposed on the side of the first conductive layer away from the eye tracking layer, the outer contour of the first conductive layer exceeds the outer contour of the liquid crystal lens layer, and the liquid crystal lens layer is electrically connected to the first conductive layer; the light-emitting component is disposed on the side of the first conductive layer away from the eye tracking layer, the light-emitting component is located outside the liquid crystal lens layer, and the light-emitting component is electrically connected to the first conductive layer.
[0005] In a possible implementation manner, the lens assembly further includes a barrier member, the barrier member is disposed on the side of the first conductive layer away from the eye tracking layer, the barrier member is disposed around the axis of the lens assembly, and encloses to form a receiving cavity, and the liquid crystal lens layer is located in the receiving cavity.
[0006] In a possible implementation manner, along the direction of the axis of the lens assembly, the end face of the barrier member away from the first conductive layer is flush with the end face of the liquid crystal lens layer away from the first conductive layer.
[0007] In a possible implementation manner, the lens assembly further includes a second conductive layer, the second conductive layer is disposed on the side of the first conductive layer away from the substrate and located outside the barrier member, and the second conductive layer is electrically connected to the first conductive layer.
[0008] In a possible implementation manner, the lighting element is disposed on a side of the second conductive layer away from the first conductive layer, and the lighting element is electrically connected to the second conductive layer.
[0009] In a possible implementation manner, the number of the second conductive layers is multiple, the multiple second conductive layers are disposed around the outer periphery of the barrier member, and one lighting element is disposed on each of the second conductive layers.
[0010] In a possible implementation manner, the lens assembly further includes a third conductive layer, the third conductive layer is disposed on a side of the liquid crystal lens layer away from the first conductive layer, and the third conductive layer is electrically connected to the liquid crystal lens layer.
[0011] In a possible implementation manner, the lens assembly further includes a connecting member, one end of the connecting member is electrically connected to the third conductive layer, and the other end of the connecting member is electrically connected to the second conductive layer.
[0012] The present application further provides an optical lens, including an optical component and the above-mentioned lens assembly, and the optical component is disposed on one side of the lens assembly.
[0013] The present application further provides a display device, including a display main body and at least one of the above-mentioned optical lenses, and at least one of the optical lenses is disposed on the display main body.
[0014] In the lens assembly of the present application, a first conductive layer is disposed on a side of the eye tracking layer away from the substrate, the liquid crystal lens layer is directly disposed on a side of the first conductive layer away from the eye tracking layer, and the liquid crystal lens layer and the eye tracking layer are both electrically connected to the first conductive layer, so as to realize that the eye tracking layer and the liquid crystal lens layer are simultaneously mounted on a single substrate, without adding other substrates between the eye tracking layer and the liquid crystal lens layer and then separately arranging circuits for the eye tracking layer and the liquid crystal lens layer, thereby reducing the thickness of the entire lens assembly. At the same time, the lighting element is also disposed on the first conductive layer, and the lighting element is mounted by using an area of the first conductive layer where the liquid crystal lens layer is not installed, so as to utilize the surface area of the first conductive layer to a greater extent and make the structure of the lens assembly more compact. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic structural diagram of the lens assembly of the present application in an embodiment.
[0016] Figure 2 It is a schematic structural diagram of the optical lens of the present application in an embodiment.
[0017] Figure 3 It is a schematic structural diagram of the display device of the present application in an embodiment.
[0018] MAIN ELEMENT SYMBOL DESCRIPTION:
[0019] Display device 300
[0020] Display body 301
[0021] Mounting groove 302
[0022] Optical lens 200
[0023] Optical component 201
[0024] Protection structure 202
[0025] Lens assembly 100
[0026] Substrate 10
[0027] Eye tracking layer 20
[0028] First conductive layer 30
[0029] Liquid crystal lens layer 40
[0030] Light-emitting element 50
[0031] Second conductive layer 60
[0032] Barrier member 70
[0033] Receiving cavity 71
[0034] Third conductive layer 80
[0035] Connecting member 90
[0036] Axis Z
[0037] The following specific embodiments will further illustrate the present application in conjunction with the above drawings. Specific embodiments
[0038] The following description will describe the content of the present application more comprehensively with reference to the drawings. The exemplary embodiments shown in the drawings are of the present application. However, the present application can be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components.
[0039] The terms used herein are for the purpose of describing particular exemplary embodiments only and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms as well. Further, when used herein, "comprises" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof.
[0040] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Further, unless clearly defined herein, terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant art and the content of this application, and will not be interpreted as having an idealized or overly formal meaning.
[0041] The following further describes in detail the specific embodiments of the present application with reference to the accompanying drawings.
[0042] As Figure 1 shown, this embodiment provides a lens assembly 100, including a substrate 10, an eye tracking layer 20, a first conductive layer 30, a liquid crystal lens layer 40, and a light emitting element 50.
[0043] The substrate 10 is made of a transparent material, and the eye tracking layer 20 is disposed on one side of the substrate 10. The first conductive layer 30 is disposed on the side of the eye tracking layer 20 away from the substrate 10, and the first conductive layer 30 is electrically connected to the eye tracking layer 20. The liquid crystal lens layer 40 is disposed on the side of the first conductive layer 30 away from the eye tracking layer 20, and the liquid crystal lens layer 40 is electrically connected to the first conductive layer 30. The outer contour of the first conductive layer 30 extends beyond the outer contour of the liquid crystal lens layer 40, so that the liquid crystal lens layer 40 is only mounted on a partial area of the surface of the side of the first conductive layer 30 away from the eye tracking layer 20, and other areas of the surface of the side of the first conductive layer 30 away from the eye tracking layer 20 can be mounted with other components such as the light emitting element 50. The light emitting element 50 is disposed on the side of the first conductive layer 30 away from the eye tracking layer 20, the light emitting element 50 is located outside the liquid crystal lens layer 40, and the light emitting element 50 is electrically connected to the first conductive layer 30.
[0044] Thus, for the lens assembly 100 of the present application, a first conductive layer 30 is disposed on the side of the eye tracking layer 20 away from the substrate 10, and the liquid crystal lens layer 40 is directly disposed on the side of the first conductive layer 30 away from the eye tracking layer 20. The liquid crystal lens layer 40 and the eye tracking layer 20 are both electrically connected to the first conductive layer 30, so as to realize that the eye tracking layer 20 and the liquid crystal lens layer 40 are both mounted on a single substrate 10, without adding other substrates between the eye tracking layer 20 and the liquid crystal lens layer 40 and then separately arranging circuits for the eye tracking layer 20 and the liquid crystal lens layer 40, thereby reducing the thickness of the entire lens assembly 100. At the same time, the light emitting element 50 is also disposed on the first conductive layer 30, and the light emitting element 50 is mounted in the area of the first conductive layer 30 where the liquid crystal lens layer 40 is not installed, so as to utilize the surface area of the first conductive layer 30 to a greater extent and make the structure of the lens assembly 100 more compact.
[0045] Please further combine Figure 1 In an embodiment, the substrate 10 can be made of glass material or plastic material, etc. The plastic material can be one or more of polyethylene terephthalate (PET), polymethyl methacrylate (PMMA) or other polymer materials.
[0046] The shape of the substrate 10 can be selected according to actual needs, and the shape of the substrate 10 is not limited in the present application. The shape of the eye tracking layer 20 is adapted to the shape of the substrate 10 and fits on the surface of the substrate 10. The eye tracking layer 20 can be connected to the substrate 10 by means of gluing or the like.
[0047] In this embodiment, the eye tracking layer 20 is a circuit board provided with eye tracking circuits. The first conductive layer 30 is an ITO (Indium Tin Oxide) conductive film, and the ITO conductive film has a high conductivity and light transmittance, and does not block the transmission of light while realizing conduction.
[0048] The shape of the first conductive layer 30 is adapted to the shape of the eye tracking layer 20, and the first conductive layer 30 is attached to the side of the eye tracking layer 20 away from the substrate 10 by means of gluing or the like, so as to establish a current channel between the first conductive layer 30 and the eye tracking layer 20.
[0049] Please further combine Figure 1 In an embodiment, the lens assembly 100 further includes a barrier member 70. The barrier member 70 is made of a light-transmitting and non-conductive material, and the barrier member 70 is disposed on the side of the first conductive layer 30 away from the eye tracking layer 20. The barrier member 70 is a ring structure, and the barrier member 70 is disposed around the axis Z of the lens assembly 100 and encloses a receiving cavity 71. The liquid crystal lens layer 40 is located in the receiving cavity 71, and the light emitting element 50 is located outside the barrier member 70, so as to block the light emitting element 50 and the liquid crystal lens layer 40 through the barrier member 70.
[0050] Specifically, the barrier member 70 is dispensed around the axis Z of the lens assembly 100 by means of dam dispensing, so as to form an annular barrier member 70 after the glue is cured. Subsequently, structures such as liquid crystal are filled in the accommodation cavity 71 formed by the barrier member 70, thereby forming the liquid crystal lens layer 40. The liquid crystal lens layer 40 can utilize the electro-optic effect to change the spatial distribution of the lens refractive index, facilitating the adjustment of the focal length.
[0051] In this embodiment, along the direction of the axis Z of the lens assembly 100, the end face of the end of the barrier member 70 away from the first conductive layer 30 is flush with the end face of the end of the liquid crystal lens layer 40 away from the first conductive layer 30, so as to facilitate the subsequent attachment of other optical elements on the side of the liquid crystal lens layer 40 away from the first conductive layer 30.
[0052] The lens assembly 100 further includes a third conductive layer 80, and the third conductive layer 80 is also an ITO conductive film. The third conductive layer 80 is disposed on the side of the liquid crystal lens layer 40 away from the first conductive layer 30, and the third conductive layer 80 is electrically connected to the liquid crystal lens layer 40.
[0053] The third conductive layer 80 is adapted to the shape of the structure formed by the composite of the barrier member 70 and the liquid crystal lens layer 40, and the third conductive layer 80 is attached to the surface of the side of the barrier member 70 and the liquid crystal lens layer 40 away from the first conductive layer 30 by means of gluing or the like, so as to close the accommodation cavity 71 while forming a current channel after the third conductive layer 80 contacts the liquid crystal lens layer 40, realizing the protection effect on the liquid crystal lens layer 40.
[0054] Please also refer to Figure 1 , in an embodiment, the lens assembly 100 further includes a second conductive layer 60. The second conductive layer 60 is disposed on the side of the first conductive layer 30 away from the substrate 10 and is located outside the barrier member 70, so as to utilize the surface area of the first conductive layer 30 where the barrier member 70 and the liquid crystal lens layer 40 are not installed to install the second conductive layer 60. The second conductive layer 60 is attached to the first conductive layer 30 by means of gluing or the like. Along the direction of the axis Z of the lens assembly 100, the projection of the second conductive layer 60 on the first conductive layer 30 is completely located within the first conductive layer 30, avoiding affecting the aesthetics after the outer contour of the second conductive layer 60 exceeds the outer contour of the first conductive layer 30. The second conductive layer 60 is an ITO conductive film and can also be other transparent conductive structures. The second conductive layer 60 is electrically connected to the first conductive layer 30.
[0055] The light-emitting component 50 is disposed on the side of the second conductive layer 60 away from the first conductive layer 30, and the light-emitting component 50 is electrically connected to the second conductive layer 60. The light-emitting component 50 can emit infrared light toward the eyeball, and parameters such as the position of the reflected light formed after the infrared light is reflected by the eyeball or the time when the reflected light is received are detected by a detection element (not shown in the figure) to determine the current position of the eyeball. The light-emitting component 50 can be adhesively attached to the second conductive layer 60, and the shape of the light-emitting component 50 is adapted to the shape of the second conductive layer 60 to ensure that the outer contour of the light-emitting component 50 does not exceed the outer contour of the first conductive layer 30.
[0056] In this embodiment, the number of the second conductive layers 60 is multiple. The multiple second conductive layers 60 are arranged at intervals around the outer periphery of the barrier member 70, and a light-emitting component 50 is provided on each second conductive layer 60, so that the multiple light-emitting components 50 are spaced apart and distributed in the edge area of the lens assembly 100, and can emit light from different areas of the lens assembly 100 toward the eyeball to track the position of the eyeball.
[0057] Please also combine Figure 1 In an embodiment, the lens assembly 100 further includes a connecting member 90. One end of the connecting member 90 is electrically connected to the third conductive layer 80, and the other end of the connecting member 90 is electrically connected to the second conductive layer 60.
[0058] The connecting member 90 can be an ITO conductive film or a transparent conductive wire. The connecting member 90 is disposed on the outer peripheral surface of the barrier member 70 along the extending direction of the barrier member 70.
[0059] In this embodiment, one of the multiple second conductive layers 60 can be used as a gold finger to be electrically connected to other components, and the other second conductive layers 60 are all electrically connected to the second conductive layer 60 serving as the gold finger through the first conductive layer 30. At the same time, the eyeball tracking component is electrically connected to the second conductive layer 60 serving as the gold finger through the first conductive layer 30, and the liquid crystal lens layer 40 is electrically connected to the second conductive layer 60 serving as the gold finger through the first conductive layer 30 and the third conductive layer 80, so as to realize the circuit integration of the entire lens assembly 100.
[0060] It can be understood that in other embodiments, the first conductive layer 30 can also be used as a gold finger, and the third conductive layer 80 is electrically connected to the first conductive layer 30 through the connecting member 90.
[0061] It can be understood that in other embodiments, a conductive structure (not shown in the figure) can also be provided on the first conductive layer 30, and the conductive structure is used as a gold finger. The first conductive layer 30, the multiple second conductive layers 60, and the third conductive layer 80 are all electrically connected to the conductive structure.
[0062] As Figure 2 shown and combined with Figure 1, this embodiment also provides an optical lens 200, which includes an optical component 201 and the above-mentioned lens component 100. The optical component 201 is disposed on one side of the lens component 100.
[0063] Specifically, the optical component 201 is adhered to the side of the third conductive layer 80 away from the first conductive layer 30. The optical component 201 is adapted to the shape of the substrate 10, and a protective structure 202 is filled between the optical component 201 and the area of the first conductive layer 30 where the liquid crystal lens layer 40 and the barrier 70 are not installed. The protective structure 202 wraps the light-emitting component 50 to prevent the light-emitting component 50 from being damaged. The protective structure 202 is made of a light-transmissive and insulating material, and its material can be an inorganic or organic material, such as silicon or resin.
[0064] The optical component 201 can be a lens structure formed by laminating multiple functional layers. The structure of the optical component 201 includes, but is not limited to, a waveguide layer, an antireflection layer, and other structures.
[0065] As Figure 3 shown, and in combination with Figure 2 , this embodiment also provides a display device 300, which includes a display body 301 and at least one of the above-mentioned optical lenses 200. At least one optical lens 200 is disposed on the display body 301.
[0066] In this embodiment, the display device 300 is an AR glasses and includes two optical lenses 200. Two mounting grooves 302 are formed on the display body 301. The two mounting grooves 302 are spaced apart, and the two optical lenses 200 are respectively mounted in the two mounting grooves 302.
[0067] It can be understood that in other embodiments, the display device 300 can also be an MR glasses or other wearable display devices.
[0068] In the above text, the specific embodiments of the present application are described with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that various changes and substitutions can be made to the specific embodiments of the present application without departing from the scope of the present application. These changes and substitutions all fall within the scope defined by the present application.
Claims
1. A lens assembly, characterized in that, Comprising: A substrate; An eye tracking layer disposed on one side of the substrate; A first conductive layer disposed on the side of the eye tracking layer away from the substrate, the first conductive layer being electrically connected to the eye tracking layer; A liquid crystal lens layer disposed on the side of the first conductive layer away from the eye tracking layer, an outer contour of the first conductive layer exceeding an outer contour of the liquid crystal lens layer, and the liquid crystal lens layer being electrically connected to the first conductive layer; A light emitting element disposed on the side of the first conductive layer away from the eye tracking layer, the light emitting element being located outside the liquid crystal lens layer, and the light emitting element being electrically connected to the first conductive layer.
2. The lens assembly according to claim 1, wherein The lens assembly further includes a barrier member disposed on the side of the first conductive layer away from the eye tracking layer, the barrier member being disposed around an axis of the lens assembly and enclosing a receiving cavity, and the liquid crystal lens layer being located within the receiving cavity.
3. The lens assembly according to claim 2, wherein Along a direction of the axis of the lens assembly, an end face of an end of the barrier member away from the first conductive layer is flush with an end face of an end of the liquid crystal lens layer away from the first conductive layer.
4. The lens assembly according to claim 2, wherein The lens assembly further includes a second conductive layer disposed on the side of the first conductive layer away from the substrate and located outside the barrier member, the second conductive layer being electrically connected to the first conductive layer.
5. The lens assembly according to claim 4, wherein, The light emitting element is disposed on the side of the second conductive layer away from the first conductive layer, and the light emitting element is electrically connected to the second conductive layer.
6. The lens assembly according to claim 5, wherein, The number of the second conductive layers is multiple, the multiple second conductive layers are disposed around an outer periphery of the barrier member, and one light emitting element is disposed on each of the second conductive layers.
7. The lens assembly according to claim 4, wherein, The lens assembly further includes a third conductive layer disposed on the side of the liquid crystal lens layer away from the first conductive layer, and the third conductive layer is electrically connected to the liquid crystal lens layer.
8. The lens assembly according to claim 7, characterized in that, The lens assembly further includes a connecting member, one end of the connecting member being electrically connected to the third conductive layer, and the other end of the connecting member being electrically connected to the second conductive layer.
9. An optical lens, characterized in that, Comprising an optical component and the lens assembly according to any one of claims 1 to 8, the optical component being disposed on one side of the lens assembly.
10. A display device, characterized in that, Comprising a display body and at least one optical lens according to claim 9, at least one of the optical lenses being disposed on the display body.