CN112198663A - Lens assembly, manufacturing method and intelligent glasses - Google Patents
Lens assembly, manufacturing method and intelligent glasses Download PDFInfo
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- CN112198663A CN112198663A CN202010997803.4A CN202010997803A CN112198663A CN 112198663 A CN112198663 A CN 112198663A CN 202010997803 A CN202010997803 A CN 202010997803A CN 112198663 A CN112198663 A CN 112198663A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1809—Diffraction gratings with pitch less than or comparable to the wavelength
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The embodiment of the application provides a lens assembly, a manufacturing method and intelligent glasses, wherein the lens assembly comprises a display lens, a protective lens, a connecting piece and a supporting structure, the display lens and the protective lens are arranged at intervals, and a grating structure is arranged on the surface, facing the protective lens, of the display lens; the connecting piece is used for connecting the protective lens and the display lens; the supporting structure is arranged between the protective lens and the display lens, and the height of the supporting structure is larger than that of the grating structure. This application embodiment will protect the lens and show the lens through the connecting piece and connect, set up bearing structure between demonstration lens and protection lens, bearing structure highly is greater than the height of grating structure on the demonstration lens for when the lens subassembly received deformation, bearing structure can reduce the degree of lens subassembly deformation, and then the protection grating structure is not destroyed.
Description
Technical Field
The application relates to the technical field of wearable equipment, in particular to a lens assembly, a manufacturing method and intelligent glasses.
Background
With the technical development of wearable devices, smart glasses products such as Augmented Reality (AR) glasses, Virtual Reality (VR) glasses, and the like are also increasingly popularized. Smart glasses are typically provided with lenses on which a user can view a corresponding virtual image. The optical waveguide glass is usually provided in the lens, but the optical waveguide glass is easily damaged by the special material of the optical waveguide glass when being collided or pressed.
Disclosure of Invention
The embodiment of the application provides a lens assembly, a manufacturing method and intelligent glasses, and when the lens assembly is deformed by external force, the deformation degree of the lens assembly can be reduced.
The embodiment of the present application provides a lens assembly, including:
protecting the lens;
the display lens is arranged at an interval with the display lens, and a grating structure is arranged on the surface of the display lens facing the protective lens;
a connector for connecting the protective lens and the display lens; and
and the supporting structure is arranged between the protective lens and the display lens, and the height of the supporting structure is greater than that of the grating structure.
The embodiment of the present application further provides a method for manufacturing a lens assembly, which is applied to a lens assembly, where the lens assembly includes a protection lens, a display lens, a connector and a support structure, and the method includes:
forming a grating structure on a surface of the display lens;
forming a support structure between the display lens surface and the protective lens surface, the support structure having a height greater than a height of the grating structure;
and connecting the protective lens and the display lens through a connecting piece, wherein the height of the connecting piece is greater than that of the supporting structure.
The application also provides an intelligent glasses, include:
an eyeglass assembly, such as the eyeglass assembly described above;
a spectacle frame upon which the lens assembly is disposed.
This application embodiment will protect the lens and show the lens through the connecting piece and connect, set up bearing structure between demonstration lens and protection lens, bearing structure highly is greater than the height of grating structure on the demonstration lens for when the lens subassembly receives external force to take place deformation, bearing structure can reduce the degree that the lens subassembly warp, and then the protection grating structure is not destroyed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural view of a lens assembly according to an embodiment of the present disclosure.
Fig. 2 is an exploded view of a lens assembly according to an embodiment of the present disclosure.
FIG. 3 is a first cross-sectional view of a lens assembly taken along the direction P1-P1 according to an embodiment of the present application.
FIG. 4 is a second cross-sectional view of a lens assembly taken along the direction P1-P1 according to an embodiment of the present application.
Fig. 5 is a schematic view of the display lens and support structure shown in fig. 4.
FIG. 6 is a third cross-sectional view of a lens assembly taken along the direction P1-P1 according to an embodiment of the present application.
Fig. 7 is a schematic structural view of the protective lens and support structure shown in fig. 6.
FIG. 8 is a fourth cross-sectional view of a lens assembly taken along the direction P1-P1 according to an embodiment of the present application.
Fig. 9 is a flowchart illustrating a method for manufacturing a lens assembly according to an embodiment of the present application.
Fig. 10 is a schematic structural diagram of smart glasses provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive effort, shall fall within the scope of protection of the present application.
The embodiment of the application provides a lens subassembly, this lens subassembly can be applied to in the intelligent glasses, and intelligent glasses can be at AR (Augmented Reality) glasses, VR glasses (Virtual Reality), MR (Mixed Reality) glasses or other types's intelligent glasses.
Referring to fig. 1 to 3, fig. 1 is a schematic view illustrating a structure of a lens assembly according to an embodiment of the present application, fig. 2 is an exploded schematic view of the lens assembly according to the embodiment of the present application, and fig. 3 is a first cross-sectional view of the lens assembly according to the embodiment of the present application along a direction P1-P1.
The lens assembly 10 includes a display lens 100, a protective lens 200, a connector 300 and a support structure 400, the display lens 100 and the protective lens 200 are spaced apart from each other, a grating structure 110 is disposed on a surface of the display lens 100 facing the protective lens 200, the connector 300 is used for connecting the protective lens 200 and the display lens 100 to form an accommodating space 500 between the display lens 100 and the protective lens 200, the support structure 400 is disposed between the protective lens 200 and the display lens 100 and located in the accommodating space 500, and a height of the support structure 400 is greater than a height of the grating structure 110.
The display lens 100 includes a grating structure 110 and an optical waveguide glass 120, and the grating structure 110 can couple light (e.g., effective light emitted by a microdisplay) into the optical waveguide glass 120 to display an image on the optical waveguide glass 120. Wherein the optical waveguide glass 120 may serve as a substrate, and the grating structure 110 may be formed on the surface of the optical waveguide glass 120. For example, the grating structure 110 may be processed on the surface of the optical waveguide glass 120 by using a nanoimprint technology, the grating structure 110 is a nano structure and is easily damaged by pressure impact, which may cause the display function of the optical waveguide glass 120 to be damaged, and the optical waveguide glass 120 is generally high refractive index glass that is not strengthened, has weak compression resistance and impact resistance, and is easily broken by impact. It can be understood that, since the grating structure has a certain height, the protective lens 200 and the display lens 100 need to form a receiving space 500 as shown in fig. 3 for receiving the grating structure 110, but when the lens assembly 10 is subjected to a pressure applied from the outside, the lens assembly 10 is easily deformed due to the receiving space 500, so that the protective lens and the grating structure are in contact, and the grating structure is easily fallen, collapsed or abnormally deformed.
In order to solve the above problem, this application is provided with the bearing structure 400 that is located accommodation space 500 between display lens 100 and protection lens 200, bearing structure 400 highly is greater than the height that shows grating structure 110 on lens 100, make lens subassembly 10 receive when taking place deformation, bearing structure 400 can reduce the degree of lens subassembly 10 deformation, avoid oppressing grating structure 110 because the too big protection lens 200 of deformation degree, lead to the destroyed condition of grating structure 110, the crashworthiness of lens subassembly 10 has been improved.
Wherein, protective glass 200 can be made for the glass material, compares in plastic material, and glass material's rigidity is better, and the pressurized deflection is little moreover, adopts glass material to make protective glass 200 can improve protective glass 200's shock resistance.
The connecting member 300 may be a colloid having a connecting capability, such as a solidified adhesive or a pressure sensitive adhesive, the connecting member 300 may be disposed at an edge of the display lens 100, an edge of the protective lens 200 is fixedly connected to an edge of the display lens 100 through the connecting member 300, the connecting member 300 may also be disposed at an edge of the protective lens 200, the edge of the display lens 100 is fixedly connected to an edge of the protective lens 200 through the connecting member 300, and the connecting member 300 may also be disposed at edges of the display lens 100 and the protective lens 200, and the connecting member 300 may fixedly connect the edge of the display lens 100 and the edge of the protective lens 200, and it can be understood that a height range of the connecting member 300 may be between 30 micrometers and 500 micrometers, and a width range of the connecting member 300 may be between 1 micrometer and 100 micrometers.
In some embodiments, the supporting structure can be disposed on a surface of the display lens, please continue to refer to fig. 4 and 5, fig. 4 is a schematic cross-sectional view of a second embodiment of the lens assembly taken along a direction P1-P1, and fig. 5 is a schematic structural view of the display lens and the supporting structure shown in fig. 4.
The supporting structures 400 are disposed on the surface 101 of the display lens 100 facing the protective lens 200, and specifically, a plurality of supporting structures 400 may be formed on the surface 101 of the optical waveguide glass 120 through a semiconductor process or a coating process, wherein each supporting structure 400 may be in a shape of a cylinder, a sphere, or other irregular shape, and the height of each supporting structure 400 needs to be greater than the height of the grating structure 110, it is understood that the height of the supporting structure 400 is a height value of the supporting structure above the surface of the display lens, and the height of the grating structure 110 is a height value of the grating structure above the surface of the protective lens, wherein the height of the grating structure 110 may be in a range from 50 nanometers to 1 micrometer, and the height of the supporting structures 400 may be in a range from 1 micrometer to 30 micrometers.
In order to improve the impact resistance of the lens assembly, the plurality of supporting structures 400 may be disposed around the grating structure 110, and when the protection lens 200 is deformed due to impact, the plurality of supporting structures 400 may support the protection lens 200, so as to reduce the deformation degree of the protection lens 200, and prevent the protection lens 200 from being pressed by the grating structure 110 to damage the grating structure 110 due to the greater deformation degree.
In some embodiments, the grating structure 110 may include an incoupling grating 1101 and an outcoupling grating 1102, wherein diffracted light incident from the incoupling grating 1102 enters the optical waveguide glass, the diffracted light is totally reflected inside the optical waveguide glass to the outcoupling grating 1102, and the outcoupling grating guides the light to a human eye for imaging, by adjusting the positions and heights of the plurality of microstructures, a plurality of support structures 400 may be disposed around the outcoupling grating 1102 and/or the incoupling grating 1101, for example, a plurality of support structures 400 may be disposed around the incoupling grating 1101 and the outcoupling grating 1102, or a plurality of support structures 400 may be disposed around the outcoupling grating 1102 only, or a plurality of support structures 400 may be disposed around the outcoupling grating 1101 only. It is to be understood that the location and number of support structures 400 shown in the figures are exemplary only and should not be construed as limiting the present application.
In some embodiments, the supporting structure 400 can be disposed on a protective lens, please continue to refer to fig. 6 and 7, in which fig. 6 is a schematic third cross-sectional view of a lens assembly along a direction P1-P1 according to an embodiment of the present application, and fig. 7 is a schematic structural view of the protective lens and the supporting structure shown in fig. 6.
The supporting structures 400 are disposed on the surface 201 of the protective lens 200, and specifically, a plurality of supporting structures 400 may be formed on the surface 201 of the protective lens 200 through a semiconductor process or a coating process, wherein each supporting structure 400 may be in a shape of a column, a sphere, or other irregular shape, and the height of each supporting structure 400 needs to be greater than the height of the grating structure 110, and it is understood that the height of the supporting structure 400 is a height value higher than the surface of the protective lens 200, wherein the height of the grating structure 110 ranges from 50 nanometers to 1 micrometer, and the height of the supporting structure 400 ranges from 1 micrometer to 30 micrometers.
To improve the impact resistance of the lens assembly, an orthographic projection of a plurality of support structures 400 on the optical waveguide glass 120 of the display lens 100 is disposed around the grating structure 120. When the protection lens 200 is deformed by impact, the plurality of supporting structures 400 can abut against the optical waveguide glass 120 to support the protection lens 200, so as to reduce the deformation degree of the protection lens 200 and prevent the protection lens 200 from being pressed to the grating structure 110 to damage the grating structure 110 due to the larger deformation degree.
In some embodiments, the orthographic projection of the plurality of support structures 400 on the optical waveguide glass 120 is arranged around the incoupling grating 1102 and/or the incoupling grating 1101, for example, the orthographic projection of the plurality of support structures 400 on the optical waveguide glass 120 may be formed around the incoupling grating 1101 and the incoupling grating 1102, or the orthographic projection of the plurality of support structures 400 on the optical waveguide glass 120 may be formed only around the incoupling grating 1101. It is to be understood that the location and number of support structures 400 in the illustrations are exemplary only and should not be construed as limiting the present application.
In some embodiments, the support structure 400 can be disposed on the surface of the display lens and the protective lens, please continue to refer to fig. 8, in which fig. 8 is a fourth cross-sectional view of the lens assembly along the direction P1-P1 according to the present invention.
The supporting structure 400 includes a first supporting structure 401 and a second supporting structure 402, the first supporting structure 401 is disposed on the surface of the protection lens 200 facing the display lens 100, the second supporting structure 402 is disposed on the surface of the display lens 100 facing the protection lens 200 at an interval with the grating structure 110, and the orthographic projection of the first supporting structure 401 on the display lens 100 is staggered from the grating structure 110.
In particular, the support structure 400 may include a plurality of first support structures 401 and a plurality of second support structures 402, to form a plurality of first support structures 401 on the surface 201 of the protective lens 200 by a semiconductor process or a coating process, a plurality of second support structures 402 are formed on the surface 101 of the display lens 100, wherein, the plurality of first support structures 401 and the plurality of second support structures 402 are cylindrical, spherical or other irregular shapes, to improve the impact resistance of the lens assembly 10, the height of each of the first support structure 401 and the second support structure 402 is greater than the height of the grating structure 110, it can be understood that the height of the support structure 400 and the height of the grating structure 110 are length values protruding from the receiving space 500, wherein, the height of the grating structure 110 may range between 50 nanometers and 1 micron, and the height of the first support structure 401 or the second support structure 401 may range between 1 micron and 30 microns. In order to avoid damage to the grating structure 110 by the first support structure 401 when the lens assembly 10 is deformed, the orthographic projection B of the optical waveguide glass 120 by the first support structure 401 is staggered from the grating structure 110, and in some embodiments, in order to improve the utilization rate of the accommodating space 500, the orthographic projection B of the optical waveguide glass 120 by the first support structure 401 is staggered from the second support structure 402 and the grating structure 110. When the lens assembly 10 receives an impact, the first support structures 401 abut against the optical waveguide glass 120, and the second support structures 402 abut against the surface 201 of the protection lens 200, so that the deformation degree of the protection lens or the display lens when the protection lens or the display lens is impacted can be reduced, and the impact resistance of the lens assembly can be further improved.
In some embodiments, after the display lens 100 and the protective lens 200 are fixedly connected by the connector 300, a fixedly connected lens assembly is obtained, and the light blocking portion 700 is disposed at the periphery of the fixedly connected lens assembly, wherein the material forming the light blocking portion may be a black light absorbing material, and is coated on the periphery of the fixedly connected lens assembly. The shading part is used for preventing the interference of ambient light on the display lens and influencing the display effect.
In some embodiments, a protective rubber frame may be further added to the periphery of the lens assembly, and since the periphery of the lens assembly is easily damaged, the lens assembly may be protected by the protective rubber frame, and the protective rubber frame may be made of a black light absorbing material, so that interference of ambient light may be prevented while the periphery of the lens assembly is protected.
The present application further provides a method for manufacturing a lens assembly, which is applied to the lens assembly, the lens assembly includes a protection lens, a display lens, a connecting member and a supporting structure, please refer to fig. 9, and fig. 9 is a schematic flow chart of the method for manufacturing the lens assembly according to the embodiment of the present application. The method comprises the following steps:
a grating structure is formed 601 on the surface of the display lens.
The display lens comprises optical waveguide glass, a grating structure can be formed on the optical waveguide glass by adopting a nano-imprinting technology, the grating structure can diffract incident light, wherein the grating structure can comprise an in-coupling grating and an out-coupling grating, diffracted light entering the optical waveguide glass enters the in-coupling grating, the diffracted light is totally reflected in the optical waveguide glass to the out-coupling grating, and the out-coupling grating guides the light to human eyes for imaging, exemplarily, the in-coupling grating or the out-coupling grating can be of various grating structures, such as a binary grating structure, a blazed grating structure or an inclined grating structure, the period of the in-coupling grating and the out-coupling grating can be 200 and 500 nanometers, the duty ratio range of the in-coupling grating and the out-coupling grating can be 0.2-0.8, the refractive index range of the optical waveguide glass can be 1.7-2.0, wherein the height of the grating structure may range from 50 nanometers to 1 micron.
In some embodiments, the structure of the coupling-out grating may be a two-dimensional grating structure, which may have a shape of a cylinder, a rhombus, or the like, and an optical function layer material, such as titanium dioxide or zirconium trioxide, is formed on the surface of the coupling-in grating or the coupling-out grating in order to improve the diffraction effect of the grating structure.
A support structure is formed between the display lens surface and the protective lens, the support structure having a height greater than the height of the grating structure 602.
In order to form a supporting structure on the surface of the display lens, a plurality of supporting structures are formed on the optical waveguide glass of the display lens through a semiconductor or micro-nano processing technology, the supporting structures may be columnar, spherical or other irregular shapes, the height range of the supporting structures may be between 1 micron and 30 microns, the height of the supporting structures needs to be greater than that of the grating structures, wherein the material of the supporting structures may be a material with high hardness, such as silicon dioxide or silicon nitride, or may be a material such as indium tin oxide, titanium dioxide or zirconium trioxide. Specifically, the material for forming the support structure may be disposed on the surface of the optical waveguide glass by chemical or physical sedimentation, so as to form a support structure with a certain height and a certain hardness. In some embodiments, in order to improve the impact resistance of the lens assembly, a plurality of support structures may be disposed around the coupling-out grating and/or the coupling-in grating, for example, a plurality of support structures may be formed around the coupling-out grating and/or the coupling-in grating according to a certain predetermined rule by the above method, when the protection lens is deformed by impact, the plurality of support structures may abut against the protection lens to support the protection lens, so as to reduce the deformation degree of the protection lens, and prevent the protection lens from being pressed to the grating structure to damage the grating structure due to the larger deformation degree.
In an example of forming the supporting structure on the surface of the protective lens, the supporting structure is disposed on the surface of the protective lens, and particularly, a plurality of supporting structures may be formed on the surface of the protective lens through a semiconductor process or a coating process, wherein each supporting structure may be in a shape of a cylinder, a sphere, or other irregular shape, a height of each supporting structure needs to be greater than a height of the grating structure, and in some embodiments, in order to improve the impact resistance of the lens assembly, an orthographic projection of the plurality of supporting structures on the optical waveguide glass of the display lens is disposed around the grating structure. When the protection lens piece receives the striking and takes place deformation, a plurality of bearing structure can support the protection lens piece with optical waveguide glass butt, reduce the deformation degree of protection lens piece, avoid the protection lens piece to destroy the grating structure because the great oppression of deformation degree is to the grating structure.
In an example of forming the supporting structure on both the surface of the display lens and the surface of the protective lens, the supporting structure may include a plurality of first supporting structures and a plurality of second supporting structures, wherein the plurality of first supporting structures and the plurality of second supporting structures are formed on the surface of the protective lens by a semiconductor process or a coating process, and the plurality of first supporting structures and the plurality of second supporting structures are in a shape of a column, a sphere or other irregular shape, and in order to improve the impact resistance of the lens assembly, the height of each of the first supporting structures and the second supporting structures is greater than the height of the grating structure, wherein in order to avoid the grating structure being damaged by the first supporting structures when the lens assembly is deformed, the orthographic projection of the first supporting structures on the optical waveguide glass is staggered with respect to the grating structure, and in some embodiments, in order to improve the utilization rate of the accommodating space, the orthographic projection of the first supporting structure on the optical waveguide glass is staggered with the second supporting structure and the grating structure. When the lens subassembly received the striking, a plurality of first bearing structure and optical waveguide glass butt, the deformation degree when a plurality of second bearing structure and protective glass piece received the striking can be reduced to protective glass piece or display lens piece, further improves the anti striking ability of lens subassembly.
603, connecting the protection lens and the display lens through a connecting piece, wherein the height of the connecting piece is larger than that of the supporting structure.
The connecting piece can be a colloid with connecting capacity, such as a curing adhesive or a pressure-sensitive adhesive, the connecting piece can be only arranged at the edge of the display lens, the edge of the protective lens is fixedly connected with the edge of the display lens through the connecting piece, the connecting piece can also be only arranged at the edge of the protective lens, the edge of the display lens is fixedly connected with the edge of the protective lens through the connecting piece, the connecting piece can also be arranged at the edges of the display lens and the protective lens, the edge of the display lens is fixedly connected with the edge of the protective lens through the connecting piece, it can be understood that the height range of the connecting piece can be between 30 micrometers and 500 micrometers, and the width range of the connecting piece can be between 1 micrometer and 100 micrometers. The height of the connecting members needs to be greater than the height of the support structure.
In some embodiments, after forming the support structure between the display lens surface and the protective lens, further comprising: the optical anti-reflection layer is arranged on the surface, opposite to the protective lens, of the protective lens, wherein the optical anti-reflection layer can reduce light loss caused by light reflection and enhance the transmission and passing rate of light, and therefore imaging quality is improved. The material for forming the optical anti-reflection layer can be silicon dioxide, silicon nitride or the like.
In some embodiments, after the protective lenses are connected by the connecting member, further comprising: and obtaining the fixedly connected lens assembly, and arranging a shading part at the periphery of the fixedly connected lens assembly, wherein the material for forming the shading part can be a black light absorption material, and the shading part is coated on the periphery of the fixedly connected lens assembly. The shading part is used for preventing the interference of ambient light on the display lens and influencing the display effect.
In some embodiments, a protective rubber frame may be further added to the periphery of the lens assembly, and since the periphery of the lens assembly is easily damaged, the lens assembly may be protected by the protective rubber frame, and the protective rubber frame may be made of a black light absorbing material, so that interference of ambient light may be prevented while the periphery of the lens assembly is protected.
It should be noted that the lens assembly in the embodiment of the present application may further include other protective structures, such as an explosion-proof layer, a buffer layer, and a protective frame, which are stacked on the outer surface of the protective lens.
Referring to fig. 10, fig. 10 is a schematic structural diagram of smart glasses according to an embodiment of the present application.
The smart glasses 20 may include the lens assembly 10 as described above, and may further include a glasses frame 21 and a glasses holder 31.
It should be noted that the structure of the glasses holder 31 shown in fig. 10 is only an example, for example, the glasses holder 31 may be replaced by a connecting band, as long as a connecting structure for fixing the smart glasses 20 to the human body can be realized, and the structure of the glasses holder 31 is not limited in the embodiment of the present application.
The embodiment of the application provides intelligent glasses, which comprise a lens assembly, wherein the lens assembly comprises a display lens, a protective lens, a connecting piece and a supporting structure, the display lens and the protective lens are arranged at intervals, and a grating structure is arranged on the surface, facing the protective lens, of the display lens; the connecting piece is used for connecting the protective lens and the display lens; the supporting structure is arranged between the protective lens and the display lens, and the height of the supporting structure is larger than that of the grating structure. The lens assembly, the manufacturing method and the smart glasses provided by the embodiment of the application are described in detail above. The principles and implementations of the present application are explained herein using specific examples, which are presented solely to assist in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (12)
1. A lens assembly, comprising:
protecting the lens;
the display lens is arranged at an interval with the protective lens, and a grating structure is arranged on the surface of the display lens facing the protective lens;
a connector for connecting the protective lens and the display lens; and
and the supporting structure is arranged between the protective lens and the display lens, and the height of the supporting structure is greater than that of the grating structure.
2. The lens assembly of claim 1, wherein the support structure is disposed on the display lens surface facing the protective lens surface and surrounding the grating structure.
3. The lens assembly of claim 2, wherein the grating structure includes an incoupling grating and an outcoupling grating, the support structure being disposed around the incoupling and/or outcoupling grating.
4. The lens assembly of claim 1, wherein the support structure is disposed on a surface of the protective lens facing the display lens, an orthographic projection of the support structure on the display lens surrounding the lenticular structure.
5. The lens assembly of claim 4, wherein the grating structure includes an in-coupling grating and an out-coupling grating, and an orthographic projection of the support structure on the display lens surrounds the in-coupling grating and/or the out-coupling grating.
6. The lens assembly of claim 1, wherein the support structure includes a first support structure disposed on a surface of the protective lens facing the display lens and a second support structure spaced apart from the grating structure disposed on a surface of the display lens facing the protective lens, the first support structure being offset from the grating structure in an orthographic projection of the display lens.
7. The lens assembly of any one of claims 1-6, wherein the grating structure has a height between 50 nanometers and 1 micron and the support structure has a height between 1 micron and 30 microns.
8. The lens assembly of any one of claims 1-6, wherein an opposing surface of the protective lens is provided with an optical antireflective layer.
9. The lens assembly of any of claims 1-6, wherein a peripheral edge of the lens assembly is provided with a light blocking portion for blocking ambient light.
10. A manufacturing method of a lens assembly is applied to the lens assembly, and is characterized in that the lens assembly comprises a protective lens, a display lens, a connecting piece and a supporting structure, and the method comprises the following steps:
forming a grating structure on a surface of the display lens;
forming a support structure between the display lens surface and the protective lens surface, the support structure having a height greater than a height of the grating structure;
and connecting the protective lens and the display lens through a connecting piece, wherein the height of the connecting piece is greater than that of the supporting structure.
11. The method of manufacturing according to claim 9, further comprising, after forming the support structure between the display lens surface and the protective lens surface:
arranging an optical anti-reflection layer on the surface opposite to the protective lens;
after the protective lens and the display lens are connected by the connector, the method further comprises:
a light shielding portion is provided at a periphery of the lens assembly.
12. A smart eyewear, the eyewear comprising:
an eyeglass assembly, the eyeglass assembly of any of claims 1-9; and
a spectacle frame upon which the lens assembly is disposed.
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