CN111538157A

CN111538157A - AR (augmented reality) lens, preparation method of AR lens and AR glasses

Info

Publication number: CN111538157A
Application number: CN202010409007.4A
Authority: CN
Inventors: 张礼冠; 吴模信; 田舒韵
Original assignee: Nanchang OFilm Display Technology Co Ltd
Current assignee: Jiangxi Xinfei New Material Co ltd; Jiangxi Zhanyao Microelectronics Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-08-14
Anticipated expiration: 2040-05-14
Also published as: CN111538157B

Abstract

The invention provides an AR lens, comprising a transparent substrate, wherein the transparent substrate comprises a first surface and a second surface which are opposite; the driving lead is arranged on the first surface of the transparent substrate; the light source is arranged on the first surface of the transparent substrate and connected to the driving lead; a first anti-reflection film arranged on the first surface of the transparent substrate and covering the light source and the driving wires; the second anti-reflection film is arranged on the second surface of the transparent substrate. The invention also provides a preparation method of the AR lens and AR glasses.

Description

AR (augmented reality) lens, preparation method of AR lens and AR glasses

Technical Field

The invention relates to the technical field of AR (augmented reality) glasses, in particular to an AR lens, a preparation method of the AR lens and the AR glasses.

Background

With the development of science and technology, people have more and more entertainment ways, the Augmented Reality (AR) technology is gradually applied to video entertainment, and people can obtain more pleasurable experience through AR glasses.

The AR lens is a core component of the AR glasses, and the process of the conventional AR lens is to fabricate a conductive circuit on one side of a Polyethylene terephthalate (PET) substrate, attach a light source to the PET substrate, and attach the PET to one side of a glass bottom plate through an optical transparent adhesive. However, in the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art: the thickness of the AR lens manufactured by the manufacturing process is thick, the manufacturing process is more, the manufacturing cost of the AR glasses is higher, the user experience is poorer, and the user requirements cannot be met.

Disclosure of Invention

In view of the above, it is necessary to provide an AR lens, a method for manufacturing an AR lens, and AR glasses to solve the above problems.

An embodiment of the present application provides an AR lens, including:

a transparent substrate comprising opposing first and second surfaces;

the driving lead is arranged on the first surface of the transparent substrate;

the light source is arranged on the first surface of the transparent substrate and connected to the driving lead;

a first anti-reflection film arranged on the first surface of the transparent substrate and covering the light source and the driving wires;

the second anti-reflection film is arranged on the second surface of the transparent substrate.

In this embodiment, through directly setting up the drive wire in one side of transparent substrate, and this drive wire is used for the light source provides the electric current, compares in traditional AR lens, and this AR glasses have reduced the material loss of PET and transparent adhesive tape, have saved the cost, and have reduced the thickness of AR lens.

In some embodiments, the driving wire is any one of a copper wire, an aluminum alloy, indium tin oxide, IAI, tin, silver, and a transfer-type transparent conductive film. The corresponding type can be selected according to actual requirements, such as visibility, conductivity and process difficulty, so as to meet different types of requirements.

In some embodiments, the thickness of the AR lens is 0.9mm to 1.0 mm. The AR lens is in the thickness range, the AR lens only comprises a four-layer structure of a transparent substrate, a driving wire, a first anti-reflection film and a second anti-reflection film, and the thickness of the AR lens is reduced by about 0.195mm compared with the total thickness of the conventional 1.112 mm.

In some embodiments, the thickness of the drive wire satisfies: 5-50 μm. The thickness of the driving wire is controlled to prevent the driving wire from affecting the visibility of the AR lens. This thickness range can satisfy the feasibility of the process while also allowing for the visibility of the AR lens.

In some embodiments, the width of the drive conductor satisfies: 5-50 μm.

The width of the driving wire is controlled to prevent the driving wire from affecting the visibility of the AR lens. This width range can satisfy the feasibility of the process while also allowing for the visibility of the AR lens.

An embodiment of the present application also provides a method for preparing an AR lens, including:

providing a transparent substrate comprising opposing first and second surfaces;

manufacturing a driving lead, wherein the driving lead is arranged on the first surface of the transparent substrate;

attaching a first anti-reflection film, wherein the first anti-reflection film is arranged on the first surface of the transparent substrate and covers one sides of the driving wires and the light source far away from the transparent substrate;

and attaching a second anti-reflection film, wherein the second anti-reflection film is arranged on the second surface of the transparent substrate.

In this embodiment, directly set up the preparation drive wire through one side at transparent substrate, and this drive wire is used for doing the light source provides the electric current, compares in the preparation process of the traditional AR lens, and this application has saved the process steps of making the drive wire on PET and on the attached transparent substrate of transparent adhesive tape, has reduced the material loss of unnecessary PET and transparent adhesive tape, has saved the cost, has reduced the thickness of AR lens.

In some embodiments, the driving wire is manufactured by a yellow light process, wherein the driving wire is any one of a copper wire, an aluminum alloy, indium tin oxide, IAI, and a transfer-printing type transparent conductive film; or the like, or, alternatively,

and manufacturing the driving lead by utilizing a screen printing process, wherein the driving lead is any one of tin and silver. Therefore, the corresponding support can be selected to manufacture the corresponding driving lead according to the actual requirements, such as visibility, conductivity and process difficulty, so as to meet the requirements of different types

In some embodiments, the thickness of the driving wire is 5 μm to 50 μm. The thickness of the driving wire is controlled to prevent the driving wire from affecting the visibility of the AR lens. This thickness range can satisfy the feasibility of the process while also allowing for the visibility of the AR lens.

In some embodiments, the width of the driving wire is 5 μm to 50 μm. The width of the driving wire is controlled to prevent the driving wire from affecting the visibility of the AR lens. This width range can satisfy the feasibility of the process while also allowing for the visibility of the AR lens.

The application also provides AR glasses simultaneously, including the AR lens that any embodiment provided above provided.

The application provides AR glasses compare in traditional AR glasses, and thickness is less, and the cost is lower, and is visual better.

Drawings

Fig. 1 is a perspective view of an AR lens according to a first embodiment of the present invention.

Fig. 2 is a perspective exploded view of the AR lens shown in fig. 1.

Fig. 3 is a flowchart of a method of manufacturing an AR lens according to a second embodiment of the present invention.

Description of the main elements

AR lens 100

Transparent substrate 10

First surface 11

Second surface 12

Drive lead 20

Light source 30

Second anti-reflection film 40

First anti-reflection film 50

Flexible circuit board 60

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is further noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Referring to fig. 1, a first embodiment of the invention provides an AR lens 100, and the AR lens 100 can be applied to AR glasses.

Referring to fig. 1 and 2, the AR lens 100 includes a transparent substrate 10, a driving wire 20, a light source 30, a first anti-reflection film 50, and a second anti-reflection film 40.

Specifically, the transparent substrate 10 includes a first surface 11 and a second surface 12 opposite to each other, the driving wire 20 is disposed on the first surface 11 of the transparent substrate 10, the light source 30 is disposed on one side of the first surface 11 of the transparent substrate 10 and connected to the driving wire 20, the driving wire 20 is used for providing current for the light source 30, the first anti-reflection film 50 is disposed on the first surface 11 of the transparent substrate 10 and covers the light source 30 and the driving wire 20, the second anti-reflection film 40 is disposed on the second surface 12 of the transparent substrate 10, and the first anti-reflection film 50 and the second anti-reflection film 40 are used for reducing reflected light on the surface of the transparent substrate 10, so as to increase light transmittance of the transparent substrate 10, and further improve visual effect of the AR lens 100, so as to enhance user.

Further, in the embodiment, the driving wires 20 are directly formed on one side of the first surface 11 of the transparent substrate 10, so that the process flow is reduced, the efficiency is improved, the material cost is saved, and the product thickness is reduced.

In one embodiment, the thickness of the AR lens 100 is 0.9mm to 1.0mm, and the AR lens 100 includes only four layers of the transparent substrate 10, the driving wires 20, the first anti-reflection film 50 and the second anti-reflection film 40, which is thinner by about 0.195mm compared to the existing total thickness of 1.112 mm.

In this embodiment, the first surface 11 is a user-use surface.

In one embodiment, the transparent substrate 10 is a glass lens. Of course, the material of the transparent substrate 10, such as a sapphire lens, can be replaced according to actual requirements.

In one embodiment, the thickness of the transparent substrate 10 is between 700 μm and 1000 μm to meet the thickness requirements of different types of AR lenses 100.

Referring to fig. 2, in the present embodiment, the driving wires 20 are distributed in a petal shape. It is understood that in other embodiments, the driving wires 20 are distributed in a ring shape along the outer periphery of the first surface 11, so as to reduce the visual effect of the driving wires 20 on the user, so as to improve the visibility of the AR lens 100, and of course, the driving wires 20 may also select other presentation manners, such as a ring shape, a polygonal shape, etc., according to the arrangement and visual effect of the light sources 30.

In some embodiments, the driving wire 20 is any one of copper, aluminum alloy, indium tin oxide, IAI (ITO + AG + ITO), tin, silver, and a transfer type transparent conductive film.

The copper is low in price and good in conductivity, but the copper wire circuit is poor in light transmission, clear in outline and poor in visibility; the aluminum alloy is an alloy which takes aluminum as a base and is added with a certain amount of other alloying elements, the conductivity is not as good as that of copper, but the aluminum alloy has certain light transmittance, and the aluminum alloy has unobvious lines and better oxidation resistance; the conductivity of the indium tin oxide is not as good as that of aluminum alloy, but the light transmittance is better, and the indium tin oxide circuit is not obvious; the IAI comprises stacked indium tin oxide, silver and indium tin oxide, and the coating process is complex, but the conductivity and the visibility are good; the transfer printing type transparent conductive film is TCTF (transparent conductive transfer film), a conductive fine circuit can be formed through exposure and alkaline development, the manufacturing process is simple, coating is not needed, the conductivity is good, but the conductive circuit of the transfer printing type transparent conductive film is thick and the adhesive force is poor. Different drive conductors 20 may be selected according to different requirements.

In one embodiment, the thickness of the driving wire 20 satisfies 5 μm to 50 μm. By controlling the thickness of the drive wire 20, the drive wire 20 is prevented from affecting the visibility of the AR lens 100. This thickness range can satisfy the feasibility of the process while also allowing for the visibility of the AR lens.

In one embodiment, the width of the driving wire 20 satisfies 5 μm to 50 μm. To prevent the drive wires 20 from affecting the visual experience of the user. By controlling the width of the drive wire 20, the drive wire 20 is prevented from affecting the visibility of the AR lens 100. This width range can satisfy the feasibility of the process while also allowing for the visibility of the AR lens.

In one embodiment, the resistance of the driving wires 20 is in a range of 20 ohms to 50 ohms, so as to ensure the current carrying capacity of the conductive plate externally connected to the driving wires 20.

In one embodiment, the Light source 30 is a Light-emitting diode (LED). The plurality of light sources 30 are annularly arranged to ensure uniformity of light emitted from the light sources 30.

In one embodiment, the thicknesses of the first and second

anti-reflection films

50 and 40 satisfy: 10nm to 100 nm.

In one embodiment, the first anti-reflection film 50 and the second anti-reflection film 40 have the same structure, and the first anti-reflection film 50 and the second anti-reflection film 40 are each any one of a magnesium fluoride film, a zirconium dioxide film, and an aluminum oxide film.

In one embodiment, the AR lens 100 further includes a flexible circuit board 60, and the flexible circuit board 60 is connected to the driving wires 20 for supplying current to the driving wires 20.

Referring to fig. 3, a second embodiment of the invention provides a method for preparing an AR lens 100, which includes the following steps.

Step S101, a transparent substrate 10 is provided.

Therein, the transparent substrate 10 includes opposing first and

second surfaces

11, 12.

In one embodiment, the transparent substrate 10 is circular, and in other embodiments, the transparent substrate 10 can be square or other shapes.

In one embodiment, the thickness of the transparent substrate 10 is 700 μm to 1000 μm to meet the thickness requirements of different types of AR lenses 100.

In step S102, the driving wire 20 is manufactured.

Wherein, the driving wires 20 are disposed on the first surface 11 of the transparent substrate 10.

In some embodiments, the driving wires 20 are made of any one of copper, aluminum alloy, indium tin oxide, IAI, and transfer type transparent conductive film, and the driving wires 20 can be formed on the transparent substrate 10 by a photolithography process. The yellow light process comprises the steps of film pressing, exposure, development, etching, film stripping and the like.

In some embodiments, the driving wires 20 are made of any one of tin and silver, and the driving wires 20 can be made by a screen printing process. Among them, screen printing is also called screen printing.

In an embodiment, the first surface 11 of the transparent substrate 10 is screen printed with solder paste, and the solder circuit is formed after reflow soldering, so that the light source 30 is attached to the solder circuit, thereby saving the soldering process of the light source 30.

In one embodiment, the thickness of the driving wires 20 is 5 μm to 50 μm. By controlling the thickness of the drive wire 20, the drive wire 20 is prevented from affecting the visibility of the AR lens 100. This thickness range can satisfy the feasibility of the process while also allowing for the visibility of the AR lens.

In one embodiment, the width of the driving wires 20 is 5 μm to 50 μm. To prevent the drive wires 20 from affecting the visual experience of the user. By controlling the width of the drive wire 20, the drive wire 20 is prevented from affecting the visibility of the AR lens 100. This width range can satisfy the feasibility of the process while also allowing for the visibility of the AR lens.

In step S103, the light source 30 is attached.

Wherein, the light source 30 is attached to the first surface 11 of the transparent substrate 10 and the light source 30 is connected to the driving wires 20.

In one embodiment, the light source 30 can be attached to one side of the first surface 11 of the transparent substrate 10 by screen printing solder paste or silver paste.

In one embodiment, the light source 30 is an LED. Preferably, the light source 30 is a Micro-LED, which is annularly arranged to ensure that the light source 30 emits uniform light.

Step S104, the first anti-reflection film 50 is attached.

Specifically, the first anti-reflection film 50 is attached to the first surface 11 of the transparent substrate 10, and the first anti-reflection film 50 covers the driving wires 20 and the light source 30 at a side away from the transparent substrate 10.

Step S105, the second anti-reflection film 40 is attached.

Specifically, the second anti-reflection film 40 is provided on the second surface 12 of the transparent substrate 10.

In one embodiment, the thickness of the AR lens 100 is 0.9mm to 1.0 mm. The AR lens 100 is within this thickness range, and the AR lens 100 includes only four layers of the transparent substrate 10, the driving wires 20, the first anti-reflection film 50 and the second anti-reflection film 40, which are thinned by about 0.195mm compared with the conventional total thickness of 1.112 mm.

In the preparation method of the AR lens 100 provided in the above embodiment, the driving wires 20 are directly fabricated on one side of the transparent substrate 10, so that compared with the conventional fabrication process of the AR lens 100, the process flow is reduced: the process flow of manufacturing the driving wires 20 on the PET and adhering the driving wires to the transparent substrate 10 through the transparent adhesive is reduced, the material cost of the PET and the transparent adhesive is saved, the thickness of the AR lens 100 is reduced, and the visual experience of a user is improved.

A third embodiment of the present application provides an AR glasses (not shown) including the AR lens 100 provided in any of the above embodiments. The thickness of AR lens 100 of this AR glasses is less, has promoted the visuality, has promoted user's visual experience.

A fourth embodiment of the present application provides AR glasses (not shown) including an AR lens 100 prepared by the method for preparing an AR lens provided in any one of the above embodiments. The thickness of AR lens 100 of this AR glasses is less, has promoted the visuality, has promoted user's visual experience.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An AR lens, comprising:

a transparent substrate comprising opposing first and second surfaces;

the driving lead is arranged on the first surface of the transparent substrate;

2. The AR lens of claim 1, wherein: the driving wire is any one of a copper wire, an aluminum alloy, indium tin oxide, IAI, tin, silver and a transfer printing type transparent conductive film.

3. The AR lens of claim 1 or 2, wherein: the thickness of the AR lens is 0.9 mm-1.0 mm.

4. The AR lens of claim 1 or 2, wherein: the thickness of the driving lead is 5-50 μm.

5. The AR lens of claim 1 or 2, wherein: the width of the driving lead is 5-50 μm.

6. A method of preparing an AR lens, comprising:

the bonding light source is arranged on the first surface of the transparent substrate and connected to the driving lead;

7. The method of claim 6, wherein:

manufacturing the driving wire by a yellow light process, wherein the driving wire is any one of a copper wire, an aluminum alloy, indium tin oxide, IAI and a transfer printing type transparent conductive film;

or the like, or, alternatively,

and manufacturing the driving lead by utilizing a screen printing process, wherein the driving lead is any one of tin and silver.

8. The production method according to claim 6 or 7, characterized in that: the thickness of the driving lead is 5-50 μm.

9. The production method according to claim 6 or 7, characterized in that: the width of the driving lead is 5-50 μm.

10. AR glasses comprising the AR lens of any of claims 1-5.