Optical waveguide lens and display device

Abstract

The invention provides an optical waveguide lens and a display device. The optical waveguide lens comprises a waveguide sheet, a protection sheet and an annular adhesive layer. The protection sheet is used for protecting the diffraction microstructure on the surface of the waveguide sheet; the annular adhesive layer is arranged along the edge area of the waveguide sheet or the protection sheet, the annular adhesive layer is provided with at least one first through hole, and the waveguide sheet and the protection sheet are bonded and connected through the annular adhesive layer. The first through hole of the annular adhesive layer can ensure that the surface type is flat when the waveguide sheet and the protection sheet are attached, so that the problem that the optical structure of the optical waveguide lens is changed due to the uneven surface type is avoided.

Description

Technical Field

[0001] The present application relates to the field of optical waveguide technology, and in particular to an optical waveguide lens and a display device. Background Art

[0002] In the existing technology of packaging optical waveguide lenses, closed OCA (Optically Clear Adhesive), that is, optical tape or optical double-sided adhesive, is usually used to bond the waveguide sheet and the protective sheet used to protect the diffraction microstructure on the waveguide sheet. However, since the closed optical tape or optical double-sided adhesive has good sealing performance, it is difficult to maintain the flatness of the surface of the waveguide sheet and / or the protective sheet during the bonding process, which can easily cause the optical structure of the optical waveguide lens to change. Summary of the invention

[0003] The present application provides an optical waveguide lens and a display device, aiming to avoid the problem of uneven surface of the waveguide sheet and / or the protective sheet caused when the waveguide sheet and the protective sheet are bonded by optical tape or optical double-sided adhesive.

[0004] In a first aspect, the present application provides an optical waveguide lens, comprising:

[0005] A waveguide plate, the surface of which is provided with a diffraction microstructure;

[0006] A protection sheet, used for protecting the diffraction microstructure on the surface of the waveguide sheet;

[0007] The annular adhesive layer is arranged along the edge area of ​​the waveguide sheet or the protective sheet, and the annular adhesive layer has at least one first through hole, wherein the waveguide sheet and the protective sheet are bonded and connected by the annular adhesive layer.

[0008] In one example, a first end of the first through hole faces a region between the waveguide sheet and the protection sheet, and a second end of the first through hole faces an exterior of the optical waveguide sheet.

[0009] In one example, the first end of the first through hole does not face the light propagation region and the diffraction microstructure on the waveguide plate.

[0010] In one example, the shape of the first through hole from the first end to the second end is one of a wave shape, a broken line shape, an "S" shape, a "J" shape, and a "bow" shape.

[0011] In one example, a length of the first through hole in a first direction is greater than or equal to 0.1 micrometers and less than or equal to 300 micrometers, a length of the first through hole in a second direction is greater than or equal to 0.1 millimeters and less than or equal to 10 millimeters, the first direction is perpendicular to the optical waveguide lens, and the second direction is perpendicular to the first direction.

[0012] In one example, the distance between the first through hole and the diffractive microstructure disposed in the coupling-in region of the waveguide plate is smaller than the distance between the first through hole and the diffractive microstructure disposed in the coupling-out region of the waveguide plate.

[0013] In one embodiment, the number of waveguide plates is at least two, and a diffraction microstructure is provided on the surface of each waveguide plate;

[0014] An annular adhesive layer is arranged between the waveguide sheet adjacent to the protection sheet and the protection sheet, annular adhesive layers are arranged between adjacent waveguide sheets, and at least one annular adhesive layer has a first through hole.

[0015] In one example, each annular adhesive layer has a first through hole.

[0016] In one example, except for the waveguide sheet at the outermost side of the optical waveguide lens, the remaining waveguide sheets are all provided with second through holes, and one of the annular adhesive layers has a first through hole.

[0017] In a second aspect, the present application further provides a display device, comprising an optical engine and an optical waveguide lens as provided in the first aspect, wherein the optical waveguide lens is used to transmit the optical signal emitted from the optical engine to a target area in a directionally directed manner.

[0018] The present application provides an optical waveguide lens and a display device, wherein a waveguide sheet and a protective sheet of the optical waveguide lens are bonded and connected by an annular adhesive layer, and at least one first through hole is provided in the annular adhesive layer, so that the waveguide sheet and the protective sheet can ensure a flat surface when they are bonded together, thereby avoiding the problem of changes in the optical structure of the optical waveguide lens due to an uneven surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1a It is a schematic diagram of an explosion of an optical waveguide lens in the prior art;

[0021] Figure 1b for Figure 1a A cross-sectional view of the provided optical waveguide lens;

[0022] Figure 2a A schematic diagram of an annular adhesive layer 13 in an optical waveguide lens provided in an embodiment of the present application;

[0023] Figure 2b An exploded schematic diagram of an optical waveguide lens provided in one embodiment of the present application;

[0024] Figure 2c for Figure 2b A side view of the provided optical waveguide lens;

[0025] Figure 3 A partial schematic diagram of a ring-shaped adhesive layer is provided for one embodiment of the present application;

[0026] Figure 4a A partial enlarged view of an annular adhesive layer provided in another embodiment of the present application;

[0027] Figure 4b A partial enlarged view of the annular adhesive layer provided in another embodiment of the present application;

[0028] Figure 4c A partial enlarged view of the annular adhesive layer provided in yet another embodiment of the present application;

[0029] Figure 5 An exploded schematic diagram of an optical waveguide lens provided in yet another embodiment of the present application;

[0030] Figure 6 A schematic diagram of the structure of a display device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0033] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] Please refer to Figure 1a and Figure 1b , Figure 1a FIG. 1 is an exploded schematic diagram of an optical waveguide lens 10 in the prior art. Figure 1b for Figure 1a A cross-sectional view of a light guide lens 10 is provided.

[0035] As shown in the figure, in the prior art, a closed annular adhesive layer 13, such as OCA (Optically Clear Adhesive), is arranged around the edge of the waveguide sheet 12 so that the waveguide sheet 12 and the protective sheet 11 can be bonded, so that the protective sheet 11 can protect the diffraction microstructure arranged on the surface of the waveguide sheet 12; however, during the bonding process, since the closed annular adhesive layer 13 has good sealing performance, it is difficult to maintain the flatness of the surface of the waveguide sheet 12 and the protective sheet 11, which easily leads to uneven surfaces of the protective sheet 11 and the waveguide sheet 12 in the bonded optical waveguide lens 10, thereby changing the optical structure of the optical waveguide lens 10.

[0036] Please refer to Figure 2a , Figure 2b as well as Figure 2c , Figure 2a This is a schematic diagram of the annular adhesive layer 13 in the optical waveguide lens 10 provided in one embodiment of the present application. Figure 2b This is an exploded schematic diagram of an optical waveguide lens 10 provided in one embodiment of the present application. Figure 2c for Figure 2b A side view of a light guide optic 10 is provided.

[0037] As shown in the figure, the optical waveguide lens 10 includes a waveguide plate 12, a protective plate 11 and an annular adhesive layer 13. The surface of the waveguide plate 12 is provided with a diffraction microstructure so that the waveguide plate 12 can couple, propagate and couple out light; the protective plate 11 is used to protect the diffraction microstructure on the surface of the waveguide plate 12. When the waveguide sheet 12 and the protective sheet 11 are packaged to obtain the optical waveguide lens 10, an annular adhesive layer 13 is provided on the surface of the waveguide sheet 12 facing the protective sheet 11 and along the edge area of ​​the waveguide sheet 12, or an annular adhesive layer 13 is provided on the edge area of ​​the surface of the protective sheet 11 facing the waveguide sheet 12, so that the waveguide sheet 12 and the protective sheet 11 can be bonded and fixed by the annular adhesive layer 13 to complete the packaging of the optical waveguide lens 10, wherein the annular adhesive layer 13 has at least one first through hole 131, so that when the waveguide sheet 12 and the protective sheet 11 are bonded by the annular adhesive layer 13, the air pressure between the waveguide sheet 12 and the protective sheet 11 can be close to the atmospheric pressure, so that the waveguide sheet 12 and / or the protective sheet 11 will not be affected by the atmospheric pressure and deformed, so as to achieve the effect of keeping the surface of the waveguide sheet 12 and the protective sheet 11 flat.

[0038] Exemplarily, the glue used in the annular adhesive layer 13 is one of double-sided tape, OCA, and liquid glue that can be cured, and at least one first through hole 131 is left in the annular adhesive layer 13, so that there is still a gap between the protection sheet 11 and the waveguide sheet 12 after bonding, so that when the protection sheet 11 and the waveguide sheet 12 are bonded under the action of external force, the air pressure between the protection sheet 11 and the waveguide sheet 12 can be close to the atmospheric pressure, thereby avoiding deformation of the protection sheet 11 and / or the waveguide sheet 12 due to the internal and external pressure difference caused by the air pressure between the protection sheet 11 and the waveguide sheet 12 being much greater than or less than the atmospheric pressure during or after the bonding process.

[0039] It should be understood that a plurality of first through holes 131 can be provided on the annular adhesive layer 13 to achieve the purpose of balancing the air pressure, and the first through holes 131 can be provided at any position of the annular adhesive layer 13 , and the present application does not limit the number and position of the first through holes 131 .

[0040] In one example, a first end of the first through hole 131 faces a region between the waveguide sheet 12 and the protection sheet 11 , and a second end of the first through hole 131 faces the outside of the optical waveguide sheet 10 .

[0041] It can be understood that the first through hole 131 connects the cavity between the waveguide sheet 12 and the protective sheet 11 with the outside of the optical waveguide lens 10, so that the air outside the optical waveguide lens 10 can enter the cavity between the waveguide sheet 12 and the protective sheet 11, so that the air pressure of the cavity between the waveguide sheet 12 and the protective sheet 11 is close to the atmospheric pressure, thereby avoiding the uneven surface of the waveguide sheet 12 and / or the protective sheet 11 due to the pressure difference between the cavity between the waveguide sheet 12 and the protective sheet 11 and the atmosphere during bonding.

[0042] In one example, the first end of the first through hole 131 does not face the light propagation region and the diffraction microstructure on the waveguide plate 12 .

[0043] In a specific implementation process, after the protective sheet 11 and the waveguide sheet 12 are bonded together by the annular adhesive layer 13 having the first through hole 131, the bonded lens is sealed by black glue or sealant to obtain the optical waveguide lens 10. In the process of applying the black glue or sealant, the black glue or sealant may enter the cavity between the waveguide sheet 12 and the protective sheet 11 through the first through hole 131. Therefore, even if the black glue or sealant is accidentally sprayed in through the first through hole 131, since the first end of the first through hole 131 is not facing the light propagation area and the diffraction microstructure on the waveguide sheet 12, the black glue or sealant will not contaminate the diffraction microstructure and the optical path on the waveguide sheet 12.

[0044] In one example, the length of the first through hole 131 in the first direction is greater than or equal to 0.1 micrometers and less than or equal to 300 micrometers, and the length of the first through hole 131 in the second direction is greater than or equal to 0.1 millimeters and less than or equal to 10 millimeters. The first direction is perpendicular to the optical waveguide lens 10, and the second direction is perpendicular to the first direction.

[0045] Exemplarily, the first direction is the height of the first through hole 131 , and the second direction is the width of the first through hole 131 .

[0046] By setting the size of the first through hole 131, the annular adhesive layer 13 can bond the protective sheet 11 and the waveguide sheet 12, and when spraying black glue or sealant, even if black glue or sealant is accidentally sprayed in from the first through hole 131, the spraying amount can be effectively reduced, thereby achieving the purpose of protecting the diffraction microstructure and optical path on the waveguide sheet 12.

[0047] It can be understood that the boundaries on both sides of the first through hole 131 can be parallel straight line boundaries or non-parallel straight line boundaries, and the present application does not limit the relationship between the boundaries of the first through hole 131.

[0048] See also Figure 3 , Figure 3 A partial schematic diagram of the annular adhesive layer 13 is provided for one embodiment of the present application.

[0049] like Figure 3 As shown, in one example, the distance between the first through hole 131 and the diffraction microstructure disposed in the coupling-in region of the waveguide plate 12 is smaller than the distance between the first through hole 131 and the diffraction microstructure disposed in the coupling-out region of the waveguide plate 12 .

[0050] Exemplarily, the first through hole 131 is provided in the annular adhesive layer 13, and the distance between the first through hole 131 and the diffraction microstructure provided in the coupling region of the waveguide sheet 12 is smaller than the distance between the first through hole 131 and the diffraction microstructure provided in the coupling region of the waveguide sheet 12. It should be understood that in the process of packaging the optical waveguide lens 10 into AR glasses, the coupling region of the waveguide sheet 12 will be packaged into the temple of the AR glasses, so the first through hole 131 will be blocked by the temple shell to prevent external impurities such as dust from entering the optical waveguide lens 10. In addition, the first end of the first through hole 131 is not facing the diffraction microstructure of the waveguide sheet 12 and the light propagation region A including the coupling region a, so that when spraying black glue or sealant, it can be prevented that the black glue or sealant contaminates the diffraction structure and / or light path on the waveguide sheet 12.

[0051] See also Figure 4a , Figure 4b and Figure 4c , Figure 4a A partial enlarged view of the annular adhesive layer 13 provided in another embodiment of the present application; Figure 4bA partial enlarged view of the annular adhesive layer 13 provided in another embodiment of the present application; Figure 4c This is a partial enlarged view of the annular adhesive layer 13 provided in yet another embodiment of the present application.

[0052] In one example, the shape of the first through hole 131 from the first end to the second end is one of a wave shape, a broken line shape, an “S” shape, a “J” shape, and a “bow” shape.

[0053] Understandably, the waves are Figure 4a As shown, the broken line is Figure 4b As shown, in addition to the above-mentioned situations, the trend shape from the first end to the second end of the first through hole 131 provided in the present application can also be other curved shapes, such as Figure 4c The maze shape shown is understandably a type of broken line shape. It should be noted that the present application does not limit the specific shape of the first through hole 131 from the first end to the second end.

[0054] It should be noted that the first through holes 131 may be located in the same horizontal plane or may not be located in the same horizontal plane, and the horizontal plane is parallel to the plane where the waveguide plate 12 is located. For example, Figure 4a , Figure 4b and Figure 4c It can be a projection diagram from the first end to the second end on the horizontal plane, and in the actual setting, Figure 4a , Figure 4b and Figure 4c The trend shape shown has a height difference, that is, when the annular adhesive layer 13 is viewed horizontally from the side, the height at which the first end is located is different from the height at which the second end is located, but the first end is still connected to the second end, so that the protective sheet 11 and / or the waveguide sheet 12 are subjected to the same internal and external pressure difference. It should be understood that the trend with a height difference can also prevent the black glue or sealant from entering the cavity between the waveguide sheet 12 and the protective sheet 11 through the first through hole 131 during spraying. This application does not limit whether the trend from the first end to the second end has a height difference.

[0055] By setting the running shape from the first end to the second end of the first through hole 131 to a curved shape, even if black glue or sealant enters the first through hole 131 during spraying, the curved shape of the first through hole 131 can block the black glue or sealant in the first through hole 131 without directly entering the cavity between the waveguide plate 12 and the protective plate 11.

[0056] In one embodiment, there are at least two waveguide plates 12, and the surface of each waveguide plate 12 is provided with a diffraction microstructure; an annular adhesive layer 13 is provided between the waveguide plate 12 adjacent to the protective plate 11 and the protective plate 11, and an annular adhesive layer 13 is provided between adjacent waveguide plates 12, and at least one annular adhesive layer 13 has a first through hole 131.

[0057] Exemplarily, the optical waveguide lens 10 is composed of a protective sheet 11 and multiple waveguide sheets 12, and the surface of each waveguide sheet 12 is provided with a diffraction structure. It can be understood that the protective sheet 11 and the multiple waveguide sheets 12 are stacked in sequence, and the waveguide sheet 12 adjacent to the protective sheet 11 is bonded to the protective sheet 11 through an annular adhesive layer 13. Similarly, adjacent waveguide sheets 12 are also bonded through the annular adhesive layer 13.

[0058] It should be understood that at least one annular adhesive layer 13 has a first through hole 131 so that the air pressure in the cavity of the optical waveguide lens 10 can be balanced with the atmospheric pressure when the optical waveguide lens 10 is bonded, thereby protecting the surface of the protection sheet 11 and each waveguide sheet 12 to be flat.

[0059] In one example, each annular adhesive layer 13 has a first through hole 131 .

[0060] It can be understood that each annular adhesive layer 13 has a first through hole 131, so that the air pressure in the cavity between the waveguide plate 12 adjacent to the protective plate 11 and the protective plate 11 can be balanced with the atmospheric pressure, and the air pressure in the cavity between adjacent waveguide plates 12 can also be balanced with the atmospheric pressure, so as to keep the surface of the protective plate 11 and each waveguide plate 12 flat when the protective plate 11 and the waveguide plate 12 are bonded.

[0061] See also Figure 5 , Figure 5 This is an exploded schematic diagram of an optical waveguide lens 10 provided in yet another embodiment of the present application.

[0062] like Figure 5 As shown, except for the waveguide sheet 12 at the outermost side of the optical waveguide lens 10 , the remaining waveguide sheets 12 are all provided with second through holes 132 , and one of the annular adhesive layers 13 has a first through hole 131 .

[0063] It can be understood that, except for the waveguide sheet 12 on the outermost side of the optical waveguide lens 10, the remaining waveguide sheets 12 are provided with second through holes 132 so that the air pressure in the cavity between the waveguide sheets 12 in the optical waveguide lens 10 can be balanced, and by providing a first through hole 131 in one of the annular adhesive layers 13, the air pressure in the cavity of the optical waveguide lens 10 can be balanced with the atmospheric pressure, so as to keep the surface of the protective sheet 11 and the waveguide sheets 12 flat when bonding.

[0064] In a specific implementation, the annular adhesive layer 13 between the waveguide sheet 12 adjacent to the protection sheet 11 and the protection sheet 11 has a first through hole 131 ; the diameter of the second through hole 132 is less than or equal to 5 mm.

[0065] A second through hole 132 is provided in the remaining waveguide sheets 12 except the outermost waveguide sheet 12 of the optical waveguide lens 10, and a first through hole 131 is provided in one of the annular adhesive layers 13, so that the air pressure in the cavity of the optical waveguide lens 10 can be balanced with the atmospheric pressure, and the risk and amount of black glue spraying can be greatly reduced when spraying black glue.

[0066] The optical waveguide lens 10 provided by the present application, by setting the first through hole 131 in the annular adhesive layer 13, enables the air pressure of the cavity between the protective sheet 11 and the waveguide sheet 12 to be balanced with the atmospheric pressure, so that the surface shape can be guaranteed to be flat when the protective sheet 11 and the waveguide sheet 12 are bonded together, and the optical structure of the optical waveguide lens 10 is guaranteed not to be changed. At the same time, by setting the position and shape of the first through hole 131, the problem of black glue or sealant entering the cavity between the protective sheet 11 and the waveguide sheet 12 and contaminating the waveguide sheet 12 is avoided when spraying black glue or sealant.

[0067] In another embodiment, during the packaging of the optical waveguide lens 10, the first through hole 131 may be filled first, for example, by transparent glue or a plugging sheet, or by using a patch to stick to the second end of the first through hole 131, and then black glue or sealant may be sprayed after the first through hole 131 is blocked, thereby preventing the black glue or sealant from entering the cavity between the protective sheet 11 and the waveguide sheet 12 through the first through hole 131.

[0068] See also Figure 6 , Figure 6 A schematic diagram of the structure of a display device provided in one embodiment of the present application.

[0069] like Figure 6 As shown, the present application also provides a display device, which includes an optical machine and an optical waveguide lens 10, wherein the optical waveguide lens 10 is the optical waveguide lens 10 provided by any of the above embodiments; the optical waveguide lens 10 is used to transmit the optical signal emitted by the optical machine to the target area in a directed manner.

[0070] Exemplarily, the optical waveguide lens 10 can couple the optical signal emitted by the optical machine to the optical waveguide lens 10, and realize light coupling out in the coupling-out area of ​​the optical waveguide lens 10, so that the user wearing the display device can observe the corresponding image in the target area. Specifically, the display device is, for example, AR glasses.

[0071] It should be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0072] It should also be understood that the term "and / or" used in the specification of this application and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations. It should be noted that, in this article, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "including a..." does not exclude the presence of other identical elements in the process, method, article or system including the element.

[0073] The serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments. The above description is only a specific implementation mode of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An optical waveguide lens, characterized in that: include: A waveguide plate, the surface of which is provided with a diffraction microstructure; A protection sheet, used to protect the diffraction microstructure on the surface of the waveguide sheet; An annular adhesive layer is arranged along the edge area of ​​the waveguide sheet or the protective sheet, and the annular adhesive layer has at least one first through hole, wherein the waveguide sheet and the protective sheet are bonded and connected by the annular adhesive layer.

2. The optical waveguide lens according to claim 1, wherein: A first end of the first through hole faces a region between the waveguide sheet and the protection sheet, and a second end of the first through hole faces an outside of the optical waveguide sheet.

3. The optical waveguide lens according to claim 2, wherein: The first end of the first through hole does not face the light propagation area on the waveguide plate and the diffraction microstructure.

4. The optical waveguide lens according to claim 1, wherein: The shape of the first through hole from the first end to the second end is one of a wave shape, a broken line shape, an "S" shape, a "J" shape, and a "bow" shape.

5. The optical waveguide lens according to any one of claims 1 to 4, characterized in that: The length of the first through hole in the first direction is greater than or equal to 0.1 micrometer and less than or equal to 300 micrometers, the length of the first through hole in the second direction is greater than or equal to 0.1 millimeter and less than or equal to 10 millimeters, the first direction is perpendicular to the optical waveguide lens, and the second direction is perpendicular to the first direction.

6. The optical waveguide lens according to any one of claims 1 to 4, characterized in that: The distance between the first through hole and the diffraction microstructure provided in the coupling-in region of the waveguide plate is smaller than the distance between the first through hole and the diffraction microstructure provided in the coupling-out region of the waveguide plate.

7. The optical waveguide lens according to any one of claims 1 to 4, characterized in that: The number of the waveguide plates is at least two, and the surface of each of the waveguide plates is provided with a diffraction microstructure; The annular adhesive layer is provided between the waveguide sheet adjacent to the protection sheet and the protection sheet, the annular adhesive layer is provided between adjacent waveguide sheets, and at least one of the annular adhesive layers has the first through hole.

8. The optical waveguide lens according to claim 7, wherein: Each of the annular adhesive layers has the first through hole.

9. The optical waveguide lens according to claim 7, wherein: Except for the waveguide sheet at the outermost side of the optical waveguide lens, the remaining waveguide sheets are all provided with second through holes, and one of the annular adhesive layers has the first through hole.

10. A display device, characterized in that: The display device comprises an optical machine and an optical waveguide lens as described in any one of claims 1 to 9, wherein the optical waveguide lens is used for directionally transmitting the optical signal emitted from the optical machine to a target area.

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