Optical transparent antenna, AR glasses and VR glasses

Abstract

The utility model discloses an optical transparent antenna, which comprises a conductive base layer, a radiating antenna main body and a dielectric layer which are sequentially stacked, the radiating antenna main body is of a grid structure, and the radiating antenna main body comprises an antenna coupling branch knot, an antenna main radiating branch knot and a CPW monopole feed structure. The antenna coupling branch knot, the antenna main radiation branch knot and the CPW monopole feed structure are sequentially arranged, a coupling gap is formed between the antenna coupling branch knot and the antenna main radiation branch knot, the antenna main radiation branch knot is of a groove-shaped structure, the side edge of the groove-shaped structure extends towards the antenna coupling branch knot, the bottom of the groove-shaped structure is arranged close to the CPW monopole feed structure, and the CPW monopole feed structure is arranged close to the antenna coupling branch knot. The bottom of the groove-shaped structure is connected with the CPW monopole feed structure, and the antenna coupling branch knot and the antenna main radiation branch knot are the same in structure and are arranged in a mirror image mode. The utility model also discloses AR glasses and VR glasses provided with the optical transparent antenna. And wireless transmission between equipment such as a PC and a mobile phone and AR glasses / VR glasses can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of antenna, especially relates to an optical transparent antenna, AR glasses and VR glasses. BACKGROUND

[0002] Augmented reality (AR) uses digital visual technology to combine real world with virtual objects, and virtual reality (VR) makes users in virtual world have a sense of being in the scene. In recent years, the application demand of AR and VR has increased sharply. More and more developers are committed to the development and research of virtual digital technology in education and life application, and these technology products include AR / VR head-mounted glasses.

[0003] At present, the head-mounted AR / VR system needs a built-in computer (PC) to process data and display information. They are bulky and energy-consuming, which means that the AR / VR system can only be applied under certain conditions, such as connecting the AR / VR glasses with a PC / base station through a cable, which limits the movement of the AR / VR in the use process and makes the application not universal. Therefore, the 5G wireless data processing framework is adopted in the AR / VR glasses, and the wireless transmission technology is used to make the AR / VR glasses interact with the PC / base station, so that the device is more lightweight and convenient for movement.

[0004] However, the existing technology usually connects the AR / VR glasses with mobile devices such as PC / mobile phone through cable to realize data transmission, which causes movement restriction to the user and limits the application environment. UTILITY MODEL CONTENT

[0005] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide an optical transparent antenna, AR glasses and VR glasses, which realize wireless transmission between PC, mobile phone and other devices and AR glasses / VR glasses.

[0006] To achieve the above purpose, the utility model adopts the technical scheme that:

[0007] An optical transparent antenna comprises a conductive base layer, a radiating antenna main body and a dielectric layer arranged in sequence, the radiating antenna main body is a grid structure, the radiating antenna main body comprises an antenna coupling branch, an antenna main radiation branch and a CPW monopole feeding structure, the antenna coupling branch, the antenna main radiation branch and the CPW monopole feeding structure are arranged in sequence, the antenna coupling branch and the antenna main radiation branch have a coupling gap, the antenna main radiation branch is a slot type structure, the side of the slot type structure extends towards the antenna coupling branch, the bottom of the slot type structure is arranged close to the CPW monopole feeding structure, and the bottom of the slot type structure is connected with the CPW monopole feeding structure, and the structure of the antenna coupling branch is the same as that of the antenna main radiation branch and is arranged in mirror image.

[0008] Optionally, the bottom of the slot type structure is perpendicular to the side.

[0009] Optionally, the middle position of the bottom of the slot type structure is connected with the CPW monopole feeding structure.

[0010] Optionally, the CPW monopole feeding structure comprises a columnar radiator and a ground plate arranged on both sides of the columnar radiator, one end of the columnar radiator is connected with the bottom of the slot type structure, and the ground plate and the columnar radiator and the ground plate and the antenna main radiation branch have CPW feeding gaps therebetween.

[0011] Another technical scheme adopted by the utility model is:

[0012] An AR (Augmented Reality) glasses comprises a support, a frame and a lens, the frame is symmetrically arranged on the left and right sides of the support, the lens is arranged on the frame, further comprises the optical transparent antenna, the optical transparent antenna is arranged on the lens, and the optical transparent antennas on the left and right sides are symmetrically arranged.

[0013] Optionally, the lens serves as the dielectric layer.

[0014] Optionally, the length of the glasses is 143mm in the left-right direction and the width is 50mm in the up-down direction, the length of the frame is 63mm and the width is 50mm, the distance between the frames is 17mm, and the length of the optical transparent antenna is 48mm and the width is 40mm.

[0015] Another technical scheme adopted by the utility model is:

[0016] A VR (Virtual Reality) glasses comprises a support, a frame and a lens, the frame is symmetrically arranged on the left and right sides of the support, the lens is arranged on the frame, further comprises the optical transparent antenna, the optical transparent antenna is arranged on the lens, and the optical transparent antennas on the left and right sides are symmetrically arranged.

[0017] Optionally, the lens serves as the dielectric layer.

[0018] Optionally, the side of the lens is the length of the left and right direction, the width of the up and down direction, the overall length and width size of the side of the VR glasses is 143mm*50mm, the length and width size of the frame is 63mm*50mm, the spacing between the frames is 17mm, and the length and width size of the optical transparent antenna is 48mm*40mm.

[0019] The utility model discloses the beneficial effect lies in:

[0020] The antenna coupling branch and antenna main radiation branch adopt slot (SLOT) structure and mirror image setting, for improving radiation efficiency and gain, expanding working frequency band, improving impedance matching performance, and reducing sidelobe and radiation asymmetry, thereby avoiding bandwidth reduction or radiation directivity loss caused by over coupling, and the SLOT gap structure also effectively reduces the use area of antenna low-frequency radiation. The radiation antenna main body adopts a grid (MESH) structure, has better light transparency, can be effectively applied to AR / VR glasses, and realizes wireless transmission between PC, mobile phone and AR glasses / VR glasses. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Fig. 1 is a side view of the optical transparent antenna of the utility model embodiment one;

[0022] Figure 2 Fig. 2 is a top view of the optical transparent antenna of the utility model embodiment one;

[0023] Figure 3 Fig. 3 is the S parameter simulation result of the optical transparent antenna of the utility model embodiment one;

[0024] Figure 4 Fig. 4 is the efficiency diagram of the optical transparent antenna of the utility model embodiment one;

[0025] Figure 5 Fig. 5 is the gain diagram of the optical transparent antenna of the utility model embodiment one in the 2.4GHz frequency band;

[0026] Figure 6 Fig. 6 is the gain diagram of the optical transparent antenna of the utility model embodiment one in the 2.5GHz frequency band;

[0027] Figure 7 Fig. 7 is the gain diagram of the optical transparent antenna of the utility model embodiment one in the 5.125GHz frequency band;

[0028] Figure 8 Fig. 8 is the gain diagram of the optical transparent antenna of the utility model embodiment one in the 5.825GHz frequency band;

[0029] Figure 9The shown is the gain graph of the optical transparent antenna of the embodiment one of the utility model in 6GHz frequency band;

[0030] Figure 10 The shown is the gain graph of the optical transparent antenna of the embodiment one of the utility model in 7.125GHz frequency band;

[0031] Figure 11 The shown is the gain curve graph of each frequency band of the optical transparent antenna of the embodiment one of the utility model;

[0032] Figure 12 The shown is the envelope correlation coefficient (ECC) curve graph of the optical transparent antenna of the embodiment one of the utility model;

[0033] Figure 13 The shown is the isolation curve graph of the optical transparent antenna of the embodiment one of the utility model;

[0034] Figure 14 The shown is the structure schematic diagram of the AR glasses of the embodiment two and the VR glasses of the embodiment three. DETAILED DESCRIPTION

[0035] In order to more clearly understand the technical content, the purpose and the effect of the utility model, the utility model is described in detail below by combining with the specific implementation mode and the drawing. It needs to be explained that the implementation mode and the feature in the implementation mode of the utility model can be combined mutually in the case of no conflict. In the following description, a lot of specific details are described so as to understand the utility model fully, and the described implementation mode is only a part of the implementation mode of the utility model, and is not all the implementation mode. Based on the implementation mode in the utility model, all other implementation modes obtained by the person skilled in the art without making the creative labor are within the protection scope of the utility model.

[0036] Please refer to Figures 1-13 The shown is the embodiment one of the utility model:

[0037] An optical transparent antenna, including conductive base layer 1, radiation antenna main body 2 and dielectric layer 3 that are arranged in sequence, as Figure 1 The shown.

[0038] The radiation antenna body 2 is a grid structure, and the radiation antenna body 2 comprises an antenna coupling branch 21, an antenna main radiation branch 22 and a CPW monopole feeding structure 23, which are sequentially arranged, and the antenna coupling branch 21 and the antenna main radiation branch 22 are provided with a coupling gap 24. The antenna main radiation branch 22 is a groove structure, the bottom of the groove structure is perpendicular to the side, the side of the groove structure extends towards the antenna coupling branch 21, that is, the opening of the groove structure faces the antenna coupling branch 21, and the bottom of the groove structure is arranged close to the CPW monopole feeding structure 23. The structure of the antenna coupling branch 21 is the same as that of the antenna main radiation branch 22 and is mirror arranged. The CPW monopole feeding structure 23 comprises a columnar radiator and a ground plate arranged on both sides of the columnar radiator, one end of the columnar radiator is connected to the middle position of the bottom of the groove structure, and the ground plate and the columnar radiator and the ground plate and the antenna main radiation branch 22 are provided with CPW feeding gaps. As shown in Figure 2 .

[0039] In a preferred arrangement, the conductive base layer adopts PET material, the radiation antenna body adopts nano-copper material, and the dielectric layer adopts resin glass (COC) material. The COC material is a relatively common lens material at present, the nano-copper metal grid is attached to the PET conductive base material as the radiation antenna body, and is combined with the COC through adhesive glue to avoid any damage to the antenna performance. It should be noted that the actual application is not limited to the above materials.

[0040] As shown in Figure 3 , the S parameter simulation results of the optical transparent antenna of the embodiment are shown. As can be seen from the figure, the return loss of the optical transparent antenna of the embodiment is less than -6dB, and the antenna can cover the WIFI communication frequency band from 2.4GHz to 7.125GHz. Compared with the S parameter, the antenna with the coupling branch structure effectively expands the working bandwidth compared with the antenna without the coupling branch structure.

[0041] As shown in Figure 4 , the efficiency diagram of the optical transparent antenna of the embodiment is shown. As can be seen from the figure, the efficiency of each frequency band of the antenna of the embodiment is more than 50%, and the antenna radiation with the coupling branch is significantly improved by more than 20% at low frequency. The antenna has good radiation characteristics and can be applied to a WIFI communication system.

[0042] As shown in Figures 5-10 , the gain diagrams of the optical transparent antenna of the embodiment at 2.4GHz, 2.5GHz, 5.125GHz, 5.825GHz, 6GHz and 7.125GHz frequency bands are shown, Figure 11The gain curve of each frequency band is shown, and it can be seen from the drawing that the antenna of the embodiment is an omnidirectional antenna at 2.4GHz, 2.5GHz, 5.125GHz, 5.825GHz, 6GHz and 7.125GHz, and has good omnidirectionality in WIFI communication at each working frequency band.

[0043] As shown in Figure 12 The envelope correlation coefficient (ECC) curve of the optical transparent antenna of the embodiment is shown, and it can be seen from the drawing that the antenna of the embodiment is less than 0.02 in the full frequency band, and has good spatial multiplexing, so that the MIMO antennas in the 2.4GHz to 7.125GHz frequency band have good coupling effect, and the antenna of the embodiment is a WIFI MIMO antenna.

[0044] As shown in Figure 13 The isolation curve of the optical transparent antenna of the embodiment is shown, and the isolation of the WIFI MIMO optical transparent antenna of the embodiment is below-20dB, and the improvement is most obvious in the low frequency case.

[0045] As shown in Figure 14 The second embodiment of the utility model is:

[0046] An AR glasses, including support, glasses frame and lens, the left and right sides of the support symmetrically are provided with glasses frame, lens is located on glasses frame, still include above-mentioned optical transparent antenna, optical transparent antenna is located on lens, lens as medium layer, two sides of optical transparent antenna symmetrically are provided.

[0047] With left and right direction as length, up and down direction as width, the side of lens is 143mm*50mm in overall length and width size of AR glasses, the length and width size of glasses frame is 63mm*50mm, the spacing between glasses frame is 17mm, the length and width size of optical transparent antenna is 48mm*40mm, namely the length and width size of lens is 48mm*40mm.

[0048] As shown in Figure 14 The third embodiment of the utility model is:

[0049] A VR glasses, including support, glasses frame and lens, the left and right sides of the support symmetrically are provided with glasses frame, lens is located on glasses frame, still include above-mentioned optical transparent antenna, optical transparent antenna is located on lens, lens as medium layer, two sides of optical transparent antenna symmetrically are provided.

[0050] With the left and right direction as length, the up and down direction as width, the side surface of the VR glasses on which the lens is located has a whole length and width size of 143mm*50mm, the length and width size of the frame is 63mm*50mm, the interval between the frames is 17mm, and the length and width size of the optical transparent antenna is 48mm*40mm, that is, the length and width size of the lens is 48mm*40mm.

[0051] In summary, the optical transparent antenna, the AR glasses and the VR glasses have the following advantages:

[0052] (1) The WIFI communication frequency band from 2.4GHz to 7.125GHz can be fully covered.

[0053] (2) The slot structure and the mirror image are adopted, the low-frequency radiation area of the antenna is effectively reduced, the radiation efficiency and the gain are improved, the working frequency band is expanded, the impedance matching performance is improved, the bandwidth reduction or the radiation directivity loss caused by over coupling is avoided.

[0054] (3) The metal copper grid structure has better light transparency.

[0055] (4) The WIFI MIMO design can improve the actual application data transmission rate.

[0056] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, so any modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment, which does not deviate from the technical scheme content of the utility model, still belongs to the range of the technical scheme of the utility model.

Claims

1. An optically transparent antenna, characterized by, The antenna comprises a conductive base layer, a radiation antenna main body and a dielectric layer which are sequentially stacked, the radiation antenna main body is a grid structure, the radiation antenna main body comprises an antenna coupling branch, an antenna main radiation branch and a CPW monopole feeding structure, the antenna coupling branch, the antenna main radiation branch and the CPW monopole feeding structure are sequentially arranged, the antenna coupling branch and the antenna main radiation branch have a coupling gap, the antenna main radiation branch is a slot structure, the side of the slot structure extends towards the antenna coupling branch, the bottom of the slot structure is arranged close to the CPW monopole feeding structure, and the bottom of the slot structure is connected with the CPW monopole feeding structure, and the structure of the antenna coupling branch is the same as that of the antenna main radiation branch and is mirror arranged.

2. The optically transparent antenna of claim 1, wherein, The bottom of the slot structure is perpendicular to the side.

3. The optically transparent antenna of claim 1, wherein, The middle position of the bottom of the slot structure is connected with the CPW monopole feeding structure.

4. The optically transparent antenna of claim 1, wherein, The CPW monopole feeding structure comprises a columnar radiator and a ground plate arranged on both sides of the columnar radiator, one end of the columnar radiator is connected with the bottom of the slot structure, and the ground plate and the columnar radiator and the antenna main radiation branch have CPW feeding gaps.

5. An AR glasses, comprising a support, a frame and a lens, the frame is symmetrically arranged on the left and right sides of the support, and the lens is arranged on the frame, characterized in that, The optical transparent antenna is arranged on the lens, and the optical transparent antennas on both sides are symmetrically arranged.

6. The AR glasses of claim 5, wherein, The lens serves as the dielectric layer.

7. The AR glasses of claim 5, wherein, The length of the lens in the left-right direction is 143mm, the width of the lens in the up-down direction is 50mm, the length of the frame in the left-right direction is 63mm, the width of the frame in the up-down direction is 50mm, the distance between the frames is 17mm, and the length of the optical transparent antenna in the left-right direction is 48mm and the width of the optical transparent antenna in the up-down direction is 40mm.

8. A VR glasses, comprising a support, a frame and a lens, the frame is symmetrically arranged on the left and right sides of the support, and the lens is arranged on the frame, characterized in that, The optical transparent antenna is arranged on the lens, and the optical transparent antennas on both sides are symmetrically arranged.

9. The VR glasses of claim 8, wherein, The lens serves as the dielectric layer.

10. The VR glasses of claim 8, wherein, The length of the lens in the left-right direction is 143mm, the width of the lens in the up-down direction is 50mm, the length of the frame in the left-right direction is 63mm, the width of the frame in the up-down direction is 50mm, the distance between the frames is 17mm, and the length of the optical transparent antenna in the left-right direction is 48mm and the width of the optical transparent antenna in the up-down direction is 40mm.

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