Smart contact lens

Abstract

PURPOSE: To provide a smart contact lens having an induction function and including an ultra-high frequency antenna having good performance.SOLUTION: A smart contact lens includes a visible area, an outer peripheral area, a signal source, an antenna assembly, an induction coil, a high pass filter, an induction module, and a low pass filter. The outer peripheral area encircles the visible area. The signal source is disposed in the outer peripheral area. The antenna assembly is disposed in the outer peripheral area and is connected to the signal source. The induction coil is disposed in the outer peripheral area and encircles the antenna assembly. The high pass filter is connected to the signal source and the induction coil. The induction module is disposed in the outer peripheral area. The low pass filter is connected to the induction coil and the induction module. The induction coil and the antenna assembly jointly resonate at an ultra-high frequency band, and the ultra-high frequency band is 902 to 928 MHz.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a smart contact lens, and particularly to a smart contact lens having an induction function and excellent antenna performance.

Background Art

[0002] Well-known smart contact lenses include elements such as an antenna, a chip, an induction module, and a battery. These elements must be arranged outside the visible region. Therefore, the space where these elements can be arranged is limited.

Summary of the Invention

Problems to be Solved by the Invention

[0003] When a smart contact lens having an intraocular pressure detection function uses an ultra-high frequency antenna, since both the ultra-high frequency antenna and the induction coil for intraocular pressure detection have a certain area, how to arrange the ultra-high frequency antenna and the induction coil in a limited space at the same time and realize an ultra-high frequency antenna with excellent performance has become an issue to be considered in this field.

Means for Solving the Problems

[0004] The present invention provides a smart contact lens having an induction function and an ultra-high frequency antenna with excellent performance.

[0005] The smart contact lens of the present invention includes a visible region, an outer peripheral region, a signal source, an antenna assembly, an induction coil, a high-pass filter, an induction module, and a low-pass filter. The outer peripheral region surrounds the visible region. The signal source is disposed in the outer peripheral region. The antenna assembly is disposed in the outer peripheral region and connected to the signal source. The induction coil is disposed in the outer peripheral region and surrounds the antenna assembly. The high-pass filter is connected to the signal source and the induction coil. The induction module is disposed in the outer peripheral region. The low-pass filter is connected to the induction coil and the induction module. The induction coil and the antenna assembly resonate jointly in the ultra-high frequency band, and the ultra-high frequency band is 902 MHz to 928 MHz.

[0006] The smart contact lens of the present invention includes a visible region, an outer peripheral region, a signal source, an antenna assembly, an induction coil, a first high-pass filter and a first switch, a second high-pass filter and a second switch, an induction module, and a low-pass filter. The outer peripheral region surrounds the visible region. The signal source is disposed in the outer peripheral region. The antenna assembly is disposed in the outer peripheral region and connected to the signal source. The induction coil is disposed in the outer peripheral region and surrounds the antenna assembly. The first high-pass filter and the first switch connect the signal source to the first position of the induction coil. The second high-pass filter and the second switch connect the signal source to the second position of the induction coil. The induction module is disposed in the outer peripheral region. The low-pass filter is connected to the induction coil and the induction module. The portion between the first position of the induction coil and the end and the antenna assembly resonate jointly in the first ultra-high frequency band when the first switch is closed and the second switch is open, and the portion between the second position of the induction coil and the end and the antenna assembly resonate jointly in the second ultra-high frequency band when the first switch is open and the second switch is closed. The first ultra-high frequency band and the second ultra-high frequency band are 865 MHz to 928 MHz.

[0007] In one embodiment of the present invention, the antenna assembly includes a first radiator, a second radiator, and a third radiator. The first radiator is connected to a signal source, and the second radiator is connected to a ground plane. The third radiator is connected to the first radiator and the second radiator. The first radiator and the second radiator are symmetrically arranged with respect to the third radiator.

[0008] In one embodiment of the present invention, the induction coil surrounds the first radiator and the second radiator. Slots are formed between the induction coil and the first radiator, and between the induction coil and the second radiator.

[0009] In one embodiment of the present invention, the first radiator includes a first segment and a second segment. The first segment is connected to the signal source and is closer to the induction coil than the second segment. The second radiator includes a third segment and a fourth segment. The third segment is connected to the ground plane and is closer to the induction coil than the fourth segment.

[0010] In one embodiment of the present invention, the high-pass filter includes a capacitive element, and the low-pass filter includes an inductive element.

Advantages of the Invention

[0011] As described above, the smart contact lens of the present invention surrounds the antenna assembly with an induction coil so that the induction coil and the antenna assembly can resonate jointly in the ultra-high frequency band. Therefore, due to the arrangement of the high-pass filter and the low-pass filter, the signals of the antenna assembly and the induction module are not affected. In this way, the smart contact lens can have an induction function, and at the same time, since the antenna has a sufficient radiator area, excellent antenna performance can be achieved. In addition, the smart contact lens can connect the high-pass filter and the switch to different positions of the induction coil, so that the antenna assembly and the induction coil can resonate jointly in the ultra-high frequency signals of different frequency bands, and thus can comply with the regulations of different regions.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0013] FIG. 1 is a schematic diagram of a smart contact lens according to one embodiment of the present invention. FIG. 2 is a schematic circuit diagram of the smart contact lens of FIG. 1. Referring to FIGS. 1 and 2, the smart contact lens 100 includes a visible region 110, an outer peripheral region 120, a signal source 130, an antenna assembly 140, an induction coil 150, a high-pass filter 160, an induction module 170, and a low-pass filter 180. The outer peripheral region 120 surrounds the visible region 110. The signal source 130, the antenna assembly 140, the induction coil 150, the high-pass filter 160, the induction module 170, and the low-pass filter 180 are disposed in the outer peripheral region 120. The antenna assembly 140 is connected to the signal source 130. The induction coil 150 surrounds the antenna assembly 140. The high-pass filter 160 is connected to the signal source 130 and the induction coil 150. The low-pass filter 170 is connected to the induction coil 150 and the induction module 170.

[0014] In this embodiment, the induction coil 150 and the antenna assembly 140 resonate together in the ultra-high frequency band, and the ultra-high frequency band is 902 MHz to 928 MHz.

[0015] In this embodiment, the antenna assembly 140 is a dipole antenna, but the present invention is not limited thereto. In other embodiments, the antenna assembly 140 may be a monopole antenna or a PIFA antenna. Further, in this embodiment, the high-pass filter 160 is a capacitive element, and the low-pass filter 180 is an inductive element, but the present invention is not limited thereto.

[0016] The antenna assembly 140 includes a first radiator 141, a second radiator 142, and a third radiator 143. The first radiator 141 is connected to the signal source 130, and the second radiator 142 is connected to the ground plane 190. The third radiator 143 is connected to the first radiator 141 and the second radiator 142. The first radiator 141 and the second radiator 142 are symmetrically arranged with respect to the third radiator 143.

[0017] It should be noted that in this embodiment, the first radiator 141 and the second radiator 142 form a dipole antenna. The third radiator 143 has an antenna matching function and is connected to the first radiator 141 and the second radiator 142.

[0018] The induction coil 150 surrounds the first radiator 141 and the second radiator 142. Slots 121 are formed between the induction coil 150 and the first radiator 141, and between the induction coil 150 and the second radiator 142. Since the induction coil 150 is arranged parallel to the first radiator 141 and the second radiator 142, a radio frequency signal resonating between the first radiator 141 and the second radiator 142 can be generated, thereby assisting the resonance of the first radiator 141 and the second radiator 142. With such a design, the induction coil 150 can maintain the required area, and the first radiator 141 and the second radiator 142 can have a sufficient radiator area. In this way, the smart contact lens 100 can have an induction function, and at the same time, the antenna assembly 140 can have excellent performance.

[0019] On the other hand, the first radiator 141 includes a first segment 1411 and a second segment 1412. The first segment 1411 is connected to the signal source 130 and is closer to the induction coil 150 than the second segment 1412. The second radiator 142 includes a third segment 1421 and a fourth segment 1422. The third segment 1421 is connected to the ground plane 190 and is closer to the induction coil 150 than the fourth segment 1422.

[0020] It should be noted that the first segment 1411 and the third segment 1421 close to the signal source 130 have stronger radiation energy compared to the second segment 1412 and the fourth segment 1422. Therefore, by arranging the first segment 1411 and the third segment 1421 near the induction coil 150, a better co-resonance effect can be achieved.

[0021] It should be mentioned that by arranging a high-pass filter 160 between the antenna assembly 140 and the induction coil 150, and arranging a low-pass filter 180 between the induction coil 150 and the induction module 170, the smart contact lens 100 can ensure that the low-frequency signal generated by the induction coil 150 during intraocular pressure detection enters the induction module 170 through the low-pass filter 180, enabling data collection. On the other hand, since the low-frequency signal is blocked by the high-pass filter 160, the probability of a short circuit caused by the low-frequency signal entering the antenna assembly 140 can be reduced.

[0022] Similarly, the high-frequency signal generated from the antenna assembly 140 enters the induction coil 150 through the high-pass filter 160. As a result, the portion between the position 151 and the end 152 of the induction coil 150 becomes the radiator of the antenna assembly 140, providing a certain radiator area for the antenna assembly 140. On the other hand, since the high-frequency signal is blocked by the low-pass filter 180, the probability of the high-frequency signal interfering with the signal of the induction module 170 can be reduced. With such a design, the smart contact lens 100 can have excellent induction effects and antenna performance.

[0023] Figure 3 is a schematic diagram of a smart contact lens according to another embodiment of the present invention. Figure 4 is a schematic circuit diagram of the smart contact lens of Figure 3. The main difference between the smart contact lens 100a of Figure 3 and the smart contact lens 100 of Figure 1 is that the smart contact lens 100a includes a first high-pass filter 160a, a first switch 161a, a second high-pass filter 160b, and a second switch 161b between the first radiator 141 and the induction coil 150. The difference will be described below.

[0024] The first high-pass filter 160a and the first switch 161a connect the signal source 130 to the first position 151a of the induction coil 150. The second high-pass filter 160b and the second switch 161b connect the signal source 130 to the second position 151b of the induction coil 150. The portion between the first position 151a of the induction coil 150 and the end 152 and the antenna assembly 140 resonate together in the first ultra-high frequency band when the first switch 161a is closed and the second switch 161b is open.

[0025] The portion between the second position 151b of the induction coil 150 and the end 152 and the antenna assembly 140 resonate together in the second ultra-high frequency band when the first switch 161a is open and the second switch 161b is closed. The first ultra-high frequency band and the second ultra-high frequency band are 865 MHz to 928 MHz.

[0026] It should be noted that the length of the induction coil 150 affects the range of the ultra-high frequency band generated when the induction coil 150 resonates with the antenna assembly 140. When the induction coil 150 is relatively long, the ultra-high frequency band in which the induction coil 150 and the antenna assembly 140 resonate jointly is lower than the ultra-high frequency band in which the short induction coil 150 and the antenna assembly 140 resonate jointly. That is to say, by adjusting the length of the induction coil 150, the smart contact lens 100a can be made to resonate in different ultra-high frequency bands with the induction coil 150 and the antenna assembly 140, so that it can comply with the regulations in different regions. For example, in the United States, the ultra-high frequency band is designated as 902 MHz to 928 MHz. In Europe, the ultra-high frequency band is designated as 865 MHz to 868 MHz.

[0027] In this embodiment, the resonance length of the induction coil 150 and the antenna assembly 140 becomes relatively long when the first switch 161a is closed and the second switch 161b is open. At this time, the ultra-high frequency band in which the induction coil 150 and the antenna assembly 140 resonate is 865 MHz to 868 MHz. When the first switch 161a is open and the second switch 161b is closed, the resonance length of the induction coil 150 and the antenna assembly 140 becomes relatively short. At this time, the ultra-high frequency band in which the induction coil 150 and the antenna assembly 140 resonate is 902 MHz to 928 MHz.

[0028] As described above, the smart contact lens of the present invention utilizes the co-resonance between the induction coil and the antenna assembly to enable the antenna assembly to have a sufficient radiator area even when the area of the antenna assembly is small. Such a design can provide an antenna assembly with excellent performance. Further, by arranging a high-pass filter between the induction coil and the antenna assembly and arranging a low-pass filter between the induction coil and the induction module, not only can the probability that the low-frequency signal generated by the induction coil affects the signal of the antenna assembly be reduced, but also the probability that the high-frequency signal generated by the antenna assembly affects the signal of the induction module can be reduced.

Industrial Applicability

[0029] By arranging a high-pass filter, connecting switches to different positions of the induction coil, and controlling the open / close position between the induction coil and the antenna assembly through the switches, the smart contact lens can be made to co-resonate jointly in ultra-high frequency signals of different frequency bands with antenna assemblies of different lengths and induction coils, so that it can comply with the regulations in different regions.

Explanation of Signs

[0030] 100, 100a Smart contact lens 110 Visible region 120 Outer peripheral region 121 Slot 130 Signal source 140 Antenna assembly 141~143 First~Third radiators 1411 First segment 1412 Second segment 1421 Third segment 1422 Fourth segment 150 Induction coil 151 Position 151a First position 151b Second position 152 terminal 160 high-pass filter 160a First high-pass filter 160b Second high-pass filter 161a First switch 161b Second switch 170 Inductive module 180 Low-pass filter 190 Ground plane

Claims

1. The visible area; A peripheral area surrounding the visible area; A signal source disposed in the outer circumferential region; an antenna assembly disposed in the perimeter region and connected to the signal source; an induction coil disposed in the outer periphery region and surrounding the antenna assembly; a high pass filter connected to the signal source and the induction coil; A guidance module disposed in the outer circumferential region; a low pass filter connected to the induction coil and the induction module; Including, the induction coil and the antenna assembly co-resonate in an ultra-high frequency range; The ultra-high frequency band is 902 MHz to 928 MHz. Smart contact lenses.

2. the antenna assembly includes a first radiator, a second radiator, and a third radiator; the first radiator is connected to the signal source; the second radiator is connected to a ground plane; the third radiator is connected to the first radiator and the second radiator; The first radiator and the second radiator are disposed symmetrically with respect to the third radiator.

2. The smart contact lens of claim 1.

3. the induction coil surrounds the first radiator and the second radiator; A slot is formed between the induction coil and the first radiator and between the induction coil and the second radiator.

3. The smart contact lens of claim 2.

4. the first radiator includes a first segment and a second segment; the first segment is connected to the signal source and is closer to the induction coil than the second segment; the second radiator includes a third segment and a fourth segment; the third segment is connected to the ground plane and is closer to the induction coil than the fourth segment; 3. The smart contact lens of claim 2.

5. the high-pass filter includes a capacitive element; the low pass filter includes an inductive element; 2. The smart contact lens of claim 1.

6. The visible area; A peripheral area surrounding the visible area; A signal source disposed in the outer circumferential region; an antenna assembly disposed in the perimeter region and connected to the signal source; an induction coil disposed in the outer periphery region and surrounding the antenna assembly; a first high pass filter and a first switch connecting the signal source to a first location of the induction coil; a second high pass filter and a second switch connecting the signal source to a second location of the induction coil; A guidance module disposed in the outer circumferential region; a low pass filter connected to the induction coil and the induction module; Including, a portion of the induction coil between the first location and the terminal and the antenna assembly co-resonate in a first superhigh frequency band with the first switch closed and the second switch open; a portion of the induction coil between the second location and the terminal and the antenna assembly co-resonate in a second superhigh frequency band with the first switch open and the second switch closed; The first and second ultra-high frequency bands are 865 MHz to 928 MHz; Smart contact lenses.

7. the antenna assembly includes a first radiator, a second radiator, and a third radiator; the first radiator is connected to the signal source; the second radiator is connected to a ground plane; the third radiator is connected to the first radiator and the second radiator; The first radiator and the second radiator are disposed symmetrically with respect to the third radiator.

7. The smart contact lens of claim 6.

8. the induction coil surrounds the first radiator and the second radiator; The smart contact lens of claim 7 , wherein slots are formed between the induction coil and the first radiator and between the induction coil and the second radiator.

9. the first radiator includes a first segment and a second segment; the first segment is connected to the signal source and is closer to the induction coil than the second segment; the second radiator includes a third segment and a fourth segment; The smart contact lens of claim 7 , wherein the third segment is connected to the ground plane and is closer to the induction coil than the fourth segment.

10. each of the first high-pass filter and the second high-pass filter includes a capacitive element; the low pass filter includes an inductive element; 7. The smart contact lens of claim 6.

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