CN117918838A - Detection device and detection method - Google Patents

Abstract

A detection device for detecting an eyeball comprises: a frame element, a transceiver, and a contact lens element. The transceiver is disposed on the frame element and can transmit a first radio frequency signal. The contact lens element comprises a resonator, wherein the resonator can convert the first radio frequency signal into a first ultrasonic signal, and the first ultrasonic signal can be transmitted to the eyeball. The resonator can further convert a second ultrasonic signal from the eyeball into a second radio frequency signal, and the transceiver can further receive the second radio frequency signal.

Description

Detection device and detection method

Technical Field

The present invention relates to a detection device, and more particularly to a detection device and a detection method.

Background technique

In traditional designs, the stress level of the user can be determined by analyzing the heart rate variability (HRV). However, since the analysis of heart rate variability is usually based on 200 to 500 consecutive heartbeat signals, the delay time (e.g., about 3 to 8 minutes) will make it difficult for the user to obtain real-time feedback reports of biological information. In view of this, it is necessary to propose a new solution to overcome the difficulties faced by existing technologies.

Summary of the invention

In a preferred embodiment, the present invention proposes a detection device for detecting an eyeball, and comprises: a frame element; a transceiver, which is disposed on the frame element and transmits a first radio frequency signal; and a contact lens element, comprising a resonator, wherein the resonator converts the first radio frequency signal into a first ultrasonic signal, and the first ultrasonic signal is transmitted to the eyeball; wherein the resonator further converts a second ultrasonic signal from the eyeball into a second radio frequency signal, and the transceiver further receives the second radio frequency signal.

In some embodiments, the detection device further includes: a processor coupled to the transceiver, wherein the processor estimates a current state of the eyeball by analyzing the second RF signal.

In some embodiments, the current state of the eye includes a pupil diameter.

In some embodiments, the frame element is an augmented reality glasses frame.

In some embodiments, the first RF signal and the second RF signal both operate in a WLAN (Wireless Local Area Network) band, a Bluetooth band, or a NFC (Near Field Communication) band.

In some embodiments, the resonator is implemented by a Film Bulk Acoustic Resonator (FBAR).

In some embodiments, the resonator is implemented by a high-overtone bulk acoustic resonator (HBAR).

In some embodiments, the resonator includes: an antenna element including a first radiation metal portion and a second radiation metal portion; and a piezoelectric layer disposed between the first radiation metal portion and the second radiation metal portion.

In some embodiments, the resonator further includes: a hydrogel layer adjacent to the antenna element and the piezoelectric layer.

In some embodiments, the antenna element is a dipole antenna.

In some embodiments, the thickness of the piezoelectric layer is substantially equal to 0.5 times the wavelength of the first ultrasonic signal or the second ultrasonic signal.

In some embodiments, the thickness of the piezoelectric layer is between 1 μm and 3 μm.

In some embodiments, the first ultrasonic signal enters the eyeball vertically, causing the eyeball to generate the second ultrasonic signal.

In another preferred embodiment, the present invention proposes a detection method, comprising the following steps: transmitting a first radio frequency signal through a transceiver; converting the first radio frequency signal into a first ultrasonic signal through a resonator of a contact lens element, wherein the first ultrasonic signal is transmitted to one eyeball; converting a second ultrasonic signal from the eyeball into a second radio frequency signal through the resonator of the contact lens element; and receiving the second radio frequency signal through the transceiver.

In some embodiments, the detection method further includes: estimating a current state of the eyeball by analyzing the second radio frequency signal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram showing a detection device according to an embodiment of the present invention.

FIG. 2 shows a perspective view of a contact lens element and an eyeball according to an embodiment of the present invention.

FIG. 3A shows a front view of an eyeball according to an embodiment of the present invention.

FIG. 3B shows a front view of an eyeball according to an embodiment of the present invention.

FIG. 3C shows a front view of an eyeball according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of a resonator according to an embodiment of the present invention.

FIG. 5 is a flow chart showing a detection method according to an embodiment of the present invention.

Symbol Description:

100: Detection device

110:Frame element

120: Transceiver

130: Contact lens element

140,440:Resonator

150: Processor

190: Eyeball

460: Antenna element

461: First radiation metal part

462: Second radiation metal part

470: Piezoelectric layer

475: Sandwich structure

480: Hydrogel layer

D1, D2, D3: pupil diameter

H1:Thickness

S510, S520, S530, S540: Steps

SF1: First RF signal

SF2: Second radio frequency signal

SU1: First ultrasonic signal

SU2: Second ultrasonic signal

Detailed ways

In order to make the purpose, features and advantages of the present invention more clearly understood, specific embodiments of the present invention are given below and described in detail with reference to the accompanying drawings.

Certain words are used in the specification and the scope of the patent application to refer to specific components. It should be understood by those skilled in the art that hardware manufacturers may use different terms to refer to the same component. This specification and the scope of the patent application do not use the difference in name as a way to distinguish components, but use the difference in function of the components as the criterion for distinction. The words "include" and "including" mentioned throughout the specification and the scope of the patent application are open-ended terms and should be interpreted as "including but not limited to". The word "substantially" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and achieve the basic technical effect. In addition, the word "coupled" in this specification includes any direct and indirect electrical connection means. Therefore, if the text describes a first device coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device via other devices or connection means.

The following disclosure provides many different embodiments or examples to implement the different features of the present invention. The following disclosure describes specific examples of various components and their arrangements to simplify the description. Of course, these specific examples are not intended to be limiting. For example, if the present disclosure describes a first feature formed on or above a second feature, it means that it may include an embodiment in which the first feature and the second feature are in direct contact, and may also include an embodiment in which an additional feature is formed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. In addition, different examples in the following disclosure may reuse the same reference symbols or (and) marks. These repetitions are for the purpose of simplification and clarity, and are not intended to limit the specific relationship between the different embodiments or (and) structures discussed.

In addition, spatially related terms such as "below," "below," "lower," "above," "higher," and similar terms are used to facilitate description of the relationship between one element or feature and another element or feature in the diagram. In addition to the orientation shown in the drawings, these spatially related terms are intended to include different orientations of the device in use or operation. The device may be turned to different orientations (rotated 90 degrees or other orientations), and the spatially related terms used herein may be interpreted accordingly.

FIG. 1 shows a schematic diagram of a detection device 100 according to an embodiment of the present invention. The detection device 100 can be applied to a head mounted device or a mobile device, such as an augmented reality glasses (AR Glasses), a smart phone (Smart Phone), a tablet computer (Tablet Computer), or a notebook computer (Notebook Computer), but is not limited thereto. In the embodiment of FIG. 1 , the detection device 100 at least includes: a frame element (Frame Element) 110, a transceiver (Transceiver) 120, and a contact lens element (Contact Lens Element) 130. It must be understood that, although not shown in FIG. 1 , the detection device 100 may further include other components, such as: a housing (Housing), a speaker (Speaker), or (and) a power supply module (Power Supply Module).

In some embodiments, the detection device 100 can be used to detect an eyeball 190. It should be noted that the eyeball 190 is not a part of the detection device 100. In other embodiments, the detection device 100 can also be used to detect other parts of the human body.

The shape and type of the frame element 110 are not particularly limited in the present invention. In some embodiments, the frame element 110 may be an extended reality (XR) glasses frame. For example, the aforementioned extended reality may include virtual reality (VR), mixed reality (MR), or (and) augmented reality (AR).

For example, the transceiver 120 may be a radar module. The transceiver 120 is disposed on the frame element 110, wherein the transceiver 120 may transmit a first radio frequency (RF) signal SF1. The contact lens element 130 includes a resonator 140. The resonator 140 may convert the first RF signal SF1 into a first ultrasonic signal SU1, wherein the first ultrasonic signal SU1 may be transmitted to the eyeball 190. Then, the resonator 140 may further convert a second ultrasonic signal SU2 from the eyeball 190 into a second RF signal SF2, and the transceiver 120 may further receive the second RF signal SF2. In some embodiments, the first RF signal SF1 and the second RF signal SF2 may both operate in a WLAN (Wireless Local Area Network) band, a Bluetooth band, or an NFC (Near Field Communication) band, but are not limited thereto.

Generally speaking, the second ultrasonic signal SU2 can record the relevant information of the eyeball 190, and the second ultrasonic signal SU2 can be converted into the second radio frequency signal SF2, so that the detection device 100 can obtain the aforementioned relevant information according to the second radio frequency signal SF2. Under the design of the present invention, the detection device 100 can perform a real-time and dynamic detection process for the user's eyeball 190, thereby minimizing the overall delay time.

The following embodiments will introduce various configurations and detailed structural features of the detection device 100. It should be understood that these drawings and descriptions are only for example and are not intended to limit the present invention.

In some embodiments, the detection device 100 further includes a processor 150. The processor 150 is coupled to the transceiver 120, wherein the processor 150 can estimate a current state of the eyeball 190 by analyzing the second radio frequency signal SF2. For example, the current state of the eyeball 190 may include a pupil diameter, but is not limited thereto. In some embodiments, the processor 150 can also determine the user's stress level according to the current state of the eyeball 190. It must be understood that the processor 150 is only an optional element and can be removed in other embodiments.

FIG2 shows a stereoscopic view of a contact lens element 130 and an eyeball 190 according to an embodiment of the present invention. In the embodiment of FIG2 , the contact lens element 130 is disposed adjacent to the eyeball 190. It should be noted that the term “adjacent” or “adjacent” in this specification may refer to a situation where the distance between two corresponding elements is less than a predetermined distance (e.g., 10 mm or shorter), and may also include a situation where the two corresponding elements are in direct contact with each other (i.e., the aforementioned distance is shortened to 0).

As described above, the resonator 140 of the contact lens element 130 can convert the first radio frequency signal SF1 into the first ultrasonic signal SU1. Then, the first ultrasonic signal SU1 can vertically enter the eyeball 190 and interact with the internal structure of the eyeball 190. In response to the first ultrasonic signal SU1, the eyeball 190 will generate a second ultrasonic signal SU2, which can be regarded as a reflected ultrasonic signal and can record relevant information of the eyeball 190. Then, the resonator 140 of the contact lens element 130 can further convert the second ultrasonic signal SU2 into a second radio frequency signal SF2 for subsequent analysis. In some embodiments, the propagation directions of the first ultrasonic signal SU1 and the second ultrasonic signal SU2 can be substantially perpendicular to the surface of the eyeball 190. That is, the first ultrasonic signal SU1 and the second ultrasonic signal SU2 are not related to the surface wave of the eyeball 190.

FIG. 3A shows a front view of an eyeball 190 according to an embodiment of the present invention. In the embodiment of FIG. 3A , the eyeball 190 corresponds to a relatively moderate pupil diameter D1. FIG. 3B shows a front view of an eyeball 190 according to an embodiment of the present invention. In the embodiment of FIG. 3B , the eyeball 190 corresponds to a relatively small pupil diameter D2. FIG. 3C shows a front view of an eyeball 190 according to an embodiment of the present invention. In the embodiment of FIG. 3C , the eyeball 190 corresponds to a relatively large pupil diameter D3. Therefore, by analyzing the second ultrasonic signal SU2, the detection device 100 will be able to know the current state of the eyeball 190, for example, the pupil diameter of the eyeball 190 may be close to any one of FIG. 3A , 3B , and 3C . In this way, by statistically analyzing the time series of pupil diameter changes, a feedback report of biological information can be obtained.

In some embodiments, the resonator 140 of the contact lens element 130 is implemented by a film bulk acoustic resonator (FBAR). However, the present invention is not limited thereto. In other embodiments, the resonator 140 of the contact lens element 130 may also be implemented by a high-overtone bulk acoustic resonator (HBAR). In addition, the resonator 140 of the contact lens element 130 may also include a thin film piezoelectric substrate having biocompatibility, such as ZnO (Zinc Oxide), AlN (Aluminum Nitride), etc. (not shown).

FIG. 4 shows a cross-sectional view of a resonator 440 according to an embodiment of the present invention. The resonator 440 can be applied to the aforementioned detection device 100. In the embodiment of FIG. 4 , the resonator 440 can be implemented by a multilayer dielectric substrate, and can include at least an antenna element 460 and a piezoelectric layer 470. In detail, the antenna element 460 includes a first radiation metal element 461 and a second radiation metal element 462, wherein the piezoelectric layer 470 is disposed between the first radiation metal element 461 and the second radiation metal element 462. For example, if the antenna element 460 is a dipole antenna, the first radiation metal element 461 can be a positive radiator of the dipole antenna, and the second radiation metal element 462 can be a negative radiator of the dipole antenna, but it is not limited thereto.

The antenna element 460 and the piezoelectric layer 470 may together form a sandwich structure 475, which may be suitable for mutual conversion between radio frequency signals and ultrasonic signals. In order to satisfy the resonance condition of the sandwich structure 475, the thickness H1 of the piezoelectric layer 470 may be approximately equal to 0.5 times the wavelength (λ/2) of the first ultrasonic signal SU1 or the second ultrasonic signal SU2. For example, the thickness H1 of the piezoelectric layer 470 may be between 1 μm and 3 μm, but is not limited thereto, and it will mainly be correlated with the piezoelectric material properties and the operating frequency. In some embodiments, the resonator 440 further includes a hydrogel layer 480, which may be disposed adjacent to the antenna element 460 and the piezoelectric layer 470. The hydrogel layer 480 may be regarded as a transparent portion of the contact lens element 130.

It should be understood that the shape and type of the antenna element 460 are not particularly limited in the present invention. In other embodiments, the antenna element 460 can also be changed to a monopole antenna, a loop antenna, a helical antenna, a patch antenna, a planar inverted F antenna, or a chip antenna.

FIG5 shows a flow chart of a detection method according to an embodiment of the present invention. First, in step S510, a first radio frequency signal is transmitted by a transceiver. In step S520, the first radio frequency signal is converted into a first ultrasonic signal by a resonator of a contact lens element, wherein the first ultrasonic signal is transmitted to one eyeball. In step S530, a second ultrasonic signal from the eyeball is converted into a second radio frequency signal by the resonator of the contact lens element. Finally, in step S540, the second radio frequency signal is received by the transceiver. It must be understood that the above steps do not need to be performed in sequence, and each feature of the embodiments of FIGS. 1-4 can be applied to the detection method of FIG5.

The present invention provides a novel detection device and detection method. Compared with the traditional design, the present invention has at least the advantages of being able to quickly obtain biological information, miniaturize the size of the entire device, and reduce the overall manufacturing cost, so it is very suitable for application in various devices.

It is worth noting that the above-mentioned component parameters are not limiting conditions of the present invention. Designers can adjust these setting values according to different needs. The detection device and detection method of the present invention are not limited to the states shown in Figures 1-5. The present invention may only include any one or more features of any one or more embodiments of Figures 1-5. In other words, not all the features shown in the figures need to be implemented in the detection device and detection method of the present invention at the same time.

The method of the present invention, or a specific form or part thereof, may exist in the form of a program. The program may be contained in a physical medium, such as a floppy disk, a CD, a hard disk, or any other machine-readable (such as computer-readable) storage medium, or a computer program product that is not limited to an external form, wherein when the program is loaded and executed by a machine, such as a computer, the machine becomes an apparatus for participating in the present invention. The program may also be transmitted through some transmission medium, such as wires or cables, optical fibers, or any transmission mode, wherein when the program is received, loaded and executed by a machine, such as a computer, the machine becomes an apparatus for participating in the present invention. When implemented on a general-purpose processing unit, the program combines with the processing unit to provide a unique device that operates similarly to application-specific logic circuits.

Ordinal numbers in this specification and the scope of patent application, such as "first", "second", "third", etc., have no sequential relationship with each other, and are only used to mark and distinguish two different components with the same name.

Although the present invention is disclosed as above in terms of preferred embodiments, it is not intended to limit the scope of the present invention. Any person skilled in the art may make some changes without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims (20)

1. A detection device for detecting an eye ball, comprising:

A frame member;

a transceiver disposed on the frame element and transmitting a first RF signal; and

A contact lens element comprising a resonator, wherein the resonator converts the first RF signal into a first ultrasonic signal, and the first ultrasonic signal is transmitted to the eyeball;

The resonator further converts a second ultrasonic signal from the eyeball into a second radio frequency signal, and the transceiver further receives the second radio frequency signal.

2. The detecting device of claim 1, further comprising:

and a processor coupled to the transceiver, wherein the processor estimates a current state of the eyeball by analyzing the second RF signal.

3. The detecting device for detecting the rotation of a motor rotor as claimed in claim 2, wherein the present condition of the eyeball includes a pupil diameter.

4. The detecting device for detecting the movement of a person's eyes as claimed in claim 1, wherein the frame member is an extended reality glasses frame.

5. The detecting device according to claim 1, wherein the first radio frequency signal and the second radio frequency signal both operate in a WLAN band, a Bluetooth band, or an NFC band.

6. The detecting device for detecting the rotation of a motor rotor as claimed in claim 1, wherein the resonator is implemented by a film bulk acoustic resonator.

7. The detecting device for detecting the rotation of a motor rotor as claimed in claim 1, wherein the resonator is implemented by a high-tuning bulk acoustic wave resonator.

8. The detecting device of claim 1, wherein the resonator comprises:

an antenna element including a first radiating metal portion and a second radiating metal portion; and

And the piezoelectric layer is arranged between the first radiation metal part and the second radiation metal part.

9. The detecting device of claim 8, wherein the resonator further comprises:

a hydrogel layer adjacent to the antenna element and the piezoelectric layer.

10. The detecting device for detecting the rotation of a motor rotor as claimed in claim 8, wherein the antenna element is a dipole antenna.

11. The detecting device for detecting the rotation of a motor rotor as claimed in claim 8, wherein the thickness of the piezoelectric layer is approximately equal to 0.5 times the wavelength of the first ultrasonic signal or the second ultrasonic signal.

12. The detecting device according to claim 8, wherein the thickness of the piezoelectric layer is between 1 μm and 3 μm.

13. The detecting device according to claim 1, wherein the first ultrasonic signal vertically enters the eyeball so that the eyeball generates the second ultrasonic signal.

14. A detection method comprises the following steps:

Transmitting a first radio frequency signal by a transceiver;

Converting the first RF signal into a first ultrasonic signal by a resonator of a contact lens element, wherein the first ultrasonic signal is transmitted to an eye ball;

converting a second ultrasonic signal from the eyeball into a second radio frequency signal by the resonator of the contact lens element; and

The second RF signal is received by the transceiver.

15. The detection method of claim 14, further comprising:

estimating a current state of the eyeball by analyzing the second radio frequency signal.

16. The method of claim 15, wherein the current state of the eyeball comprises a pupil diameter.

17. The detection method of claim 14, wherein the first radio frequency signal and the second radio frequency signal are both operating in a WLAN band, a Bluetooth band, or an NFC band.

18. The method of claim 14, wherein the resonator is implemented as a thin film bulk acoustic resonator.

19. The method of claim 14, wherein the resonator is implemented as a high-tuning bulk acoustic wave resonator.

20. The method of claim 14, wherein the first ultrasonic signal enters the eyeball vertically such that the eyeball generates the second ultrasonic signal.