Transparent Lens Antenna Layout to Reduce Frame Interference
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Solution Overview
Problem
Wearable devices, such as augmented reality eyeglasses, experience electrical interference from components mounted in the frame, leading to signal absorption by the user's body and performance degradation of the antenna system.
Innovation Solution
Incorporating a conductive pattern on a transparent member, such as a transparent substrate with a first conductive pattern on one side and a second conductive pattern on the opposite side, electrically disconnected from the first, to reduce electrical interference and position antennas within the display rather than the frame, thereby minimizing body contact and impedance changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components are mounted in the frame, then device functionality is achieved, but electrical interference occurs and antenna performance degrades
Solution Approach 1:
The patent divides the wearable device into separate functional zones: the frame contains non-conductive components while the transparent member (lens) houses the antenna radiator. This spatial segmentation isolates the antenna from electrical interference sources in the frame, resolving the contradiction between device functionality and antenna performance.
Solution Approach 2:
The transparent member serves as an intermediary structure that hosts the antenna radiator away from the frame's electronic components. By positioning the antenna within the transparent member rather than the frame, the patent creates physical and electrical separation, reducing interference while maintaining device functionality.
2Area of stationary object
If antenna is positioned in the frame, then mounting space is available, but signal absorption by user's body increases
Solution Approach 1:
The patent transitions the antenna location from the two-dimensional frame plane to the three-dimensional space within the transparent member. This dimensional relocation positions the antenna farther from the user's body, reducing signal absorption while preserving mounting space through efficient use of the transparent member's internal volume.
3Illumination intensity
If transparent member is used, then aesthetic appearance is improved, but electrical interference from frame components affects antenna performance
Solution Approach 1:
The patent extracts the antenna radiator from the frame structure and relocates it to the transparent member. This extraction removes the antenna from the source of electrical interference while preserving the transparent member's aesthetic function, simultaneously achieving both transparency and reliable antenna performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces electrical interference, minimizes signal absorption by the user's body, and enhances antenna performance by providing more mounting space for antennas within the display, improving the overall functionality and reliability of wearable devices.
Implementation Method 1
a first conductive pattern disposed on a side of the transparent substrate facing the first side of the transparent member, a second conductive pattern disposed on another side of the transparent substrate facing the second side of the transparent member
Implementation Method 2
while the wearable device is worn by a user, transmitting external light passing through a first side and a second side opposite to the first side to the user
Data Source
AI summary
A wearable device is provided. The wearable device includes a transparent member for transferring, to a user, external light passing through a first surface and a second surface that is opposite to the first surface, a transparent substrate, within the transparent member, arranged between the first surface and the second surface, a first conductive pattern arranged on one surface of the transparent substrate facing the first surface, and a second conductive pattern arranged on another surface of the transparent substrate facing the second surface, and electrically disconnected from the first conductive pattern. The first conductive pattern includes first wires which extend in a first direction and are parallel to each other, and second wires which extend in a second direction that is different from the first direction, and are parallel to each other, and is covered by the second conductive pattern when the transparent substrate is viewed.