Embedded Eye Tracking Glasses Assembly With Unitary Lens Components
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Solution Overview
Problem
Existing eye tracking glasses are cumbersome, heavy, and require complex assembly due to the need for multiple mechanical components and flexible printed circuits, which complicates manufacturing and increases weight and size, making them unsuitable for portable applications.
Innovation Solution
The design incorporates a unitary component with embedded cameras, illuminators, and electrical conductors within moulded lenses, using UV-curable materials to integrate these components seamlessly, reducing the need for external mechanical parts and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple mechanical components and flexible printed circuits are used to assemble eye tracking glasses, then the functional requirements (camera mounting, electrical connections) are met, but the device becomes cumbersome, heavy, and complex to manufacture
Solution Approach 1:
The patent combines multiple separate components (lens, camera mounting structure, electrical conductor support, and frame) into a single unitary lens component. The lens is molded as one piece with integrated carrier regions that directly hold the cameras and electrical conductors, eliminating the need for separate mechanical assemblies and flexible printed circuits.
Solution Approach 2:
The unitary lens component serves multiple functions simultaneously: it acts as the optical lens, provides structural support for mounting cameras, carries electrical conductors for power and data transmission, and forms part of the glasses frame. This multi-functionality reduces the overall component count and simplifies manufacturing.
2Weight of moving object
If traditional separate component assembly is used, then functional requirements are met, but the glasses become heavy and cumbersome
Solution Approach 1:
By merging the lens, mounting structures, and electrical conductor supports into a single unitary component, the patent eliminates the weight of multiple separate parts and their connecting mechanisms. The integrated design reduces overall material usage while maintaining structural integrity.
Solution Approach 2:
The unitary lens component is designed with segmented functional regions: a central lens region for optics and peripheral carrier regions for mounting components. This segmentation allows different functions to be integrated into one piece without requiring multiple separate parts, reducing weight while maintaining manufacturability.
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
The solution results in a lightweight, robust, and easier-to-assemble eye tracking glasses that maintain a compact form factor, suitable for augmented reality applications, while minimizing visual obstruction and enabling advanced functionalities like gaze direction estimation and augmented reality features.
Implementation Method 1
using UV-curable materials to integrate these components seamlessly
Data Source
AI summary
A pair of eye tracking glasses comprising unitary components, which each include: a lens region, through which an eye of a user can look when they are wearing the glasses; and a carrier region, which is at the periphery of the first lens region. Unitary components comprise the following embedded therein: a camera; a plurality of illuminators; and electrical conductors. The glasses further comprise: a first arm that is mechanically connected to the first carrier region of the first unitary component; a second arm that is mechanically connected to the second carrier region of the second unitary component; and a control module. The control module is configured to: receive signalling from the camera of each of the unitary components via the embedded electrical conductors; and provide signalling to the plurality of illuminators of each of the unitary components via the embedded electrical conductors.