Eye Tracking Spectacles Frame With Snap-Fit Flexible Assembly
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Solution Overview
Problem
Existing eye tracking spectacles are hindered by camera placement that affects user behavior, are bulky and inflexible, and require complex manufacturing processes, limiting their use and comfort.
Innovation Solution
The spectacles feature a frame with a U-shaped portion containing cameras and a mechanical fastening profile created via additive manufacturing, allowing flexibility and stability across different head sizes, and a snap-fit assembly for easy customization and reduced manufacturing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the frame is made stiff by injection molding and gluing multiple parts, then the structural strength is improved, but the adaptability to different head sizes and shapes deteriorates
Solution Approach 1:
The frame is divided into multiple parts (first part and second part) that can be separately manufactured and then assembled. This segmentation allows each part to be optimized for strength while the assembly mechanism provides adaptability through adjustable positioning features
Solution Approach 2:
The frame incorporates dynamic adjustment capabilities through movable components and adjustable positioning features that allow the frame to adapt to different head sizes and shapes. The assembly mechanism enables dynamic reconfiguration rather than being fixed in a single rigid state
2Manufacturing precision
If multiple parts are injection molded and glued together, then the manufacturing precision is improved, but the device complexity and production time increase
Solution Approach 1:
The frame is segmented into multiple parts that can be manufactured using standardized injection molding processes, maintaining manufacturing precision while reducing overall complexity through modular design. Each part can be produced independently with consistent quality
Solution Approach 2:
The gluing process is replaced with a mechanical fastening system using clips, snaps, or interlocking features that eliminate the need for adhesives. This substitution reduces production time and simplifies the manufacturing process while maintaining assembly precision
3Reliability
If the frame is made stiff, then the reliability is improved, but the comfort and adaptability to different head sizes deteriorates
Solution Approach 1:
The frame is divided into rigid structural components for reliability and flexible adjustment components for comfort. This segmentation allows the rigid parts to provide structural integrity while the adjustable parts ensure comfort and adaptability to different users
Solution Approach 2:
The frame incorporates flexible elements such as elastic temple arms or adjustable nose pads that can deform to accommodate different head shapes while maintaining overall structural reliability. These flexible components allow the rigid frame to adapt to various users without compromising strength
Data Source
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AI summary
The present invention concerns an additively manufactured eye tracking spectacles having a frame including at least eye cameras and field of view camera and electronical components, said frame comprising two main parts (21, 11) fastened together via a mechanical fastening snap-fit profile, achieving a certain frame flexibility and creating a hollow space for receiving the cameras and electronics.