Continuous Fiber Injection Molded AR Glasses Frame
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Solution Overview
Problem
AR and VR glasses are expensive due to their complexity and materials, with woven fabric composites providing strength but being costly and dense, while plastic injection molding results in low mechanical performance and heat dissipation issues.
Innovation Solution
Fiber reinforced structures with a continuous fiber component over-molded with thermoplastic material, providing structural rigidity and heat dissipation, and reducing manufacturing time and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If woven fabric composite is used for frames and sidearms, then structural strength and impact resistance are improved, but manufacturing cost and manufacturing time increase
Solution Approach 1:
The patent combines continuous fiber reinforcement (providing strength) with thermoplastic matrix material (enabling injection molding) to create a composite structure that achieves both high strength and manufacturing efficiency. The continuous fibers are embedded within the injection-molded thermoplastic material, creating a hybrid composite that leverages the advantages of both material systems.
Solution Approach 2:
The patent changes the manufacturing process parameters by transitioning from hand-based layup techniques to injection molding. This involves changing the state of the matrix material from liquid resin (in composite manufacturing) to molten thermoplastic (in injection molding), enabling automated high-speed manufacturing while maintaining structural integrity through the continuous fiber reinforcement.
2Strength
If woven fabric composite is used for frames and sidearms, then structural strength is improved, but manufacturing time increases
Solution Approach 1:
The patent combines continuous fiber reinforcement (providing strength) with thermoplastic matrix material (enabling injection molding) to create a composite structure that achieves both high strength and manufacturing efficiency. The continuous fibers are embedded within the injection-molded thermoplastic material, creating a hybrid composite that leverages the advantages of both material systems.
Solution Approach 2:
The patent changes the manufacturing process parameters by transitioning from hand-based layup techniques to injection molding. This involves changing the state of the matrix material from liquid resin (in composite manufacturing) to molten thermoplastic (in injection molding), enabling automated high-speed manufacturing while maintaining structural integrity through the continuous fiber reinforcement.
3Ease of manufacture
If plastic injection molding is used for frames and sidearms, then manufacturing cost and manufacturing time are reduced, but mechanical strength and heat dissipation performance deteriorate
Solution Approach 1:
The patent combines continuous fiber reinforcement (providing strength) with thermoplastic matrix material (enabling injection molding) to create a composite structure that achieves both high strength and manufacturing efficiency. The continuous fibers are embedded within the injection-molded thermoplastic material, creating a hybrid composite that leverages the advantages of both material systems.
4Productivity
If plastic injection molding is used for frames and sidearms, then manufacturing efficiency is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The patent combines continuous fiber reinforcement (providing strength) with thermoplastic matrix material (enabling injection molding) to create a composite structure that achieves both high strength and manufacturing efficiency. The continuous fibers are embedded within the injection-molded thermoplastic material, creating a hybrid composite that leverages the advantages of both material systems.
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 fiber reinforced structures are lighter, more cost-effective, and offer better structural rigidity and heat dissipation compared to conventional composite and plastic-only structures, enhancing user comfort and durability.
Implementation Method 1
the continuous fiber component can provide heat dissipation, such that heat is dissipated throughout the component (rather than localized as occurs with plastics)
Implementation Method 2
The thermoplastic material is then injected into the mold to surround the continuous fiber component. The thermoplastic material then cools and hardens in the mold to form the structure
Data Source
AI summary
A set of augmented reality (AR) or virtual reality (VR) glasses are disclosed. The glasses comprise a fiber reinforced structure. The fiber reinforced structure includes a continuous fiber component. The fiber reinforced structure also includes a thermoplastic material injection molded over the continuous fiber component, wherein the thermoplastic material surrounds the continuous fiber component. The glasses also comprise electronics that are coupled to the fiber reinforced structure, wherein the electronics are configured to facilitate presentment of imagery onto a lens of the glasses.