Flush LED Recesses in VR Head-Mounted Displays
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Solution Overview
Problem
Virtual-reality head-mounted displays lack a seamless integration of light-emitting diodes (LEDs) that are both functional for motion tracking and aesthetically flush with the surface, posing challenges in design and functionality.
Innovation Solution
The method involves forming recesses in the outer surfaces of the head-mounted display, installing LEDs within these recesses, and covering them with flush-fitting covers made of materials like urethane or mylar panels to maintain a smooth surface appearance while allowing light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LEDs are installed on the outer surface of the head-mounted display, then motion tracking functionality is achieved, but the surface appearance becomes non-seamless and visually disruptive
Solution Approach 1:
The LED is nested within a recess formed in the outer surface of the head-mounted display. The recess has a depth that allows the LED to be positioned below the surface level, and a cover is placed over the recess to create a flush surface. This nesting approach embeds the functional LED component within the structural housing, maintaining external surface integrity while preserving internal functionality.
Solution Approach 2:
A cover is introduced as an intermediary element between the LED and the outer surface. The cover is positioned over the recess containing the LED, creating a transition that maintains the flush surface appearance while allowing light emission from the LED below. The cover acts as a mediator that reconciles the conflicting requirements of surface smoothness and light transmission.
2Shape
If LEDs are recessed into the head-mounted display surface, then a flush surface appearance is achieved, but light emission capability may be compromised
Solution Approach 1:
The cover is made from a flexible or translucent material that allows light to pass through while maintaining the flush surface appearance. The thin film or shell structure of the cover permits light emission from the recessed LED to transmit through to the external environment, preserving both aesthetic appearance and functional light output.
3Shape
If flush covers are added over recessed LEDs, then surface smoothness is improved, but device complexity increases
Solution Approach 1:
The recess and cover are integrated as part of the overall housing structure of the head-mounted display. Rather than being separate additive components, the recess is formed during housing manufacturing and the cover is incorporated into the same assembly process, merging multiple functions into a unified structural solution that reduces overall device complexity.
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 approach enables efficient motion tracking through infrared LEDs while providing a visually and tactually seamless integration of LEDs into the head-mounted display, enhancing the user experience with a clean and functional design.
Implementation Method 1
installing light-emitting diodes (LEDs) in the recesses
Implementation Method 2
efficient motion tracking through infrared LEDs
Data Source
AI summary
A head-mounted display for a virtual-reality system includes one or more outer surfaces having a plurality of recesses. Light-emitting diodes (LEDs) are installed in respective recesses of the plurality of recesses. The recesses are covered with covers that are substantially flush with respective surfaces of the one or more outer surfaces of the head-mounted display.