Flexible Display Frame for Headset Interpupillary Adjustment
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Solution Overview
Problem
Traditional virtual reality headsets face challenges in providing optimal immersion due to poorly calibrated headset adjustments, which can cause eye strain, blurred vision, and discomfort, often requiring complex and costly mechanisms that increase manufacturing costs and mechanical failure points.
Innovation Solution
The use of a flexible planar support frame within adjustable head-mounted displays that bends to adjust display areas for varying interpupillary distances, coupled with a deflection sensor and compensation module to normalize images and prevent distortion, allowing for a more comfortable and versatile fit without increasing the number of mechanical parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional adjustment mechanisms are used to calibrate headset spacing, then interpupillary distance adjustment is achieved, but device complexity increases due to many moving parts
Solution Approach 1:
The patent replaces traditional mechanical adjustment mechanisms (moving parts, hinges, links) with a flexible display assembly that bends to adjust display area spacing. The flexible support frame with embedded display screens bends inward or outward to accommodate different interpupillary distances, eliminating complex mechanical adjustment systems while maintaining calibration adaptability.
Solution Approach 2:
The patent employs a flexible support frame structure that allows the display assembly to bend. This flexible construction enables the display areas to move relative to each other without requiring traditional mechanical joints or moving parts, directly reducing device complexity while achieving the required adaptability for different user configurations.
2Adaptability or versatility
If traditional adjustment mechanisms are used to widen the assembly for calibration, then interpupillary distance adjustment is achieved, but the headset form factor increases
Solution Approach 1:
The patent implements a dynamic flexible display assembly that can change its configuration from a bent state (for wide interpupillary distances) to a straight state (for narrow interpupillary distances). This dynamic flexibility allows the headset to adapt to different user measurements without requiring a larger overall form factor, as the adjustment is achieved through bending rather than lateral expansion.
3Adaptability or versatility
If display areas are bent to adjust for interpupillary distance, then calibration adaptability improves, but image distortion occurs
Solution Approach 1:
The patent applies image normalization processing in advance to compensate for the distortion that will occur when the flexible display bends. By pre-calculating and applying correction algorithms based on the expected bending geometry, the system ensures that images appear undistorted to the user even though the physical display areas are angled relative to each other.
Solution Approach 2:
The patent incorporates sensors to detect the actual bending state of the flexible display assembly and uses this feedback information to dynamically adjust image normalization parameters. This closed-loop approach ensures that image distortion is compensated in real-time based on the actual configuration of the display, maintaining manufacturing precision despite physical deformation.
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 solution enables headsets to accommodate a wider range of interpupillary distances, reduces manufacturing costs, and provides a more comfortable fit by minimizing mechanical failure points and maintaining image quality without distortion, thereby enhancing the immersive experience.
Implementation Method 1
a flexible planar support frame within which display areas are embedded
Implementation Method 2
The deflection sensor may include a strain gauge
Data Source
AI summary
An apparatus for head-mounted displays may include (i) a flexible planar support frame, (ii) a left eye cup coupled to a left side of the flexible planar support frame and a right eye cup coupled to a right side of the flexible planar support frame, (iii) left-eye and right-eye display screen areas mounted to the flexible planar support frame such that the left-eye display screen area projects toward a left eye aperture defined by the left eye cup and the right-eye display screen area projects toward a right eye aperture defined by the right eye cup, and (iv) a deflection sensor coupled to the flexible planar support frame that generates a deflection signal describing an extent to which the support frame is bent, where images displayed by the left-eye and right-eye display screen areas are normalized based on the deflection signal. Various other devices, systems, and methods are also disclosed.