Head Mounted Display Lens Optical Assembly
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Solution Overview
Problem
Existing head-mounted displays obstruct facial features, limiting natural human interaction and accommodating only a narrow range of interpupillary distances, making them impractical for widespread use.
Innovation Solution
A head-mounted display design that fits around the head, securely holds a mobile device, and projects 3D or 2D images onto an eyepiece, allowing the face to be visible and accommodating a wide range of interpupillary distances through a flexible optical assembly and remote control functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the head mounted display is positioned to cover the eyes for proper viewing, then the viewing experience is improved, but the facial features become obstructed and natural human interaction is limited
Solution Approach 1:
The display system is segmented into separate left and right optical paths with individual displays and optical elements for each eye. This allows independent optimization of each viewing path while maintaining facial visibility through the transparent eyepiece design that doesn't require complete eye coverage.
Solution Approach 2:
The patent utilizes transparent or translucent eyepiece materials that allow light transmission, enabling facial features to remain visible while still providing the 3D display function. The transparency property resolves the contradiction between eye coverage and facial visibility.
2Device complexity
If the head mounted display is designed with a fixed optical configuration, then the device structure is simplified, but it can only accommodate a narrow range of interpupillary distances
Solution Approach 1:
The optical assembly incorporates adjustable components that allow the optical path length and eyepiece position to be dynamically modified. This enables the device to adapt to different interpupillary distances while maintaining proper optical alignment and image quality.
Solution Approach 2:
The optical assembly is designed with universal adjustment capabilities that accommodate a wide range of interpupillary distances. The same optical components serve multiple functions including image projection, focus adjustment, and interpupillary distance adaptation.
3Stability of the object's composition
If the mobile device is securely mounted in the head mounted display, then the viewing stability is improved, but the device complexity increases
Solution Approach 1:
The mobile device is merged with the head mounted display structure through integrated mounting mechanisms. The device holder and optical assembly are combined into a unified structure that provides stable viewing while avoiding separate complex mounting 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
Enables natural facial interaction and accommodates various interpupillary distances, providing an immersive and versatile viewing experience for 3D and 2D content using a mobile device.
Implementation Method 1
a lens, and an eyepiece onto which the reflecting surface reflects the images through the lens
Implementation Method 2
a reflecting surface, connected to the housing that reflects images displayed by the mobile device
Data Source
AI summary
A head mounted display device that displays three dimensional images from a mobile device, which includes a viewing assembly, a housing, a mobile device holder, connected to the housing, a reflecting surface, connected to the housing that reflects images displayed by the mobile device, a lens, and an eyepiece onto which the reflecting surface reflects the images through the lens.