Movable Near-Eye Display with Pivotally Coupled Arms
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Solution Overview
Problem
Smart eyewear with fixed display optics can obstruct a user's view when not in use, impacting the device's usability by continuously being present in the field of view.
Innovation Solution
A near-eye display system with movable display optics that can be pivoted between a viewing position and a retracted position, using a mechanism of pivotally coupled arms and a deployment control mechanism to allow the display optic to be moved out of the user's field of view when not in use, enabling less or no vision occlusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If display optics are held in a fixed location in front of the user's eye, then the display functionality is maintained, but the user's view is obstructed when the display is not in use
Solution Approach 1:
The display optics are made movable rather than fixed, allowing them to be dynamically positioned between a viewing position and a retracted position. The arms are pivotally coupled to enable movement, and a biasing element provides automatic retraction when not in use, resolving the contradiction between maintaining display functionality and avoiding vision obstruction.
Solution Approach 2:
The display optics are extracted from the fixed field of view and moved to a retracted position when not in use. This separates the display function from the continuous visual path, allowing the user to have an unobstructed view when the display is not needed while maintaining access when required.
2Object-affected harmful factors
If display optics are moved to a retracted position when not in use, then vision occlusion is reduced, but the device structure becomes more complex
Solution Approach 1:
The use of pivotally coupled arms with a biasing element creates a dynamic structure that automatically transitions between states. This mechanical system provides movement functionality with relatively simple components compared to motorized or electronically controlled systems, balancing the need for retraction with structural complexity.
Solution Approach 2:
The biasing element enables the display optics to automatically retract to the non-obstructing position without requiring active control or power input. The system self-regulates its position based on whether the display is in use, reducing the need for complex control mechanisms while achieving the vision protection goal.
Data Source
AI summary
One example provides a near-eye display system comprising a frame configured to be supported by a head of a user, and a movable near-eye display comprising a display optic support coupled with the frame via a first arm and a second arm. Each of the first arm and the second arm is pivotally coupled to the frame and to the display optic support such that the display optic support is movable with respect to the frame. The system further includes a display optic coupled to the display optic support.