Wearable AR Display for Simulator Depth Perception
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Solution Overview
Problem
Current simulator technologies fail to provide true stereoscopic depth perception and have a large physical footprint, limiting situational awareness for pilots in training environments, especially when configured for two users.
Innovation Solution
A display system comprising a main display and a wearable see-through display, with a control unit that generates and filters images to provide augmented reality, using cameras to capture the user's line of view and synchronize image display to create a stereoscopic experience, reducing the physical footprint and enhancing depth perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If wide field of view displays are used to provide immersive visual environment, then situational awareness is improved, but true stereoscopic depth perception cannot be provided and physical footprint increases
Solution Approach 1:
The display system is segmented into a main display for wide field of view coverage and a wearable display for stereoscopic depth perception. The main display handles the peripheral and central visual field while the wearable display provides binocular 3D images, dividing the functions to resolve the contradiction between immersive coverage and depth perception capability.
Solution Approach 2:
The system merges the main display and wearable display into a coordinated dual-display configuration. The wearable display is positioned to align with the user's eyes and receives stereoscopic images synchronized with the main display, combining the advantages of wide field of view and true 3D perception while maintaining a compact physical footprint.
2Loss of information
If wide field of view displays are used to provide immersive visual environment, then situational awareness is improved, but stereoscopic depth perception is lost
Solution Approach 1:
The display system is segmented into a main display for wide field of view coverage and a wearable display for stereoscopic depth perception. The main display handles the peripheral and central visual field while the wearable display provides binocular 3D images, dividing the functions to resolve the contradiction between immersive coverage and depth perception capability.
Solution Approach 2:
Different parts of the visual field are provided with different qualities: the main display provides wide field of view coverage for situational awareness, while the wearable display provides high-quality stereoscopic images specifically at the user's line of sight, ensuring true depth perception where it is most needed.
3Measurement precision
If sequential display of first and second set of images is used, then stereoscopic effect is achieved, but image crosstalk may occur without proper filtering
Solution Approach 1:
The system uses periodic action by sequentially displaying the first and second sets of images in alternating frames synchronized with the liquid crystal shutter. The shutter opens and closes in periodic cycles to allow each eye to see only its designated image, achieving the stereoscopic effect while preventing image crosstalk through time-division multiplexing.
Solution Approach 2:
The system employs feedback through synchronization between the control unit, display device, and liquid crystal shutter. The control unit coordinates the sequential display of stereoscopic image pairs with the shutter's opening and closing cycles, ensuring that each eye receives the correct image at the correct time, thereby eliminating crosstalk while maintaining the stereoscopic effect.
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 system effectively provides enhanced situational awareness by offering stereoscopic augmented reality to users, improving depth perception and reducing the physical space required for simulators, allowing for more immersive and effective training for pilots.
Implementation Method 1
The passive filter comprises a polarization glass device for allowing the user to see images having a given polarization, the images of the first set having the given polarization and the images of the second set having a polarization different from the given polarization
Implementation Method 2
the shutter device comprises a liquid crystal shutter
Data Source
AI summary
A display system for a simulator comprising: a first display for displaying a simulated scene, the first display being positionable away from a user; a second display for displaying a portion of the simulated scene, the second display being wearable by the user; at least one camera for capturing video images along a line of view of the user; a filter for filtering a portion of a field of view of the user; and a control unit configured for: receiving environment images, the environment images comprising a first set of images of the simulated scene, a second set of images of the simulated scene and at least a third set of images of a portion of the simulated scene; displaying the first and second set of images on the first display; generating augmented reality images based on the video images and the at least a third set of images; and displaying the augmented reality images on the second display.