Head Mountable Display Light Emitting Elements Luning Reduction
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Solution Overview
Problem
Head-mountable displays (HMDs) face limitations in increasing the field of view (FOV) due to retinal rivalry and 'luning' effects when display elements are 'toed-out', which restricts the extent to which binocular overlap can be reduced without adversely affecting the user experience.
Innovation Solution
Incorporating light emitting elements adjacent to the periphery of each display element, controlled by a controller to emit light dependent on the image content, which extends the images into the central nasal region, reducing 'luning' and allowing for increased FOV without compromising user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If display elements are toed-out to increase field of view, then FOV is improved, but luning effect occurs degrading image quality
Solution Approach 1:
The patent applies the 'Blessing in disguise' principle by using the light emitting elements to convert the harmful luning effect into a beneficial outcome. The light emitting elements emit light into the central nasal region to actively counteract the darkness caused by luning, thereby transforming the harmful visual artifact into an opportunity for correction and improvement of image quality while maintaining the increased FOV configuration
2Area of stationary object
If display elements are toed-out to reduce binocular overlap, then FOV is improved, but retinal rivalry occurs degrading user experience
Solution Approach 1:
The patent applies the 'Blessing in disguise' principle by using the light emitting elements to convert the harmful retinal rivalry effect into a beneficial outcome. The light emitting elements provide additional illumination in the central nasal region that helps reconcile the conflicting images from the toed-out display elements, thereby reducing retinal rivalry and improving the overall user experience while maintaining the increased FOV configuration
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 mitigates 'luning' and enables greater toeing-out of display elements, enhancing the field of view and user immersion without negatively impacting the quality of the HMD experience.
Implementation Method 1
at least one light emitting element positioned adjacent a right-hand periphery of the left-hand display element; at least one light emitting element positioned adjacent a left-hand periphery of the right-hand display element; a controller operable to control light emitted by the light emitting elements dependent upon the video signals
Data Source
AI summary
A head-mountable display comprises a frame configured to be mounted on a user's head. The frame defines left and right-hand eye display positions that are positioned in front of the respective eyes of the user. A left-hand display element is mounted with respect to the left-hand eye display position, and is operable to provide an image from a left-hand video signal to the user's left eye. A right-hand display element mounted with respect to the right-hand eye display position, and is operable to provide an image from a right-hand video signal to the user's right eye. At least one light emitting element is positioned on a right-hand periphery of the left-hand display element and at least one light emitting element is positioned on a left-hand periphery of the right-hand display element. A controller controls light emitted by the light emitting elements dependent upon the video signals to reduce luning.