AR Display Parameter Adjustment for Optical Power Compensation
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Solution Overview
Problem
Conventional augmented reality devices struggle to accurately superimpose virtual images onto real-world environments for users with optical corrections, as optical elements modify the properties of real and virtual images differently, leading to perception issues.
Innovation Solution
A method to determine and compensate for the impact of optical elements on virtual images by adjusting display parameters such as distance, size, and position, using a system that includes optical elements with non-zero power and a router with adjustable intrinsic parameters to ensure simultaneous sharpness and accurate superposition of virtual and real images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical elements with non-zero power are added to protect the display device or provide additional optical functions, then protection and additional functions are improved, but the properties of real objects and virtual images are modified differently, deteriorating the perception of superposition
Solution Approach 1:
The patent modifies display parameters (display distance, size, position) based on the optical characteristics of the added optical elements. By calculating and adjusting these parameters, the system compensates for the differential modification of real and virtual image properties, restoring accurate superposition perception while maintaining the protective optical elements.
Solution Approach 2:
The patent introduces an optical element with opposite power as an intermediary component. This intermediary element counteracts the optical modifications introduced by the protective optical elements, enabling both protection and accurate image superposition to coexist.
2Adaptability or versatility
If optical elements with non-zero power are used to provide additional optical functions, then functional versatility is improved, but the perception accuracy of virtual and real image superposition deteriorates
Solution Approach 1:
The system adjusts display parameters according to the specific optical characteristics (power, position) of the additional optical elements. This allows the device to maintain measurement precision and perception accuracy while incorporating various optical functions through different optical element configurations.
Solution Approach 2:
The patent implements dynamic adjustment of display parameters based on the optical characteristics of the elements in use. This enables the system to adapt to different optical configurations and maintain accurate superposition perception across various functional states.
3Manufacturing precision
If display parameters are adjusted to compensate for optical element impact, then perception accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements automatic calculation and adjustment of display parameters based on the optical characteristics of the optical elements. The system self-configures by detecting the optical element properties and computing the necessary parameter modifications, eliminating the need for manual intervention and reducing operational complexity.
Solution Approach 2:
The system uses the optical characteristics of the optical elements as feedback to automatically adjust display parameters. This closed-loop approach ensures perception accuracy is maintained while the adjustment process is automated, reducing the complexity burden on the user.
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 allows for improved perception of both real and virtual images by accounting for optical modifications, ensuring clear and accurate superposition, even with optical corrections, enhancing the overall augmented reality experience.
Implementation Method 1
an optical element, such as an ophthalmic lens, is placed so that the light beams from a real object located in the user's field of vision pass through it at least once, the informative image possibly also passing through the optical element
Data Source
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AI summary
The invention relates to a method of providing a display device for an informational electronic device intended to display a virtual image to a user, the informational electronic device comprising an optical element having a non-zero optical power and intended to be arranged in front of a user's eye, the display device comprising a light source and a conveyor intended to convey optical beams emitted by the light source to the user's eye to enable the visualization of the virtual image, the method comprising at least the following steps: - a step of providing a value of a parameter of the virtual image; and - a step of determining an optimal value of a display parameter of the display device from at least an optical power at a point of the optical element and the value of the parameter of the virtual image.