Optical Adaptive Device for AR Visual Aberration Correction
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Solution Overview
Problem
Augmented reality (AR) devices face issues with visual aberrations and defocusing due to the innate curved structure of lens systems, which prevents simultaneous focusing of light from external objects and visual images, leading to increased size and weight, and distortion.
Innovation Solution
An optical adaptive device comprising a carrier with two light adjusting elements and a transparent panel, allowing for the simultaneous focusing of light from different sources onto a visual area without distortion, using spatial light modulators and tunable lenses to adjust light characteristics, and an eye tracking component to correct aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a curved lens system is used to focus light, then light from external objects can be focused, but visual aberrations and defocusing occur when superimposing computer generated images
Solution Approach 1:
The optical system is segmented into multiple planar light adjusting elements (first light adjusting element and second light adjusting element) instead of using a single curved lens. Each element independently adjusts light from different sources (external objects and computer generated images), allowing separate optimization of focusing for each light source without the visual aberrations caused by curved lenses.
Solution Approach 2:
The patent employs tunable lenses within the light adjusting elements that can dynamically adjust their focal length and optical properties. This dynamic adjustment capability allows the system to adaptively focus light from both external objects and computer generated images onto the same visual area, resolving the defocusing problem inherent in fixed curved lens systems.
2Measurement precision
If traditional AR optical systems are used, then light from external objects can be focused, but the device size and weight increase
Solution Approach 1:
The patent merges the functions of multiple optical elements into a compact integrated structure. The first and second light adjusting elements, along with the transparent panel, are combined in a way that allows simultaneous focusing of multiple light sources without requiring separate bulky optical paths, thereby reducing overall device weight while maintaining focusing capability.
Solution Approach 2:
The use of thin film technologies in the light adjusting elements and transparent panel enables the optical system to achieve sophisticated light control functions with minimal thickness and weight, replacing traditional thick curved lenses with lightweight planar structures that maintain optical performance.
3Measurement precision
If curved lenses are used to focus light, then focusing can be achieved, but distortion occurs in the visual images
Solution Approach 1:
Instead of using curved surfaces to achieve focusing (which inherently cause distortion), the patent inverts the approach by using planar light adjusting elements with tunable optical properties. This inversion of the traditional curved lens approach allows focusing to be achieved through dynamic optical adjustment rather than fixed geometric curvature, thereby eliminating image distortion.
4Adaptability or versatility
If multiple light sources are focused simultaneously, then both external objects and visual images can be seen clearly, but the optical system becomes more complex
Solution Approach 1:
The light adjusting elements are designed with multi-functionality, serving both to focus light from external objects and to focus light from computer generated images onto the same visual area. This universal design eliminates the need for separate optical paths for different light sources, achieving multi-source focusing capability while maintaining relatively simple optical system architecture.
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 precise focusing of light from both external objects and visual images without visual aberrations, reducing device size and weight, and correcting eye disorders without contact lenses, while improving data processing speed through reduced phase adjustment complexity.
Implementation Method 1
The first light adjusting element is configured to focus a first light from a first article on a visual area. The second light adjusting element is configured to focus a second light from a second article on the visual area.
Implementation Method 2
using spatial light modulators and tunable lenses to adjust light characteristics
Implementation Method 3
The first light adjusting element is configured to adjust a path of the first light. The second light adjusting element is configured to adjust a path of a second light.
Implementation Method 4
an eye tracking component to correct aberrations
Data Source
AI summary
The present disclosure provides an optical adaptive device and a wearable device. The optical adaptive device includes a carrier, a first light adjusting element, and a second light adjusting element. The first light adjusting element is in or on the carrier and configured to focus a first light from a first article on a visual area. The second light adjusting element is in or on the carrier and configured to focus a second light from a second article on the visual area. The second article is further away from the area than the first article.