AR Spectacle Lens Diffractive Element Stray Light Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing augmented reality devices lack a spectacle function, requiring users with vision correction to wear additional glasses and are susceptible to external stray light, especially outdoors.
Innovation Solution
An optical device combining a spectacle lens with a diffractive optical element, which allows ambient light to enter the eye while projecting augmented reality images, incorporating a light-shielding element to mitigate stray light effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing augmented reality devices are used, then augmented reality function is provided, but spectacle function is not provided requiring additional correction glasses
Solution Approach 1:
The patent combines the spectacle lens and diffractive optical element into a single integrated optical device. The diffractive optical element is disposed on or within the spectacle lens, merging two previously separate functions (vision correction and augmented reality display) into one unified device, eliminating the need for users to wear additional correction glasses
Solution Approach 2:
The optical device is designed to perform multiple functions simultaneously: it provides both spectacle function (vision correction) and augmented reality function (displaying virtual information). The spectacle lens corrects vision while the diffractive optical element displays augmented reality images, making the device universal and adaptable to multiple uses
2Object-affected harmful factors
If existing augmented reality devices are used outdoors, then augmented reality function is provided, but the device is easily affected by external stray light
Solution Approach 1:
The patent applies local quality by incorporating a light-shielding element at specific locations within the optical device. The light-shielding element is disposed between the spectacle lens and the diffractive optical element, strategically positioned to block stray light from reaching the diffractive optical element while not interfering with the normal optical path, thus locally addressing the stray light problem
3Ease of operation
If users with vision correction needs wear correction spectacles additionally, then vision correction is achieved, but device complexity and user burden increase
Solution Approach 1:
The patent merges the spectacle lens and diffractive optical element into a single integrated device, eliminating the need for users to wear separate correction glasses. This consolidation improves ease of operation by reducing the number of devices users must manage while maintaining both vision correction and augmented reality functionalities
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
Provides users with spectacles that offer both corrected vision and augmented reality functionality without additional correction glasses, while reducing the impact of external light, enhancing usability and visual experience.
Implementation Method 1
The diffractive optical element has a third surface facing the eye and a fourth surface facing away from the eye, and the diffractive optical element is a diffractive optical film or a diffractive optical plate
Implementation Method 2
The spectacle lens has a first surface facing the eye and a second surface facing away from the eye
Data Source
AI summary
An optical device combining a spectacle function with an augmented reality function adapted to let an ambient light beam enter an eye of a user is provided. The optical device includes a spectacle lens and a diffractive optical element. The spectacle lens has a first surface facing the eye and a second surface facing away from the eye. The diffractive optical element is disposed on the first surface of the spectacle lens or between the first surface and the second surface of the spectacle lens. The diffractive optical element has a third surface facing the eye and a fourth surface facing away from the eye. The diffractive optical element is a diffractive optical film or a diffractive optical plate. An augmented reality device is also provided.