AR Lens Anti-Reflective Module for Clear Virtual Images
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current augmented reality providing devices face challenges in providing a clear image due to the overlay of virtual and mirror images, which limits the user's field of view and image clarity.
Innovation Solution
The device incorporates a lens with reflective mirrors and an anti-reflective module comprising linear polarization films and retardation films to prevent mirror images from overlapping with the virtual images, ensuring a clear and expanded field of view by strategically positioning these components between the display module and the lens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a lens with reflective mirrors is used to expand the field of view, then the area of the display device seen by the user is enlarged, but mirror images overlap with virtual images causing image clarity to deteriorate
Solution Approach 1:
The patent introduces a linear polarization film as an intermediary component between the display module and the lens. This film selectively transmits light based on polarization direction, allowing virtual images to pass through while blocking mirror images that have different polarization characteristics, thereby resolving the overlap issue without compromising field of view expansion
Solution Approach 2:
The patent utilizes polarization state changes (analogous to color changes in optical properties) to differentiate between virtual images and mirror images. By applying the linear polarization film, the system exploits the different polarization states of light from different image sources to achieve selective transmission and blocking
2Area of stationary object
If multiple display parts are positioned on different side surfaces of the lens, then the field of view is expanded, but mirror images from different surfaces overlap causing image quality to deteriorate
Solution Approach 1:
The patent applies different polarization orientations to different regions of the linear polarization film corresponding to different side surfaces of the lens. Each local region of the film is optimized to block mirror images from its corresponding surface while transmitting virtual images, achieving localized control over image quality across the expanded field of view
Solution Approach 2:
The linear polarization film is divided into multiple polarization parts, each corresponding to a specific side surface of the lens. This segmentation allows independent optimization of polarization directions for each display region, preventing cross-interference between mirror images from different surfaces
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 configuration effectively blocks mirror images, allowing users to see a clear virtual image without overlap, thereby enhancing the user's field of view and image clarity.
Implementation Method 1
the anti-reflective module includes: a linear polarization film on at least a side surface of the lens
Implementation Method 2
a retardation film between the linear polarization film and the display module
Implementation Method 3
a lens including a reflective mirror
Data Source
AI summary
An augmented reality providing device includes a lens including a reflective mirror, a display module on at least one side surface of the lens and configured to display an image, and an anti-reflective module between the display module and the lens.