AR Display Waveguide Alignment via Simultaneous Image Capture
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Solution Overview
Problem
Augmented reality display systems based on optical waveguides face misalignment issues between displayed images and surrounding scenes, leading to poor fusion of virtual and actual reality, and low light efficiency due to inadequate real-time monitoring and adjustment processes.
Innovation Solution
A display system comprising an image display device, an optical waveguide element, and an image acquisition device that simultaneously acquires and monitors the surrounding and displayed images, using a calibration device to obtain matching information and control the image display to improve alignment and light transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If an optical waveguide is used to achieve lightweight and compact AR display, then the device portability is improved, but misalignment between displayed images and surrounding scenes occurs leading to poor fusion quality
Solution Approach 1:
The patent implements a feedback mechanism where an image acquisition device continuously captures both the displayed image and surrounding scene, and a calibration device processes these images to generate alignment correction data. This feedback loop enables real-time monitoring and adjustment of image position, orientation, and size parameters to maintain precise fusion between virtual and real scenes despite device movement or manufacturing variations.
Solution Approach 2:
The patent performs preliminary calibration by capturing images of alignment markers or features in the surrounding scene before actual operation. The calibration device pre-calculates transformation parameters and stores correction data that compensates for systematic misalignment issues, enabling faster real-time adjustment during actual AR display operation.
2Manufacturing precision
If real-time monitoring and adjustment processes are implemented to improve image alignment, then the fusion quality is improved, but the device complexity increases
Solution Approach 1:
The patent integrates multiple functions into unified components: the image display device also serves as an image acquisition device by capturing both displayed and surrounding images through its transparent display structure. The calibration device performs multiple tasks including image processing, parameter calculation, and correction generation, reducing the need for separate dedicated components and simplifying overall system architecture.
3Adaptability or versatility
If the image display device is made transparent to receive surrounding images, then the fusion capability is improved, but light transmission efficiency decreases
Solution Approach 1:
The patent applies different optical properties to different regions or aspects of the image display device. The display structure allows selective transparency where needed to capture surrounding scene light while maintaining high light transmission efficiency for the displayed image path. This localized optimization enables both fusion capability and light efficiency to coexist by addressing each requirement in its most suitable region.
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
Enhances the fusion of virtual and actual reality by ensuring accurate alignment and increases light efficiency by optimizing the propagation and reflection of images within the optical waveguide, improving user experience and energy efficiency.
Implementation Method 1
optical waveguide element is configured to receive light of the first image, and transmit the light of the first image to the image display device
Data Source
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AI summary
A display system and an image display method are disclosed. The display system (100) includes an image display device (110), an optical waveguide element (120), an image acquisition device (131) and a calibration device (134). At least part of the image display device (110) is configured to be at least partially transparent, so as to at least partially receive a surrounding image for an opposite side (162) of the image display device (110) at a display side (161) of the image display device (110); the image display device (110) is further configured to display a first image received by the image display device (110) at the display side (161); the image acquisition device (131) is provided at the display side (161) of the image display device (110), and is configured to be capable of simultaneously acquiring the surrounding image and the first image; and the calibration device (134) is configured to obtain matching information based on the surrounding image and the first image acquired by the image acquisition device (131). The display system and the image display method improve the effect of fusion of the displayed images and the outside scene through simultaneously acquiring the surrounding image and the first image.