Single Panel VR Display With Wavelength-Selective Filter Lenses
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Solution Overview
Problem
Current VR display technologies require two screens to display left-eye and right-eye images, which complicates alignment and increases fabrication and installation difficulties, and limits field of view due to the need for strict alignment of these screens.
Innovation Solution
A display apparatus using a single display panel with a filter device comprising a first and second filter lens, where the wavelength ranges of light transmitted by each lens do not overlap, allowing independent light beams for left-eye and right-eye images to be generated without a physical light barrier, enabling a stereoscopic effect without the need for two screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two screens are used to display left-eye and right-eye images, then the stereoscopic effect is achieved, but the alignment complexity and fabrication difficulty increase
Solution Approach 1:
The patent merges the function of two separate screens into a single display panel. The display panel displays both left-eye and right-eye images simultaneously, and the filter device separates the light paths for each eye. This combining approach eliminates the need for precise alignment between two screens while maintaining the stereoscopic effect.
Solution Approach 2:
The filter device acts as an intermediary between the single display panel and the user's eyes. It receives light from the display panel and directs it to the appropriate eye based on wavelength filtering, replacing the need for two separate screens and their complex alignment mechanisms.
2Reliability
If two screens are used to display left-eye and right-eye images, then the stereoscopic effect is achieved, but the fabrication and installation difficulty increase
Solution Approach 1:
By combining two screens into one display panel with an integrated filter device, the patent reduces the number of components that need to be fabricated and installed. The single display panel can be manufactured as one unit, and the filter device is integrated with it, simplifying both fabrication and installation processes compared to aligning and assembling two separate screens.
3Reliability
If strict alignment of two screens is required, then the stereoscopic effect is maintained, but the field of view is limited
Solution Approach 1:
The filter device serves as an intermediary that allows the display panel to cover a wider area without requiring strict alignment. The filter directs different wavelength ranges to different eyes, enabling the system to maintain stereoscopic effect while expanding the display area and field of view beyond what two aligned screens could provide.
4Device complexity
If a single display panel is used with filter device, then the structure is simplified and weight is reduced, but the light transmission efficiency must be optimized
Solution Approach 1:
The filter device is designed to transmit specific wavelength ranges to different eyes with high efficiency. By optimizing the wavelength transmission parameters of the filter, the patent minimizes energy loss while maintaining the simplified single-panel structure. The filter allows sufficient light transmission in its designated wavelength ranges to ensure bright and clear images.
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 solution simplifies the structure and reduces weight of the display apparatus, enhances field of view, and improves the stereoscopic effect by allowing the left-eye and right-eye images to be seen at a larger field of view, reducing fabrication and installation complexity.
Implementation Method 1
wavelength ranges of light that the first filter lens allows to transmit do not overlap with wavelength ranges of light that the second filter lens allows to transmit
Data Source
AI summary
A display apparatus includes a display panel configured to output light for displaying a mixed image including a first image and a second image, and a filter device disposed at a light exit side of the display panel and including a first filter lens and a second filter lens, orthographic projections of the first and second filter lenses on a light-emitting surface of the display panel do not overlap, and wavelength ranges of light that the first filter lens allows to transmit do not overlap with wavelength ranges of light that the second filter lens allows to transmit. Wavelength ranges of light for displaying the first image are within the wavelength ranges of the light that the first filter lens allows to transmit, and wavelength ranges of light for displaying the second image are within the wavelength ranges of the light that the second filter lens allows to transmit.