Curved Geometric Phase Optics for High-Resolution Head-Mounted Displays
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Solution Overview
Problem
Existing display devices, particularly head-mounted displays, face challenges in achieving high-resolution images due to limitations in optical design, which affect image quality.
Innovation Solution
Incorporation of a geometric phase module with a curved cross-section and additional optical layers, including lenses and polarization layers, to enhance image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional optical design is used in head-mounted displays, then the device structure is simpler, but the image resolution and quality are insufficient
Solution Approach 1:
The optical system is divided into multiple functional layers including a first optical layer with a geometric phase module for light path control, and a second optical layer with multiple micro-lenses for individual pixel light management. This segmentation allows each layer to perform specific functions, achieving high resolution while maintaining manageable complexity through modular design
Solution Approach 2:
The patent introduces a geometric phase module with a curved cross-section that operates in the angular dimension, controlling light paths through geometric phase modulation rather than traditional refractive indices. This adds a new dimension to optical control, enabling precise light path management for high-resolution display
2Reliability
If additional optical layers and geometric phase modules are added to improve image quality, then the image resolution and light path optimization are enhanced, but the device structure becomes more complex
Solution Approach 1:
The optical system is divided into multiple functional layers including a first optical layer with a geometric phase module for light path control, and a second optical layer with multiple micro-lenses for individual pixel light management. This segmentation allows each layer to perform specific functions, achieving high resolution while maintaining manageable complexity through modular design
Solution Approach 2:
The geometric phase module serves multiple functions simultaneously: it acts as a polarization controller, light path steerer, and phase modulator. This multi-functionality reduces the need for separate components, thereby managing overall device complexity while improving image quality
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
Improves image quality by optimizing light path and resolution, enhancing the display device's performance in virtual and augmented reality applications.
Implementation Method 1
a geometric phase module having a cross section with a curved shape
Implementation Method 2
a lens between the display panel and the geometric phase module
Implementation Method 3
an absorptive polarization layer on the display panel; a translucent mirror on the absorptive polarization layer
Data Source
AI summary
The present disclosure relates to a display device, and more particularly, to a display device and an optical device whose image quality may be improved. The display device includes: a display panel; and a first optical layer on the display panel, wherein the first optical layer includes a geometric phase module having a cross section with a curved shape.