See-through Display Stray Light Management via Polarization
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Solution Overview
Problem
Existing see-through computer display systems face challenges in optimizing user experience due to complex operations in managing stray light, which affects the clarity and quality of the displayed content.
Innovation Solution
The implementation of improved stray light management systems in see-through computer display systems, which include advanced optical designs and light suppression technologies to minimize stray light and enhance image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If advanced optical designs and light suppression technologies are implemented to reduce stray light, then the contrast and clarity of displayed content are improved, but the device complexity increases
Solution Approach 1:
The patent introduces a polarization beam splitter as an intermediary optical element that separates light paths based on polarization states. This mediator component directs reflected light (carrying display information) along one path while transmitting ambient light along another path, effectively managing stray light without requiring complex absorption or blocking structures. The beam splitter acts as a smart intermediary that uses polarization properties to automatically route different light types, resolving the contradiction between improving clarity and maintaining system simplicity.
2Manufacturing precision
If stray light management systems are implemented to improve image quality, then the contrast ratio is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The patent utilizes changes in light polarization parameters as it passes through the display stack. By understanding and leveraging how polarization state changes through reflection, transmission, and interaction with display layers, the system can distinguish between reflected display light and transmitted ambient light. This parameter-based approach allows for effective stray light management using relatively simple optical components rather than complex manufacturing processes, thereby enhancing image quality while keeping manufacturing feasible.
3Ease of operation
If complex optical designs are used to minimize stray light, then the user experience is enhanced, but the system becomes more difficult to operate and maintain
Solution Approach 1:
The patent segments the optical system into distinct functional zones: a polarization beam splitter region, a display stack region, and light path separation zones. By dividing the optical path into manageable segments with specific functions, the system achieves effective stray light management through modular design. Each segment performs a specific task (polarization separation, light reflection, light transmission), making the overall complex system easier to understand, operate, and maintain compared to a monolithic complex optical design.
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
The proposed solution effectively reduces stray light, thereby improving the contrast and clarity of the displayed content, leading to an enhanced user experience in see-through computer display systems.
Implementation Method 1
a polarization beam splitter positioned to receive the light and separate the reflected light from the transmitted light
Implementation Method 2
the combiner is configured to reflect the displayed light toward the user's eye and transmit the environmental light
Data Source
AI summary
Aspects of the present invention relate to methods and systems for the see through computer display systems. In embodiments, the systems and methods use curved display panels to generate image light.