Aspherical Dome Display Screen for Rear Projection Ergonomics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current non-spherical projection display systems compromise pilot ergonomics due to inconsistent distance between the pilot's eyes and the screen, especially when using widescreen projectors, leading to suboptimal visual experience and resolution utilization.
Innovation Solution
A non-spherical dome display screen with a surface of revolution optimized for viewer ergonomics, featuring a varying radius of curvature defined by specific mathematical formulas, and a multi-projector system providing a wide horizontal and vertical field of view, with a diffusing layer to enhance image quality and contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a spherical surface is used for rear projection, then uniform illumination and high resolution are achieved, but the projector placement becomes complex and widescreen projectors cannot be optimally matched
Solution Approach 1:
The patent applies a spherical screen geometry to enable uniform illumination distribution across the screen surface. The spherical shape ensures that light from multiple projectors positioned around the rear distributes evenly, achieving consistent brightness and high resolution across the entire display area.
Solution Approach 2:
The spherical screen is divided into multiple projection zones, each covered by a separate projector. This segmentation allows widescreen projectors to be positioned at specific angles and distances to optimize their coverage, reducing placement complexity while maintaining overall resolution uniformity.
2Volume of moving object
If faceted screens are used, then projector resolution is optimized and footprint is reduced, but visual ergonomics are strongly compromised due to non-constant distance from viewer eyes
Solution Approach 1:
The patent employs a continuous spherical surface instead of faceted segments. This curved geometry maintains a constant radial distance from the center of the sphere to all points on the screen surface, ensuring that viewers positioned at the center experience uniform viewing distance and angle across the entire field of view, thereby preserving visual ergonomics.
Solution Approach 2:
The spherical screen serves multiple functions simultaneously: it provides a constant viewing distance for ergonomic comfort, enables uniform illumination distribution, and accommodates multiple projectors in a compact arrangement. This multi-functionality resolves the trade-off between footprint reduction and ergonomics preservation.
3Manufacturing precision
If widescreen projectors are used on spherical screens, then more pixels and brightness are lost, but if faceted screens are used, then projector resolution is better utilized
Solution Approach 1:
The patent positions different projectors at specific locations around the spherical screen, optimizing each projector's orientation and distance to match its widescreen format with the local screen geometry. This local optimization minimizes pixel waste and brightness loss at the edges of each projection zone while maintaining high resolution utilization.
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 solution provides a seamless, high-resolution visual experience with improved ergonomics and contrast, effectively utilizing widescreen projectors to offer a wide field of view while maintaining a compact footprint.
Implementation Method 1
a diffusing layer to enhance image quality and contrast
Data Source
AI summary
A non-spherical projection display structure and system that can be optimized for the ergonomics of preferably one viewer inside the display structure or system. The structure or system is preferably for use with widescreen projectors. The non-spherical projection display structure and system creates a visual projection display and method of operating the display that has a wide horizontal and vertical field of view and uses a rear projected display structure having a projection screen surface with a thickness. The display structure has at least one section with a monotonically increasing or decreasing radius of curvature.