Multi-Projector Display With Elevation-Angled Screen
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Solution Overview
Problem
Existing stereoscopic display apparatuses face challenges in reducing apparatus size while maintaining effective image display corresponding to user viewpoints.
Innovation Solution
An image display apparatus comprising multiple projection units with projection axes oriented differently along a first plane, a screen intersecting the first plane at a first elevation angle and diffusing image light at a second elevation angle, and an image generation unit generating image data for displaying viewpoint images based on projection axis directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple projectors are disposed in an arc shape along the horizontal direction to achieve stereoscopic display, then stereoscopic display capability is improved, but apparatus size increases
Solution Approach 1:
The patent introduces elevation angles (first elevation angle for screen intersection, second elevation angle for light output) to transform the conventional horizontal arc arrangement into a three-dimensional configuration. Projectors are arranged with different elevation angles rather than solely in a horizontal plane, enabling stereoscopic display while reducing the horizontal footprint and overall apparatus size.
Solution Approach 2:
The patent changes the spatial parameters of projector arrangement by specifying elevation angles for both screen intersection and light output. This parameter modification allows the system to achieve the same stereoscopic display effect with a more compact configuration, directly addressing the contradiction between display capability and apparatus size.
2Measurement precision
If projection units are arranged with different projection axis directions to display viewpoint images, then image accuracy for user viewpoint is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by assigning different projection axis directions to different projection units based on their specific positions and elevation angles. Each projector is configured with optimized local parameters (projection axis direction) tailored to its position, enabling accurate viewpoint image display while maintaining systematic organization that prevents excessive complexity.
Solution Approach 2:
The patent systematically manages the complexity of multiple projection parameters by defining specific elevation angles for screen intersection and light output. This structured parameter approach allows the system to handle multiple projection units with different axes without becoming unmanageably complex, as the parameters follow a consistent geometric framework.
3Adaptability or versatility
If screen is disposed to intersect with projection plane at different elevation angle to diffuse light, then arrangement flexibility is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes the elevation angle dimension to provide arrangement flexibility. By defining the screen's first elevation angle relative to the projection plane, the system gains freedom in configuring projector positions without being constrained to horizontal alignment, thereby improving adaptability while the angular specification provides clear manufacturing guidance.
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 configuration allows for accurate display of images corresponding to user viewpoints while reducing the apparatus size, enhancing the degree of freedom in arranging projection units and the screen, and improving the precision of image calculation.
Implementation Method 1
the screen that intersects with the first plane at the first elevation angle and diffuses and outputs the image light projected along the first plane at a second elevation angle different from the first elevation angle
Data Source
AI summary
An image display apparatus according to an embodiment of the present technology includes a plurality of projection units, a screen, and an image generation unit. The plurality of projection units projects image light corresponding to image data with reference to projection axes thereof and is disposed such that the projection axes face in directions different from each other along a first plane. The screen is disposed to intersect with the first plane at a first elevation angle (φi) and diffuses and outputs the image light projected along the first plane at a second elevation angle (φo) different from the first elevation angle (φi). The image generation unit generates the image data for displaying a plurality of viewpoint images corresponding to viewpoints at which the screen is observed at the second elevation angle (φo) on the basis of the directions of the projection axes on the first plane.