Permeable Screen Light Diffusion Units for Shadow-Free Projection
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Solution Overview
Problem
Conventional image display systems using fog or white smoke screens are obstructed by people or objects, causing shadows that block the view of projection images.
Innovation Solution
An image display system comprising a projector and a screen device with multiple light diffusion units that allow image projection from various directions, enabling continuous image display even when people or objects are present, using light diffusion units made of soft fabric materials that can move and transmit light effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fog screen or white smoke screen is used to allow people to move through, then the screen becomes permeable and non-obtrusive, but shadows of people or objects block the projection image
Solution Approach 1:
The screen is divided into multiple independent light diffusion units arranged in an array. Each unit can independently diffuse light, so when one unit is obstructed by a person or object, other units continue to display the projection image, preventing complete shadow obstruction while maintaining screen permeability.
Solution Approach 2:
The patent changes the optical parameters of the screen by using multiple light diffusion units with specific light transmission and diffusion characteristics. This allows the screen to maintain both permeability for people to move through and sufficient light diffusion to minimize shadow effects on the projection image.
2Device complexity
If a single screen is used for image projection, then the structure is simple, but the image display is blocked when people or objects are present
Solution Approach 1:
The screen is segmented into multiple light diffusion units that work together as a unified display system. This segmentation allows the system to maintain reliable image display even when part of the screen is obstructed, as other units can compensate and continue projecting images.
Solution Approach 2:
Each light diffusion unit serves multiple functions: it diffuses light for image projection, allows people to pass through, and can be independently activated. This multi-functionality ensures that the screen maintains both structural simplicity and display reliability under various conditions.
3Ease of operation
If the screen is made soft and permeable for movement, then people can walk through easily, but the screen becomes harder to control for consistent image display
Solution Approach 1:
The screen is divided into multiple discrete light diffusion units that can be independently controlled. This segmentation allows precise control of light diffusion in different areas while maintaining the overall soft and permeable structure, enabling both easy movement through the screen and consistent image display where needed.
Solution Approach 2:
The patent controls the light diffusion characteristics of each unit by adjusting optical parameters such as light transmission and diffusion properties. This allows the screen to maintain its soft, permeable nature for movement while achieving consistent and controllable image display through parameter optimization.
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 system ensures uninterrupted image display from multiple angles, reducing the impact of obstructions and allowing for flexible placement in various environments, such as public spaces and events, with improved visibility and aesthetic effects.
Implementation Method 1
a screen device (100) including a plurality of light diffusion units (101) each having characteristics of light transmission and characteristics of light diffusion
Data Source
AI summary
An image display system that includes: a projector; and a screen device that displays a projection image being a projection result from the projector. In the image display system, the screen device includes a plurality of light diffusion units each having characteristics of light transmission and characteristics of light diffusion, and among the plurality of light diffusion units, the projection image is diffused by a second light diffusion unit after passing through a first light diffusion unit.