Projection Display System Using Retroreflective Passive Screen
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Solution Overview
Problem
Existing projection technologies lack the ability to reconstruct 3D objects in a realistic manner by projecting images directly onto the object's surface, leading to computationally intensive processes and limited visual enhancement when not done on the object itself.
Innovation Solution
A projection display system comprising a head-mounted device with a high-resolution camera and projector unit, using a passive screen with a semi-transparent retroreflective layer to capture and project images in real-time, allowing for dynamic scaling and adjustment based on the object's boundaries, enabling realistic reconstruction and interactive content display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If digital reconstruction is performed without using the physical object as a base model, then computational resources are reduced, but visual realism and apparent visual advantages are lost
Solution Approach 1:
The patent uses the physical object itself as a base model or copy for projection, rather than creating a purely digital reconstruction. This allows the system to project images directly onto the physical object's surface, maintaining visual realism while reducing the need for complex computational rendering of the entire object geometry.
2Device complexity
If projection is performed without a display layer on the object surface, then system complexity is reduced, but visual enhancement and realistic reconstruction are limited
Solution Approach 1:
The patent employs a display layer in the form of a flexible thin film or sheet that can be placed on the object surface. This display layer serves as an intermediate medium that enhances visual output by providing a controlled projection surface, improving image quality and realism without requiring complex integration of projection components directly into the object.
3Productivity
If real-time projection and interaction are implemented, then user engagement and visual enhancement are improved, but computational load and processing requirements increase
Solution Approach 1:
The display layer acts as an intermediary between the projection system and the object, enabling real-time visual feedback and interaction. By projecting onto this intermediate surface rather than requiring complex real-time rendering and tracking of the entire 3D object, the system achieves real-time performance with reduced computational requirements.
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
Enables real-time, scalable, and interactive projection of images onto objects, providing enhanced visual reconstruction and privacy for the viewer, while maintaining optical gain and high brightness, suitable for various applications including virtual try-ons and museum displays.
Implementation Method 1
a passive screen with a semi-transparent retroreflective layer to capture and project images in real-time
Implementation Method 2
a passive screen with a semi-transparent retroreflective layer
Data Source
AI summary
A projection display system may be used to display projected images on an image display layer embedded on the surface of an object. The projection display system may include an image capturing device, a projector unit and a passive screen. The passive screen may include a display layer effecting display of at least one image projected thereon. The passive screen is further placeable on a surface of an object in the manner that said image capturing device in optical communication with said passive screen identifies physical boundaries of said passive screen and the projector unit projects at least one image scaled onto the passive screen within the boundaries thereof.