Mirror Display Assembly With Privacy Screen for Glasses-Free 3D
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Solution Overview
Problem
Existing three-dimensional visual display systems require viewer tracking and stereoscopic glasses, which are inconvenient for users.
Innovation Solution
A display assembly that uses a partially silvered mirror and a privacy screen to create a perception of a three-dimensional scene without the need for viewer tracking or special glasses, incorporating a background display screen, shadow display screen, and foreground display screen to enhance the 3D effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If viewer tracking and stereoscopic projection systems are used to create a 3D perception, then the 3D effect is achieved, but the device complexity and requirement for special glasses increase
Solution Approach 1:
The patent uses a camera to capture the real scene and displays it on a screen, creating a visual copy of the three-dimensional scene. This allows observers to perceive 3D effects through the displayed image without requiring complex tracking systems or stereoscopic glasses, thus resolving the contradiction between 3D perception accuracy and system complexity
Solution Approach 2:
The patent replaces mechanical tracking systems and stereoscopic projection mechanisms with a simpler camera-based imaging system. By using optical imaging principles rather than mechanical tracking, the system achieves 3D perception with reduced complexity and without requiring special glasses
2Adaptability or versatility
If the scene display screen has a wide viewing angle, then the observer can view from different positions, but secondary images become visible which reduces 3D perception quality
Solution Approach 1:
The patent applies a privacy screen with specific optical properties to the scene display screen. This privacy screen allows light to pass through at certain angles while blocking it at other angles, creating different optical properties in different directions. This resolves the contradiction by allowing wide viewing angles while preventing secondary images from reaching the observer's eyes
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 assembly effectively creates a 3D perception by limiting direct viewing of the scene display screen and using mirrors and additional screens to enhance depth cues, allowing observers to perceive a 3D image without the need for special equipment.
Implementation Method 1
a first mirror (5) having a reflection side ('first reflection side') and a transmission side ('first transmission side'), the first reflection side mounted at an angle to the scene display screen (3) for illumination thereby
Implementation Method 2
a privacy screen (41) mounted over the scene display screen (3) for reducing viewing angle
Data Source
AI summary
A display assembly includes: a scene display screen; a privacy screen mounted over the scene display screen; a first mirror having a reflection side (“the first reflection side”) and a transmission side (“the first transmission side”). The first reflection side is mounted at an angle to the scene display screen for illumination; a background display screen faces the first transmission side for illumination thereof; and a housing arranged about the scene display screen, background display screen and first mirror for reducing ambient light within the housing including an opening for viewing of the reflection side of the first mirror therethrough. An image generation assembly is coupled to the scene display screen for producing a moving scene image thereon. The observer views the background display screen and the scene display screen simultaneously when viewing the reflection side of the first mirror and the privacy screen prevents viewing a secondary scene image.