Pepper's Ghost Display with Polarization Optics
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Solution Overview
Problem
Current vehicle entertainment systems lack the ability to provide a centrally located floating three-dimensional image that can be viewed by all passengers, failing to create an immersive camp-fire like atmosphere.
Innovation Solution
A system utilizing a Pepper's ghost image chamber with a linear polarizer between a transparent display and reflectors, filtering light to increase image contrast and allowing only S-Polarized light to pass through, enabling the creation of a centrally located floating image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transparent display with reflectors is used to create a floating image, then a centrally located floating image can be viewed by all passengers, but the image contrast is reduced due to light leakage and reflections
Solution Approach 1:
A linear polarizer is introduced as an intermediary component between the transparent display and the reflectors. The polarizer filters light to allow only S-Polarized light to pass through, which significantly reduces light leakage and reflections while maintaining the floating image effect. This intermediary element resolves the contradiction by enabling both multi-passenger viewing and high image contrast.
Solution Approach 2:
The patent changes the polarization parameter of light traveling through the system. By configuring the linear polarizer to transmit only S-Polarized light and positioning reflectors at specific angles (45 degrees), the system controls light propagation characteristics. This parameter change enables the reflectors to redirect light to multiple passengers while the polarizer maintains contrast by blocking unwanted polarized light components.
2Adaptability or versatility
If multiple reflectors are positioned at different angles to direct images to individual passengers, then each passenger can view the floating image from their position, but the system complexity increases
Solution Approach 1:
The linear polarizer serves multiple functions simultaneously: it filters light to maintain contrast, enables the Pepper's ghost effect, and works with the angled reflectors to direct images to multiple passengers. This multi-functional component reduces overall system complexity compared to using separate solutions for each function.
Solution Approach 2:
The patent utilizes the angular dimension by positioning reflectors at specific angles (45 degrees) relative to the transparent display. This angular arrangement allows a single polarized light source to be distributed to multiple passengers at different positions, achieving multi-passenger viewing without requiring multiple independent display systems.
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 effectively generates a high-quality, centrally located floating image that can be viewed by all passengers, enhancing passenger satisfaction and creating an immersive viewing experience.
Implementation Method 1
filtering, with a linear polarizer positioned between a transparent display and reflectors of the Pepper's ghost image chamber within, light traveling from the transparent display toward the reflectors
Implementation Method 2
reflecting, with the first reflector, the first image to the first passenger, wherein the first passenger perceives the first image floating at a central location within the image chamber
Data Source
AI summary
A system for generating an image display for passengers within a vehicle includes a controller, an image chamber including a first display adapted to project a first image, a first reflector adapted to receive the first image from the first display and reflect the first image to the first passenger, a second display adapted to project a second image, and a second reflector adapted to receive the second image from the second display and reflect the second image to the second passenger, a transparent touch screen display positioned between the first and second reflectors and the passengers and adapted to display information to the passengers within an image plane positioned in front of the first and second images, and a linear polarizer positioned between the transparent display and the first and second reflectors and adapted to filter light traveling from the transparent display toward the first and second reflectors.