Portable Air-Floating Video Display With Polarization Optics
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Solution Overview
Problem
Existing air floating video display apparatuses lack improvements in visual resolution and contrast, and are not practical for portable use, particularly in vehicles, where they could enhance user convenience and safety.
Innovation Solution
The apparatus employs a cylindrical housing with a window, a video display unit, a polarization separator, a retroreflector, and a retardation plate to generate and display high-resolution, polarized video light outside the housing, using a compact design suitable for installation in vehicle bottle holders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional air floating video display apparatus is used, then basic video display function is achieved, but visual resolution and contrast are insufficient
Solution Approach 1:
The patent divides the optical system into distinct functional segments: a liquid crystal display panel for video generation, a polarization separator for light direction control, and a retroreflector for image projection. This segmentation allows each component to be optimized for its specific function, improving overall visual resolution while maintaining manageable device complexity through modular design
Solution Approach 2:
The patent introduces a polarization separator as an intermediary component between the liquid crystal display panel and the retroreflector. This mediator controls the polarization state of light, enabling precise manipulation of light paths to enhance contrast and resolution without requiring direct complex interactions between the display panel and projection elements
2Ease of operation
If conventional air floating video display apparatus is used, then video display function is achieved, but portability and ease of installation are poor
Solution Approach 1:
The patent merges multiple functional components (light source, display panel, polarization separator, retroreflector) into a single integrated housing unit. This combination creates a self-contained portable device that can be easily transported and installed in various locations, including vehicle bottle holders, without requiring complex external support systems
Solution Approach 2:
The patent designs the housing to serve multiple functions: it protects internal components, provides structural support, and includes a window portion for video projection. The compact cylindrical design allows the device to be universally installed in various positions and environments, enhancing portability while maintaining all necessary functions within a single unit
3Reliability
If conventional air floating video display apparatus is used, then basic display function is achieved, but ghost images and reduced video quality occur
Solution Approach 1:
The patent applies specific optical properties to localized components: the polarization separator is designed to selectively transmit or reflect light based on its polarization state, while the retroreflector is positioned and oriented to return light precisely to the viewer's position. This localized optimization of optical qualities ensures high video quality and eliminates ghost images by controlling light paths at each stage of the optical system
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 provides high-visibility, portable air floating video displays that can be used anywhere, enhancing user convenience and safety by allowing easy installation in vehicles, with reduced power consumption and minimized ghost images.
Implementation Method 1
a liquid crystal display panel configured to generate the video light of a specific polarized wave for forming the air floating video based on a light from the light source apparatus
Implementation Method 2
a polarization separator which is provided inside the housing and is configured to transmit the video light of the specific polarized wave from the video display apparatus and reflect the video light from a retroreflector
Implementation Method 3
the retroreflector which is provided inside the housing and is configured to retroreflect the video light from the polarization separator
Implementation Method 4
a retardation plate provided on a retroreflection surface of the retroreflector; the video light which has been subjected to polarization conversion by passing through the retardation plate is reflected by the polarization separator toward the window portion
Implementation Method 5
a plane mirror which is arranged in a space connecting the video display apparatus and the polarization separator inside the housing and is configured to reflect the video light of the specific polarized wave from the video display apparatus toward the polarization separator
Implementation Method 6
the air floating video is displayed outside the housing by the video light which has transmitted through the window portion
Data Source
AI summary
A compact and portable air floating video display apparatus includes a housing that can be installed in a bottle holder in a vehicle. A video display apparatus, a beam splitter, a retroreflector, a retardation plate, and a plane mirror are provided in the housing. In the air floating video display apparatus, a video light of a specific polarized wave from the video display apparatus is reflected by the plane mirror, transmitted through the beam splitter, and subjected to polarization conversion by being reflected by the retroreflector and passing through the retardation plate. Then, the video light is reflected by the beam splitter and transmitted through the window, thereby displaying an air floating video outside the apparatus.