Transparent Mirror Element for Panoramic Autostereoscopic 3D Display
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Solution Overview
Problem
Conventional 3D projection systems require viewers to wear special glasses and are limited by ambient light, making them ineffective in outdoor environments and inconvenient for applications where mobility is needed, such as shopping malls or amusement parks, and they fail to provide panoramic 3D experiences.
Innovation Solution
A collimated display system using a transmissive and reflective mirror element that creates a multiplane, autostereoscopic 3D display allowing viewers to perceive depth without glasses, with a mirror element that appears transparent and can be designed to surround a viewing space, providing a volumetric display environment and allowing for variable depth perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional 3D projection systems are used, then 3D images can be displayed, but viewers must wear special glasses which reduces ease of operation
Solution Approach 1:
The patent extracts and eliminates the requirement for special 3D glasses from the viewing system. By using a collimated display with a transparent mirror element that creates autostereoscopic 3D images, the system provides depth perception without requiring additional eyewear, thus improving ease of operation while maintaining 3D display capability
Solution Approach 2:
The display system uses human eyes' natural focusing ability to provide stereoscopic vision. The collimated light and transparent mirror element work together to create 3D images that the viewer's brain automatically processes without external assistance, making the viewing experience self-service and无需 additional devices
2Adaptability or versatility
If conventional 3D projection systems are used, then 3D images can be displayed, but they are limited by ambient light making them ineffective in outdoor environments
Solution Approach 1:
The system segments the light path into distinct components: light from the display, reflection from the transparent mirror element, and transmission to the viewer's eye. This segmentation allows the system to control light delivery independently of ambient conditions, enabling 3D display effectiveness in various lighting environments including outdoor settings
Solution Approach 2:
The patent changes the optical parameters of the display system by using a transparent mirror element with specific reflectivity and transmissivity characteristics. This allows the system to adapt to different ambient lighting conditions by optimizing light transmission and reflection properties, making it effective both in indoor and outdoor environments
3Adaptability or versatility
If conventional 3D projection systems are used, then 3D images can be displayed, but they fail to provide panoramic 3D experiences
Solution Approach 1:
The patent transitions from conventional 2D/3D projection to a collimated display that creates virtual images at infinity. By using a transparent mirror element with specific optical properties, the system creates a panoramic 3D experience that surrounds the viewer, adding a dimensional transformation that enables 360-degree viewing without increasing device complexity
4Ease of manufacture
If a transparent mirror element is used to create multiplane display, then cost is reduced and transparency is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies particular optical parameters for the transparent mirror element, including reflectivity between 5-50%, transmissivity between 50-95%, and specific curvature radii. By defining these parameters within ranges rather than requiring exact values, the system achieves cost-effective manufacturing while maintaining the necessary optical performance for collimated display
Solution Approach 2:
The system uses a composite optical assembly combining a transparent mirror element with specific optical properties and a display device. This composite approach allows each component to be manufactured independently with standard precision, while the combination achieves the required collimated display function, reducing overall manufacturing difficulty compared to single-component solutions
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 cost-effective, eye-catching 3D experiences that can be viewed from multiple angles without glasses, effective in various lighting conditions and environments, providing a panoramic and immersive experience by using a transparent mirror element that reflects and transmits light to create a deep, multilayer display.
Implementation Method 1
a fraction of light from the convex screen that strikes a front concave surface of the mirror element is reflected into the viewing space
Implementation Method 2
light from the background space is transmitted through the mirror element for concurrent viewing in the viewing space
Implementation Method 3
the convex screen and the front concave surface of the mirror element are each shaped to have an optical prescription defined for a collimated display such that the fraction of light reflected into the viewing space is collimated
Data Source
AI summary
A display system for creating a multiplane display. The display system includes a viewing space for viewers. The display system includes a convex screen and a mirror element spaced apart from the convex screen to provide a collimated display. The mirror element is both reflective and transmissive of light, and a fraction of light from the convex screen that strikes a front concave surface of the mirror element is reflected into the viewing space. The convex screen and the front concave surface of the mirror element are each shaped to have an optical prescription defined for a collimated display whereby light reflected into the viewing space is collimated to provide variable depth imagery. The display system includes a background space behind the mirror element, and light from the background space from projection screens and illuminated objects is transmitted through the mirror element to viewers in the viewing space.