Autostereoscopic 3D Imaging via Holographic Diffuser and Gesture Detection
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Solution Overview
Problem
Current 3D displays require specialized glasses, and there is a need for a cost-effective method to display 3D images without glasses while also enabling gesture recognition.
Innovation Solution
A 3D imaging system comprising an imaging device, a holographic diffuser, and a mirror arrangement that projects and reflects images to create an autostereoscopic view, allowing for gesture detection without the need for specialized glasses, using a projector and camera to direct images in distinct directions and detect movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specialized glasses are used for 3D display, then 3D image quality is improved, but device complexity and cost increase
Solution Approach 1:
The patent removes the specialized glasses component from the 3D display system. Instead of requiring users to wear active or passive 3D glasses, the system uses a holographic diffuser that projects 3D images directly into the air, extracting the essential 3D display function while eliminating the need for additional user equipment.
Solution Approach 2:
The holographic diffuser acts as an intermediary between the projector and the viewer. It converts 2D projected images into 3D holographic images by diffracting light in multiple directions, creating the illusion of three-dimensional objects floating in space without requiring specialized glasses.
2Adaptability or versatility
If multiple projected images are displayed in distinct directions, then autostereoscopic viewing is enabled, but device complexity increases
Solution Approach 1:
The holographic diffuser serves multiple functions: it diffracts light to create 3D images, enables autostereoscopic viewing (multiple viewing angles simultaneously), and works with standard projectors. This multi-functionality achieves versatile viewing capabilities without proportionally increasing system complexity.
Solution Approach 2:
The system transitions from 2D projection to 3D holographic display by adding the vertical dimension through the holographic diffuser. Multiple projected images are displayed in distinct horizontal directions while the diffuser adds vertical angular dispersion, creating true 3D autostereoscopic viewing.
3Ease of operation
If gesture detection is added to the system, then interactivity is improved, but device complexity and cost increase
Solution Approach 1:
The imaging device performs dual functions: projecting 3D images and detecting gestures. By using the same hardware components for both projection and detection, the system achieves interactive gesture control without adding separate dedicated gesture recognition equipment, thereby limiting the increase in device complexity.
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 the display of autostereoscopic 3D images without glasses and detects gestures in a cost-effective manner, allowing for flexible viewing positions and interactive control of the displayed scene.
Implementation Method 1
The mirror arrangement is configured to reflect the plurality of projected images from the imaging device toward the holographic diffuser
Implementation Method 2
display an autostereoscopic image of the scene in the holographic diffuser
Implementation Method 3
The imaging device is also configured to detect a plurality of received images from the distinct directions
Data Source
AI summary
A three dimensional (3D) imaging system configured to display an autostereoscopic image of a scene toward a viewing area, and detect gestures occurring in the viewing area. The system includes an imaging device configured to project a plurality of projected images in distinct directions, and each projected image is characterized as a distinct perspective view of the scene. The imaging device is also configured to detect a plurality of received images for the purpose of detecting gestures. The system also includes a holographic diffuser, and a mirror arrangement configured to reflect the plurality of projected images from the imaging device toward the holographic diffuser to display an autostereoscopic image of the scene in the holographic diffuser, and reflect a plurality of perspective images from the viewing area toward the imaging device such that each received image corresponds to a distinct perspective view of the viewing area.