Foldable Virtual Imaging Display with Rotating Optical Components
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional virtual imaging devices are large, cumbersome, and lack portability due to their size and inability to be easily disassembled, making them prone to damage during transportation.
Innovation Solution
A virtual imaging display device design featuring a base board, rotatable panel, lens mounting board, projecting lens, and half-transmitting mirrors that can be configured into a collapsed state for storage and transportation, with a frustum structure in the deployed state, utilizing grooves, pivot structures, and magnets for stability and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the virtual imaging device is designed with a large size to accommodate all components, then the imaging function is stable, but the portability deteriorates and the device becomes difficult to carry
Solution Approach 1:
The device is divided into multiple independent components including a base board, a panel, a lens mounting board, and multiple half-transmitting mirrors. These segmented components can be folded together to form a compact structure for portability, yet maintain the complete optical path when deployed for imaging operations
Solution Approach 2:
The half-transmitting mirrors are nested within grooves formed in the base board when the device is folded. The lens mounting board is received in a groove in the panel, and the projecting lens is partly received in a groove in the lens mounting board, creating a nested configuration that reduces overall device volume while preserving all functional components
2Ease of operation
If the device is designed to be compact and foldable, then the portability is improved, but the structural complexity increases and assembly becomes more difficult
Solution Approach 1:
Multiple functional components are combined into a unified folded structure where the panel, lens mounting board, and half-transmitting mirrors are all integrated with the base board through rotational connections. This merging creates a compact form factor while maintaining the integrity of each component's function
Solution Approach 2:
The device transitions between a deployed state for imaging and a folded state for portability through rotational movements of the panel and lens mounting board. This dynamic capability allows the structure to adapt its configuration based on operational requirements without permanent structural modification
3Stability of the object's composition
If the components are firmly fixed together, then the structural stability is improved, but the ease of disassembly deteriorates and collision damage during transportation increases
Solution Approach 1:
The device uses multiple separable components connected through rotational joints rather than permanent fixation. This segmentation allows the structure to be stable during imaging operations while enabling easy disassembly and folding for transportation, reducing the risk of collision damage between rigid components
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 device achieves enhanced portability and reduced volume by allowing convenient folding and storage, while maintaining the capability for virtual imaging and expanding functionality with interchangeable lenses, similar to a tablet computer.
Implementation Method 1
An omnidirectional holographic projection system, which is formed by a plurality of half-transmitting mirrors based on the imaging theory of light reflection
Implementation Method 2
a projecting lens configured to be mounted on the lens mounting board
Data Source
AI summary
A virtual imaging display device includes a base board; a panel configured to be rotatably provided at one of sides of the base board; a lens mounting board configured to be rotatably provided at a side of the panel facing the base board; a projecting lens configured to be mounted on the lens mounting board; and a plurality of half-transmitting mirrors configured to be rotatably provided at remaining sides of the base board, respectively. The virtual imaging display device has a deployed state in which the lens mounting board and the half-transmitting mirrors are configured to abut on each other to define together a frustum structure, and a collapsed state in which the half-transmitting mirrors each are configured to rest on the base board, the lens mounting board is configured to rest on the panel, and the panel is configured to rest on the base board.