Virtual Display Device with Expandable Convex and Concave Mirrors
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Solution Overview
Problem
Existing mobile phone screen amplification projectors face limitations in expanding their projection mirror and magnifier, which restricts the effective enlargement of images for better viewing convenience.
Innovation Solution
A virtual display device with a reflective module using a convex mirror and a magnification module with a concave mirror, both connected to a fixed base that allows for upward elasticity and adjustable positioning, enabling image enlargement and stable projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mobile phone screen amplification projector is used to enlarge images, then the viewing convenience is improved, but the projection mirror and magnifier cannot be expanded which limits the enlargement capability
Solution Approach 1:
The patent applies the dynamics principle by making the projection mirror and magnifier expandable and collapsible through a mechanical structure with connecting arms and elastic components. The mirrors can transition between a folded state (small projection area) and an expanded state (large projection area), allowing the device to adapt to different viewing needs while maintaining portability.
Solution Approach 2:
The patent implements the nesting principle by folding the projection mirror and magnifier into a compact configuration when not in use. The mirrors are nested within the device body through the connecting arm mechanism, reducing the overall size for portability while allowing full expansion when projection is needed.
2Adaptability or versatility
If the projection mirror and magnifier are made expandable, then the enlargement capability is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the optical system into separate expandable modules - the projection mirror mounted on one connecting arm and the magnifier on another. This modular approach allows each component to be independently controlled and folded, simplifying the overall mechanism compared to a monolithic expandable structure.
Solution Approach 2:
The patent implements self-service through the use of elastic components (springs or elastic bands) that automatically provide the force needed to expand and maintain the mirrors in their operational positions. The elastic components store and release mechanical energy, eliminating the need for complex motors or actuators to drive the expansion mechanism.
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 effectively enlarges mobile phone images by approximately four to six times, providing a more comfortable viewing experience with adjustable image distance, addressing the limitations of previous technologies.
Implementation Method 1
the reflector is a convex mirror, the reflector receives a projection image and reflects the projection image
Implementation Method 2
the magnification piece is a concave mirror, the magnification piece receives a reflecting image from the reflector and magnifies the reflecting image
Implementation Method 3
the fourth torsion spring provides an upward elasticity for the reflector to flip upwards
Implementation Method 4
the fulcrum shafts are corresponded to a fourth torsion spring, the fourth torsion spring provides an upward elasticity for the reflector to flip upwards
Implementation Method 5
the damper is provided to let the flip speed of the magnification module become stable and constant
Data Source
AI summary
The invention relates to a virtual display device including a fixed base, a reflective module and a magnification module, the feature is that the fixed base is connected to a back cover by a second shaft group of the magnification module to form a box body, the fixed base is used to store a reflector and a bracket for facilitate storage, the virtual display device is provided to enlarge images after being opened.