Foldable Reflector Screen with Mixed Geometric Sections
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Solution Overview
Problem
Conventional foldable reflector screens with single geometric shapes in the central axis section limit design options and require multiple screens to achieve varied light and shadow effects, resulting in increased effort and complexity.
Innovation Solution
A foldable reflector screen with at least two reflection sections of different geometric shapes, where one section is elliptical and the other parabolic, and an additional clamping mechanism allows for varying clamping forces, enabling the combination of multiple reflection properties in a single screen, reducing the need for multiple screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single geometric shape is used for the reflection element, then the structure is simple and easy to manufacture, but the design options are limited and multiple screens are required to achieve varied light effects
Solution Approach 1:
The reflection element is divided into multiple independent reflection sections (first reflection section, second reflection section, third reflection section), each capable of forming different geometric shapes. This segmentation allows each section to be manufactured separately using conventional methods while providing diverse light reflection properties when assembled together, resolving the contradiction between manufacturing simplicity and design versatility.
Solution Approach 2:
The reflector screen combines multiple reflection sections with different geometric configurations (parabolic, elliptical, hyperbolic sections) into a single composite structure. This composite approach enables the screen to provide multiple light reflection patterns simultaneously, eliminating the need for multiple separate screens while maintaining ease of manufacture through modular assembly.
2Adaptability or versatility
If multiple reflector screens are used to achieve varied light and shadow effects, then design options increase, but the effort and complexity increase
Solution Approach 1:
Multiple reflection sections that would traditionally require separate reflector screens are merged into a single integrated screen structure. The first, second, and third reflection sections are arranged in sequence within one screen, providing varied light and shadow effects through their different geometric shapes while simplifying the overall system by eliminating the need for multiple separate screens.
Solution Approach 2:
The single reflector screen performs multiple functions by incorporating different reflection sections that can produce various light reflection patterns (parabolic for parallel beams, elliptical for focused beams, hyperbolic for divergent beams). This multi-functional design replaces what would traditionally require multiple specialized screens, reducing complexity while maintaining versatility.
3Stability of the object's composition
If the spokes are positioned close to the reflection element for structural support, then the structure is stable, but the parabolic shape cannot be achieved without significant bending
Solution Approach 1:
A distance element is introduced as an intermediary component between the shield spokes and the second reflection section. This distance element maintains the structural stability provided by the spoke support while creating the necessary space for the second reflection section to form its parabolic shape without excessive bending of the spokes. The distance element acts as a mediator that reconciles the conflicting requirements of structural support and geometric accuracy.
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 design allows for adjustable light and shadow effects with simple handling, reducing the number of screens required and enabling cost-effective production of complex light beam paths, while ensuring even tension and precise shaping of the reflection sections.
Implementation Method 1
the reflection element is formed from at least two reflection sections, the two reflection sections each having a different geometric shape in a section containing the axis of rotation of the reflector screen
Data Source
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AI summary
The invention relates to a foldable reflector screen (10), comprising a flexible, cloth-like reflection element (11) having an external support and tenter structure (12) and a carrier element (13) with at least one luminous means (14), wherein the reflection element (11) in the stretched state of the reflector screen (10) forms a substantially rotationally symmetrical body with a light exit opening (24), characterized in that the reflection element (11) is formed from at least two reflection sections (25, 26), wherein the two reflection sections (25, 26) have a geometrical shape which is in each case different in a section containing the axis of rotation R of the reflector screen (10).