Reflecting Structure Virtual LED Array Extension
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Solution Overview
Problem
Current illumination systems for pixelated illumination require a large number of LEDs, leading to high costs and limiting their use mainly to the professional market, while existing solutions fail to efficiently achieve high pixelation with reduced costs.
Innovation Solution
An illumination device utilizing a reflecting structure between the array of light emitting devices and projection optics to create a virtual extension of the LEDs, allowing for high pixelation with a reduced number of LEDs, thereby minimizing costs and improving system efficiency by redirecting otherwise lost light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of LEDs are used to achieve high pixelation, then the degree of pixelation is improved, but the cost and device complexity increase
Solution Approach 1:
The patent uses a reflecting structure to create a virtual copy of the LED array, effectively doubling the pixelation without adding physical LEDs. The reflection creates an apparent extension of the light source array, allowing high-resolution pixelation with a reduced physical component count
Solution Approach 2:
The reflecting structure utilizes the spatial dimension by positioning mirrors at specific angles to redirect light paths. This creates a virtual extension of the LED array in a different spatial configuration, achieving higher pixelation through dimensional manipulation rather than simply adding more LEDs in the original plane
2Measurement precision
If a large number of LEDs are used to achieve high pixelation, then the degree of pixelation is improved, but the cost increases
Solution Approach 1:
By creating a virtual copy of the LED array through reflection, the system achieves high pixelation without the proportional increase in component costs that would result from using twice as many physical LEDs
Solution Approach 2:
The reflecting structure acts as an intermediary element that enables the system to achieve high pixelation indirectly through optical manipulation rather than directly through increased component quantity, thereby reducing overall system cost
3Loss of energy
If conventional illumination systems are used, then the structure is simple, but light distribution efficiency is poor
Solution Approach 1:
The system employs adjustable reflecting surfaces that can dynamically redirect light paths to optimize illumination distribution. This dynamic optical manipulation improves light utilization efficiency by adaptively directing light to where it is needed most
Solution Approach 2:
The reflecting structure ensures continuous and efficient light distribution by capturing and redirecting light that would otherwise be lost, maintaining useful illumination action across the entire target area without interruption or waste
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 solution achieves a high degree of pixelation with reduced LED usage, lowering costs and enhancing system efficiency, enabling the creation of pixelated illumination patterns with improved light distribution and reduced bulkiness of optics.
Implementation Method 1
a reflecting structure having a first opening facing the array of light emitting devices and a second opening facing the projection optics, and a reflective surface connecting the first and second opening
Data Source
AI summary
An illumination device (1) for pixelated illumination of a target area (3) comprising: an array (4) of light emitting devices; projection optics (5) arranged in between the array (4) of light emitting devices and the target area (3); a reflecting structure (6) having a first opening (9) facing the array (4) of light emitting devices and a second opening (10) facing the projection optics (5), and a reflective surface connecting the first and second opening, the surface enclosing and facing an optical axis (11) of the projection optics (5). The projection optics (5) is adapted to image the array (4) of light emitting devices, and a virtual extension thereof created by the reflecting structure (6), onto the target area (3), thereby generating an extended pixelated illumination pattern (2). By utilizing a reflecting structure to create a virtual extension of the array of light emitting devices, a high degree of pixelation can be achieved in the illumination pattern while minimizing the number of light emitting devices required. Thus, increased efficiency and reduce costs can be achieved.