Mutual Boosting Light Sources for High Lumen Projection
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Solution Overview
Problem
Existing LED projecting systems fail to meet the demands of high lumen output and image quality required in entertainment lighting, with low efficiency in power consumption versus light output and significant light loss due to the inefficient coupling of light through the optical gate.
Innovation Solution
The illumination device employs a light source module with multiple light sources and light collecting means, where light is angled to intersect in a common volume, and a projecting system with an acceptance angle, allowing for light modification and reflection to increase luminance by converting shorter wavelengths into longer wavelengths using color converting materials, such as phosphors or dichroic filters, and optimizing light collection and projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light sources are added to increase lumen output, then light output increases, but power consumption increases proportionally and efficiency decreases
Solution Approach 1:
The patent recovers back-reflected light that would otherwise be lost by redirecting it through a light modifier back onto the light sources, converting it into useful light output and improving overall system efficiency
Solution Approach 2:
The patent creates a continuous light recycling loop where back-reflected light is continuously redirected and reused, maximizing the utilization of light energy and maintaining high lumen output without proportional increases in power consumption
2Illumination intensity
If a large number of light sources are used to achieve high lumen output, then light output increases, but the device complexity and space requirements increase
Solution Approach 1:
The light sources serve dual functions: generating initial light and acting as conversion media for recycled light, eliminating the need for separate conversion components and reducing overall device complexity
Solution Approach 2:
The light sources perform multiple functions including light generation, light conversion, and light recycling, while the light modifier serves both as a beam shaping element and a light recycling component, reducing the total number of components needed
3Stability of the object's composition
If only a central part of light beams is coupled through the gate to provide uniform illumination, then illumination uniformity improves, but light loss increases
Solution Approach 1:
The patent recovers light that would otherwise be lost at the edges by redirecting back-reflected light through the light modifier, capturing and reuseing light energy that would normally be discarded to maintain illumination uniformity
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 setup increases the intensity of the outgoing light by 5-19% by recycling back-reflected light, enhancing lumen output and maintaining uniform illumination while reducing power consumption and space requirements.
Implementation Method 1
converting shorter wavelengths into longer wavelengths using color converting materials, such as phosphors
Implementation Method 2
converting shorter wavelengths into longer wavelengths using color converting materials, such as phosphors or dichroic filters
Implementation Method 3
light collecting means, where light is angled to intersect in a common volume
Implementation Method 4
a projecting system with an acceptance angle, allowing for light modification and reflection
Data Source
Figure 1a
Figure 1b
Figure 2a~2b
AI summary
The present invention relates to an illumination device comprising a number of light sources and a number light collecting means, where the light collecting means collect light generated by the first light sources and convert the light into a source light beam propagating primarily along a primary optical axis. At least one light modifier is positioned along the primary optical axis and reflect at least a part of the light. A first light source comprises a light converting material capable of converting light into longer wavelengths and a second light source generates light having at least one spectral component which can be converted by the converting material of the first light source. The first and said second light source are mutually positioned in relation to the primary optical axis such that at least a part of a the second source light beam hits the first light source after being reflected by said light modifier.