Converging Optical Component Reduces Thermal Stress in Light Collectors
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Solution Overview
Problem
Existing light fixtures struggle to achieve high luminance and effective color mixing while minimizing thermal stress on light collectors, as color filters can reflect light back into the collector, focusing it and causing heating issues.
Innovation Solution
Incorporating a converging optical component between the color filters and the optical gate, which relaxes the requirements for the light collector, allows for higher efficiency in collecting and conveying light, and keeps the color filters out of focus, reducing thermal stress by spreading the reflected light over a larger area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If color filters are placed between the light collector and optical gate to achieve color mixing, then color variety is improved, but thermal stress on the light collector worsens due to reflected light focusing
Solution Approach 1:
A converging optical component is introduced as an intermediary element between the color filters and the light collector. This component modifies the light path so that reflected light from the color filters does not focus back on the light collector, thereby eliminating thermal stress while preserving color mixing functionality
Solution Approach 2:
The harmful focusing effect is extracted and removed from the system by repositioning the color filters outside the focal region of the light collector. The converging optical component enables this extraction by redirecting light paths so that filters are traversed by non-convergent light
2Illumination intensity
If light collector is designed to converge light to optical gate to achieve high luminance, then luminance is improved, but thermal stress on light collector worsens due to focused reflected light
Solution Approach 1:
The converging optical component acts as a mediator that separates the functions of light convergence and color filtering. It allows the light collector to converge light for high luminance while preventing the convergence of reflected light that causes thermal stress
Solution Approach 2:
The optical system is segmented into distinct functional zones: the light collector handles light gathering and initial convergence, the converging optical component manages final convergence to the gate, and the color filters handle color mixing. This segmentation allows each component to operate optimally without interfering negatively with others
3Productivity
If color filters are positioned to be traversed by convergent light to improve color mixing efficiency, then color mixing is improved, but thermal stress on light collector and filters worsens
Solution Approach 1:
The system dynamics are changed by allowing light to traverse the color filters in a non-convergent state. The converging optical component is positioned downstream of the filters, creating a dynamic light path where convergence occurs after color filtering rather than during it
Solution Approach 2:
Color filtering is performed as a preliminary action before final light convergence. The light traverses the color filters in a more distributed state, undergoes color mixing, and only then is converged by the converging optical component to the optical gate
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 configuration enhances light fixture efficiency, achieving high luminance and effective color mixing while mitigating thermal stress on the light collector, allowing for more efficient light collection and reduced heating risks.
Implementation Method 1
a light collector (241) placed between the plurality of light sources (103) and the optical gate (242) and adapted to collect light from the light sources and adapted to project at least a part of said light along said optical axis (247)
Implementation Method 2
a (first) converging optical component (263), such as a first converging optical component (263), placed between the one or more color filters (251, 253) and the optical gate (242)
Implementation Method 3
one or more color filters (251, 253), such as color filters for subtractive color mixing, such as dichroic filters or color gels or the like
Implementation Method 4
such as dichroic filters or color gels or the like
Implementation Method 5
an optical projecting system (243) placed on the opposite side of the optical gate (242) with respect to the plurality of light sources (103) and adapted to collect at least a part of the light emittable from the illumination device and adapted to project at least a part of said light along said optical axis (247)
Data Source
AI summary
There is presented a light fixture (200) comprising an nation device (244) comprising a plurality of light sources (103) emitting light along an optical axis (247); an optical gate (242) arranged along the optical axis; a light collector (241) placed between the plurality of light sources (103) emitting and the optical gate (242) and adapted to collect light from the light sources and adapted to project at least a part of said light along said optical axis (247); and one or more color filters (251, 253), such as color filters for subtractive color mixing, such as dichroic filters or color gels or the like, such as arranged to be traversed by the optical axis (247), placed between the light collector (241) and the optical gate (242), and a converging optical component (263), such as a first converging optical component (263), placed between the one or more color filters (251, 253) and the optical gate (242) and further comprising an optical projecting system (243) placed on the opposite side of the optical gate (242) with respect to the plurality of light sources (103) and adapted to collect at least a part of the light emittable from the illumination device and adapted to project at least a part of said light along said optical axis (247).