LED Module Flat Sector Light Field for Compact Luminaires
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Solution Overview
Problem
Existing LED modules for emitting white light are too large for luminaires with small reflector sizes, as they rely on globe-top dispensing methods that cannot further reduce the light field diameter effectively.
Innovation Solution
The LED module features a light field divided into flat sectors, such as circular and annular sectors, produced by dispensing methods, which significantly reduces the total light emission area by at least 16% compared to traditional globe-top approaches, allowing for smaller diameters and more homogeneous mixed light generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the globe-top method is used to form light spots over LEDs, then individual light spectra can be emitted from different points, but the light field diameter becomes too large (at least 19 mm) for small reflector luminaires
Solution Approach 1:
The light field is divided into multiple flat sectors, each responsible for emitting a specific light spectrum. This segmentation allows the overall light field area to be reduced while maintaining the capability to generate multiple light spectra through coordinated emission from different sectors.
Solution Approach 2:
The invention transitions from point-based light emission (globe-tops) to planar sector-based emission. By utilizing flat sectors arranged in a two-dimensional pattern, the light field achieves more efficient space utilization and reduced diameter while maintaining spectral diversity through the sector arrangement.
2Adaptability or versatility
If multiple individual light points are used to create white light, then different light spectra can be combined, but the mixed light becomes inhomogeneous and color accuracy decreases
Solution Approach 1:
Each flat sector is optimized to emit a specific light spectrum with appropriate intensity characteristics. By assigning different spectral characteristics to different spatial locations (sectors) and coordinating their emission, the system achieves homogeneous mixed light with high color accuracy while maintaining spectral versatility.
Solution Approach 2:
The invention merges the emission from multiple flat sectors into a unified, homogeneous light field. Through coordinated control of the sectors' emission intensities and timing, the individual spectral contributions are blended to produce uniform white light with consistent color properties across the entire light field.
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 enables the creation of a compact LED module suitable for small reflector luminaires, producing a very homogeneous and color-accurate white light with reduced light field area, enhancing the LED module's suitability for small reflector applications.
Implementation Method 1
The potting compound can additionally have scattering particles. The flat sectors can, for example, use white light different color temperatures, e.g. emit so-called cold and/or warm white spectra. The different light spectra are particularly preferably provided in such a way that LED chips/LED strands, which are preferably of identical construction, preferably have a blue light spectrum provide a potting compound with different Fluorescent concentrations and/or phosphors or Fluorescent combinations is applied
Implementation Method 2
The light diffuser gives the LED module an even more homogeneous color impression, i.e. the scattering of the light further improves the mixing of the different light spectra emitted by the light field. The light diffuser also makes it possible to create a diffused light and adjust the brightness of the LED module.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3
AI summary
The invention relates to an LED-module (1) for emitting mixed light, preferably white light, comprising a light field (2''';2'''') which is divided into several flat sectors for dispensing different light spectra. The flat sectors of the light field (2''';2'''') are embodied as sectors of a circle (3c''',3d''';3c'''',3d'''') and sectors of a circular ring (3a''',3b''';3a'''',3b'''').