LED Module Planar Sectors Reduce Light Field Diameter
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Solution Overview
Problem
Existing LED modules for emitting white light have a large light field diameter, making them unsuitable for luminaires with small reflector sizes, and cannot be further reduced using conventional glob top methods.
Innovation Solution
The LED module features a light field divided into flat sectors, reducing the total light emission area by at least 16% compared to traditional glob top methods, with a circular outer contour and circular islands for specific light spectra, and includes a light diffuser for improved color mixing and brightness adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional glob top methods are used to form light points, then the light field can emit different light spectra, but the light field diameter becomes too large (at least 19 mm) for small reflector sizes
Solution Approach 1:
The light field is segmented into multiple planar sectors, each emitting a specific light spectrum. This segmentation allows the total light field area to be reduced while maintaining the capability to emit multiple light spectra through the coordinated operation of different sectors.
Solution Approach 2:
The invention transitions from three-dimensional glob top structures to two-dimensional planar sectors. This dimensional reduction significantly decreases the light field diameter from at least 19 mm to 16 mm or less, making it suitable for small reflector sizes while preserving spectral diversity through planar arrangement of different emitting sectors.
2Area of stationary object
If the light field area is reduced to fit small reflector sizes, then suitability for small luminaires is improved, but the ability to maintain homogeneous white light emission may be compromised
Solution Approach 1:
Different planar sectors are assigned different light spectrum characteristics (local quality), with each sector optimized for specific wavelength ranges. This allows the reduced light field to maintain homogeneous white light emission through the coordinated contribution of sectors with complementary spectral properties.
Solution Approach 2:
Multiple light spectra from different planar sectors are merged to produce homogeneous mixed white light. The combining of red, blue, and phosphor-generated light spectra in the reduced light field area achieves the desired homogeneity despite the compact size.
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 a significantly smaller light field diameter of 16 mm or less, making the LED module suitable for lamps with small reflector sizes while maintaining homogeneous and natural white light emission.
Implementation Method 1
a light diffuser for improved color mixing and brightness adjustment
Implementation Method 2
yellow light generated by a phosphor are emitted by the light points
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3
AI summary
The present invention relates to an LED module (1) that is suitable for emitting mixed light, preferably white light. The LED module (1) has a light-emitting light field (2) that is divided into a plurality of regions for emitting different light spectra. The regions of the light field (2) are planar sectors (3a, 3b, 3c) according to the invention. The LED module (1) is produced by a method in which, for creating the light field (2), first barriers (5) are formed which separate sectors (3a, 3b, 3c) of the light field (2) from each other, and then a transparent casting compound or a casting compound containing a luminescent substance is filled between the barriers (5) of each sector (3a, 3b, 3c). The present invention thereby provides a lighting device that has at least one LED module (1) and preferably one reflector placed on the LED module (1).