Radiation Device Wavelength Conversion Segmentation
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Solution Overview
Problem
The use of light-emitting diodes (LEDs) for general lighting is hindered by the unnatural perception of their color temperature, which is difficult to set and control, leading to reduced brightness and complex, costly light mixing to achieve desired color or color temperature settings, and varying LED aging complicates electronic control.
Innovation Solution
A radiation-emitting device with a component that emits electromagnetic primary radiation onto a carrier with distinct sub-areas, utilizing wavelength conversion substances to adjust secondary radiation by changing the alignment of the radiation-emitting component relative to the carrier, allowing for variable intensity, color temperature, and color location without altering the primary radiation's intensity or spectral range, thus simplifying control and eliminating the need for complex electrical regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LEDs with different wavelengths are used to achieve desired color temperature, then color temperature adjustment is possible, but device complexity and control difficulty increase
Solution Approach 1:
The patent divides the carrier into multiple sub-areas, each coated with different wavelength conversion substances. This segmentation allows each sub-area to independently convert specific wavelengths, enabling color temperature adjustment without complex electronic control of multiple LEDs. The spatial separation of conversion functions simplifies the overall system control architecture.
Solution Approach 2:
Different sub-areas of the carrier are assigned different wavelength conversion substances with specific properties tailored to their location. This local differentiation enables precise control of spectral output by selecting which sub-areas receive excitation radiation, achieving color temperature variation through spatial selection rather than electronic dimming control.
2Adaptability or versatility
If multiple LEDs are operated at different powers to control color temperature, then color setting is achievable, but achievable brightness suffers
Solution Approach 1:
The patent changes the physical parameter of radiation direction and spatial alignment rather than electrical power parameters. By rotating or repositioning the radiation source relative to the carrier, different sub-areas are selectively excited, achieving color temperature change without reducing overall power output. The full power of the radiation source is always utilized, just directed at different conversion zones.
3Adaptability or versatility
If electronic control is used to adjust color temperature of multiple LEDs, then color temperature variation is possible, but control becomes more difficult due to LED aging
Solution Approach 1:
The patent replaces the electronic control system with a mechanical alignment system. Instead of electronically adjusting the intensity of multiple LEDs, a single radiation source is mechanically rotated or repositioned to align with different sub-areas of the carrier. This mechanical approach eliminates the need for complex electronic balancing and compensation for LED aging, as the excitation source itself remains constant.
4Adaptability or versatility
If a rotating wheel with phosphors is used to produce different colors, then color variation is achieved, but device complexity increases
Solution Approach 1:
The carrier serves multiple functions simultaneously: it acts as the structural support, the mounting platform for wavelength conversion substances, and the spatial selector for different color outputs. This multi-functionality eliminates the need for separate phosphor wheels or additional optical components, simplifying the overall device architecture while maintaining color variation capability.
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
Enables flexible and efficient adjustment of secondary radiation parameters, allowing for seamless transitions between cold-white and warm-white luminous impressions without affecting the radiation-emitting component's operating state, thereby optimizing output power and simplifying control mechanisms.
Implementation Method 1
a first wavelength conversion substance which is arranged in the first sub-area for at least partial conversion of the primary radiation
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3A~3B
AI summary
A radiation-emitting device emitting electromagnetic secondary radiation (5) comprises particularly at least one radiation-emitting element (1), which during operation emits electromagnetic primary radiation (4) onto a carrier (29) arranged in the beam path of the radiation-emitting element (1), said carrier having a first and a second partial region (21, 22) and a first wavelength conversion substance (31) arranged in the first partial region (21) for the at least partial conversion of the primary radiation (4), wherein the first and second partial regions (21, 22) are different from each other, the secondary radiation (5) emitted by the radiation-emitting device comprises the electromagnetic radiation emitted by the first and/or second partial regions (21, 22), and the secondary radiation (5) can be varied relative to the carrier (2) by changing the orientation of the radiation-emitting element (1).