Lighting Device Light Control Element Dynamic Color Mixing
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Solution Overview
Problem
Current lighting technologies, particularly in the entertainment industry, face challenges in achieving adjustable and precise color control for lighting effects, as they rely on fixed color outputs from phosphor-based systems without the ability to dynamically alter the ratio of reflected and transmitted light components.
Innovation Solution
A lighting device incorporating a pump light source and a phosphor arrangement with a light control element that splits the pump light beam into reflected and transmitted parts, allowing for adjustable control of the ratio between these components, enabling the generation of various colors, including white light with different Correlated Color Temperatures, through wavelength conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed phosphor-based lighting system is used, then the structure is simple, but the color control flexibility and adjustability are limited
Solution Approach 1:
The patent introduces a light control element that can dynamically adjust the ratio of reflected to transmitted light by changing its position or orientation. This dynamic adjustment capability allows the system to control the proportion of pump light reaching different phosphors, thereby achieving flexible color control without requiring multiple independent light sources or complex switching mechanisms.
Solution Approach 2:
The patent divides the pump light beam into separate reflected and transmitted components using the light control element. By segmenting the light path in this way, the system can independently control which phosphors receive which portions of the pump light, enabling precise color mixing and control while maintaining a relatively simple overall structure.
2Adaptability or versatility
If multiple phosphors are used to achieve color control, then color variety is improved, but the device complexity increases
Solution Approach 1:
The light control element serves multiple functions: it acts as a beam splitter, a light ratio controller, and a path director. By making this single component multi-functional, the patent avoids the need for separate mechanisms to control different phosphors, thereby achieving color variety without proportionally increasing device complexity.
Solution Approach 2:
The light control element acts as an intermediary between the pump light source and the phosphor arrangements. It mediates the light distribution by controlling the ratio of reflected to transmitted light, simplifying the overall system architecture while enabling precise control over which phosphors receive pump light and in what proportions.
3Ease of operation
If the pump light ratio is fixed, then the system is simple to operate, but the color temperature adjustment capability is limited
Solution Approach 1:
The light control element can be dynamically positioned or oriented to change the ratio of reflected to transmitted light. This dynamic capability allows operators to adjust color temperature by simply moving or rotating the control element, providing easy operation without requiring complex electronic switching systems or multiple independent control mechanisms.
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 solution allows for precise control of light color, enabling the creation of a wide range of colors and color temperatures, enhancing the flexibility and dynamic capabilities of lighting systems without increasing luminance, and allowing for simultaneous generation of multiple colored light components.
Implementation Method 1
the laser radiation impinging on the phosphor is converted by the phosphor by mean of wavelength conversion at least partly into wavelength-converted useful light
Implementation Method 2
the light control element is configured to split the pump light beam into a reflected part and a transmitted part
Implementation Method 3
the light control element is configured to split the pump light beam into a reflected part and a transmitted part
Data Source
AI summary
In various embodiments, a lighting device is provided. The lighting device may include: a pump light source; a phosphor arrangement; and a light control element arranged between the pump light source and the phosphor arrangement; wherein the light control element is configured to split the pump light beam into a reflected part and a transmitted part and for controlling the ratio between reflected part and transmitted part; and wherein the phosphor arrangement includes at least one phosphor which can be irradiated with the reflected part and/or transmitted part of the pump light of the pump light source and emits said pump light again at least partly in a wavelength-converted fashion.