LED Emitter Cooling Channels for Light Redirection
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Solution Overview
Problem
Existing light emitters, particularly those using LED elements, face inefficiencies in light distribution and intensity due to the uniform spread of light over a wide solid angle range, and often require additional optics for redirection, which complicates their structure and reduces efficiency.
Innovation Solution
An emitter design that incorporates a substrate with LED elements and an active cooling unit featuring cooling channels arranged in the light beam path, allowing for light redirection without frequency change, thereby adapting emission characteristics and increasing intensity by bundling light in a predefined solid angle range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If additional optics are used for light redirection, then light distribution and intensity can be improved, but device complexity increases
Solution Approach 1:
The patent combines the cooling unit and light redirection function into a single integrated component. The cooling channels are positioned to serve dual purposes: removing heat from the LED elements and redirecting light through their strategic arrangement and reflective surfaces, thereby eliminating the need for separate optics and reducing overall device complexity
Solution Approach 2:
The cooling unit is designed to perform multiple functions simultaneously: it cools the LED elements through fluid circulation and redirects light through its channel geometry and reflective surfaces. This multi-functional design replaces what would traditionally require separate cooling and optical components, simplifying the overall emitter structure
2Illumination intensity
If light is spread uniformly over wide solid angle range, then coverage area is improved, but light intensity in specific direction decreases
Solution Approach 1:
The cooling channels are strategically positioned and shaped to redirect light preferentially in specific directions rather than uniformly in all directions. The channels' geometry and reflective surfaces are designed to concentrate light into targeted beams, creating non-uniform light distribution that prioritizes intensity in specific directions while maintaining adequate coverage
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 enhances light intensity in a targeted direction, simplifies the emitter's structure, and eliminates the need for additional optics, improving efficiency and light distribution while maintaining the original frequency of the emitted light.
Implementation Method 1
The redirection of the light takes place, for example, by reflection and/or refraction of the light at the at least one cooling channel
Implementation Method 2
The redirection of the light takes place, for example, by reflection and/or refraction of the light at the at least one cooling channel
Implementation Method 3
an active cooling unit for cooling the at least one LED element with at least one cooling channel for a coolant
Data Source
AI summary
An emitter and a method for emitting light are described. The emitter has a substrate with a substrate surface and at least one LED element arranged on the substrate surface for generating the light to be emitted. An active cooling unit for cooling the at least one LED element has at least one cooling channel. The at least one cooling channel is arranged on the substrate surface in a beam path of at least one portion of the light to be emitted, which can be generated by means of the at least one LED element, for redirecting the light to be emitted.