Radiation Directing Element for Homogeneous Luminance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current devices for emitting electromagnetic radiation struggle to efficiently combine and direct different wavelengths of light for a uniform luminous impression, particularly in display devices, leading to inhomogeneous luminance and color distributions.
Innovation Solution
A device comprising a radiation-directing element and multiple radiation-emitting arrangements that emit first and second electromagnetic radiations, which can be combined on a coupling-out surface to achieve a homogeneous luminance distribution, using a light guide with reflective components and diffusers to intermix and direct the radiation effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple radiation-emitting components are used to achieve uniform luminance distribution, then the luminance homogeneity is improved, but the device complexity and thermal management difficulty increase
Solution Approach 1:
The device segments the radiation-emitting function into two distinct arrangements: a first radiation-emitting arrangement emitting first electromagnetic radiation and a second radiation-emitting arrangement emitting second electromagnetic radiation. This segmentation allows each arrangement to be optimized independently, reducing overall complexity while achieving uniform luminance distribution through their combined output.
Solution Approach 2:
A radiation-directing element is introduced as an intermediary component between the two radiation-emitting arrangements and the coupling-out surface. This mediator directs and combines the radiation from both arrangements, enabling uniform luminance distribution without requiring direct integration of multiple emitting components in a complex configuration.
2Stability of the object's composition
If multiple radiation-emitting components are used to achieve uniform luminance distribution, then the luminance homogeneity is improved, but the thermal management difficulty increases
Solution Approach 1:
The thermal management system is segmented into separate heat dissipation paths for the first and second radiation-emitting arrangements. This allows independent thermal control and dissipation strategies for each arrangement, preventing heat accumulation that would occur with densely packed multiple emitting components.
Solution Approach 2:
The radiation-directing element also serves as a thermal management intermediary, positioned between the radiation-emitting arrangements and the coupling-out surface. It allows radiation to pass through while providing thermal isolation and directing heat away from the coupling-out surface, maintaining lower operating temperatures.
3Stability of the object's composition
If a radiation-directing element is used to direct first electromagnetic radiation to the coupling-out surface, then the luminance homogeneity is improved, but the device complexity increases
Solution Approach 1:
The radiation-directing element is designed to perform multiple functions simultaneously: it directs the first electromagnetic radiation from the first radiation-emitting arrangement to the coupling-out surface, and it also allows the second electromagnetic radiation from the second radiation-emitting arrangement to reach the coupling-out surface. This multi-functionality reduces the need for additional separate directing components, thereby reducing overall structural complexity.
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
The solution enables a high homogeneity of luminance distribution on the coupling-out surface with a reduced number of radiation-emitting components, optimizing thermal management and extending the lifespan of the components by separate driving and heat dissipation.
Implementation Method 1
a radiation-directing element which directs the first electromagnetic radiation to the radiation coupling-out surface
Implementation Method 2
A first radiation-emitting arrangement has at least one first radiation-emitting component which emits the first electromagnetic radiation. A second radiation-emitting arrangement has at least one second radiation-emitting component which emits the second electromagnetic radiation
Data Source
AI summary
A device for emitting a first and a second electromagnetic radiation (13, 23, 53) via a radiation coupling-out surface (5) along a device beam path. A first radiation-emitting arrangement (1) has at least one first radiation-emitting component (10) which emits the first electromagnetic radiation (13). A second radiation-emitting arrangement (2) has at least one second radiation-emitting component (20) which emits the second electromagnetic radiation (23). Furthermore, the device has a radiation-directing element (3), wherein the radiation coupling-out surface (5) is arranged in the beam path of the second radiation-emitting arrangement (2) and the radiation-directing element (3) directs the first electromagnetic radiation (13) to the radiation coupling-out surface (5).