Illumination Device Uniform Light Beams Shielding Elements
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Solution Overview
Problem
Illumination devices using multiple LEDs struggle to achieve flexible optical effects and uniform light distribution, as the multiple light sources create an unsatisfactory appearance with visible light dots, especially when using single-color LEDs for color mixing.
Innovation Solution
The illumination device incorporates a group of first light sources and optical lenses, along with shielding and diffusing elements, allowing for varied light beam generation and distribution. Shielding elements ensure each second light source illuminates only one optical lens, while diffusing elements produce a more uniform, wider beam, making the light sources less visible and creating a graphical display without generating beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple LEDs are used to replace single light source, then the illumination area is increased and color mixing capability is improved, but the visible appearance shows multiple light dots which is unsatisfactory
Solution Approach 1:
The patent introduces optical lenses as intermediary elements between the multiple LED light sources and the target surface. These lenses collect and redirect light from multiple LEDs to create a unified light beam appearance, masking the individual LED sources while maintaining their combined illumination capability.
Solution Approach 2:
The patent divides the illumination system into multiple independent LED modules, each with its own optical lens. This segmentation allows each LED-lens combination to function as an independent light beam generator, enabling flexible arrangement and control while achieving uniform overall light distribution through proper spacing and optical design.
2Adaptability or versatility
If multiple LEDs are exposed to viewer for color mixing, then color variety is improved, but the appearance with visible light dots becomes unsatisfactory
Solution Approach 1:
Optical lenses serve as mediators that collect light from multiple LEDs emitting different colors and combine them into unified light beams. This allows color mixing to occur optically rather than visually, maintaining color versatility while hiding the individual LED sources from view.
Solution Approach 2:
Each optical lens is designed with specific optical properties to collect and shape light from its associated LEDs. The local optical quality of each lens is optimized to create uniform beam patterns, and the collective arrangement of these lenses achieves overall uniform light distribution across the illumination area.
3Ease of operation
If shielding elements are added to control light paths, then light beam directionality is improved, but device complexity increases
Solution Approach 1:
The optical lenses perform multiple functions: they collect light from LEDs, shape the light beams, control light direction, and simultaneously mask the individual LED sources from view. This multi-functionality reduces the need for separate shielding components, achieving light beam control without proportionally increasing device 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
This configuration enhances flexibility in generating light beams, provides a more uniform and even light output, and allows optical lenses to act as pixels, offering cost-effective operation with high-power drivers for first light sources and low-power drivers for second light sources.
Implementation Method 1
each of the beam generating elements is configured to collect the light of at least one first light source and is furthermore configured to generate a light beam of the collected light
Implementation Method 2
each of the diffusing elements is arranged between at least one second light source and the corresponding optical lens such that the light emitted by said at least one second light source passes one of the diffusing elements before passing the corresponding optical lens
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
The invention relates to an illumination device comprising a group of first light sources (301), a plurality of optical lenses (501), a plurality of beam generating elements (302) wherein each of the beam generating elements is configured to collect the light of at least one first light source (301) to generate a light beam (350) of the collected light and to pass the generated light beam to one of the optical lenses (501), a group of second light sources (401), and a plurality of shielding elements (420, 421), wherein each shielding element is arranged between at least one of the second light sources (401) and one of the plurality of optical lenses (501) in such a way that said at least one of the second light source illuminates only one of the plurality of optical lenses (501).