Illumination Device with Segmented Diffuser Cover for Uniform Light Output
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Solution Overview
Problem
Existing illumination devices with multiple LEDs create an unpleasant 'funfair' look due to visible light dots, and combining different effect functions in light fixtures is complex, requiring significant processing power and expertise, especially in simple light systems where non-experienced users struggle to create nice light effects.
Innovation Solution
An illumination device with a diffuser cover that separates light sources into diffusing and non-diffusing regions, allowing for individual control of light beams and effect functions, enabling the combination of multiple effect functions with a priority and synchronization schema to create unified and dynamic light effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LEDs are used to replace a single light source, then the lighting coverage and versatility are improved, but the visual appearance deteriorates with an unpleasant 'funfair' look due to visible light dots
Solution Approach 1:
A diffuser element is introduced as an intermediary component between the multiple LED light sources and the viewer. This diffuser scatters the light from individual LEDs, merging them into a uniform light field that eliminates the visible 'funfair' dot pattern while preserving the extended lighting coverage provided by multiple LEDs.
Solution Approach 2:
The patent applies different optical properties to different regions of the light exit surface. By creating diffusing regions and non-diffusing regions with different light transmission characteristics, the system can locally control light distribution to eliminate unwanted dot patterns in certain areas while maintaining beam definition in other areas.
2Adaptability or versatility
If multiple effect functions are combined in light fixtures, then the visual effect versatility is improved, but the device complexity and processing requirements worsen
Solution Approach 1:
The control system is segmented into multiple independent effect function modules, each handling a specific visual effect (e.g., color cycling, intensity modulation, pattern generation). This modular architecture allows multiple effects to be combined without requiring a single complex processing unit, distributing the computational load and simplifying the overall system design.
Solution Approach 2:
Multiple effect functions are implemented using periodic control patterns that can be synchronized through a master clock signal. This approach allows complex visual effects to be generated by combining simple periodic modulations of light parameters, reducing the processing complexity compared to generating each effect independently.
3Adaptability or versatility
If multiple effect functions are activated simultaneously, then the visual effect versatility is improved, but the ease of operation worsens due to difficulty in creating pleasing combinations
Solution Approach 1:
The system pre-establishes compatibility rules and synchronization protocols for combining multiple effect functions. By preparing these combination rules in advance (e.g., which effects can be safely combined, their relative timing relationships), the system enables users to activate multiple effects simultaneously without needing to manually coordinate complex parameters, greatly simplifying operation.
Solution Approach 2:
The control system incorporates feedback mechanisms that monitor the combined output of multiple effect functions and automatically adjust parameters to maintain visually pleasing results. This feedback control allows the system to self-correct suboptimal effect combinations, reducing the burden on users to have expert knowledge of effect coordination.
4Object-affected harmful factors
If diffusing regions are added to eliminate the 'funfair' look, then the visual appearance is improved, but the device complexity increases due to additional components
Solution Approach 1:
The diffusing function is merged with the existing light exit structure by integrating the diffuser element into the housing or lens assembly. This combination approach eliminates the need for separate, additional components while achieving the desired light diffusion effect, thereby minimizing the increase in device complexity.
Solution Approach 2:
The diffuser element is designed to serve multiple functions simultaneously: it eliminates the 'funfair' dot pattern, controls light distribution patterns, and can be integrated with color mixing optics. This multi-functionality reduces the need for separate components for each function, offsetting the complexity addition with functional consolidation.
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 eliminates the 'funfair' look by providing a uniform light output and simplifies the creation of complex light effects, reducing processing demands and making it easier for users to generate visually appealing effects without extensive programming knowledge.
Implementation Method 1
a diffuser cover (213) arranged above the PCB (207), wherein the diffuser cover comprises at least one diffuser region (215)
Implementation Method 2
a number of light collecting means (109) arranged in the head housing (111) and adapted to collect light from the light sources and convert the collected light into a number of source light beams (113)
Data Source
Figure 1a
Figure 1b
Figure 1c
AI summary
The present invention relates to an illumination device comprising a number of light sources arranged in a first group and in a second and controlling means adapted to control the first group and said second group individually. The controlling means is further adapted to control of light sources based on an input signal indicative of at least a first effect function and a second effect function. The first effect function generates a first output related to the light sources and said second effect function generates a second output light sources. The first and second effect functions are stored in a memory in the in the illumination device. The that controlling means is adapted to control the first and the second group of light sources based on a priority schema and/or synchronizing schema both stored in a me mort in the illumination device. The priority schema comprising a number of priority rules defining how the first effect function and the second effect must be executed in relation to each other, and the synchronizing schema comprises a number of synchronizing functions defining how the controlling means must execute the first effect function and the second effect function in relation to time and in relation to each other. The present invention relates also to a method of controlling such illumination device.