Multi-mode Illumination Device with Movable Light Collecting Means
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Solution Overview
Problem
Existing LED-based lighting systems face challenges in achieving high lumen output with high color rendering index (CRI) and compact design due to Etendue limitations, leading to inefficient power consumption and limited color accuracy, especially in projecting systems where multiple light sources are required but result in large and complex fixtures.
Innovation Solution
The illumination device incorporates two groups of light sources, with movable light collecting means that can switch between positions to selectively use either group, allowing for a high number of light sources without exceeding Etendue limits, enabling high lumen output and high CRI while maintaining a compact design by only using a subset of light sources at a time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light sources are integrated into a single fixture to increase lumen output, then the illumination intensity is improved, but the device complexity and size increase
Solution Approach 1:
The patent divides the light sources into two separate groups (first group and second group) that can be selectively activated. This segmentation allows the system to achieve high lumen output by activating both groups while maintaining manageable complexity through modular organization and shared optical components.
Solution Approach 2:
The optical system is designed with universal components that serve multiple functions: the same optical axis and collecting means are used for both light source groups, enabling the fixture to achieve high illumination output while reducing overall complexity through shared infrastructure.
2Illumination intensity
If multiple light sources are integrated into a single fixture to increase lumen output, then the illumination intensity is improved, but the fixture size increases
Solution Approach 1:
The patent merges both light source groups into a single fixture by sharing common optical components and alignment infrastructure. The optical axis serves both groups, and the collecting means is positioned to receive light from either group, enabling high lumen output in a compact configuration.
Solution Approach 2:
The patent positions light sources in different spatial arrangements (first position and second position) that can be selectively activated. This dimensional flexibility allows the system to achieve high illumination output while maintaining compact fixture size by activating only the necessary light sources for each application.
3Productivity
If light sources are positioned to maintain proper alignment with collecting means, then the optical efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent incorporates alignment features that are pre-configured during manufacturing, such as alignment marks and precision mounting structures. This preliminary action ensures that when the light sources are positioned and activated, proper alignment with the collecting means is achieved without requiring complex post-manufacturing adjustment.
4Illumination intensity
If Etendue limits are exceeded by integrating more light sources, then the lumen output is improved, but the power efficiency decreases
Solution Approach 1:
The patent enables selective activation of light source groups based on the specific application requirements. This partial action approach allows the system to achieve high lumen output when needed by activating both groups, while improving power efficiency by activating only the necessary group(s) for each application, avoiding excessive energy consumption.
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 enables a multi-colored LED lighting product with high lumen output and high CRI, improving power efficiency and reducing the size and complexity of fixtures, while allowing for seamless switching between color modes and maintaining proper alignment of light sources and collecting means.
Implementation Method 1
a number of light collecting means (107) adapted to collect the generated light and to convert the collected light into a number of light beams (109, 111) that propagate along an optical axis (113)
Data Source
AI summary
The present invention relates to an illumination device comprising a number of light sources generating light and a number of light collecting means adapted to collect the generated light and to convert the collected light into a number of light beams that propagate along an optical axis. The light sources are arranged in a first group and second group of light sources which are individually controllable. The light collecting means and light sources are displaceable in relation to each other between a first position where the light collecting means collect light from the first group of light sources and convert the collected light into a number of first light beams, and a second position where the light collecting means collect light from the second group of light sources and convert the collected light from the second group of light sources into number of second light beams.