Rotatable Light Conditioning Elements for Compact Multi-Mode LED Devices
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Solution Overview
Problem
Existing LED-based lighting devices that emit different types of light are limited in size due to the larger reflectors and lenses required for each individual LED, making them bulkier than necessary.
Innovation Solution
A multiple mode light emitting device with a plurality of first and second LEDs arranged in concentric rings, where a rotatable portion with light conditioning elements (reflector cups or lenses) is positioned to condition light from either the first or second LEDs based on their operational state, allowing for efficient switching between different light types without the need for multiple sets of larger reflectors and lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple sets of reflectors and lenses are provided for different LED types, then different types of light can be emitted, but the device size increases
Solution Approach 1:
The patent combines multiple light conditioning elements (reflector and lens) into a single integrated component that can condition light for different LED types. This merging eliminates the need for separate reflector and lens assemblies for each LED type, thereby reducing overall device size while maintaining the capability to emit different types of light.
Solution Approach 2:
The patent employs a rotatable light conditioning element that can be rotated to different positions to align with different LEDs. This dynamic positioning allows a single light conditioning element to serve multiple functions, enabling the device to emit different types of light without requiring multiple static light conditioning assemblies, thus reducing device size.
2Illumination intensity
If individual reflectors and lenses are used for each LED, then light conditioning is optimized, but the overall device becomes bulkier
Solution Approach 1:
The patent designs a universal light conditioning element that can effectively condition light for multiple different LED types through rotation. This single multi-functional component replaces what would traditionally require multiple specialized components, thereby reducing the device footprint while maintaining optimized light conditioning performance for each LED type.
Solution Approach 2:
The rotatable mechanism allows the light conditioning element to dynamically reposition itself to optimize light conditioning for the currently active LED type. This dynamic adaptation ensures high-quality light conditioning is achieved for each LED type without requiring separate dedicated components for each, thus reducing the overall device area.
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 enables a compact lighting device that can emit different types of light efficiently by rotating the light conditioning elements to align with either the first or second LEDs, reducing overall device size while maintaining versatility in light output.
Implementation Method 1
The light conditioning elements may be reflector cups
Implementation Method 2
or may be lenses
Data Source
AI summary
Methods and systems of emitting different light from a multiple mode light emitting device are disclosed. An exemplary embodiment has a LED portion with a plurality of first LEDs and a plurality of second LEDs arranged in a first ring centered about a central axis, and a rotatable portion with a plurality of light conditioning elements arranged in a second ring centered about the central axis. The plurality of first LEDs emit and the plurality of second LEDs emit different types of light. Each light conditioning element receives and conditions light from one of the plurality of first LEDs when the light conditioning element is in a first position. Each light conditioning element receives and conditions light from one of the plurality of second LEDs when the light conditioning element is in a second position. The light conditioning elements may be reflector cups or may be lens.