Rotatable Optical Lighting Module for Uniform Gas-Discharge Replacement
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Solution Overview
Problem
Gas-discharge lamps, such as High Pressure Sodium (HPS) arc lamps, are costly due to high power consumption and limited lifetime, and their replacement with LED lamps faces challenges in matching light distribution and compatibility with existing luminaires, leading to poor and uneven light distribution.
Innovation Solution
A lighting module with a central body carrying multiple light sources and a rotatable optical element that adjusts light distribution to mimic the radial omnidirectionality of gas-discharge lamps, allowing for direct replacement without modifying the luminaire, using a base that fits existing sockets and includes a heat sink for thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED lamps are used to replace gas-discharge lamps, then energy efficiency and lifetime are improved, but light distribution uniformity deteriorates
Solution Approach 1:
The lighting module segments the light source into multiple LED units arranged around the longitudinal axis, with each LED having its own optical element. This segmentation allows independent optimization of light distribution from each unit, collectively achieving uniform omnidirectional illumination while maintaining LED energy efficiency.
Solution Approach 2:
Optical elements (lenses or reflectors) are introduced as intermediaries between the LED light sources and the surrounding space. These optical elements shape and redirect the light from each LED to achieve the desired radial omnidirectional distribution, resolving the mismatch between LED directional emission and required uniform illumination.
2Adaptability or versatility
If LED lamps are designed to mimic gas-discharge lamp shape, then compatibility with existing luminaires is improved, but light distribution matching deteriorates
Solution Approach 1:
The optical elements are made rotatable about the longitudinal axis, introducing dynamic adjustability to the otherwise static lighting module. This allows the light distribution pattern to be optimized for different luminaire configurations while maintaining the elongated cylindrical shape for mechanical compatibility.
Solution Approach 2:
The lighting module design with rotatable optical elements provides multi-functionality: it can be installed in various existing luminaire types (providing mechanical compatibility) while the rotatable optical elements allow optimization for different mounting orientations and reflector configurations (providing light distribution adaptability).
3Temperature
If heat sink dimensions are increased to dissipate LED heat, then thermal management is improved, but light source diameter increases
Solution Approach 1:
The heat sink is designed as an elongated cylindrical structure extending along the longitudinal axis rather than expanding radially. This dimensional reorientation allows sufficient heat dissipation surface area while maintaining a compact radial profile that fits within existing luminaire constraints.
Solution Approach 2:
The heat sink employs a cylindrical (curved) geometry with radial fins or surfaces that efficiently dissipate heat through increased surface area in a compact form factor. The curved cylindrical shape allows optimal heat radiation and convection patterns while constraining the overall diameter.
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 provides an energy-efficient and long-lasting LED lighting solution that matches the light distribution of traditional gas-discharge lamps, ensuring compatibility and improved light uniformity in existing luminaires through adjustable optical elements.
Implementation Method 1
a heat sink for dissipating heat from the light sources
Implementation Method 2
a heat sink for dissipating heat from the light sources
Implementation Method 3
an optical element rotatable about the longitudinal axis in relation to the central body
Implementation Method 4
including at least one optical portion having an optical property, such that the optical portion is configured to affect light emitted from at least one of the light sources
Implementation Method 5
including at least one optical portion having an optical property, such that the optical portion is configured to affect light emitted from at least one of the light sources
Implementation Method 6
a first light source and a second light source... LED (Light Emitting Diode) configurations
Implementation Method 7
LED (Light Emitting Diode) configurations have been proposed
Data Source
AI summary
A lighting module (1) for connecting to a luminaire, the lighting module extending along a longitudinal axis (LA) and comprising: a base (3) for connecting the lighting module (1) to a socket (11) of the luminaire (10); a central body (4) carrying at least a first light source (21) and a second light source (22), wherein the first light source (21) is configured to emit first light having a first light distribution with a first main direction pointing away from the longitudinal axis (LA), and the second light source (22) is configured to emit second light having a second light distribution with a second main direction pointing away from the longitudinal axis (LA), the first and second main directions being different from one another; and an optical element (6) including at least one optical portion (61) and a cover portion (62) extending all around the central body (4) and said optical element (6) being rotatable about the longitudinal axis (LA) in relation to the central body (4), the at least one optical portion (61) having an optical property, such that the optical portion (61) is configured to affect light emitted from at least one of the light sources, the at least one optical portion (61) extends in an angular area around the longitudinal axis (LA), and the cover portion (62) is configured not to affect light emitted from the remaining sources.