Illumination Apparatus with Asymmetric Cover for Omni-Directional Light
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Solution Overview
Problem
Conventional LED lamps are not suitable for achieving an omni-directional light pattern, which is required in some applications.
Innovation Solution
The illumination apparatus features a cover with a first portion and a second portion, where the first portion has a greater average thickness and lower transmittance than the second portion, and both portions contain diffuser particles, allowing for an omni-directional light distribution through a combination of thickness differences and reflective coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional LED lamps are used, then the structure is simple and manufacturing is easy, but they cannot achieve an omni-directional light pattern
Solution Approach 1:
The cover is designed with different portions having different optical properties. The first portion has greater thickness and lower transmittance, while the second portion has lesser thickness and higher transmittance. This local differentiation of optical characteristics enables the cover to achieve omni-directional light distribution while maintaining a relatively simple overall structure.
Solution Approach 2:
The cover employs asymmetric design where the first portion and second portion have different thicknesses and transmittances. This asymmetry is deliberately introduced to control light distribution in different directions, enabling omni-directional illumination pattern without requiring complex multi-component structures.
2Adaptability or versatility
If the first portion of the cover has greater thickness, then light scattering and reflection increase to achieve omni-directional pattern, but light transmittance decreases
Solution Approach 1:
Different portions of the cover are assigned different thickness values to balance light scattering and transmittance. The first portion with greater thickness provides enhanced scattering for omni-directional distribution, while the second portion with lesser thickness maintains higher transmittance to preserve overall light output efficiency.
Solution Approach 2:
The thickness parameter of the cover is varied across different portions rather than being uniform. By changing the thickness parameter locally, the design achieves optimal balance between light scattering (for omni-directional pattern) and light transmittance (for energy efficiency).
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 achieves an omni-directional light pattern by ensuring that more than 90% of the light is reflected or scattered in a range from -135° to 135°, effectively addressing the limitations of conventional LED lamps.
Implementation Method 1
both portions contain diffuser particles, allowing for an omni-directional light distribution
Implementation Method 2
allowing for an omni-directional light distribution through a combination of thickness differences and reflective coatings
Data Source
AI summary
This disclosure discloses an illumination apparatus. The illumination apparatus comprises a cover comprising a second portion and a first portion, and a light source disposed within the cover. An average thickness of the first portion is greater than that of the second portion.