Strip Lamp Anti-Glare Lens Refraction Design
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Solution Overview
Problem
LED strip lamps face challenges in achieving uniform illumination over large areas due to light scattering and glare issues, which are exacerbated by the need for anti-glare covers that reduce light output efficiency.
Innovation Solution
A strip lamp design featuring two rows of light sources with intersecting optical axes and strategically positioned lenses that refract blocked light to cross the light source mounting seat edges, reducing glare and improving light distribution while maintaining efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If anti-glare cover is installed close to the light source, then glare is reduced, but light output efficiency decreases
Solution Approach 1:
The patent introduces a reflective surface as an intermediary element between the light source and the anti-glare cover. This reflective surface redirects blocked light back toward the illumination area, converting the harmful effect of light blocking into a useful contribution to overall light output, thereby resolving the contradiction between glare reduction and light efficiency
Solution Approach 2:
The patent converts the harmful effect of light being blocked by the anti-glare cover into a beneficial effect by using the reflective surface to redirect this blocked light back into the illumination area. The light that would otherwise be wasted is now reused, transforming a negative aspect into a positive contribution to light output efficiency
2Area of stationary object
If light sources are arranged obliquely to achieve uniform illumination, then large-area coverage is improved, but light scattering increases
Solution Approach 1:
The patent divides the illumination system into multiple light sources arranged in rows, with each source contributing to different portions of the illuminated area. This segmentation allows the system to cover large areas while maintaining uniformity through the coordinated optical design of individual sources and their corresponding lenses
Solution Approach 2:
The patent employs lenses with specific optical parameters to control light distribution from obliquely arranged light sources. By carefully selecting and designing lens parameters, the system achieves uniform illumination across large areas despite the oblique arrangement of light sources
3Loss of energy
If light sources are staggered with depressions in covers, then light blocking on opposite sides is avoided, but device complexity increases
Solution Approach 1:
The patent merges the light source mounting seat with the anti-glare cover into an integrated structure. The cover is positioned to extend from the light source mounting seat, combining multiple functions into a single component and reducing overall device complexity while still preventing light blocking
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 improved anti-glare effects and enhanced light output efficiency by minimizing light blocking and optimizing light distribution, achieving more uniform illumination over larger areas.
Implementation Method 1
parts of the light emission surface of the lenses disposed on a first and second side, respectively, of the center line and away from the illuminated surface causes the otherwise blocked light of the light sources on the first and second side, respectively, of the center line to be refracted and then to cross the top edge of the light source mounting seat on the opposite second or first side, respectively, of the center line
Data Source
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Figure 3
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AI summary
The invention discloses a strip lamp comprising a strip lamp holder, provided with two light source mounting seat oppositely arranged and located on both sides of the center line; two rows of light sources, respectively arranged on the two light source mounting seats, and the light emission directions are all toward the illuminated surface and the two optical axes intersect at or near the center line; two lenses, respectively arranged on a light source mounting seat and located in the light emission direction of the corresponding light source, and both include a light entrance surface and a light emission surface. The shielding of the light source mounting seats on the opposite side of the light source reduces glare, on the one hand, the setting of the light shield is reduced and the light output efficiency is improved. On the other hand, it also has a better anti-glare effect.