Linear LED Lens with Side Wings for Glare Reduction
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Solution Overview
Problem
Linear fluorescent tube lighting systems fail to provide satisfactory lighting at ground level and are inefficient in electrical energy consumption, with individual optical systems for LEDs increasing manufacturing costs and causing glare issues.
Innovation Solution
A linear LED lighting device with an elongated body and cover forming a linear lens, featuring a convex central part and parallel lateral wings to diffuse light and reduce glare, allowing for efficient light concentration and distribution without the need for individual diode lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If individual optical systems (secondary lenses) are associated with each diode to ensure quality ground lighting from great height, then lighting quality is improved, but manufacturing cost greatly increases
Solution Approach 1:
The patent merges multiple individual optical functions into a single collective optical system. Instead of placing separate secondary lenses on each LED, the invention uses one linear lens that serves all LEDs simultaneously, consolidating the optical components while maintaining effective light distribution from great mounting heights
Solution Approach 2:
The linear lens performs multiple optical functions that would otherwise require separate components. It simultaneously focuses light from multiple LEDs, distributes illumination across the ground, and maintains beam control, making a single component that replaces what would traditionally require multiple individual lenses
2Illumination intensity
If individual optical systems are used for each diode to achieve desired ground lighting, then lighting control is improved, but device complexity greatly increases
Solution Approach 1:
The patent combines multiple individual optical systems into a single integrated linear lens structure. This consolidation reduces the number of optical components from multiple per-LED lenses to one collective lens, thereby simplifying the overall device complexity while preserving lighting control functionality
3Illumination intensity
If diode lenses are used to concentrate light for ground lighting, then lighting efficiency is improved, but glare perception increases because the lens is visible as a discrete point of light
Solution Approach 1:
The patent transitions from point-source diode lenses to an extended linear lens structure. By stretching the optical function across a linear dimension rather than concentrating it at discrete points, the light source appears as a continuous line rather than separate points, reducing the glare effect while maintaining light concentration efficiency
4Area of stationary object
If fluorescent tubes emit light over their entire periphery from great height, then coverage area is improved, but lighting intensity at ground level becomes insufficient
Solution Approach 1:
The patent applies local quality by directing light more intensely in specific directions rather than uniform peripheral emission. The linear lens focuses and channels light from the LED array into controlled beams that reach ground level with sufficient intensity, creating localized high-intensity zones where needed rather than diffuse low-intensity coverage
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 effective lighting that meets standards for industrial and commercial spaces while reducing manufacturing costs and minimizing glare, offering a wider and more intense perceived light source without dazzling observers.
Implementation Method 1
the central part makes it possible to obtain a concentration of light capable of producing lighting that complies with the standards in force
Implementation Method 2
the presence of the side wings... makes it possible to substantially attenuate the glare of an observer by increasing the width of the 'perceived light source'... the lateral wings form light guides which... diffuse the light having undergone one or more reflections inside the cover
Data Source
Figure 1~3
Figure 4
AI summary
The invention relates to a linear LED lighting device comprising a linear lens (21), at least translucent, with a longitudinal axis parallel to the longitudinal axis (L) of the body (2), having an external light-emitting face (22) and an internal light-receiving face (23) from the LEDs (5), of which — the emitting face (22), viewed in cross-section, has a central portion (24) of generally convex and protruding shape bordered by two flat lateral portions, each edge of the central portion forming with the corresponding flat portion an angle, measured outside the linear lens, less than or equal to 95°, and — the receiving face (23), viewed in cross-section, comprises: — a central region (30) at least partially concave situated opposite the central region of the emitting face to form a cavity for receiving the LEDs,two flat lateral parts substantially parallel to the flat lateral parts of the emitting face to form two lateral wings (32) for diffusing light which border the linear lens (21), each edge of the central region forming with the corresponding flat part an angle, measured inside the linear lens, greater than or equal to 100° and preferably greater than 110°.