Indirect Lighting Fixture Single Side Light Glare Reduction
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Solution Overview
Problem
Current indirect lighting fixtures suffer from low light efficiency, glare, and durability issues due to inefficient reflective designs and concentrated light sources, leading to unsatisfactory lighting experiences.
Innovation Solution
The design irradiates a single-sided strip light source onto a plastic material with high reflection and diffuse reflection characteristics, converting the light into a surface light source, thereby reducing glare and increasing light output angle, and using a structured reflector and shading panel to prevent direct light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a concentrated point or strip light source is used in direct lighting fixtures, then the brightness and light intensity are improved, but glare is increased and human comfort is reduced
Solution Approach 1:
The patent transforms the light source from a concentrated point or strip (1D/0D) to a distributed surface light source (2D) by irradiating light onto the inner surface of the exterior component. This dimensional change distributes the light intensity across a larger area, reducing glare while maintaining overall brightness
Solution Approach 2:
The exterior component's inner surface acts as an intermediary between the light source and the external environment. By applying reflective coating to this intermediary surface, the light is redistributed across a larger area, converting concentrated light into diffuse light that reduces glare
2Object-affected harmful factors
If a diffuser plate, grille or fog cover is added to block light and reduce glare, then glare is reduced, but light efficiency is decreased due to light loss
Solution Approach 1:
The patent removes traditional light-blocking components (diffuser plates, grilles, fog covers) from the optical path. Instead, it uses the exterior component's own surface as the light distribution medium, eliminating the need for separate glare-reducing components that cause light loss
Solution Approach 2:
The exterior component serves multiple functions: it provides structural protection, defines the fixture's aesthetic appearance, and acts as the light distribution surface through its reflective coating. This multi-functionality eliminates the need for additional dedicated glare-reducing components
3Ease of operation
If side-emitting lighting fixtures use a multi-layer structure with light guide plate and reflector plate, then light guidance is improved, but light efficiency loss increases and durability decreases
Solution Approach 1:
The patent merges the light guidance function and light distribution function into a single integrated structure. The exterior component's inner surface with reflective coating performs both guidance and distribution, eliminating the need for separate light guide plates and reflector plates that cause light loss and durability issues
4Illumination intensity
If reflective coating is sprayed on the inner surface of exterior components, then light reflection is achieved, but reflection efficiency is low and optical structure is not optimized
Solution Approach 1:
The patent optimizes the reflective coating parameters (material composition, layer thickness, surface roughness) to maximize reflection efficiency. By carefully controlling these parameters, the coating achieves high reflectivity while maintaining the desired diffuse reflection characteristics for glare reduction
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 approach enhances light extraction efficiency, reduces glare, and transforms direct light into indirect light, providing a more comfortable and uniform illumination with reduced shadow intensity.
Implementation Method 1
irradiates the light of the single-sided strip light source to the surface of the plastic material with high reflection and diffuse reflection characteristics
Implementation Method 2
irradiates the light of the single-sided strip light source to the surface of the plastic material with high reflection and diffuse reflection characteristics
Data Source
AI summary
An indirect lighting fixture has a main body. An LED strip has LED chips mounted to the LED strip. The LED strip is mounted at a strip orientation plane. The reflector has a reflector channel profile which extends between a strip orientation plane and a housing orientation plane. A housing orientation plane is defined on a horizontal plane. A strip orientation plane is defined according to the LED strip. A strip orientation angle is defined between the housing orientation plane and the strip orientation plane. The strip orientation angle is between 90 and 145 degrees. It is an indirect lighting fixture designed with a single bar light source, its direct light is invisible. The light changed from the hot spot strip light to the panel light.