Planar Lighting Device with Segmented Light Sources
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Solution Overview
Problem
Existing lighting devices face complexity and difficulty in achieving optimal lighting settings for a natural appearance of illuminated objects due to cumbersome light shaping mechanisms and dependency on ceiling reflective properties.
Innovation Solution
A lighting device with a planar light transmissive carrier between the light emission window and reflector, featuring a grid of first and second light sources with adjustable emission orientations, allowing for independent control and easy adjustment of accent and diffuse lighting, and a reflector with variable reflective properties to optimize light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If light shaping means are used to shape light source light, then shaped light can be provided, but the lighting device becomes complex and cumbersome
Solution Approach 1:
The light source array is segmented into multiple independently controllable light sources arranged in a grid pattern on the planar carrier. Each light source can be controlled individually or in groups, allowing complex lighting effects to be achieved through simple individual elements rather than complex shaping mechanisms.
Solution Approach 2:
The planar light transmissive carrier serves multiple functions: it supports the light source array, acts as a light guide to distribute light from sources to the light emission window, and provides a structured mounting surface. This multi-functionality eliminates the need for separate light shaping components.
2Illumination intensity
If ceiling reflective properties are used for diffuse lighting, then ambient light can be provided, but light shaping becomes complex and cumbersome
Solution Approach 1:
A reflector is introduced as an intermediary element between the light sources and the ceiling. The reflector captures light from the light sources and redirects it toward the ceiling in a controlled manner, enabling diffuse ambient lighting without relying on the ceiling's inherent reflective properties. This allows independent control of accent and diffuse lighting components.
3Illumination intensity
If light sources are arranged to provide both accent light and diffuse light, then natural appearance can be achieved, but optimizing lighting settings becomes difficult
Solution Approach 1:
The lighting device incorporates dynamic control capabilities where each light source or group of light sources can be independently adjusted in terms of intensity and timing. This dynamic control allows flexible optimization of lighting settings to achieve natural appearance by balancing accent and diffuse light components according to specific application requirements.
Solution Approach 2:
The system enables easy adjustment of lighting parameters such as intensity, duration, and spatial distribution of light from different sources. By changing these parameters independently for each light source or group, optimal lighting settings for natural appearance can be readily attained without complex mechanical adjustments.
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
Enables simple and effective shaping of light, reducing light losses and enhancing the natural appearance of objects with adjustable and tunable lighting settings, suitable for office and shop lighting.
Implementation Method 1
a reflector, and each second light source has a respective second emission orientation to issue light towards the reflector, which light, after reflection, is redirected substantially into a respective first direction
Data Source
AI summary
A lighting device comprising a housing with a light emission window and, opposite thereto, a reflector. A planar light transmissive carrier arranged in between the light emission window and the reflector and comprising, at least on a side facing towards the reflector, a grid of a plurality of light sources. The plurality of light sources comprise a first group of first light sources and a second group of second light sources. Each first light source has a respective first emission orientation in a respective first direction away from the reflector and each second light source has a respective second emission orientation to issue light towards the reflector, which light, after reflection, is redirected into a respective first direction. The lighting device is able to provide accent lighting and/or diffuse lighting issued by light sources arranged on one planar carrier.