Lighting Device Segmented Light Guiding Panel Glare Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lighting devices struggle to ensure task productivity while reducing glare, as structures with a light emitting surface orthogonal to the light incident end surface and prism sheets or cylindrical light guiding members fail to provide sufficient illuminance and wide-range illumination.
Innovation Solution
A lighting device with a light guiding panel that directs light from a source through a light incident end surface, featuring both a first light emitting part for focused illumination and a second light emitting part for wide-range illumination, reducing glare and enhancing productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a light emitting surface is positioned substantially orthogonal to the light incident end surface with a prism sheet, then the light guiding structure is simplified, but task productivity cannot be ensured while glare is reduced
Solution Approach 1:
The light emitting surface is divided into two distinct parts: a first light emitting part at the opposite end from the light incident end surface, and a second light emitting part on a main surface intersecting with the light incident end surface. This segmentation allows different regions to serve different functions - one for focused illumination and another for wide-range illumination - thereby resolving the contradiction between structural simplicity and task productivity enhancement while reducing glare.
Solution Approach 2:
Different portions of the light guiding panel are given different light emission characteristics. The first light emitting part provides focused illumination for specific task areas, while the second light emitting part provides diffuse wide-range illumination for general workspace lighting. This local differentiation of light emission quality enables the system to simultaneously achieve high task productivity through focused light and glare reduction through diffuse light, without requiring complex additional optical components.
2Illumination intensity
If a cylindrical light guiding member emits light from the tip and peripheral surface, then the light distribution is improved, but glare reduction and task productivity enhancement are insufficient
Solution Approach 1:
The light emitting surface is divided into two distinct parts: a first light emitting part at the opposite end from the light incident end surface, and a second light emitting part on a main surface intersecting with the light incident end surface. This segmentation allows different regions to serve different functions - one for focused illumination and another for wide-range illumination - thereby resolving the contradiction between structural simplicity and task productivity enhancement while reducing glare.
Solution Approach 2:
Different portions of the light guiding panel are given different light emission characteristics. The first light emitting part provides focused illumination for specific task areas, while the second light emitting part provides diffuse wide-range illumination for general workspace lighting. This local differentiation of light emission quality enables the system to simultaneously achieve high task productivity through focused light and glare reduction through diffuse light, without requiring complex additional optical components.
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 device ensures task productivity by providing sufficient illuminance and reducing glare through the combination of focused and wide-range lighting, alleviating directivity issues and multi-shadow phenomena.
Implementation Method 1
a light guiding panel (2) that guides the light emitted from the light source (1)
Data Source
AI summary
A lighting device that can ensure task productivity while reducing the glare is provided herein. The lighting device has a light source; and a light guiding part including a light guiding panel and configured to guide light that is emitted from the light source. The light guiding panel includes: a light incident end surface that is situated facing the light source, the light incident end surface being a surface on which the light emitted from the light source is incident; a first light emitting part that is included in an opposite end from the light incident end surface, and that emits the light guided inside the light guiding panel; and a second light emitting part that is included in a predetermined main surface of the light guiding panel that intersects with the light incident end surface, and that emits the light guided inside the light guiding panel.