Dual-Module Lighting Apparatus for Glare Reduction
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Solution Overview
Problem
Middle and older aged individuals require higher brightness for visual tasks and experience glare due to age-related changes in the visual system, such as reduced crystalline lens transmittance and intraocular scattering, which existing lighting solutions do not adequately address.
Innovation Solution
A lighting apparatus with a first light source module having a smaller half beam angle and higher correlated color temperature than a second light source module, where the first module primarily illuminates the task region and the second module illuminates the ambient region, reducing glare and maintaining high color saturation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high color temperature light is used to increase blue light components, then transmittance of crystalline lens is improved, but intraocular scattering increases causing glare
Solution Approach 1:
The lighting apparatus divides the illumination into two distinct segments: a first light source module emitting high color temperature light (5400K-7000K) with narrow beam angle for task illumination, and a second light source module emitting low color temperature light (2000K-5000K) with wide beam angle for ambient illumination. This segmentation allows each module to perform its specialized function without causing harmful effects.
Solution Approach 2:
Different regions of the illuminated space are provided with different light qualities: the task region receives high color temperature, narrow-beam light optimized for visual acuity and color saturation, while the ambient region receives low color temperature, wide-beam light optimized for reducing intraocular scattering and glare. This local differentiation resolves the contradiction by applying the appropriate light quality to each specific area.
2Illumination intensity
If high brightness is provided for visual tasks, then visual performance is improved, but glare perception increases
Solution Approach 1:
The illumination system is segmented into a focused task illumination component (first light source module with narrow half beam angle) and a diffuse ambient illumination component (second light source module with wide half beam angle). This segmentation enables high task illuminance without proportional increase in perceived glare, as the ambient light acts as a buffer.
Solution Approach 2:
High illuminance is locally applied only to the task region where visual performance is needed, while the ambient region maintains lower illuminance with wide-angle diffusion. This local quality differentiation ensures high brightness where needed without causing overwhelming glare in the overall visual environment.
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 high illuminance with reduced glare and improved color appearance for middle and older aged individuals by optimizing light distribution and color temperature, enhancing readability and vividness of objects.
Implementation Method 1
a first light source module (41) having a smaller half beam angle and a higher correlated color temperature than a second light source module (42)
Implementation Method 2
a second light source module (42) surrounding the first light source module (41), wherein a half beam angle of the first light source module (41) is smaller than a half beam angle of the second light source module (42)
Data Source
AI summary
A lighting apparatus is provided. The lighting apparatus includes a first light source module and a second light source module surrounding the first light source module. A half beam angle of the first light source module is smaller than a half beam angle of the second light source module. A correlated color temperature of light from the first light source module is higher than a correlated color temperature of light from the second light source module.