Wall-Wash Lighting Fixture With Segmented Reflector
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Solution Overview
Problem
Existing wall-wash lighting fixtures have limitations in space efficiency and angular coverage, making them less versatile for applications such as corner illumination.
Innovation Solution
A wall-wash lighting fixture design featuring a solid-state light source with a frustoconical structure and a reflector that includes a kicker portion, allowing light to be directed at a non-parallel angle, with a reduced footprint and increased angular span for broader illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional wall-wash lighting fixture uses a standard reflector design, then the fixture structure is simple, but the angular coverage is limited and cannot effectively illuminate corners
Solution Approach 1:
The reflector is divided into two distinct portions: a first portion that reflects light at a first angle and a second portion (kicker portion) that reflects light at a second angle. This segmentation allows the reflector to provide multiple illumination angles simultaneously, enabling effective corner illumination while maintaining a relatively simple overall structure.
Solution Approach 2:
The reflector portions are arranged at different angular orientations in three-dimensional space. The first reflector portion is oriented to reflect light at a first angle, while the second reflector portion is oriented to reflect light at a second angle, creating multi-dimensional light distribution that enhances angular coverage without significantly increasing the fixture's footprint.
2Adaptability or versatility
If the lighting fixture uses a larger size to increase angular span, then illumination coverage improves, but the occupied space increases
Solution Approach 1:
The fixture achieves extended angular span by utilizing three-dimensional angular orientation of reflector portions rather than increasing the two-dimensional footprint. The reflector portions are positioned and oriented to create a wide angular distribution of light while the fixture itself remains compact, effectively decoupling illumination coverage from fixture size.
3Adaptability or versatility
If the light emitting surface has a longer length dimension, then the fixture can provide broader illumination, but the fixture occupies more space
Solution Approach 1:
The fixture achieves broader illumination by utilizing angular orientation of reflector portions in three-dimensional space rather than extending the light emitting surface length. The reflector portions are positioned at different angles to distribute light widely while maintaining a compact footprint, effectively decoupling illumination breadth from fixture dimensions.
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 design enhances space efficiency and versatility, enabling effective illumination of walls and corners with reduced occupied space, allowing for broader application in lighting fixtures.
Implementation Method 1
The solid-state light source can include a light emitting surface configured to emit light
Implementation Method 2
The reflector can be coupled to the frustoconical structure such that light exiting the frustoconical structure is reflected at a non-parallel angle relative to a vertical direction
Data Source
AI summary
A wall-wash lighting fixture is provided. The wall-wash lighting fixture includes a solid-state light source having a light emitting surface configured to emit light. The light emitting surface is a long dimension of the light emitting surface. The wall-wash lighting fixture further includes a frustoconical structure. The solid-state light source is positioned to emit light into the frustoconical structure. The wall-wash lighting fixture includes a reflector coupled to the frustoconical structure such that light exiting frustoconical structure is reflected at a non-parallel angle relative to a vertical axis associated with the wall-wash lighting fixture. The reflector defines an opening.