Rectilinear Lens for Even Elevator Ceiling Illumination
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Solution Overview
Problem
Elevator interior illumination assemblies using LED lamps often result in circular illumination images due to circular or square face plates and lenses, leading to dark areas in corners, which do not provide an even rectilinear lighting effect.
Innovation Solution
The elevator interior illumination assembly features a housing with LEDs, a reflector, and a rectilinear lens configuration that directs light into an evenly distributed rectilinear light emission image, using a housing with extruded material, side channels, and a front face plate to secure the lens and reflector, ensuring even illumination across rectangular or square ceiling panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If circular or square face plates and lenses are used in LED illumination assemblies, then the structural simplicity and ease of manufacture are improved, but the illumination uniformity deteriorates due to dark areas in corners
Solution Approach 1:
The patent applies local quality by using a rectilinear lens with varying optical properties across its surface. The lens is configured with different refractive indices or surface curvatures in different regions to redirect light specifically into corner areas, creating locally optimized illumination that eliminates dark spots while maintaining overall rectilinear geometry
Solution Approach 2:
The patent introduces a new dimensional approach by using a rectilinear lens geometry instead of traditional circular lenses. This dimensional change from circular to rectilinear form factor allows light to be distributed uniformly across rectangular or square ceiling panels, eliminating the corner dark areas that occur with circular optics
2Illumination intensity
If rectilinear lens configuration is used to achieve even illumination, then the illumination uniformity is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single rectilinear lens component. The lens simultaneously performs light redirection, corner illumination, and rectilinear image formation that would otherwise require separate optical elements. This consolidation achieves uniform illumination without proportionally increasing device complexity
Solution Approach 2:
The patent utilizes parameter changes in the lens design, specifically varying the refractive index and surface curvature parameters across different regions of the rectilinear lens. These parameter variations enable the lens to redirect light into corner areas while maintaining a relatively simple overall structure
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 configuration provides a consistent, evenly distributed rectilinear illumination image, eliminating dark corners and improving the aesthetic and functional lighting in elevator ceilings, while allowing for easy installation and efficient heat dissipation.
Implementation Method 1
LED lamps as light sources
Implementation Method 2
reflector and lens are configured to direct light emitted by the LED
Implementation Method 3
rectilinear lens carried by the housing. The reflector and lens are configured to direct light emitted by the LED into an evenly-distributed rectilinear light emission image across the lens
Data Source
AI summary
An elevator interior illumination assembly for providing a rectilinear source of illumination in an elevator ceiling panel. An LED, reflector, and a rectilinear lens are carried by the housing, and the reflector and lens are configured to direct light emitted by the LED into an evenly-distributed rectilinear light emission image across the lens.