Airlock Lighting Device for Facial Illumination
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Solution Overview
Problem
Current security gate lighting technologies require large space for light sources to prevent reflections and hotspots, making them incompatible with the modest size needed for security gates, and traditional light sources obscure the view of security teams through transparent walls.
Innovation Solution
The security gate incorporates transparent lighting windows with integrated light sources that emit light beams at optimized angles (30° to 60°) using diffusing paint and prisms to illuminate the face effectively, allowing for efficient illumination without protrusions and maintaining transparency for monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If large surface light sources are used to prevent reflections and hotspots, then illumination quality is improved, but space requirement increases making security gate too large
Solution Approach 1:
The patent transitions from traditional large-surface light sources to thin-film light-emitting structures integrated into the transparent window. By changing the dimensional approach from volumetric light sources to planar thin-film emitters, the system achieves adequate illumination without increasing the overall gate volume, resolving the contradiction between illumination quality and compact size.
Solution Approach 2:
Instead of using large uniform light sources, the patent implements localized light extraction zones with specific optical properties at precise locations on the transparent window. This allows concentrated illumination at critical areas (face region) while maintaining transparency elsewhere, achieving high illumination quality without requiring large light source surfaces.
2Loss of information
If transparent walls are used to enable monitoring, then visibility is improved, but illumination capability deteriorates
Solution Approach 1:
The patent combines the transparent window serving dual functions: as a viewing surface for monitoring and as an integrated light-emitting surface for facial illumination. The thin-film light-emitting structure is deposited directly on the transparent window, merging the transparency function and illumination function into a single integrated component, eliminating the trade-off between visibility and illumination capability.
Solution Approach 2:
The transparent window is designed to perform multiple functions simultaneously: it serves as a transparent barrier for security monitoring, as a light-emitting surface for facial illumination, and as a structural component of the security gate. This multi-functionality resolves the contradiction by making the same component responsible for both visibility and illumination.
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 solution provides optimal facial illumination for facial recognition systems while maintaining a compact security gate design and ensuring clear visibility for security teams, enhancing both functionality and aesthetics.
Implementation Method 1
a light source intended to illuminate said edge and to generate light beams propagating in the thickness of the lighting window
Implementation Method 2
the first zone comprising means for modifying the rules of reflection of the light beams on said external face so that they are reflected towards said internal face
Implementation Method 3
the means of the second zone consist of prisms... intended to transmit the light beams towards the face of the individual... forming an angle suited to the geometry of said security gate
Data Source
AI summary
A security gate has two walls defining between them a passage through which an individual passes, for each wall, a transparent lighting window extending over at least part of the wall, for at least one of the edges of the lighting window, a light source intended to light the edge and to generate light beams that propagate through the thickness of the lighting window, and for each lighting window, at least one extraction zone provided on the lighting window and intended to transmit the light beams towards the face of the individual passing through the passage, the light beams thus transmitted forming, with respect to the plane of the lighting window from which they emanate, an angle adapted to the geometry of the security gate so as to optimize the lighting of the individual.