Curved Light Concentrator for Building Window Light Guidance
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Solution Overview
Problem
Existing building installation devices fail to efficiently guide light from the outside environment into buildings while minimizing the wall area required, often resulting in reduced light intensity and increased moisture ingress.
Innovation Solution
A light-guiding building installation device featuring a light guide element with a reflective light concentrator that focuses light from the outside entry surface to an internal exit surface, utilizing a curved or parabolic design to enhance light transmission efficiency and incorporating weatherproof and translucent elements for moisture prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional windows are used to supply light into the interior space, then light transmission is achieved, but the wall area required is large and light intensity is reduced
Solution Approach 1:
The light-guiding element employs curved surfaces, specifically a parabolic or curved light concentrator, to focus and redirect light rays. This curvature enables efficient light concentration from a larger entry surface to a smaller exit surface, achieving high light intensity while minimizing the required wall area for installation.
2Productivity
If the light-guiding element penetrates the roof structure completely, then light guidance efficiency is improved, but moisture ingress risk increases
Solution Approach 1:
The light-guiding element is sealed with a waterproof membrane or coating that prevents moisture ingress while maintaining light transmission. This flexible sealing layer covers the penetration points and surfaces of the light-guiding element, creating a barrier against moisture while allowing the element to maintain its light-guiding function.
3Use of energy by moving object
If a reflective light concentrator is added to the light-guiding element, then light transmission efficiency is enhanced, but device complexity increases
Solution Approach 1:
The light concentrator utilizes a parabolic or curved reflective surface that passively focuses light rays through its geometric shape alone, without requiring active control mechanisms or complex optical components. This geometric approach enhances light transmission efficiency while keeping the device structure relatively simple and manufacturable.
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 achieves a higher light intensity at the exit surface compared to conventional windows, while maintaining a smaller wall area and preventing moisture ingress, thus providing efficient and effective lighting with improved thermal and sound insulation.
Implementation Method 1
the light concentrator is made of a reflective material... the light concentrator has a reflectance of at least 80%, at least 85%, at least 90%, or at least 95%, particularly for visible light
Implementation Method 2
the light concentrator, viewed in cross-section, is at least partially parabolic and/or curved with a varying curvature, namely in such a way that it bundles or concentrates the light incident on it
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a light-guiding building installation device (3), in particular for a building window installation device (1), for an arrangement on the building that at least partially penetrates a wall and/or roof structure (5) and/or a roof covering (6). It is provided that the building installation device (3) has at least one light-guiding element (12) which has a light-transmitting light entry surface (13) arranged on the outside of the building installation device (3), a light-transmitting light exit surface (14) arranged on the inside, and at least one reflective and curved and/or bent light concentrator (16) which reflects light incident through the light entry surface (13) in the direction of the light exit surface (14), so that the reflected light exits the building installation device (3) at least partially through the light exit surface (14) in the direction away from the light entry surface (13).The invention further relates to a building window device (1).