Light Leaf 採光リダイレクトルーバー by Leijing Zhou is a highly esteemed winner of the very prestigious 2026 A' Design Award 銅賞 in 建築資材・建設部品デザイン Competition Category.
銅建設部品· 2026
Light Leaf 採光リダイレクトルーバー
by Leijing Zhou
Client: Zhejiang University
A' Design Award 銅賞 Winner in 建設部品 Category
Verified Award Winner
Verify Award Status for #181573The Design
About Light Leaf 採光リダイレクトルーバー
LightLeafは、自然光が限られた住宅のための採光リダイレクトルーバーシステムです。従来のブラインドスラットに代わり、周囲の自然光を捉えて室内の奥深くまで反射させる可動式の導光ブレードを採用しています。ブレードは高反射率の上面と拡散性の下面仕上げを組み合わせ、グレアを抑制します。ピボットヒンジと位置固定機構を備えた軽量アルミフレームにより、より多くの採光が必要な際にはユニットを外側へ押し出すことができます。本システムはモジュール式製造に対応し、既存の窓枠への非侵襲的な設置が可能です。
The Recognition
About the A' Design Award 銅賞
Light Leaf 採光リダイレクトルーバーは、創造性、独創性、鋭い洞察力で際立つ傑出したデザインに授与される、高い権威をもつ評価である A' Design Award 銅賞の受賞作品です。銅賞の受賞作品は、十分に巧みで印象的なほど創造的な工芸品であり、デザイナーの豊富な経験、想像力、機知を裏づけています。Light Leaf 採光リダイレクトルーバーは、高く評価され、称賛され、愛される品であり、顕著にプロフェッショナルで革新的であることが期待されます。この A' Design Award 銅賞を受賞したデザインは、芸術・科学・デザイン・技術のベストプラクティスを取り入れており、細部への配慮に優れています。Light Leaf 採光リダイレクトルーバーは、ニーズを見事に満たし、欲求に触れ、感情を魅了し、好奇心を引きつけます。
Behind the Design
Press Kit
Credits, team members and technical details provided by the designer.
- Unique Properties
- LightLeaf is a daylight-redirecting louver system for living spaces with insufficient natural light. By replacing conventional blind slats with adjustable light-guiding blades, it captures ambient daylight and redirects it deeper indoors, creating soft, even illumination without daytime electricity. Designed for low-floor, north-facing, or compact residences, LightLeaf improves visual comfort and spatial quality while balancing privacy, safety, and energy efficiency.
- Dimensions & Packaging
- 900mm x 80mm x 1350mm
- Tags
- Daylight redirecting system, Light-guiding louvers, Passive daylighting, Energy-efficient housing, Urban living solutions, Non-invasive installation, Sustainable architecture, Indoor environmental quality
- Production Technology
- LightLeaf integrates a lightweight aluminum frame with pivot hinges, position locks, and adjustable louver assemblies. The dual-surface louvers combine a high-reflectance upper coating with a diffusive lower finish to enable controlled daylight redirection. The system is engineered for modular fabrication and non-invasive installation on existing window frames. Its design development referenced passive daylighting principles, facade engineering strategies, and basic optical reflection modeling to optimize light distribution efficiency and glare control.
- Design Challenge
- The main challenge was converting a conventional shading device into an effective daylighting system without adding complexity. It required balancing light redirection, glare control, privacy, and structural stability within existing window constraints. Building regulations and wind resistance were key external factors. The solution focused on simplifying the mechanism while maintaining performance and safety.
- Research
- This project is based on applied design research addressing insufficient daylight in residential spaces. The goal was to redesign a familiar window element to improve indoor light quality without electricity. Field observations of low-floor and north-facing homes were combined with simple daylight behavior studies and visual simulations. Results showed that redirecting light upward reduces glare and increases brightness deeper inside, improving comfort and energy efficiency through minimal structural intervention.
- Inspiration
- This project was inspired by the widespread issue of underlit living spaces, especially low-floor, north-facing, or obstructed residences. Observations of residents relying on temporary reflective panels and daytime artificial lighting revealed the need for a more effective and integrated solution. Drawing from passive daylighting principles, LightLeaf reimagines conventional blinds as a light-guiding system to improve indoor environmental quality without additional energy use.
- Project Duration
- The project commenced in October 2025 and was completed in January 2026.
- Operation Flow
- LightLeaf functions like a regular blind in daily use, allowing users to adjust the slats for shading and privacy. When more daylight is needed, the lock is released and the unit is gently pushed outward. By rotating the blades, incoming light is reflected upward and distributed deeper into the room. This simple transformation redirects natural light more evenly, reducing glare near the window while brightening darker areas indoors.
- Team Members
- Keyin Chen
Leijing Zhou
Qikai Tang
Yi Zhou
Rui Yao
Menghan Li
Yijun Zhao
Bingjing Fang
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