Light Leaf Ram Pengarah Semula Cahaya Siang by Leijing Zhou

Light Leaf Ram Pengarah Semula Cahaya Siang by Leijing Zhou is a highly esteemed winner of the very prestigious 2026 A' Design Award Gangsa in Reka Bentuk Bahan Binaan dan Komponen Pembinaan Competition Category.

GangsaKomponen Bangunan· 2026

Light Leaf Ram Pengarah Semula Cahaya Siang

by Leijing Zhou

Client: Zhejiang University

A' Design Award Gangsa Winner in Komponen Bangunan Category

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Verified Award Winner

Verify Award Status for #181573

View at A' Design Award Press Release Award Badge

Colors

The Design

About Light Leaf Ram Pengarah Semula Cahaya Siang

LightLeaf ialah sistem ram pengarah semula cahaya siang untuk kediaman yang mempunyai cahaya semula jadi yang terhad. Bilah bidai konvensional digantikan dengan bilah pemandu cahaya boleh laras yang menangkap cahaya siang ambien dan memantulkannya lebih jauh ke dalam bilik. Bilah-bilah ini menggabungkan permukaan atas berpantulan tinggi dengan kemasan bawah yang meresap untuk mengawal silau. Rangka aluminium ringan dengan engsel pangsi dan pengunci kedudukan membolehkan unit ini ditolak keluar apabila lebih banyak cahaya siang diperlukan. Sistem ini menyokong fabrikasi modular dan pemasangan tanpa invasif pada bingkai tingkap sedia ada.

The Recognition

About the A' Design Award Gangsa

Light Leaf Ram Pengarah Semula Cahaya Siang ialah pemenang A' Design Award Gangsa, pengiktirafan yang amat berprestij yang dianugerahkan kepada reka bentuk cemerlang yang dicirikan oleh kreativiti, kecerdikan dan ketajaman fikiran. Pemenang Gangsa ialah artifak yang amat mahir dan sangat kreatif yang membuktikan pengalaman luas, imaginasi dan akal budi pereka bentuknya. Light Leaf Ram Pengarah Semula Cahaya Siang diharapkan menjadi objek yang sangat dihargai, dikagumi dan disayangi, sangat profesional dan inovatif. Reka bentuk pemenang A' Design Award Gangsa ini merangkumi amalan terbaik dalam seni, sains, reka bentuk dan teknologi, dan cemerlang dalam perhatiannya terhadap butiran. Light Leaf Ram Pengarah Semula Cahaya Siang memenuhi keperluan dengan indah, menyentuh keinginan, memikat perasaan dan menarik rasa ingin tahu.

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