Design Challenge
Fixtures needed to be discreetly integrated into the bridge steel structure
Required dual-mode support: static white light (3000K–4000K) and dynamic RGBW effects
Uniform light blending was essential to avoid colour separation or patchiness
Precision optical distribution required for long-range visibility from the riverbanks
All installation had to meet Japan’s strict waterproofing, seismic, and structural regulations
Product Solution
Custom-designed RGBW linear fixtures
Switchable CCT operation modes (3000K / 4000K) for daily static lighting
Full DMX protocol compatibility to enable festive dynamic lighting sequences
Light diffusion through blended light guides and frosted covers for seamless RGBW mixing
High-precision horizontal beam distribution set to 60° for long-span applications
Weather-resistant extruded aluminium and stainless-steel housing with anodised finish
IP67-rated waterproof protection with UV resistance, anti-corrosion, and seismic compliance
Modular driver and wiring infrastructure located in a centralised control room within the bridge for easy maintenance
2020 Tokyo Olympics Kamage Bridge
Custom
2020
Japan
Tokyo
This project was commissioned by the Tokyo Metropolitan Government as part of its urban bridge renovation programme prior to the 2020 Olympics. The bridge spans a key vehicular and pedestrian artery along the Sumida River—an area bustling with daily commuters and night-time tourists alike. The lighting design had to simultaneously enhance visibility, architectural clarity, and the overall cityscape.
2020 Tokyo Olympics Kamage Bridge
Tokyo
Product
Applications