About


Beyond creating visually captivating and functional lighting, ambiguous is a lighting studio based in Singapore that is guided by ecocentric values. We specialise in integrating solutions that enhance the natural environment through thoughtful lighting design.
Behind The Name
In design, specification and simplification are means of making things easier to use and understand, but they can also create division and bias. Our philosophy is that in ambiguity we find flexibility, diversity, and depth – especially in a material like light.
The richness of life lies in ambiguity.
Our Services
- Architectural & Landscape Lighting Design
- Master Planning & Lighting Strategy
- Product Development
- Cross-disciplinary Design & Consultation
- Light & Environment Research
Our Approach
Optimise Energy Use

Minimise Impact

Accelerate Circularity

Holistic Wellness

The Founder

Founder & Principal Designer
Yusuke is a Tokyo-born lighting designer with a background in architectural engineering and environmental psychology. After working as an Associate Director at Lighting Planners Associate for 17 years, he founded his own studio 'ambiguous'.
In 2019, he was recognised as one of the 40 Under 40 designers by the LIT Lighting Design Awards. Known for his meticulous approach, Yusuke works on both private residences and urban plans, seamlessly blending form and function. He enhances the visual and emotional experience of spaces through his innovative lighting techniques and design expertise.
Member
International Association of Lighting Designers (IALD)
International Dark-Sky Association (IDA)
The Architecture Institute of Japan (AlJ)
Lecturer
National University of Singapore, Department of Architecture (DOA)
National University of Singapore, Division of Industrial Design (DID)
Singapore University of Technology and Design, Architecture and Sustainable Design (ASD)
Singapore University of Social Sciences, Master of Gerontology
Thailand, Bangkok, Chulalongkorn University, Faculty of Architecture
Japan, Tokyo, Keio University, Department of System Design Engineering
Awards
2024
LIT Lighting Design Awards, winner of Light Art Project category for Through The Looking Prism
2023
[d]arc awards, top 5 of Low Budget category for Corrugated House
2022
IES Illumination Awards, Award of Merit for St James Power Station
2021
[d]arc awards, winner of Best Landscape Lighting Scheme for Magical Shores at Siloso
2020
[d]arc awards, 2nd place for High Budget category for Jewel Changi Airport
Dezeen Awards, longlisted in Architectural Lighting Design Category for Jewel Changi Airport
(IES) Illumination Award, Award of Excellence for Jewel Changi Airport
2019
40 under 40, Lighting Design
2017
IES Illumination Awards, Award of Merit for CapitaGreen
IES Illumination Awards, Award of Merit for The Sanya EDITION
2015
IES Illumination Awards, Award of Merit for Victoria Theatre & Concert Hall
IES Illumination Awards, Award of Merit for D'Leedon
2014
IES Illumination Awards, Award of Merit for PARKROYAL COLLECTION Pickering
2013
IES Illumination Awards, Award of Distinction for Gardens by the Bay, Bay South
2010
IES Illumination Awards, Award of Merit for ION Orchard
IES Illumination Awards, Award of Merit for Tang Plaza Façade Enhancement
IES Illumination Awards, Award of Merit for Alila Villas Uluwatu
2007
IES Illumination Awards, Award of Excellence for Omotesando akarium