$2.15m · Other round · Deeptech · Edinburgh, UK
Edinburgh-based Singular Photonics has closed an oversubscribed $2.15m funding round led by ACF Investors, with Wren Capital, Cambridge Angels, Scottish Enterprise, Quantum Exponential and Old College Capital participating. The University of Edinburgh spinout said the capital will expand its engineering capacity and accelerate a new generation of single-photon image sensors for machine vision, industrial automation, scientific instruments and medical imaging.
The company also said it had already doubled its full-year 2025 sales during 2026 and was approaching break-even. Those figures are company-reported, but they make the purpose of the round unusually concrete: Singular is funding a broader product roadmap in response to customer demand, rather than financing science without a route into instruments.
Moving computation into the sensor
Conventional image sensors capture light intensity and pass large volumes of data elsewhere for processing. Singular's single-photon avalanche diode, or SPAD, sensors detect and time individual photons, while digital processing built into the sensor performs functions such as photon counting and histogramming close to the point of detection. The company says that architecture reduces data transfer, latency and power use while allowing imaging systems to extract information that standard cameras cannot capture.
That matters commercially because Singular sells enabling components rather than complete end-user machines. A sensor that handles more computation internally can help an instrument maker build a smaller or faster product without designing the whole imaging stack from scratch. The approach also lets Singular address several markets from a shared semiconductor platform, although each application still needs its own engineering, validation and route to volume.
The clearest evidence of that model is Singular's collaboration with Renishaw. Renishaw integrated Singular's 512-pixel Sirona sensor into a time-resolved Raman spectroscopy module for its inVia microscope. The system separates weak Raman signals from fluorescence that can otherwise overwhelm them, enabling measurements of samples that were previously difficult or impossible for the instrument.
Customer feedback sets the next tape-out
Semiconductor product cycles make prioritisation consequential: a new sensor design requires engineering work and a manufacturing tape-out before customers can evaluate it. Singular says its growing customer base is now shaping the features it will bring to market, so the round is effectively buying time and capacity to turn those requests into reusable sensor products.
The addition of former Arm CTO Dipesh Patel to the board gives the company experienced semiconductor leadership as it makes those choices. The next commercial test is whether customer-led designs can become repeatable products across more than one instrumentation market, without fragmenting the roadmap into bespoke projects.
