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PhotoSynergy Ltd (PSL)

PSL is a Scottish company based in St Andrews, Fife - a spin off from the University of St Andrews. PSL has innovation at its core with a team of experienced physicists and engineers whose extensive background and experience has been gained in the research and development of leading edge technology and product creation.

LIGHTPATH- Fibre Illumination System for Challenging Subsea Environments

PSL's most recent development is LIGHTPATH, a patented fibre illumination system

  • The concept is based on side-emitting optical fibre 
  • Creating a continuous and flexible line of light
  • The fibre is 5mm in diameter and typically 75m in length
  • The Lightpath fibre carries no electrical power only light

This unique concept creating a continuous line of light primarily at or near the human eye peak sensitivity results in a non-intrusive background light until it is required in the dark.

Innovation - The PSL approach is to innovate in light related systems covering a wide range of applications including subsea, marine, aquaculture, algae growth and communications through to industrial and domestic lighting systems for way finding and escape routes in difficult or hazardous and challenging conditions.

Applications - Cover the spectrum from domestic lighting to the extremes of challenging, hazardous and subsea environments. The systems can be left in a 24/7 ‘always on’ state with battery back-up if mains should fail and targeted 5 years use. Alternatively the system can be modulated to highlight emergency state or that the system is on battery stand-by operation.


PhotoSynergy received the Subsea UK Innovation for Safety Award in 2014 for its significant contribution to safety