Technical Services


At Designplan we are proud to have our own in-house photometry which enables us to rapidly prototype new and bespoke luminaires. We were the first luminaire manufacturer in the UK to use a near field imaging goniophotometer, which is unlike the arm and mirror structure of traditional systems.

A major advantage of our approach is that by using an array of imaging CCDs to convert the near-field luminance (Cd/m2) of the luminaire to a far-field luminous intensity (Cd) distribution, it produces absolute lumen values. This means our customers know the actual luminous flux emitted by the luminaire and do not have to convert a relative value against a notional output from the light source. From this data we produce our polar curves and standard photometric files in EULUMDAT format. IES files can also be supplied by special request.

Photometric files can be found on each product page. For more information please call our technical sales team by phone on 020 8254 2022 or by email.

Our testing laboratory

Product testing is a vital element in the design of our luminaires. We continuously upgrade and improve our test laboratory. Our constant investment helps us to innovate our lighting solutions both in terms of performance and environmental impact. Our in-house testing facilities include:

  • Impact resistance (IK rating)
  • Ingress protection (IP rating) – Now enhanced
  • Product life – New and improved
  • High temperature – New and improved
  • Accelerated corrosion
  • Photometric (see above)

We also have selected products independently tested. This ensures we attain all relevant and essential accreditation for extreme environments and the specialised sectors we supply.