Local Philips 'Iridium' SGS 252/3/4s.

The Iridium first appeared here in 2002 when a length of St Alkmund's Way was refurbished as part of the 'Connecting Derby' scheme. These used 250w SON-T lamps but since then, other wattages have appeared; from 70w-150w SON and CDM and more recently with 45w and 60w CPO-TW 'Cosmopolis' Lamps as a result of Derby's street lighting PFI. Both side-entry and post-top examples are used.

This Iridium running a 45w CPO-TW lamp has been retrofitted to a DW Windsor 'Oxford' heritage column on a footpath in Markeaton Park - previously a somewhat vandalised DW Windsor 'Windsor' lantern had been fitted - this was more in-keeping with the style of the column! A blue-cone Monostar 1000 is employed here - the blue being a way of date-coding the cell.

West Drive in Mickleover saw the installation of Iridiums running 60w CPO-TW lamps in 2006.

'Cosmo' Iridiums are being installed in Mackworth Village as well now - these columns originally supported Thorn Beta 2s. An article regarding the previous lanterns (and the previous lanterns to them!) can be read here.

These post-top CDM-TT Iridiums were used to relight Onslow Rd in Mickleover in early 2003. The previous lighting consisted of various 35w SOX lanterns on sleeved concrete columns.

Onslow Road at night.

Cosmopolis Iridiums are also being trialled in the wider county of Derbyshire - this 140w example is in Grassmoor.

This Iridium is on St Alkmunds Way - just beside the bridge supporting the A6.

This installation is just around the corner from the previous one however a longer bracket is employed due to the wide pavement below.

© 2002-2008 Mike Barford