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 250 Watt SON-T lamps but since then, other wattages have appeared; from 70 Watt-150 Watt SON / CDM, and more recently with various CPO-TW 'Cosmopolis' Lamps as a result of Derby's Street Lighting PFI. Both side-entry and post-top examples are used. The related "Mini" Iridium can also be seen in Derbyshire; click here for details.
This Iridium running a 45 Watt 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 Royce Thompson SC1000 is employed here.
West Drive in Mickleover saw the installation of Iridiums running 60 Watt CPO-TW lamps in 2006; eleven years later, the Iridiums were changed to OrangeTEK AriaLED lanterns.
'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 35 Watt SOX lanterns on sleeved concrete columns. These Iridiums, whilst quite 'modern' for 2003, were considered outdated by 2021, and were replaced with D.W. Windsor Kirium Pro Mini LED lanterns in the August of that year.
Onslow Road at night.
Cosmopolis Iridiums have also been trialled in the wider County of Derbyshire - this 140 Watt example is in Grassmoor.
Back in Derby City Centre, and this Iridium is on St Alkmund's 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.
Owing to a significant height restriction, the column supporting this Iridium beneath a railway bridge on Derby's Old Nottingham Road is no more than about 3 m in height.
For all of you out there who have ambitions to repair street lights one day, the amount of bird muck that is encrusted on this lantern's canopy may make you have a rethink!
For many pictures of Iridiums installed under the Derby Street Lighting PFI, click here.
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