Local WRTL Stela Square Lanterns
The following pictures are arranged in order of LED quantity, with the smallest quantity (10 LED) appearing first.
These 10 LED lanterns (complete with optics designed for narrow areas) can be found on a footpath that passes through Eureka Park in Swadlincote.
The lanterns are fitted to 5 m mid-hinged columns, in order to facilitate future maintenance without the need for an access platform.
The lanterns are fitted with miniature photocells; the width of the lantern prevents them from being visible from ground level.
These 10 LED lanterns can be found on a footpath in Willington. These appear to be fitted with the "standard" optic. Also just about visible immediately above the column spigot is a one-part NEMA photocell. This is a part-night cell and ensures that the lantern extinguishes from midnight until 5:30 am.
The same development is also home to these 14 LED versions fitted to 6 m columns.
These roadway lanterns operate all-night, and are switched using Royce Thompson Oasis 2000 photocells that are calibrated to activate the lanterns when ambient light levels fall below 35 Lux, and deactivate once ambient levels rise above 18 Lux.
An identical setup exists at this new housing development in Stenson Fields; however, in this instance, the column was so new at the time of photographing that it was still to be painted in its top coat of "Derbyshire Green" paint (or RAL 6006, as the colour is more commonly known!).
Although the panel containing the LEDs has a slight curve, the top of the lantern is completely flat, creating a perfect right angle between it and the column.
This small housing development in Swadlincote was one of the first in the County to be designed using LED lanterns. These 18 LED lanterns are fitted to 5 m columns; at the time that the design was produced, the LEDs were not bright enough to allow column heights to exceed this height, and most "normal" width roads could not be lit to the required levels without using this LED configuration or even the larger 36 / 52 LED versions (when using the Stela, anyway). LED technology is now evolving at such an extraordinary rate that lantern manufacturers are regularly having to supply updated photometric data far more frequently than they ever needed to in the past, in an attempt to keep up, with the result that, had this scheme been designed even six months later, the likelihood is that a lower LED configuration could have been used, whilst obtaining the same or better light levels than those obtained with the configuration seen here.
These also feature the standard optic lens.
The final column on the road is surrounded by a portion of currently undeveloped land (a future second phase of the site) - the green fence hides this from public view.
Again, these lanterns are controlled with miniature photocells.
These 18 LED lanterns can be found on a footpath in Long Eaton.
The following photographs were all taken of the three 18 LED Stelas installed in Memorial Square, Hayfield in 2010 - the first LED lanterns to be used on public roads in Derbyshire. The first Stela is installed on a 5 m column located adjacent the entrance to the Royal Hotel. This replaced a Thorn Beta 5 35 W SOX side entry lantern.
The other two Stelas installed on this scheme were fitted to 6 m columns. These both replaced older 6 m columns that had been retrofitted with WRTL Arc 70 W SON lanterns (the original lanterns would have run 90 W SOX lamps).
The third lantern was situated at the Bank Street junction.
An 18 LED Stela entered my collection in October 2010 - click here to see pictures of it.
BACK TO LOCAL POST-TOPS PAGE
BACK TO LOCAL LANTERNS PAGE
BACK TO INDEX PAGE
CLICK HERE TO MAKE A MONETARY DONATION
© 2002 - English Street Lights Online