G.E.C. DIRECTIONAL LANTERNS
"Watford", "Lewisham" and "Tunbridge Wells" Types.
These lanterns, specifically designed to suit the OSIRA lamp, give a special distribution whic hhas been recognised
as a new step in street lighting practice, and of great value to motor traffic. The candle-power is reduced where it
faces the oncoming driver. The result is remarkably shadow-free lighting and a minimum of glare.
Arrangement Of Units
A mounting height of at least 25 feet is desirable is good results are to be obtained. The special distribution
allows a certain flexibility in spacing compared with former lanterns, and although the diversity of illumination
(foot-candles) will be greater at the longer spaces, the road brightness observed by a driver will be uch less
Road Appearance And Visibility
When schemes for lighting a section of highway are under consideration it has been found desirable to install
a reasonable number of OSIRA lamps if the full benefits of the system are to be appreciated, as the chief feature
of highway lighting by OSIRA lamps and G.E.C. lanterns is the remarkable visibility over long distances and the
even brightness along a stretch of roadway.
G.E.C. Street Lighting Specialists are at the disposal of all Lighting Authorities and engineers to make suggestions,
prepare schemes, and give advice in connection with the installation of OSIRA lamps for Public Lighting.
G.E.C. Engineers are available to advise and assist in every way possible to ensure that every installation
of OSIRA lamps gives complete satisfaction both when switched on and throughout life.
A MAIN STREET AT ROMFORD, ESSEX, MADE SAFE FOR TRAFFIC BY
OSIRA LAMPS AND G.E.C. LANTERNS. PART OF AN INSTALLATION
OF OVER 400 SMALLER UNITS.
THE SAME STREET BEFORE OSIRA ELECTRIC DISCHARGE LAMPS