The illustrations below show different Diamond Optic
settings with notes on typical applications. Fine tuning and performance
prediction should be computed using I-tables provided by DW Windsor.
NB. The luminaire is positioned so that the aim of
the lampholder is on the roadside.
5/35
The 5° reflectors light the near side pavement,
the 35° light wide distances across from the unit. Rule of thumb:
Use if the width to be lit from the luminaire to the farthest point
across from it is 1.5 x the mounting height or more.
5/25
The 5° reflectors light the near side pavement,
the 25° light not so wide distances across from the unit. Rule
of thumb: Use if the width to be lit from the luminaire to the farthest
point across from it is 1.5 x the mounting height or less.
10/10
As both reflector pairs are pulled in to 10° a
near symmetrical lozenge shaped illuminance patch is created. This
is a useful setting for central positioning in shopping arcades
or for lighting narrow footpaths, across wide open parks and for
some car park situations.
10/15
The 10° reflectors provide more light for a wider
pavement. The 15° reflectors will light roads at increased spacings.
Rule of thumb: Use if width to be lit from luminaire to farthest
point is less than the mounting height.
10/25
Rule of Thumb: As the 5/25 but for use where the near
side pavement is extra wide behind the luminaire, typically about
0.5 x mounting height or more. (NB. 15/35 is also useful in this
type of application).
5/20
Rule of thumb: As the 5/25 but for use where the overall
road width is 1 x the mounting height or less. This setting will
improve the overall uniformity in these cases.
31/35
Here all reflector elements are pulled in as far as
they will go. Useful for lighting open spaces such as car parks
or pedestrianised squares. Rule of thumb: Space to height ratios
for the following uniformities are:
