S
S/A
S/B
S/C
S/D
S/E
A
SYMMETRICAL OPTICS FOR SERIES OF LUMINAIRES WITH DOUBLE LIGHT EMISSION
ASYMMETRIC OPTICS
With this classification PERFORMANCE iN LIGHTING identifies the light
emission typology of the luminaires inside those series that contain models
with direct, indirect and / or combined light emission.
Name of symmetrical optics for luminaires with double light emission
Type of optic
Acronyms
Typology of light emission
Direct symmetrical light
Mainly symmetrical direct light
Evenly direct - indirect symmetrical light
Mainly symmetrical indirect light
Indirect symmetrical light
PERFORMANCE iN LIGHTING asymmetric optics generally have asymmetric
light distribution on plane α with a point of maximum concentration.
The axis passing through the point of maximum concentration and the point
marked by the axis of the lamp is called the Imax axis.
The light distribution on plane β, on the other hand, may be symmetric or
asymmetric.
An asymmetric optic may be symmetric in relation to one plane only.
EXAMPLE
Asymmetric optic code: Ayy/xx
where:
A = Asymmetric
yy = numeric value of the Imax angle.
The Imax angle is the angle between axis A and the lmax axis.
xx = the abbreviated name of the opening angle
For example: Ayy/I – Ayy/M – Ayy/W – Ayy/EW.
By convention, the beam opening of plane α is considered.
For example:
A30/M = Asymmetric axis with Imax 30° and Medium opening
A45/I = Asymmetric axis with Imax 45° and Intensive opening
In the presence of multiple asymmetric optics with the same lmax value
and same beam opening range, it will be necessary to distinguish them by
adding the numeric value of the beam opening at the end.
For example: A45/M25 - A45/M40
Asymmetric optic name
Mandatory
indications
Additional
indications
Type of optic
Imax angle
Type of opening
Opening angle
plane a
Numeric value of
the Imax angle
I
0° ÷ 20°
M
21° ÷ 45°
W
46° ÷ 75°
EW
over 75°
XXXI
A |
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