Specifications
Design-in guide Philips Fortimo LED Line High Voltage System 37
LED Line Cover 2ft Soft-diffuse
Nominal
Tolerance
Weight incl. end-caps [g]
103
Screws
M4 Metric/
M4 Taptite
Length ≥ 4 mm
Screw torque
It is advisable to apply a torque of
50% of the maximum torque that
is allowed for the appled screw
type in combination with the
applied material and material
thickness.
Designed to fit in plate thickness [mm]
0.6 minimum
1.2 maximum
Color of end-caps
White, RAL 9010
Protection foil
The diffuser is provided with a
protective plastic foil, which has
to be removed before
installation.
Lighting characteristics
Light distribution
Light distribution diagram LED line with diffuser
Light distribution diagram ‘real-time’ luminaire design
with four LED lines
When the diffuser is in use the light from the LEDs will be redistributed uniformly
over its surface, at the expense of some efficiency loss, resulting in lower luminous
flux (see table). Ultimately, however, the performance is dependent on the total
optical system and the way in which the luminaire shapes and directs the light beams.
If necessary Philips can provide support by estimating the effect of using the diffuser in
your luminaire design.
With a well-designed new luminaire the light distribution diagram may be almost
identical to the light distribution diagram in the reference luminaire test set-up. An
example of such a diagram of a new real-time luminaire design-in is shown on the left.
Optical
properties 0 hrs*
Without diffuser
With diffuser
Uniformity* [%]
Pixelated
Typical < 1% modulation*
Luminous flux [lm]
100%
Fortimo 85%
* Modulation: describes the variation of the luminance along the axis of the LED Line cover soft-
diffuse. Reference is the average luminance between two adjacent LEDs in the LED Line.
Lifetime of LED Lines in combination with the diffuser
Mounting a diffuser over the LED Line modules will probably have an impact on the
Tc. The delta Tc is < 5 °C. Maximum temperature for the diffuser is 75 °C.
The luminaire manufacturer will measure Tc with the diffuser installed. If Tc is still
within specifications, the lifetime claim of the LED Line is still applicable.
165° 165° 150°150°
135°
120°
105°
90°
135°
120°
105°
90°
C180 C270 C0 C90
0°75° 75°60°60° 45° 45°30° 30°15° 15°
50
100
150
200
250
cd / 1000 lm
90°
75°
60°
45°
90°
75°
60°
45°
0° 105°105° 120° 120°
500
300
200
100
C180 C270 C0 C9 0
0°30° 15° 30°15°
400
cd / 1000 lm