Select the perfect
light diffuser
possibilities
inventory
Foto IPV Delft
practical examples
1
PYRASIED
diffusers
PYRASIED Diffuser Company is specialised in plastics
that make light diffuse. Our diffuser materials offer an
optimum balance between high light transmission*
and excellent dispersion of light - without the light’s
becoming distractingly visible, of course. The quality
of our plastic diffusers is exceptional because of the
use of nanotechnologies, precision processing and
the very best additives and raw materials. These pure
nano-additives are crucial to the optimum balance
between light transmission and diffusion. With our diffusers, you get minimum light loss, maximum bespoke diffusion and colour purity.
Wide assortment
Since there are so many different applications and so
many different light sources with a very diverse range
of light spectra, angles of egress and temperatures,
we have put together a broad range of diffusers with
disparate characteristics and properties. Nearly every application comes with its own requirements and,
with our collection, we offer you the desired flexibility.
2
This documentation provides a complete overview of
in making the proper selection. On page 20, you’ll
our entire assortment of diffusers. We’ve worked on
find three frequently occurring practical examples
this enthusiastically for seven years!
with the proper solution.
To maintain an overview in our wide assortment, we
Quality and research
distinguish among:
PYRASIED Diffuser Company has its own technical light
• Standard collection (good properties, the most fa-
laboratory and test environments. We use these to
vorable price)
inspect the quality of the diffusers (light colour, dif-
• Professional collection (above-average quality,
fusion and transmission) in each batch or series of
good price)
production.
• Advanced collection (optimised diffusers with the
very best properties, the highest ‘efficiency’ and a
Recommendations
corresponding price)
Naturally, we are glad to provide you with all possible support to find the appropriate solution. Need
Differing material properties
advice? Then please feel free to contact us by telep-
The diffuser collections consist of various materials,
hone on +31 587676100 or mail us at [email protected].
namely acrylic, polycarbonate and PETG.
We can help you quickly.
These plastics have considerably differing properties, so that you can always satisfy the requirements
Sied Kooistra
demanded by a given application. The diffusers are
kept in inventory in various thicknesses, light transmissions, diffusion factors, shapes and surface types.
*At page 19 of the brochure you’ll find a summary
The decision trees on page 12 are there to assist you
and explanation of the terms used.
Which material to use?
4
Photometric properties
5
Standard collection
6
Professional collection
8
Advanced collection
10
Decision tree
12
Optical plastics
14
Light guide plates
15
Diffuser tubes
16
Round rod “Ghost”
17
Additional services
18
List of terms
19
Practical examples
20
Also good to know
22
3
Wh ich m a t e r ia l t o u s e?
The choice is simple: acrylic
We distinguish between two types of acrylic: extruded
and is not UV-resistant of itself. Thickness tolerances
Since acrylic has the best photometric properties, our
acrylic and cast acrylic. A significant advantage of
are quite small since polycarbonate is extruded.
principal is: always acrylic. Acrylic (PMMA) has an ex-
extruded acrylic is that it barely has any thickness to-
tremely high rate of light transmission and is 100% co-
lerance.
When do we use PETG?
lourless. It is stable under the influence of UV, colour-
An advantage of PETG (Vivak ®) is that fewer toxic ga-
fast, resistant to temperatures of up to 80° C, fairly rigid
So when do we advise polycarbonate?
ses are released in the event of a fire than with po-
and resistant to many chemicals. Another of acrylic’s
Polycarbonate (Makrolon ®) can be considered when
lycarbonate. At Schiphol airport, only PETG may be
advantages is that it can be produced in small quan-
you’re looking for material that is impact-resistant. Or
used. PETG is excellent for fairly low-temperature for-
tities, offering flexibility. Acrylic is durable and recycla-
when a fire classification of EN 13501 Bs1d0 is re-
mation without pre-drying. This is a huge advantage.
ble. It has a fire classification of E in accordance with
quired. In contrast to acrylic, polycarbonate can be
However, the temperature for use is also quite low:
EN13501. Acrylic burns without forming smoke.
bent when cold and can resist higher temperatures
70° C is the limit.
- up to 120° C. Polycarbonate is less rigid than acrylic
Interior applications
impact-resistant, fire
classification BS1d0
polycarbonate
PETG
minimal thickness
tolerance
structural
application
acrylic XT
polycarbonate
cast acrylic
thickness > 10mm
Decision tree for material selection
4
Exterior applications
food
PETG
airports
PETG
impact-resistant, fire
classification BS1d0
minimal thickness
tolerance
polycarbonate UVP
PETG UVP
acrylic XT
polycarbonate UVP
structural
application
cast acrylic
thickness > 10mm
P h ot ome t r ic p r o p e r ti es
When selecting the proper light diffuser, both material
more about this in the practical examples on page
properties and photometric properties are important.
20.
Graphs half-peak divergence angle
Here we speak of light transmission, diffusion and efficiency. Before presenting the various diffusers, we
Efficiency
would like to explain these concepts briefly. Page 19
The efficiency of the diffuser is the degree of light
contains a list of definitions with more technical ter-
transmission multiplied by diffusion. The greater the
minology.
number, the more efficient the diffuser. This aligns with
our objective: the greatest possible light transmission
Light transmission
and the greatest possible diffusion.
Light transmission (the degree of opacity) is the
amount of light that is measured on the side of the
Half-peak divergence angle
diffuser opposite the light source. Maximum light
What is the importance of this? With illuminated ad-
transmission is 92%. The loss of 8% is related to reflec-
vertising, we always want to have the advertisement
tion losses that light encounters upon entering and
be easily observed. This means that the half-peak di-
exiting the surfaces. These losses can be reduced by
vergence angle must be as large as possible (see
anti-reflective surface treatments.
graph 1). But with lighting, we want the light to shine
Graph 1. Large half-peak divergence angle Pyraled ® ST1
only in the precise location where we want to have
Diffusion
it - i.e., a limited half-peak divergence (see graph 2).
The most prevalent requirement for diffusion (disper-
The half-peak divergence angle is also very impor-
sion of light) is that we don’t want to see the small
tant when establishing UGR values. This is a standard
points of light created by LEDs. But this is not enough!
with which lighting must comply. Using several diffu-
The light surface must also be uniform. You can read
sers contributes to achieving the proper UGR norm.
Graph 2. Limited half-peak divergence angle Pyraled ® ST6
5
Stand a rd c o lle c t io n
Light diffusers are nothing new, of course. The classic
of these common types is also quite favourable. In
Assortment
opaline sheets are light diffusers that have been used
addition to opaline sheets, this range also includes
Table 1 provides a complete summary of the standard
since the middle of the previous century - in light
diffusers that are not made of opal, but that provide
diffusion assortment that we keep in inventory for you.
boxes, for example. The often-used (light box) opaline
limited diffusivity due to their surface structure (satin-
The assortment includes sheets of extruded acrylic
sheet has light transmission of around 30% and good
finish or matte). The primary purpose of these diffusers
(XT), cast acrylic (GS), polycarbonate and PETG. Ver-
diffusion. This is fine for classic light sources and suf-
is to avoid direct bright observation of the light source
sato ® is our own brand name for cast acrylic. Primo ®
ficient installation depth. These classic opaline sheets
and, often, to provide the light source with protection
is our brand name for extruded acrylic (XT).
will certainly remain in our assortment and we call
or to make it watertight.
them our standard diffusers. We have even added
sheets to this standard collection, namely: additional
thicknesses of opaline polycarbonate with 30% light
transmission. One advantage of these sheets is that
they are white when the light is turned off. The price
BENEFITS
• good diffusivity
• stays white when the light is off
• most favorable price
6
Luminaire of Spinlight
Luminaire of IDFRM
Table 1. Standard collection
Type number
Thickness
mm
Surface
Light transmission %
Diffusivity
Efficiency
Half-peak divergence angle
Suitable
for LEDs
Impact
resistant
UV
Fire classification
stable
EN.13501
Thickness
tolerance
Material
Primo® XT P024
2
gloss
85
low
-
about 10
no
reasonable
high
E
small
Pet-G clear satin
2
satin/satin
85
no pigment
-
10
yes
high
high
Bs1d0
0.1mm +/-
Primo XT N385
2
gloss
33
0,98
32
55
yes
reasonable
high
E
small
PC OP NU499 UV
2
gloss
32
0,91
29
54
yes
high
high
Bs1d0
0.1mm +/-
polycarbonate
Makrolon® GP 130
2
gloss
30
0,80
25
54
yes
high
no
Bs1d0
0.1mm +/-
polycarbonate
Satinglas® M51000*
3
satin/satin
89
0,26/no pigment
23
9
yes
reasonable
high
E
0.7mm +/-
cast acrylic
Primo XT 245.10000
3
satin/satin
85
<0,20/no pigment
-
-
yes
reasonable
high
E
small
Setasand M21000
3
matt/matt
84
0,34/no pigment
29
11
yes
reasonable
high
E
0.7mm +/-
cast acrylic
Setacryl® M2005
3
gloss
84
low
-
tbm
no
reasonable
high
E
0.7mm +/-
cast acrylic
Primo® XT P024
3
gloss
80
low
-
about 10
no
reasonable
high
E
small
Pet-G clear satin
3
satin/satin
78
0,20
16
10
yes
high
high
Bs1d0
0.1mm +/-
Primo XT P024 BM
3
satin/satin
78
0,40
30
20
yes
reasonable
high
E
small
Satinglas® M51100*
3
satin/satin
72
0,47
34
20
yes
reasonable
high
E
0.7mm +/-
cast acrylic
Makrolon® GP2150
3
gloss
47
0,75
35
46
yes
high
no
Bs1d0
0.1mm +/-
polycarbonate
®
Setacryl M2002
3
gloss
41
0,89
36
tbm
yes
reasonable
high
E
0.7mm +/-
cast acrylic
PC OP NU499 UV
3
gloss
33
0,96
32
53
yes
high
high
Bs1d0
0.1mm +/-
polycarbonate
Setacryl® M2006
3
gloss
32
0,87
28
tbm
yes
reasonable
high
E
0.7mm +/-
cast acrylic
Vivak® 2130 UV 30
3
gloss
30
0,88
26
54
yes
high
high
Bs1d0
0.1mm +/-
Pet-G
Primo XT N385
3
gloss
29
1,07
31
54
yes
reasonable
high
E
small
acrylic XT
Primo XT P024
4
gloss
68
0,50
34
about 10
no
reasonable
high
E
small
acrylic XT
PC OP NU499 UV
4
gloss
37
0,93
34
50
yes
high
high
Bs1d0
0.1mm +/-
polycarbonate
Setacryl® M2006
4
gloss
33
0,92
30
tbm
yes
reasonable
high
E
0.8mm +/-
cast acrylic
Primo XT N385
4
gloss
24
1,32
32
56
yes
reasonable
high
E
small
PC OP NU499 UV
5
gloss
30
0,93
28
52
yes
high
high
Bs1d0
0.1mm +/-
polycarbonate
Setacryl® M2006
5
gloss
27
0,90
24
tbm
yes
reasonable
high
E
0.9mm +/-
cast acrylic
Primo® XT N385
5
gloss
22
1,70
37
45
yes
reasonable
high
E
small
®
®
®
®
®
®
®
acrylic XT
Pet-G
acrylic XT
acrylic XT
acrylic XT
Pet-G
acrylic XT
acrylic XT
acrylic XT
*Available to 20mm thick
7
Pr ofessi o na l c o lle cti o n
Recent improvements in diffusers have been ac-
The optimisation from standard to professional lies
Assortment
celerated by the emergence of more efficient light
mainly in the composition of the additives. These na-
Type PyraLed ® RG is a pure and cost-effective me-
sources, changed societal viewpoints (sustainability
no-additives make the sheet “more efficient” - either
dium transmission sheet that is very suitable for use
and energy-saving) and technological innovations
by allowing more light to be transmitted with equiva-
in light boxes in which LEDs are placed around the
such as extremely precise process control and nano-
lent diffusivity or, indeed, with the same light transmis-
light box. The satin-finish surface on the inside ensures
technology. Professional diffusers offer more diversity
sion but achieving improved diffusivity compared to
excellent dispersion of the light: diffusivity is excellent,
than standard diffusers. The purpose of these impro-
standard diffusers. This means either increased light
as is transmission. The PyraLed ®3 has become a clas-
vements is mainly to find the right balance between
efficiency with equivalent input or equivalent light ef-
sic. This sheet is slightly bluish, as we have used a so-
transmission and diffusion. This means diffusers with
ficiency with decreased input. An efficiency advan-
called ‘brightener’. The 1113QN is a type that is often
40-60% light transmission instead of the 30% from
tage: lower investments and lower operational costs.
used in luminaires - warm white, double-sided satin-
Other great advantages of using nano-addi-
finish surface, and with a nice balance between dif-
standard diffusers.
tives are colour purity and stability.
fusion and transmission.
Professional collection
BENEFITS
• efficiency advantage
Standard collection
Materials research of Pyraled 3 by Beersnielsen
®
• colour purity
• colour stability
8
• suitable for LEDs
• for materials that have a different
structure to one side than on the
other side: the operational side is
the first-mentioned in the column
Surface.
Table 2. Professional collection
Type number
Surface
Light transmission %
Diffusivity
Efficiency
Half-peak divergence angle
Impact
resistant
UV stable
Fire classification
EN.13501
Thickness
tolerance
Material
PyraLed® N381
2
matt/satin
71
0,59
42
tbm
reasonable
high
E
small
PyraLed 1*
2
gloss/gloss
57
0,91
52
tbm
high
no
Bs1d0
0.1mm +/-
polycarbonate
PyraLed RG02
3
matt/satin
61
0,69
42
tbm
high
no
Bs1d0
0.1mm +/-
polycarbonate
Setaled® M17000
3
gloss/gloss
59
0,65
38
34
reasonable
high
E
0.7mm +/-
cast acrylic
Versato® 1113QN
3
satin/satin
58
0,68
39
36
reasonable
high
E
0.7mm +/-
cast acrylic
PyraLed RG
3
matt/satin
56
0,73
41
38
reasonable
high
E
small
PyraLed 4
3
satin/gloss
53
0,75
40
45
reasonable
high
E
0.7mm +/-
cast acrylic
PyraLed® 1113QN
4
satin/satin
53
0,65
34
39
reasonable
high
E
0.8mm +/-
cast acrylic
PyraLed® RG02
4
matt/satin
51
0,76
39
tbm
high
no
Bs1d0
0.1mm +/-
polycarbonate
PyraLed RG
4
matt/satin
48
0,90
43
43
reasonable
high
E
small
®
PyraLed 1 UV*
4
matt/gloss
39
0,87
34
tbm
high
high
Bs1d0
0.1mm +/-
polycarbonate
PyraLed®1b UV*
4
gloss/gloss
39
0,83
32
tbm
high
high
Bs1d0
0.1mm +/-
polycarbonate
PyraLed® RG
6
matt/satin
38
0,87
33
tbm
reasonable
high
E
small
PyraLed 3
10
satin/satin
29
0,78
23
73
reasonable
high
E
1.4mm +/-
cast acrylic
PyraLed 3
20
satin/satin
16
0,65
10
45
reasonable
high
E
2.6mm +/-
cast acrylic
®
®
®
®
Chandeliers Rijksmuseum by Bronnenberg
Thickness
mm
*Running out of stock
®
®
®
acrylic XT
acrylic XT
acrylic XT
acrylic XT
9
A d v a nce d c o lle c t ion
The advanced diffusers have the best quality. This
in ceilings with backlighting. The
quality can be found in the score for variable “effici-
special microstructure of the
ency”, a multiplication of transmission and diffusion.
surface contributes to this type’s
In short, the most light transmission and the best dif-
perfect appearance. This diffuser
fusion. There are also advanced diffusers made of
is also recommended as a front
acrylic or polycarbonate.
sheet for light-conducting plates.
Bayer’s Makrolon ® DX series is the very
The very best additives are used in the advanced
best quality polycarbonate diffuser. We keep
diffusers. In the OPY series made under our direction,
all of the types indicated in stock. The DX series
nano-additives are used that range in size between
is extremely suitable for use in lighting and illumina-
50 and 100 nm. The method for dissolving these par-
ted advertising. In exterior applications, you do need
parking garages and public transportation stations.
ticles and keeping them in solution requires extremely
to use a UV-stabilised version. The DXAR8141 type of
Warm (141) and Cool (139) tints are distinguished
stringent process control; our producer succeeds in
light diffuser is the only one with a scratch-resistant
throughout the entire Makrolon ® DX range. We re-
this magnificently.
layer that is also UV-stabilised and very chemical-re-
commend using cool white LEDs. For coloured LEDs,
sistant. So graffiti can be easily removed: practical in
warm is better. This yields a purer representation of
such critical environments such as football stadiums,
the colour and less whitening. The Makrolon® Lumen
Advanced diffuser assortment
PyraLed ® OPY2 and OPY3 are the best that is available in cast acrylic. PyraLed ® ST6 is an extruded acrylic, i.e. without thickness tolerance, and of very good
series is not yet in stock but can be supplied. These
BENEFITS
quality. This diffuser is particularly suitable for use in
• highest efficiency
backlit light boxes - as a front sheet - or as a sheet
• best diffusion/diffusivity
• colour purity and stability
10
polycarbonate diffusers have high light transmission
but low diffusivity and are therefore particularly suitable as diffuser sheets in front of a light guide plate.
Table 3. Advanced collection
Type number
Thickness
mm
Surface
Light transmission %
Half-peak divergence angle
Complies
with UGR
Impact
resistant
UV
stable
Fire class.
EN.13501
Thickness
tolerance
Material
PyraLed® ST6B
1,5
matt/gloss
90
0,49
44
<33
yes
reasonable
high
E
small
acrylic XT
Makrolon® DX NR 141
1,5
matt/gloss
76
0,73
55
about 47
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
Makrolon® DX141
1,5
gloss/gloss
74
0,78
58
39
no
high
no
Bs1d0
0.1mm +/-
polycarbonate
Makrolon DX UV 1141
1,5
gloss/gloss
73
0,77
56
47
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
Makrolon DX139
1,5
gloss/gloss
65
0,89
58
76
no
high
no
Bs1d0
0.1mm +/-
polycarbonate
Makrolon® DX UV 1139
1,5
gloss/gloss
65
0,89
58
76
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
Makrolon® DX NR 139
1,5
matt/gloss
63
0,92
58
about 76
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
PyraLed ST6B
2
matt/gloss
88
0,60
53
<33
yes
reasonable
high
E
small
acrylic XT
PyraLed ST6A
2
matt/gloss
80
0,61
49
33
no
reasonable
high
E
small
acrylic XT
PyraLed® ST1
2
matt/gloss
60
0,75
64
50
no
reasonable
high
E
small
acrylic XT
PyraLed® ST6A
3
matt/gloss
80
0,55
44
33
yes
reasonable
high
E
small
acrylic XT
Makrolon DX AR8141*
3
gloss/gloss
65
0,80
52
about 75
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
Makrolon DX141
3
gloss/gloss
64
0,82
52
60
no
high
no
Bs1d0
0.1mm +/-
polycarbonate
Makrolon® DX UV 1141
3
gloss/gloss
62
0,78
48
60
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
PyraLed® ST1
3
matt/gloss
61
0,77
47
tbm
no
reasonable
high
E
small
acrylic XT
Makrolon DX NR 141
3
matt/gloss
61
0,77
47
about 60
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
Makrolon DX139
3
gloss/gloss
58
0,89
52
75
no
high
no
Bs1d0
0.1mm +/-
polycarbonate
Makrolon® DX UV 1139
3
gloss/gloss
57
0,81
46
75
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
PyraLed® OPY3 BS
3
satin/satin
56
0,86
48
47
no
reasonable
high
E
0.7
cast acrylic
Makrolon DX NR 139
3
matt/gloss
54
0,86
46
about 75
no
high
high
Bs1d0
0.1mm +/-
polycarbonate
PyraLed OPY2 BS
5/8
satin/satin
72
0,55
40
26
no
reasonable
high
E
0.9
cast acrylic
PyraLed® OPY2
10
gloss/gloss
81
0,48
39
25
no
reasonable
high
E
1.4
cast acrylic
PyraLed® OPY2 BS
10
satin/satin
68
0,58
39
28
no
reasonable
high
E
1.4
cast acrylic
6/10
gloss/gloss
45/38
0,77
29
57
no
reasonable
high
E
1.4
cast acrylic
10
satin/satin
35
0,80
28
60
no
reasonable
high
E
1.4
cast acrylic
®
®
®
®
®
®
®
®
®
®
Luminiair of Spinlight
*With scratch resistant layer
PyraLed OPY3
®
PyraLed® OPY3 BS
Diffusivity Efficiency
11
Deci sion t r e e f o r illu m i n ate d adv e r ti s i n g / s i g n s
Back Lighting
close to LEDs
Edge Lighting
more depth
diffuser
edgelit
Side Lighting
light guide plate
PyraLed® OPY1
high thickness
PyraLed® OPY2 10mm
PyraLed® OPY2BS 10mm
PyraLed® OPY3 10 mm
PyraLed® OPY3BS 10mm
PyraLed®3 10mm
PyraLed®3 20mm
high diffusivity
impact resistantPCNU499UV
fire classificationPyraLed®1
BS1d0PyraLed® ST1
Vivak® (airports)
exterior
Primo XT N385
applicationPCNU499UV
PyraLed® ST1
Versato® 433
PyraLed®3
PyraLed® OPY3 10 mm
PyraLed® OPY3BS 10mm
low price
Primo XT N385
PCNU499UV
PyraLed®1
PyraLed®1113QN
12
LightPlex®
high transmission
minimal PyraLed RG
thickness
Primo XT N385
tolerancePCNU499UV
PyraLed®1
PyraLed® ST1
medium-high transmission
medium-high diffusivity
minimal PyraLed® RG
thickness tolerancePyraLed®1
minimal PyraLed ST1
thicknessPyraLed® RG
tolerancePyraLed® ST6
Makrolon® DX
impact resistantPyraLed®1
fire classification
BS1d0
impact resistantMakrolon® DX
fire classificationPyraLed®1
BS1d0
exteriorPyraLed® RG
applicationPyraLed®3
SetaLed®
PyraLed®4
PyraLed® 1113QN
exteriorPyraLed® ST1
applicationPyraLed® RG
PyraLed® ST6
PyraLed® OPY2 (BS)
PyraLed® OPY3 (BS)
Makrolon® DX
low priceVersato® 145 N2
M21000
145.10000
245.10000
PyraLed® RG
SetaLed®
PyraLed®4
PyraLed®1113QN
low pricePyraLed® RG
PyraLed®1
PyraLed®3
SetaLed®
PyraLed®4
PyraLed® 1113QN
Deci sion t r e e f o r lu m i n ai r es
Back Lighting
flat luminaires
medium-high transmission
medium-high diffusivity
minimal PyraLed® RG
thickness PyraLed®1
tolerance
impact resistantPyraLed®1
fire classification
BS1d0
exteriorPyraLed® RG
applicationPyraLed®3
SetaLed®
PyraLed®4
PyraLed® 1113QN
low pricePyraLed® RG
PyraLed®1
PyraLed®3
SetaLed®
PyraLed®4
PyraLed® 1113QN
Edge Lighting
line luminaires
diffuser
edgelit
PyraLed® OPY1
directional diffusers
(lightshaper)
Makrolon® SX
Luminit® foil
PYR-CDP 3A
PYR-DDP 2A
Side Lighting
light guide plate
LightPlex®
diffusers
distance
between LEDs
> 10mm
medium-high transmission
medium-high diffusivity
minimal PyraLed® RG
thickness tolerancePyraLed®1
distance
between LEDs
< 10mm
medium-high transmission
medium-high diffusivity
minimal PyraLed® RG
thickness tolerancePyraLed®1
impact resistantPyraLed®1
fire classification
BS1d0
exteriorPyraLed® RG
applicationPyraLed®3
SetaLed®
PyraLed®4
PyraLed® 1113QN
low pricePyraLed® RG
PyraLed®1
PyraLed®3
SetaLed®
PyraLed®4
PyraLed® 1113QN
high transmission
minimal PyraLed ST1
thicknessPyraLed® RG
tolerancePyraLed® ST6
Makrolon® DX
impact resistantMakrolon® DX
fire classificationPyraLed®1
BS1d0
exteriorPyraLed® ST1
applicationPyraLed® RG
PyraLed® ST6
PyraLed® OPY2 (BS)
PyraLed® OPY3 (BS)
Makrolon® DX
impact resistantPyraLed®1
fire classification
PCNU499UV
BS1d0
exteriorPyraLed® RG
applicationPyraLed®3
SetaLed®
PyraLed®4
PyraLed® 1113QN
low pricePyraLed® RG
PyraLed®1
PyraLed®3
SetaLed®
PyraLed®4
PyraLed® 1113QN
low priceVersato® 145 N2
M21000
145.10000
245.10000
PyraLed® RG
SetaLed®
PyraLed®4
PyraLed®1113QN
13
O pt ica l p la s t ic s
Another group of optical plastics consists sheets that
cation, but is visually disruptive. De-glaring sheets are
Luminit® foil
give light a specific direction or that multiply light
sheets that limit the light’s shining in order to minimise
Luminit ® foil is a light-shaping material on a polycar-
sources. We carry a number of products in this type
this “dirty” light. CDP and DDP are both de-glaring
bonate substrate. The microstructure works as a lens
of material, from producers including Jungbecker,
sheets, either 2 or 3 mm thick, made of clear structu-
and changes the parameters of the light bundle. This
Bayer and Luminit.
ral pressed acrylic.
way, circular bundles can be transformed into an
oval. Or a bundle of light can be bent to a 20-de-
Deglaring platen (Jungbecker)
X-diffuser Makrolon® SX
gree angle. These foils are very promising. The 20°
Glare is “dirty light”. A light source placed further out
Our Makrolon ® SX diffuser is an exceptionally succes-
“light bender” is in stock. Sample materials are availa-
and that shines too broadly is distracting: this “dirty”
sful example of directed diffusion. Ideal for use with
ble for other types that can be supplied from factory
light does not contribute to the light
LED strips to convert light points into a single straight
stock.
needed in the (work) lo-
line.
Table 4. Optical plastics
Type number
Thickness
mm
Function
Impact
resistant
UV stable
Fire classification
EN.13501
Thickness
tolerance
Material
Surface
PYR-CDP 3a
3
deglaring
reasonable
n.a.
E
small
cast acrylic
structure
PYR-DDP 2a
2
deglaring
reasonable
n.a.
E
small
cast acrylic
structure
Makrolon SX
1,45
x-direction
reasonable to be measured
Bs1d0
1.4mm +/-
polycarbonate
structure
Luminit foil
0,3
20° light deflection
n.a.
to be measured
Bs1d0
small
polycarbonate
structure
Welle corrugated sheet
2,8
optical corrugated sheet
high
yes
Bs1d0
1.4mm +/-
polycarbonate
hexagon structure
®
®
14
Li ght gu id e p la t e s
against each other. This can be accomplished without a noticeable seam of light. A suitable diffuser,
such as the the PyraLed ST6, is required. In this manner, light tracks of unlimited length can be made.
LightPlex ® is supplied without LEDs. We deliver exclusively to professionals in the lighting, signing and interior construction sectors. These professionals have the
necessary knowledge and experience in the area of
LightPlex by Everseen lichtreklame
®
light sources and power supplies. We are glad to pro-
LightPlex ® is a light-conducting plate, also called a
The LightPlex ® sheet guarantees the highest light ef-
vide advice, of course. LightPlex ® is made of cast
light guide plate (LGP). This is a sheet that emits light,
ficiency and the most perfect uniformity of all LGP
acrylic and therefore has a thickness tolerance. The
i.e. a light source. LEDs are placed at the butt end;
technologies currently available. The material does
complete product datasheet for LightPlex ® can be
the light runs through the plate and is reflected out-
not turn yellow and is exceptionally durable. Because
downloaded from our website.
ward through a pattern of points, so the light comes
the sheet is perfectly clear, the colour that the sheet
from the surface. A self-learning computer program
emits is exactly the colour of the illuminating LEDs. So
is used to beam the points into the sheet such that
this makes it very suitable for RGB.
the light sheet lights up uniformly. In short, the selflearning algorithm performs calculations for each se-
LightPlex ® can be made in sizes up to 2000 x 2000
parate size, also taking the placement of the LEDs
mm, in thicknesses from 4 - 15 mm. Larger swathes
into account and the way in which the points must be
of light - with LEDs on two sides - can be made by
placed for a truly uniform result.
placing LightPlex ® sheets with their polished butt ends
LightPlex ® by Multiapplicator ® Bobis Engineering BV
15
D i f fuser t ub e s
Our diffuser range consists of both sheets and tubes.
We have three variants of tubes that make light diffuse. XT satin is a right opal tube with a very beautiful
satin-finish surface. XT opal is an opal tube with a
glossy surface. The PyraLed diffuser tube is made of
light satin polycarbonate, very suitable for luminaires
and for lighting applications where impact-resistant
material is important. This is a range that is still under
development, which means that changes to the assortment are possible. The diameters shown in table
5 are currently in stock. Diffuser tubes are not suitable
for exterior applications.
Table 5. Pyraled® diffuser tube matt
Saxion Hogeschool by Proliad LED Lighting
Table 6. Satin tube
Table 7. Opal tube
Outer
diameter
Wall thickness in mm
Light transmission %
Material
Outer
diameter
Wall thickness in mm
Light transmission %
Material
Ø 40mm
2
82
acrylic XT
Ø 50mm
3
34
acrylic XT
Ø 50mm
3
81
acrylic XT
Ø 60mm
3
34
acrylic XT
Ø 60mm
3
81
acrylic XT
Ø 70mm
3
34
acrylic XT
Ø 70mm
3
81
acrylic XT
Ø 80mm
3
34
acrylic XT
Ø 80mm
3
81
acrylic XT
Ø 100mm
3
34
acrylic XT
Ø 90mm
3
81
acrylic XT
Ø 120mm
3
34
acrylic XT
Ø 100mm
3
81
acrylic XT
Ø 150mm
3
34
acrylic XT
Ø 120mm
3
81
acrylic XT
Ø 200mm
3
34
acrylic XT
Outer
diameter
Wall thickness in mm
Light transmission %
Material
Ø 70mm
2,5
65
polycarbonate
Ø 150mm
3
81
acrylic XT
Ø 300mm
4
about 30
cast acrylic
Ø 120mm
2,5
65
polycarbonate
Ø 160mm
3
81
acrylic XT
Ø 400mm
4
about 30
cast acrylic
Ø 150mm
3
65
polycarbonate
Ø 20mm
3
81
acrylic XT
Ø 500mm
5
about 30
cast acrylic
Ø 200mm
3
65
polycarbonate
Ø 250mm
3
81
acrylic XT
Ø 610mm
8
about 30
cast acrylic
Ø 250mm
3
65
polycarbonate
Ø 300mm
5
81
acrylic XT
Ø 610mm
5
about 30
cast acrylic
16
R o un d ro d “ Gho s t ”
Amsterdam Light Festival, picture Janus van den Eijnden
Ghost round rod is a lighting conductor, an edge-lit
the sides. Ghost round rod can be used beautifully
round rod. By shining light on the upper and/or lower
as a lighting rod in display windows, in works of art,
edge of the rod, the entire rod lights up to a length
decors, banisters, balustrades and furniture. The rod
of max. 1m.
is clear and transparent when the light is off. Ghost
The Ghost round rod is made of cast acrylic and
round rod can be supplied currently in 20mm and
contains nano-additives that not only conduct light
40mm diameters.
Decor by Invent Design
throughout the entire rod, but also make it glow along
Table 8. Round rod “Ghost”
Diameter
Material
Surface
Impact
resistant
Fire classification
EN.13501
Ø 20mm
acrylic XT
gloss
reasonable
E
Ø 40mm
acrylic XT
gloss
reasonable
E
17
A d d i t ion a l s e r vic e s
We would be glad to turn our semi-finished product
done perfectly. No uncertainty in the supply chain.
We have 30 years of experience in fabricating plas-
into a final product for you with our modern machi-
We work as partners, constructively and with open
tics. In both large one-off productions and in recurring
nes. We can take care of all processing with a rapid
communication. For us, additional services are an
high-quality series work. We have an extensive fleet of
laser, various CNC milling machines, bending equip-
extension of our standard task as a distributor. We gu-
machines and wide-ranging knowledge about fabri-
ment, ovens, polishing lathes and gluing technolo-
arantee that the right semi-finished products are in
cation possibilities and material properties.
gies. This, together with our extensive inventories, ma-
our warehouse in the right quantities.
kes PYRASIED Diffuser Company a reliable, expert link
in your supply chain.
Ultimately, you want the perfect material for your product with as little cost and effort as possible. And you
want it delivered on time, custom-made or processed
into a final product, packaged tidily, inspected and
possibly numbered. For us, this is no problem. PYRASIED Diffuser Company makes sure that everything is
Table 9. Additional services for each type of material
18
Material
Cutting
Milling
Lasering
acrylic XT
X
X
cast acrylic
X
X
polycarbonate
X
X
X
PETG
X
X
X
X
Bending
Cold
bending
Glueing
Drilling
Faceting
Polishing
Matting
Printing
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Li s t of t e r ms
Aufheller (brightener) an additive that makes the sheet appear brighter.
Backlitthe light source is behind the diffuser sheet.
Diffusivity the degree to which the light is dispersed.
Thickness tolerance a difference in the thickness within a sheet. For A-quality cast acrylic, the norm is +/- 0.4 mm +10% nominal thickness,
so a 10-mm plate runs from 8.6 to 11.4 mm. Within a single sheet!
Edgelitthe light source is placed on the edge of the sheet and shines into the sheet (see LGP).
Efficiencythe degree of diffusion multiplied by the average degree of light transmission across the spectrum.
Extrusiona continuous production process in which the sheet comes out of a flat extruder and is then formed to the proper thickness/shape.
Cast acrylic
acrylic made by hardening between glass sheets.
Glare“dirty” light. A light source placed further out and that shines too broadly is distracting:
it does not contribute to the light needed in the (work) location, but is visually disruptive. Related to the concept of URG.
Half-peak angle the optical angle with respect to the perpendicular which reduces the light beam’s strength to 50% of the perpendicular angle.
of divergence
LGP light guide plate a transparent plastic sheet into which a pattern has been beamed, so that light introduced by LEDs on the side is allowed to radiate
uniformly across the surface of the entire plastic sheet (see LightPlex ® on page 15).
Lightshapinga microstructure that works as a lens and changes the parameters of the light bundle.
Nano-diffusersdiffusers whose diffusivity is caused by light-dispersing particles smaller than 100nm.
Side-lit
this term is used when the light source(s) are placed behind and to the side of the sheet. The heart of the light bundles shines parallel to
the diffuser sheet. Often used for double-sided light boxes or boxes with limited installation depth. Also for shallow furniture.
Transmission
for lighting, the amount of light that gets through the diffuser; in other words, the amount measured on the side of the diffuser opposite the
light source. Often displayed as a graph over the spectrum of visible light.
UGR norm
Unified Glare Rating - a measure of direct blinding by luminaires. Established in EN 12464-1.
19
Pr a ct ical e xa mp le s
Example 1: the installation depth is 10 cm; fire safety class B must be met; the material must be UV-stable;
the work must be done as energy-efficiently as possible. White LEDs are used, 5000 K. Appearance must
be uniform. The surface is 1000 x 1000mm, horizontal.
Elaboration: in order to comply with the requirements
of fire safety class B, UV-stabilised polycarbonate is
required. For maximum energy efficiency, an advanced diffuser is required with the highest efficiency.
matt side
difuser DX NR139 1,5mm
Efficiency = transmission x diffusion, i.e. the highest
transmission with the best diffusion yields the highest
B (10cm)
score. Simple and effective. So we select a diffuser
from the DX series. Type DX 1139 and type DX NR139
A (9cm)
(1 side matt) satisfy the requirements. A thickness of
backing (wood/alu) with the light sources
1.5 mm with an area of 1000 x 1000mm will sag. So
the best is a 3-mm matt. Even if this sags slightly, you
won’t see it because of the matt surface. Therefore:
or LED points must therefore be no more than 9cm
with LEDs in a matrix. It’s easier to achieve a uniform
PyraLed type DX NR139. This has a diffusivity score of
apart.
distribution by using Light Guide Plates (LGP, such as
0.92. The definition is D = A/B, where A is the distance
Please note: often, LEDs on an LED strip are close to
LightPlex). They are also very thin (minimum 4mm thick
between the light sources (LED lines count as a sin-
each other. To achieve uniform surfaces, this is not at
LGP), with less loss but often with higher costs. (LGPs
gle light source!!!) and B is the distance between the
all necessary. It’s best to keep the distance between
are part of our delivery assortment, with maximum
back of the sheet and the light source. So A = D x B
the LEDs the same as the distance between the strips.
sizes of 2000 x 2000 or 1500 x 3000 in 1 laser surface
or, in other words, A = 0.9 x 10 = 9cm. The LED lines
20
A (10cm)
For this reason, PCBs are often used instead of strips,
with optimisation.)
A (9cm)
backing (wood/alu) with the light sources
Example 2: LED strips at a distance of 10cm from each other. The set-up must be as thin as possible. Light
efficiency is not that important, nor is efficiency: it must be cheap and uniform. The surface is vertical, the
A (10cm)
front of a bar.
Elaboration: if it’s not too rough a bar, a 5-mm thick-
This has a diffusivity factor of 1.70 in a 5mm
ness can be used. If things can get rough there, 10-
thickness. According to the formula D = A/B,
mm thick material is advisable. Extruded acrylic is
we get 1.70 = 10/B or, in other words, the
cheap. Since light efficiency is not important, we will
distance to the rear of the plate must not be
use a type with optimum diffusion: the Primo XT N385.
less than 6cm.
A (10cm)
B (6cm)
back side bar
(wood/alu)
difuser XT N385
B (6cm)
back side bar
(wood/alu)
difuser XT N385
Example 3: impact resistance is not important, nor is fire safety compliance. But we do want an extremely
efficient solution, preferably as flat as possible. PCB LED boards are used with a point-to-point distance in
the matrix of 4cm. The light colour of the diffuser must be neutral and must be suitable for RGB. It is practical to have a material without thickness tolerance. The size is 600 x 600mm.
Elaboration: an extruded acrylic can be used, as
tance between the rear of the diffuser and the light
this has little tolerance. The PyraLed ST6, with a thick-
source and A is the distance between the light sour-
ness of 2mm, is particularly suitable. The PyraLed RG
ces and D is the diffusivity factor, the distance to the
3-mm type (not yet available in 2-mm thicknesses!)
rear of the plate is: 4/0.6, or 6.7 cm. If we use RG with
is slightly less efficient but is cheaper. Let’s calculate
a diffusivity of 0.73, then the distance will be 4/0.73,
both. The ST6 has a diffusivity score of 0.60. So, ac-
or 5.5cm. However, the transmission of the ST6 is more
cording to the formula B = A/D, in which B is the dis-
than 40% higher and will therefore give more light
with less whitening of the RGB.
A (4cm)
A (4cm)
B (5,5cm)
PyraLed RG 3mm
B (6,7cm)
B (5,5cm)
PyraLed RG 3mm
PyraLed ST6 2mm
B (6,7cm)
21
A l s o goo d t o k no w
Our assortment: choices made when putting
How are the measurements performed?
angle. We then proceed to measure at an increasing
together the range
We measure light transmission with a spectrophoto-
declination toward the plate. The half-peak divergen-
PYRASIED develops its own diffusers together with plas-
meter. The result of the measurement is displayed
ce angle is the point at which we measure 50% of
tics producers. We have these manufactured for us.
graphically: transmission vs. wavelength (colour) of
the original light intensity.
Manufacturing is done in Europe, China and Indone-
the light. The graph shows the percentage of the light
sia. In addition, we purchase diffusers that manufac-
- distributed across the visible portion of the spectrum
Remarks about the methodology
turers sell in their standard assortments. Bayer is an
- that comes through the sheet. We measure diffu-
All measurements are performed to the best of our
example of this. Extensive research is done into pro-
sion (dispersion of light) with a set-up using points of
knowledge and ability. However, no rights may be de-
duction techniques and additives. Our knowledge in
light. The primary requirement for diffusion is that we
rived from this. For this reason, it’s important that you
the area of plastics production helps here, as does
don’t want to see the points of the LEDs. But that is not
yourself test whether the diffuser is suitable for your
our own lighting laboratory. PYRASIED Diffuser Com-
enough! The light surface must also be uniform. For
application. Proper measurement of transmission, dif-
pany has a (almost) complete overview of all diffusers
this, more distance to the light source is required. If
fusion and half-peak divergence is more difficult than
that can be produced and supplied worldwide. We
the distance between the light sources is A and the
you might first think. Since the plane of the light’s inci-
know all the manufacturers in Europe and the largest
distance between the light sources and the sheet is
dence is equal to that of the measurement surface
manufacturers around the world. We have managed
B, then the diffusion is D = A/B. So the closer you can
in our spectrophotometer, a highly diffusive material
to put together an exceptionally broad range be-
get the sheet to the light source while maintaining
will always show a high level of light loss outside the
cause we conduct a double strategy: both custo-
uniform lighting, the higher the diffusivity.
measurement surface and will therefore appear to
mer-specific production and purchasing of standard
Please note: for LED strips, this is the distance between
let less light through than is “actually” the case for the
materials. We have excellent relationships and direct
the LED strips!
sheet. For sheet material with no diffusing additives
access to nearly all of the important manufacturers.
To measure the half-peak divergence angle, we first
- i.e., with only a diffusive surface - you can expect
Our current diffuser assortment is unique in Europe in
measure the light intensity perpendicular to the diffu-
that the transmission is roughly equivalent to that of
terms of size, completeness and deliverability.
ser, with a light source behind it. This is the reference
the same material without structure. Measurements
22
reveal that this is not the case, due to the same ef-
a 3-mm thickness is DIFFERENT from 87% transmission
Important: with extruded materials, transmission nearly
fect. Materials with additives that increase diffusivity
in a 10-mm thickness. Surface structures generally
always decreases with an increase in thickness. This is
also score lower with a satin-finish surface than do
result in measured transmission loss. By contrast, the
because they are produced from the very same ba-
identical materials with a glossy surface. For acrylic,
increase in diffusion is quite real! Thicker plates also
sic material. With cast acrylic, the recipe has chan-
92% is the maximum, unless the sheet is given a very
result in measured transmission loss while, in reality,
ged and the transmission generally depends on the
advanced anti-reflective coating such as with the
this is actually far less so! The measurement of dif-
thickness!
Optium type.
fusivity was done by eye, with various observers and
one and the same procedure. The variations among
Guarantees
The light transmission of cast acrylic sheets is inde-
the observers turn out to be rather large. We have not
All materials we supply are guaranteed for their ma-
pendent of their thickness. If 10 g of diffusion additive
performed any statistical analysis that would justify a
terial properties as can be found in the datasheets
is added for each mm of thickness in a 5-mm thick
statement about the reliability intervals of the measu-
for acrylic, polycarbonate and PETG. Our factories
sheet, then this addition will be 5 g per mm in a 20-
rement data.
generally provide guarantees of at least 10 years. In
mm thick sheet. Nonetheless, measurements show
For the determination of efficiency: both underlying
the context of technical lighting properties, the reten-
that differing thicknesses still yield differing transmis-
variables were given equal weighting. We have no
tion of colour purity, transmission and diffusion are, of
sion values. Thickness influences the measurement.
reason to have either of these be weighted differently
course, important. These are covered by the 10-year
For unambiguous statements about transmission, dif-
from the other. We are open to substantive contribu-
guarantee.
fusion and half-peak divergence angle, materials of
tions.
equal thickness and surface structure must be com-
The selection table and the measurements are im-
Samples and mock-ups
pared. The measurement results are shown as care-
portant tools for selecting the material likely to be the
We have sample chains available, selected by ma-
fully as possible in the tables. But do take note: 87%
most suitable. However, never install without doing a
terial sort, but also from the standard, professional or
transmission in a satin finish is DIFFERENT from 87%
1:1 test.
advanced collections. Care to request these? Then
transmission in a glossy finish. And 87% transmission in
please contact us by e-mail at [email protected].
23
Our thanks to the man in the white coat
D i s t r i bu t i n g pa r t n e r :
Apolloweg 26
8938 AT L eeu w ar den
T h e Neth er lan ds
Secon d revi sed edit ion, S ept emb e r 2 01 5
T + 31(0)58-7676100
w w w.dif f u ser company.n l
w w w.pyr asied.n l
sales@ pyr asied.n l