Laser Filter Windows

Laser Safety Viewing Windows
Laser viewing windows enable you to see inside an enclosure while stopping the laser radiation from coming out, thus providing protection with the minimum of inconvenience.
These viewing windows are available for a wide variety of different types of lasers and can be made of either plastic or mineral glass.

Plastic Laser Filter Windows

Cost-effective, lightweight protection in large sizes for low power lasers and diffuse reflections from high power lasers 

Up to the largest size that is currently offered, which is normally 915 x 610 mm or 36.02 x 24.02 inches, we are able to provide any of these filters in custom sizes. If needed, we can also provide them machined according to an engineering drawing so they are prepared for system assembly. When there are more windows or a continuous need, this is an economically viable choice.

Click on the Filter part number to see the OD curve.

TT RANGE PLASTIC LASER FILTERS
Filter Part Number Laser TypeBlocking Wavelength
(nm)
Optical DensityVisible Light Transmission / ColourThickness
TT-F-AUV
CO2
190 – 375
10600
> 5
> 6
90 / clear4.75 mm
(0.19”)
TT-F-BArgon ion
KTP
190 – 532
10600
> 5
> 5
41 / orange3.6 mm
(0.14”)
TT-F-CRuby
HeNe
Red Diode
190 – 375
630 – 730
650 – 720
670 – 710
10600
> 5
> 2
> 3
> 5
> 5
63 / blue3.6 mm
(0.14”)
TT-F-DNd:YAG
Near IR
190 – 375
800 – 900
900 – 1070
1064
1100 – 1400
10600
> 5
> 2
> 5
> 6
> 3
> 5
40 / green3.6 mm
(0.14”)
TT-F-ENd:YAG
Near IR
KTP
Argon ion
190 – 375
375 – 533
800 – 900
900 – 1070
1100 – 1400
10600
> 5
> 4
> 2
> 5
> 3
> 5
16.5 / brown3.6 mm
(0.14”)
TT-F-FAlexandrite720 – 870
730 – 855
750 – 840
> 3
> 5
> 7
25 / pink3.6 mm
(0.14”)
TT-F-GNd:YAG190 – 400
800 – 1080
860 – 1064
1064
10600
> 5
> 3
> 5
> 6
> 5
65 / yellow-green3.2
(0.13”)
TT-F-HNd:YAG
Near IR
190 – 375
760 – 1070
1064
> 5
> 5
>6
42 / tan3.8
(0.15”)
TT-F-IUV
He:Cd
Near IR
Nd:YAG
Telecom
190 – 400
400 – 480
750 – 1900
800 – 1800
830 – 1700
1064
10600
> 5
> 2
> 2
> 3
> 5
> 6
> 5
25 / green3.6
(0.14”)
SIZES

TT- range plastic filter windows are available in the following standard sizes:

Size Part number suffix
610 x 915 mm
(24.02 x 36.02 inches)
– FS
610 x 610 mm
(24.02 x 24.02 inches)
– S
210 x 297 mm
(8.27 x 11.70 inches)
– A4
100 x 200 mm
(3.94 x 7.87 inches)
– R

The full part number is obtained by taking the filter reference and adding the part number suffix. Eg. TT-F-G-A4 is filter reference TT-F-G in size 210 x 297 mm.

Custom sizes are also available

Glass Laser Filter Windows

High visible light transmission and high protection levels

Below is the range of glass laser viewing windows. Please note that these are available only in the sizes specified.

Filter Part NumberLaser TypeBlocking Wavelength
(nm)
Protection Level
to EN 207
Visible Light Transmission / ColourThickness
FW-LRG1KBANd:YAG
Ho:YAG
Er:YAG
CO2
950 – 1000
>1000 – 1050
>1050 – 1400
>1400 – 2700
>2700 – 3000
5400-5400
10600 – 10600
DIR LB5
D LB6 + IR LB7
D LB6 + IR LB8
D LB4 + IR LB3
DIRM LB4
DIRM LB4
DIRM LB4
70 / clear5 – 6 mm
(0.20-0.24 inches)
FW-LRG1KFANd:YAG
Ho:YAG
Er:YAG
CO2
900 – 1050
>1050 – 1400
>1400 – 3000
>3000 – 11500
DIRM LB6
D LB7 + IR LB8 + M LB9
DIRM LB4
DI LB4 + R LB2 + M LB3
60 / light grey7 mm
(0.28 inches)
FW-LRS1DAAUV
KTP
180 – 315
>315 – 355
>355 – 367
>367 – 369
>369 – 371
>371 – 373
>373 – 375
>375 – 377
>377 – 380
>380 – 384
3950 – <4700
4700 – <4765
4765 – <5200
5200 – 14500
5400 – 5400
9000 – 11500
>14500 -25000
D LB10 + IR LB4 + M LB6Y
D LB6 + IR LB8 + M LB7Y
D LB6 + IR LB8 + M LB7Y
D LB6 + IR LB7 + M LB7Y
DIRM LB6
DIRM LB5
DIRM LB4
DIRM LB3
DIRM LB2
DIRM LB1
DIM LB4 + R LB3Y
DIM LB5 + R LB3Y
DI LB5 + R LB3Y + M LB6Y
DI LB5 + R LB3Y + M LB6Y
D LB4 + I LB3
D LB4 + I LB3
DI LB5 + R LB3Y + M LB6Y
90 / clear6 mm
(0.24 inches)
FW-LRG1EBAUV
KTP
180 – 315
315 – 532
D LB10 + IR LB5 + M LB5Y
D LB7 + IR LB8 + M LB8Y
30 / orange5 – 8 mm
(0.20-0.31 inches)
FW-LRG1KCANd:YAG
Ho:YAG
Er:YAG
CO2
900 – 1000
>1000 – 1050
>1050 – 1400
>1400 – 2100
>2100 – 25000
DIRM LB4
DIRM LB7
D LB7 + IR LB8 + M LB8Y
DI LB5 + R LB3Y + M LB3
DIM LB4 + R LB3Y
66 / light grey7 mm
(0.28 inches)
FW-LRG1LEAUV
KTP
Nd:YAG
180 – 315
315 – 532
1030 – 1100
D LB10 + IR LB5
D LB7 + IR LB8 + M LB8Y
D LB7 + I LB9 + R LB8 + M LB8Y
30 / orange8 – 10mm
(0.31-0.39 inches)
FW-LRG1KAARuby
Near IR
Nd:YAG
CO2
647 – 689
690 – 749
750 – 1200
>1200 – 1320
>1320 – 1400
>1400 – 1520
>1520 – 1550
9000 – 11000
DIRM LB3
DIRM LB6
D LB7 + IR LB8 + M LB8Y
DIRM LB6
DIRM LB3
DIRM LB3
DIRM LB2
DI LB3
45 / green7 mm
(0.28 inches)
FW-LRG1QCAAlexandrite
Nd:YAG
630-635
750-800
>800-1064
>1064-1100
>3000-25000
0.01W 2x10E-6J RB1
D LB6 + IRM LB8
D LB6 + IR LB8 + M LB9
D LB6 + IRM LB8
DI LB4 + R LB3Y + M LB4Y
45 / green4 – 5 mm
(0.16-0.20 inches)
SIZES

These glass filter windows are available in A4 (297 x 210mm) except for FW-LRG1KBA and FW-LRG1QCA (200 x 100mm).
FW-LRS1DAA is available up to 3000 x 2000mm.

Glass vs Polycarbonate Plastic Filters

Lasermet offer a wide range of laser filters which include both polycarbonate and glass filters. Users should be aware of the pros and cons of each type before making a decision on which to buy.

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