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STANDA in Lithuania
STANDA  P.O. Box 2684, 03001 Vilnius, Lithuania
Phone +370 5 2651474, Fax +370 5 2651483
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Home > Laser Eye Protection > Protective Laser Filters

Laser Filters Technology
Absorbing filters are made of materials studied in order to block light of a defined wavelength range of the spectrum; they absorb laser radiation dangerous for the eye and transform it to heat, when laser beam hits the filter. Both plastic and glass can be used for the production of absorbing filters.
Interferential filters base themselves on the physical phenomenon of interference, reflecting different wavelength laser emissions; depending on the wavelength of the light, radiation is partly reflected on each single layer composing the filter. This hightech glass filter is made of several layers which reflect backwards the optical radiation.

Ultra Fast Laser
The term ultrafast laser is used for mode-locked lasers emitting ultrashort pulses, i.e. pulses with durations of fs or ps.
International studies proved that, while highly absorbing filters made from ion-doped mineral glass have very good resistance against ultrafast lasers, polycarbonate filters can vary their absorption under the influence of a laser irradiation.
Our laser filters are certified according M-mode as described in EN207:2009 for laser pulses shorter than 10-9 s; in this norm is required a laser damage test during which the filter shall not lose its protective effect and not show any induced transmission.

Tables and protection levels
D - continuous wave laser View table
I - pulsed laser (pulse length: 10-4 to 10-1 s) View table
R - Q-switched pulsed laser (short pulses; pulse length: 10-9 to 10-7 s) View table
M - mode-locked pulsed laser (ultra short pulses; pulse length: <10-9 s) View table

Click model to see detailed information:

11F-1001 11F-1002 11F-1005 11F-1007 11F-1008 11F-1009 11F-1011 11F-1012 11F-1014
11F-1015 11F-1016 11F-1017 11F-1018 11F-1019 11F-1020 11F-1021 11F-1022 11F-1024
11F-1025 11F-1026 11F-1028 11F-1029 11F-1030 11F-1031 11F-1032
11F-2001 11F-2002 11F-2004 11F-2005 11F-2006 11F-2007 11F-2011 11F-2012
11F-3001 11F-3002 11F-3003 11F-3004 11F-3005