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You should know that about the optical filters from Semrock.



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Andreas Bichler
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+49 8153 405-48
a.bichler@laser2000.de
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Axel Haunholter
Sales & Marketing
+49 8153 405-32
a.haunholter@laser2000.de
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Product description

Quickly find your desired filter and compare the spectral graphs




Hard Coated Filters with Ion Beam Sputtering Equipment (IBS)

Semrock's filters show the same spectral properties even after years.
  • Convince yourself of our filters and take advantage of the 10-year warranty on our coatings.


At high power levels of xenon, mercury, or LED lamps, low quality optical filters can fade after years. Tests show that even after years, the layer design still has the same spectral specifications. This is particularly important for long-term measurements, or for devices that do not provide maintenance cycles for the filter replacement.




Picture 1: After 300 operating hours of a "Dapi Exciter" light source. The filter has a faulty coating.



Picture 2: After 1000 operating hours of a "Dapi Exciter" light source. No visual damage and spectral changes visible.



Picture 3: Transmittance curve of a soft coated filter from a market companion compared to a Semrock filter. The blue graph describes the spectral behavior before irradiation with a light source. The red curve shows the transmission after 5 days of irradiation.

Custom filter sizes


Most of the filter designs available in the catalog can be adapted to your specific requirements for a small special size surcharge of mostly 65, - €.

These special adjustments have a delivery time of 1 to 2 weeks. Simply enter the required diameter, rectangular dimensions or diameter of a filter when ordering.

It is easy to produce diameters from 5 mm to 50 mm in 1 mm increments. The solid aluminum filter features 1/2 "(12.7 mm), 1" (25.4 mm), and 2 "(50.8 mm) rings.

For some unmounted filters, the edges should be colored black due to reductions in stray light, and this should also be specified when ordering.  

We offer fast and customized filters for your optical application.





Picture 4: Left a rectangular unfolded filter. Just specify the lateral dimensions when ordering. On the right are filters in the aluminum ring to see the usual sizes of 1/2, 1 and 2 inches are quickly available.



Picture 5: Unboxed filters in round and rectangular shape. Here, the edges can be colored black to avoid unwanted stray light. Diameters of 5 to 50 mm are easily possible.

Quickly calculate a price




Filter Sets

Mostly designed for Raman spectroscopy, or other applications where fluorescent agents are used.



Picture 6: With Semrock's great experience in cream spectroscopy for excitation filters, dichroitics and anti-corrosive filters, we are the ideal partner.

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