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> Optical filter 637DF19 red emission or 633 laser 25MM
Optical filter 637DF19 red emission or 633 laser 25MM
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This high end precision optical interference filter is designed to efficiently collect the Red emission of RFP, or other bright Red fluorescence emitters. A second use would be to isolate the 633 HeNe or Red 635 Diode Laser. The filter has extremely sharp edges and high level of attenuating of excitation light shorter than 610nm. The filter can also be used to isolate the primary red portion of the spectrum with very high efficeincy.
The filter specifications are as follows: Cut-on wavelength; 625nm +/-3 nm, Cut-off wavelength; 645 +/-5 nm, Size 25 mm +0/-.25mm, Transmission >80%, Free Spectral range UV to 1250 nm. New cost is about $160.00
If you are still not finding a good match, follow my links to Omega's Build a Filter. With a note to the effect that cosmetic seconds are acceptable, you will be surprised how economical an exact match can be.
For much more information on interference filters and their applications please visit my blog at www.bjomejag.squarespace.com/ . If you have ideas for additional topics to elaborate on, do leave a note.
