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> Optical interference filter 420BP10 25.4MM blue analyse
Optical interference filter 420BP10 25.4MM blue analyse
This filter is NOS from an instrument manufacturer. It was used to isolate a band of deep blue for absorption studies. The filter free spectral region is controlled from UV to FIR with very high attenuation (OD 6 Avg).
CWL 420+-2nm, FWHM 10+-2nm, Transmission 35 to 60%, blocking from UV To FIR, Size 25.4 +0-.5mm, Mounted in an Al holder.
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.
