Bandpass filters transmit a narrow band around a centre wavelength and block light on both sides. They isolate a laser line, clean up an LED or lamp, or select a fluorescence emission band.
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Key specifications
- Centre wavelengths from 250 nm to 1550 nm
- Bandwidth 10 nm FWHM
- Blocking OD > 4 from 200 to 1200 nm outside the passband
- Ø12.5, 25 and 50 mm, mounted
How to choose
Choose the centre wavelength of your source or emission line. For laser lines, a 10 nm filter leaves room for small wavelength tolerances; for imaging, check that the filter diameter matches your optical path.
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