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435/40 nm BrightLine® single-band bandpass filter

Part Number: FF01-435/40-25

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  • Your filter spectrum may differ slightly from the typical spectrum above, but is certified to meet the optical specifications noted below.
Optical Specifications
Transmission Band 1Tavg > 90% 415 – 455 nm
Center Wavelength 1435 nm
Guaranteed Minimum Bandwidth 140 nm
FWHM Bandwidth 1 (nominal)48.4 nm
Blocking Band 1ODavg > 5 200 – 403 nm
Blocking Band 2ODavg > 5 469 – 469 nm
Blocking Band 3ODavg > 5 469 – 505 nm
Blocking Band 4ODavg > 6 505 – 850 nm
Blocking Band 5ODavg > 2.5 850 – 925 nm
Blocking Band 6ODavg > 2 925 – 1100 nm

General Filter Specifications
Angle of Incidence0 ± 5 degrees
Cone Half-angle7 degrees
Optical Damage RatingTesting has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm2) for over 500 hrs.
Filter Effective Index2.02 Understanding ‘Effective Index of Refraction’ neff

Physical Filter Specifications (applies to standard sized parts; contact us regarding other sizes)
Transverse Dimensions (Diameter)25 mm
Transverse Tolerance (mounted)+ 0.0 / – 0.1 mm
Filter Thickness (Mounted)5.0 mm
Filter Thickness Tolerance (Mounted)± 0.1 mm
Clear Aperture≥ 21 mm
Substrate Thickness (unmounted)3.5 mm
Substrate Thickness Tolerance (unmounted)± 0.1 mm
OrientationArrow on ring indicates preferred direction of propagation of light

Revised Filter


435/40 nm BrightLine® single-band bandpass filter

• Tavg > 90% 415 – 455 nm
• Center Wavelength of 435 nm and GMBW of 40 nm
• FWHM of 48.4 nm

Custom sizing available in less than a week (sizing fee applies).
Part # FF02-435/40-25
(Non-US pricing info)

US domestic pricing only. If you are ordering from outside the US, please contact your nearest regional distributor for the correct list price.
Tech Note
Cleaning Optical FiltersInstructions for cleaning hard coated optical filters
Filter ReliabilityCompares the performance and reliability of hard coated filters to traditional soft-coated filters and provides information about the testing standards for Semrock filters
Working with Optical DensityTables to describe the relationship between OD and transmission with tips for quickly calculating OD


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