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#3B60AD Bi405 Violet Interference Bandpass Filter

Bi405 Violet Interference Bandpass filters can be beneficial in removing ambient light in order to image subjects illuminated with 405nm laser diodes. 405nm wavelength is commonly used in Blu-ray applications similar to blacklite filters. This filter is also used in fluorescence applications.

Useful Range : 400-415nm
FWHM : 30nm
Tolerance : +/- 5nm
Peak Transmission : ≥85%
Surface Quality : 40/20

Download Transmission Data

Bi405 Transmission Data (Typical)

wavelength (nm)	transmission (%)

wavelength (nm)	transmission (%)

Filter Mount & Size Options

Threaded Mount

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Unmounted & Custom Size

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The performance of a filter is based on what happens to light passing through the filter. The apparent color of light reflected off the surface is not a reliable way to judge the filter's capabilities. Batch-to-batch difference in the apparent color of the coatings or filter substrates can often be easily seen when looking at two examples of the same filter type. The color of the coating does not indicate a disparity in performance. Filters 62mm and greater have a surface quality tolerance of 60/40.

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