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MidOpt Bi Series Filter Bi385

Uniforce Product

Salient Features

Bi Series Narrow Interference Bandwidth

  • 20-35nm FWHM; Narrow bandwidth
  • High transmission ≥85%
  • Designed for use with laser diodes
  • Ideal wavelength separation when multiple light sources of similar wavelengths are present
  • Reflective, mirror-type surface that helps minimize thermal effects
  • Available in sizes up to 79.5mm sq.

APPLICATIONS: Bi Series are popular for life science and laser analysis applications where only discrete wavelengths need to be passed to maximize system performance.

Bi385 Trans Graph

Bi385 UV narrowband interference filters can be used together with 385nm UV LED, UV fluorescent and other UV-producing lamp-based lighting. Bi385 filter material is designed to efficiently block visible through near-IR wavelengths while passing UV light. It can be useful when used in conjunction with UV curing, photocatalytic air/water purification and medical and analytic instrumentation, as well as various types of near-UV fluorescence imaging; blocking visible light together with light from deeper UV excitation sources. The substrate material is a precision polished absorptive filter glass that blocks deep red and near-IR wavelengths.

    • Useful Range : 370-390nm
    • FWHM : 25nm
    • Tolerance : +/- 5nm
    • Peak Transmission : >90%
    • Surface Quality : 40/20
    • Compatible LED : 385nm
    • Thickness : 1mm






MidOpt StablEDGE™ optical filters are specifically designed to be less  susceptible to effects from angular shifting seen when optical filters are placed in front of short focal length (<12 mm) camera lenses.
StablEDGE™ filters take advantage of absorptive filter glass to form the leading
edge of the filter passband.This assures no shifting in this region, even when the
lens FOV exceeds 100°.StablEDGE™ designs are  less angle-of-incidence sensitive, inherently more rugged, and are environmentally stable.



Bi385 Transmission Chart


Learn More About

›  Color Separation for Monochrome Imaging

›  Blocking Unwanted Light in Monochrome Imaging

›  How Bandpass Filters Increase Resolution in Monochrome Imaging

›  Near-IR Imaging in Monochrome Applications

›  Fluorescense Imaging in Monochrome Applications

> Learn More About How to Minimize the Effects of Short Shifting

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