MBP-A50 Multiband Filter

3-band multiband filter isolating UV (350 nm), Green (520 nm), and NIR (966 nm) in a single optic — replacing multiple discrete filters for streamlined optical paths and reduced insertion loss.

  • Band 1 — UV / 350 nm
  • Centre / Range: 350 nm (343 – 356 nm)
  • Bandwidth (FWHM): 13 nm
  • Peak transmittance: ≥ 70.7 % T
  • Band 2 — Green / 520 nm
  • Centre / Range: 520 nm (396 – 645 nm)
  • Bandwidth (FWHM): 249 nm
  • Peak transmittance: ≥ 95.2 % T
  • Band 3 — NIR / 966 nm
  • Centre / Range: 966 nm (831 – 1100 nm)
  • Bandwidth (FWHM): 269 nm
  • Peak transmittance: ≥ 95.5 % T
  • Overall performance
  • Inter-band blocking: OD ≥ 0.3 between passbands
  • Out-of-band blocking: OD ≥ 0.3 (200 – 1100 nm excluding passbands)
  • AOI: 0° (normal incidence); custom angles available
  • Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
  • Custom options: Band shifting, bandwidth tuning, additional bands, rapid prototypes
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MBP-A50 Multiband delivers Centre / Range 350 nm (343 – 356 nm), Bandwidth (FWHM) 13 nm, and Peak transmittance ≥ 70.7 % T.

The hard-oxide coating is built for repeated handling, heat, and cleaning.

Best suited for:

Multi-spectral imaging systems that require simultaneous capture across visible and near-infrared channels — this 3-band design eliminates the need for a motorised filter wheel, reducing mechanical complexity and increasing acquisition speed

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Description

MBP-A50 opens two wide transmission windows that together capture both the visible spectrum and a broad NIR band. The first passband spans approximately 410–610 nm with Tavg above 93.8 % and a peak of 95.2 %, covering the blue-through-orange visible range. The second passband runs from 870 nm to beyond 1100 nm with Tavg above 94.4 % and a peak of 95.9 %. Between the two windows, a sharp blocking zone drives Tavg below 1.5 % from 700–780 nm, cleanly separating the visible and NIR channels. The combination of broad visible coverage and extended NIR response makes MBP-A50 a versatile dual-band filter for day-and-night or visible-plus-NIR applications.

Key Advantages

  • Wide visible passband with Tavg > 93.8 % (410–610 nm) - covers the full blue-to-orange spectrum, preserving natural colour rendition for visual imaging.
  • Broad NIR passband with Tavg > 94.4 % (870–1100 nm) - extends well beyond the typical 850–950 nm range into the silicon detector's long-wavelength tail.
  • Sharp inter-band blocking with Tavg < 1.5 % (700–780 nm) - cleanly separates visible and NIR channels with a steep-sided notch.
  • Hard-oxide durability - ion-assisted coating withstands heat, humidity, solvents, and repeated cleaning.
  • Custom formats available - round, square, or free-form blanks from 5 mm to 450 mm, thickness 0.21–3.8 mm, on Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG substrates.

Typical Applications

  • Day-night surveillance and security cameras - transmits full-colour visible during the day and switches to 850–940 nm NIR active illumination at night without swapping filters.
  • Precision agriculture and multispectral UAV payloads - captures visible colour and NIR reflectance in a single optical path for NDVI, crop stress, and yield mapping.
  • Autonomous vehicle perception - passes camera-visible bands alongside 905 nm and 940 nm LiDAR/ToF ranging signals through shared front optics.
  • Biomedical and clinical imaging - supports simultaneous visible-light tissue inspection and NIR fluorescence (ICG dye, 800–900 nm) detection.
  • Industrial machine vision - enables multi-wavelength inspection by pairing visible defect detection with NIR material classification on a single sensor.

Need prototypes in days or production volumes next quarter? MBP-A50 filters can be coated, diced, and shipped to your exact specifications.

FAQ

MBP-A50 FAQ

What is MBP-A50 and what is it used for?

MBP-A50 is a Dual-Band Bandpass Filter - Visible + NIR (410-610 nm and 870-1100 nm). MBP-A50 opens two wide transmission windows that together capture both the visible spectrum and a broad NIR band. The first passband spans approximately 410-610 nm with Tavg above 93.8 % and a peak of 95.2 %, covering the blue-through-orange visible range. Common uses include Day-night surveillance and security cameras, Precision agriculture and multispectral UAV payloads, Autonomous vehicle perception, and Biomedical and clinical imaging.

What are the key optical specs of MBP-A50?

Key published specs for MBP-A50 include Centre / Range: 350 nm (343 – 356 nm); Bandwidth (FWHM): 13 nm; Peak transmittance: ≥ 70.7 % T; Centre / Range: 520 nm (396 – 645 nm); Bandwidth (FWHM): 249 nm.

What applications is MBP-A50 best suited for?

MBP-A50 is commonly used for Day-night surveillance and security cameras, Precision agriculture and multispectral UAV payloads, Autonomous vehicle perception, and Biomedical and clinical imaging. Day-night surveillance and security cameras - transmits full-colour visible during the day and switches to 850-940 nm NIR active illumination at night without swapping filters.

Can MBP-A50 be customized for size, substrate, or coating requirements?

KUPO lists the construction for MBP-A50 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include Band shifting, bandwidth tuning, additional bands, rapid prototypes. Custom formats available - round, square, or free-form blanks from 5 mm to 450 mm, thickness 0.21-3.8 mm, on Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG substrates.

What should I know about angle of incidence and durability for MBP-A50?

The published angle of incidence for MBP-A50 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.

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