Narrow green filter (495 – 535 nm, > 90 % T) with strong UV/blue & red blocking plus an optional 760 nm NIR window.
G13905 carves out a vivid green passband while suppressing UV/blue, yellow-red,
and most near-IR energy. Transmission passes 90 % near 495 nm, stays above that level to ~535 nm,
and drops below one percent before 580 nm. A controlled rise near 760 nm (~65 % T) permits NIR
alignment beacons or dual-band imaging without extra optics.
KUPO supplies Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG substrates cut to any
outline—from 5 mm chips to 450 mm plates—with thicknesses of 0.21 – 3.8 mm, and can ship
prototypes in roughly two weeks.
Typical uses: FITC-style fluorescence excitation, green-LED machine vision, RGB laser/LED
projection, multispectral vegetation indexing (green + NIR), saturated stage beams, and AR waveguides
that need bright green injection without UV/IR heat.
G13905 carves out a vivid green passband while keeping almost every other colour out of the beam. Transmission passes the 90 % mark near 495 nm, stays above 90 % through roughly 535 nm, and drops below 1 % before 580 nm. UV/blue light remains near zero up to the green edge, and yellow-to-red energy stays suppressed until a secondary rise peaks around 65 % at about 760 nm—useful for alignment or dual-band imaging—before declining toward the near-IR. The spectrum is a strong choice when you need saturated green throughput with an optional NIR “peek.”
Key advantages
Tight 495 – 535 nm passband – > 90 % transmission maximises green luminance and colour fidelity.
Deep out-of-band blocking – < 1 % T from 380 – 475 nm and 580 – 700 nm shields sensors from UV/blue noise and red flare.
Built-in NIR window – Controlled ~65 % transmission near 760 nm enables alignment beacons or secondary channels without extra optics.
Hard-oxide durability – Ion-assisted coating resists heat, humidity, solvents, and repeated cleaning.
Flexible formats – Round, square, or free-form blanks from 5 mm to 450 mm, 0.21 – 3.8 mm thick, on Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG glass.
Typical applications
Fluorescence microscopy & cytometry – Excite FITC-like dyes while dumping autofluorescence and IR.
Machine-vision illumination – Pair with green LEDs or lasers to boost SNR in reflective-part inspection.
Projection & display engines – Channel green primaries cleanly in laser-phosphor or RGB-LED light paths.
Multispectral & hyperspectral cameras – Provide a discrete green channel with an NIR reference for vegetation indexing.
Stage & architectural lighting – Produce razor-saturated green beams or washes that stay bright on stage without heating gels; the NIR notch helps maintain camera-friendly contrast.
Augmented-reality waveguides – Inject bright green imagery into see-through combiners while keeping the substrate cool.
Need prototypes next week or production lots next quarter? G13905 filters can be coated, diced, and shipped to your exact specifications—fast.