G13909 Broad Bandpass Filter

Razor-clean green filter (512 – 550 nm, > 90 % T) with < 1 % leakage in UV/blue and red, plus only a mild IR tail beyond 760 nm.

Green passband: 512 – 550 nm, > 90 % T
UV/blue block: < 1 % T @ 400 – 490 nm
Red block: < 1 % T @ 585 – 750 nm
IR tail: < 15 % T @ 780 nm
Construction: Ion-assisted hard-oxide; 5 – 450 mm, 0.21 – 3.8 mm thick
Custom options: AOI tuning, ripple smoothing, rapid prototypes

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G13909 isolates a sharply defined green band while pushing nearly every other wavelength to background. Transmission rises above 90 % near 512 nm, stays over that threshold to ~550 nm, and drops below one percent by ~585 nm. UV/blue remains near zero up to the green edge, and yellow-to-red energy stays suppressed right out to the near-IR; only a gentle tail lifts beyond 760 nm but remains under 15 % at 780 nm.

KUPO coats 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 about two weeks.

Typical uses: FITC-style fluorescence, green-LED machine vision, RGB laser/LED projection, multispectral vegetation indexing, saturated stage beams, and AR waveguides needing bright green injection free of UV/IR heat.

$88,888.00

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Description

G13909 isolates a sharply defined green band while pushing almost every other wavelength down to background level. Transmission rises above 90 % at roughly 512 nm, stays > 90 % through about 550 nm, and drops below 1 % by ~585 nm. UV/blue energy remains near zero up to the green edge, and yellow-to-red light stays suppressed right out to the near-IR; only a small tail creeps up beyond 760 nm, but it stays below 15 % at 780 nm. If you need vivid green with minimal leakage elsewhere, G13909 keeps the beam clean.

Key advantages

Tight 512 – 550 nm passband – > 90 % transmission delivers colour-pure, high-brightness green.
Strong out-of-band blocking – < 1 % T from 400 – 490 nm and 585 – 750 nm keeps UV/blue noise and red flare off the detector.
Minimal IR tail – Only a gentle rise beyond 760 nm avoids spurious NIR pickup in most camera sensors.
Hard-oxide durability – Ion-assisted coating withstands 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-style dyes while dumping autofluorescence and IR.
Machine-vision illumination – Pair with green LEDs/lasers to maximise signal-to-noise in reflective inspection.
Projection & display engines – Channel the green primary cleanly in laser-phosphor or RGB-LED paths.
Multispectral & hyperspectral cameras – Supply a discrete green channel for vegetation or stress indexing.
Stage & architectural lighting – Create razor-saturated green beams or washes that stay bright without heating gels.
Augmented-reality waveguides – Inject bright green imagery into see-through combiners without warming the substrate.