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
Learn more
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.
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
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Tight 512 – 550 nm passband – > 90 % transmission delivers colour-pure, high-brightness green.
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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.
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Minimal IR tail – Only a gentle rise beyond 760 nm avoids spurious NIR pickup in most camera sensors.
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Hard-oxide durability – Ion-assisted coating withstands heat, humidity, solvents, and repeated cleaning.
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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
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Fluorescence microscopy & cytometry – Excite FITC-style dyes while dumping autofluorescence and IR.
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Machine-vision illumination – Pair with green LEDs/lasers to maximise signal-to-noise in reflective inspection.
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Projection & display engines – Channel the green primary cleanly in laser-phosphor or RGB-LED paths.
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Multispectral & hyperspectral cameras – Supply a discrete green channel for vegetation or stress indexing.
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Stage & architectural lighting – Create razor-saturated green beams or washes that stay bright without heating gels.
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Augmented-reality waveguides – Inject bright green imagery into see-through combiners without warming the substrate.
Need prototypes next week or volume lots next quarter? G13909 filters can be coated, diced, and shipped to your exact specifications—fast.
