Tight-band green filter (494 – 502 nm, ≈92 % T) with strong UV/blue and red blocking plus an optional 750 – 770 nm NIR window.
G32503 peaks near 500 nm, delivering vivid green output while keeping
UV/blue, yellow-red, and most mid-IR out of the beam. Transmission climbs past 90 % around
494 nm, holds >90 % through ~502 nm, and falls below 5 % by ~560 nm.
A controlled secondary rise beyond 710 nm reaches ~80 % between 762 nm and
770 nm for alignment beacons or dual-band imaging.
Densified, ion-assisted layers limit edge shift to ±3 nm for ±5° AOI, and shrug off heat,
humidity, solvents, and repeated wipe-downs.
KUPO supplies Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG substrates in 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 excitation, green-LED machine vision, RGB
laser/LED projection, multispectral vegetation indexing (green + NIR), stage beams, and AR
waveguides that need razor-saturated green without UV/IR heat.
G32503 is a tight-band green filter that peaks near 500 nm, delivering vivid green output while keeping UV/blue, yellow–red, and most mid-IR energy out of the beam. Transmission climbs past 90 % around 494 nm, holds >90 % through roughly 502 nm, and falls below 5 % by ~560 nm. A secondary rise appears beyond 710 nm, reaching ~80 % between 762 nm and 770 nm before tapering toward 780 nm. The spectrum is perfect when you need saturated green but still want an optional NIR “peek” for alignment or dual-band imaging.
Key advantages
Tight 494 – 502 nm passband – ~92 % peak transmission maximises green luminance and colour fidelity.
Deep out-of-band blocking – < 1 % T from 580 – 67 nm and < 8 % from 410 - 450 nm suppresses red flare and UV/blue noise.
Built-in NIR window – Controlled ~80 % transmission at 750 – 770 nm enables alignment beacons or secondary channels without extra optics.
Angle-stable hard-oxide coating – Ion-assisted layers keep edge shift within ±3 nm for AOI changes of ±5 ° and withstand 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 – Deliver FITC-style excitation 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 – Create razor-saturated green beams or washes that stay bright on stage without heating gels, while 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 high-volume lots next quarter? G32503 filters can be coated, diced, and shipped to your exact specifications—fast.