BBP-560 Broad Bandpass Filter

BBP-560 delivers a broad green/yellow window with ~90–94 % transmission across ~530–590 nm and near-baseline leakage across the rest of VIS–NIR.

Main passband (T): ~90–94 % T @ 530 – 590 nm
Band shape: Broad band around 560 nm with sloped edges
Out-of-band (VIS/NIR): ~0–2 % T across ~300 – 480 nm and ~700 – 1100 nm
SWIR tail: ~8–10 % T by ~1200 nm (optional extra blocking)
Ghost control: Optional rear AR and slight wedge available
Substrates: Borofloat®, Eagle XG, D263 T (≤ 450 °C), soda-lime (≤ 150 °C)
Size / thickness: 5 – 450 mm • 0.21 – 3.8 mm (custom cut & dicing)

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BBP-560 is a visible bandpass centred near 560 nm, delivering high transmission (~90–94 %) across a broad ~530–590 nm window. The sloped edges help suppress neighbouring colours while keeping throughput high for green/yellow illumination and sensing. Outside the main passband, transmission stays near baseline (~0–2 %) across most of the visible and near-IR, especially ~300–480 nm and ~700–1100 nm, improving contrast under mixed illumination.

Note for SWIR-sensitive detectors: transmission can rise again beyond ~1.15 µm and reach ~8–10 % by ~1.2 µm. If your sensor responds there, KUPO can add an additional blocking stack to suppress the SWIR tail.

Typical uses: 560 nm LED inspection lighting, green/yellow fluorescence emission isolation, multispectral colour-channel separation, reflectance/absorption photometry, and stray-light control in optical instruments. KUPO supplies rear-surface AR, slight wedge, and rapid custom cutting—from small test chips to 450 mm plates—on high-temperature glass (Borofloat®, Eagle XG, D263 T) or economical soda-lime.

$88,888.00

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Description

BBP-560 is a visible bandpass filter centred around 560 nm. It delivers a broad, high transmission peak of about ~90–94% across roughly ~530–590 nm, with sloped edges that suppress adjacent wavelengths. Outside the main passband, transmission stays near the baseline (generally ~0–2% across most of ~300–480 nm and ~700–1100 nm). The spectrum shows a small rise again in the SWIR beyond ~1.15 µm, reaching roughly ~8–10% T by ~1.2 µm, which is worth noting for SWIR-sensitive detectors.

Key advantages

High 560 nm throughput: ~90–94% T through the main green/yellow band for efficient 560 nm LED and illumination use.
Broad band selection: Useful width around ~560 nm for higher signal while still limiting unwanted colours.
Low out-of-band leakage (VIS–NIR): Near-baseline transmission across most of the visible and near-IR reduces background and improves contrast.
SWIR leakage awareness: A small upturn appears beyond ~1.15 µm (up to ~8–10% by ~1.2 µm); extra blocking can be added if required.
Production-ready build: Durable dielectric coating; optional rear-surface anti-reflection and slight wedge available to suppress ghosts/flare.
Custom formats: Borofloat®, Eagle XG or D263 T (0.21–3.8 mm) for high-temp use to ~450 °C; economical soda-lime for ≤150 °C. Custom sizes 5–450 mm.

Typical applications

560 nm LED illumination: Improve contrast in machine vision and inspection systems.
Fluorescence and bio-imaging: Isolate green/yellow emission bands while suppressing excitation and ambient spill.
Colour channel separation: Dedicated 560 nm channel for multi-spectral imaging and calibration.
Photometry and sensing: Clean spectral band for reflectance/absorption measurements around 560 nm.
Optical instruments: Stray-light control and spectral selection in analyzers and imaging optics.