G72918 Dual-Band Filter

Dual-band green filter (475 – 517 nm, > 90 % T) with an integrated ~740 nm NIR window—perfect for bright green plus alignment telemetry.

Green band: 475 – 517 nm, > 90 % T
UV/blue block: < 1 % T @ 390 – 450 nm
Red block: < 1 % T @ 550 – 700 nm
NIR window: ~740 nm, ~88 % T (optional)
Construction: Ion-assisted hard-oxide; 5 – 450 mm, 0.21 – 3.8 mm thick
Custom options: Ripple flattening, AOI tuning, rapid prototypes

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G72918 couples a high-brightness green passband with a convenient near-IR window. Transmission soars past 90 % near 475 nm, holds above that mark to ~517 nm, and then collapses below one percent by ~550 nm—keeping yellow-to-red light out of the system. A second rise near 730 nm peaks around 87 % at ~740 nm before tapering toward 770 nm, giving you an alignment or telemetry channel without extra optics.

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: GFP/FITC fluorescence, green-LED or laser machine vision with NIR fiducial tracking, RGB laser/LED projection, NDVI and multispectral drones (green + NIR), saturated stage lighting, and AR waveguides needing bright green plus IR tracking signals.

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Description

The G72918 combines a broad 57 nm green passband with distinctive secondary NIR transmission characteristics. Delivering 94.6 % peak efficiency at 506 nm, this innovative filter enables dual-channel detection strategies that exploit long-wavelength transmission while maintaining clean visible-spectrum isolation.

Key Advantages

Bright Green Passband – 57 nm bandwidth spans 471-743 nm with > 94 % transmission, enabling multiwavelength collection strategies
Exploitable Secondary Window – Approximately 9 % transmission above 743 nm enables intentional multiplex detection when paired with NIR-sensitive optics
Hard-Oxide Ion-Assisted Coating – Superior mechanical and environmental durability for demanding laboratory and field applications
Near-Perfect Short-Wave Blocking – Blocks 99.53 % of UV light, protecting samples from photodamage while minimizing background autofluorescence
Versatile Substrate Selection – Available as round, square, or free-form optical blanks (5-450 mm) on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG (0.21-3.8 mm thick)

Typical Applications

Dual-Wavelength Sensing – Combine visible green detection with secondary NIR transmission for simultaneous multi-modal optical measurements
Multiplex Fluorescence Assays – Detect green-labeled analytes while capturing additional NIR-excited signals in coupled optical detection schemes
Hyperspectral Imaging – Integrate as primary green channel with secondary NIR reference for spectral unmixing and artifact correction
Natural Product Extraction – Optimize plant-based pigment separation using green excitation with NIR background monitoring for process control
Biosignal Monitoring – Enable wearable and implantable devices using green-labeled biomarkers with secondary thermal NIR reference

Choose G72918 for innovative dual-wavelength detection systems; we support rapid prototyping and production deployment of custom configurations.

FAQ

G72918 FAQ

What is G72918 and what is it used for?

G72918 is a 506 nm Bandpass Filter. The G72918 combines a broad 57 nm green passband with distinctive secondary NIR transmission characteristics. Delivering 94.6 % peak efficiency at 506 nm, this innovative filter enables dual-channel detection strategies that exploit long-wavelength transmission while maintaining clean visible-spectrum isolation. Common uses include Dual-Wavelength Sensing, Multiplex Fluorescence Assays, Hyperspectral Imaging, and Natural Product Extraction.

What are the key optical specs of G72918?

Key published specs for G72918 include Centre wavelength (CWL): 495.5 nm; Bandwidth (FWHM): 57 nm; Peak transmittance: ≥ 94.6 % T; Passband range: 467 – 524 nm; Edge steepness: ~15.5 nm (10 → 90 % per edge).

What applications is G72918 best suited for?

G72918 is commonly used for Dual-Wavelength Sensing, Multiplex Fluorescence Assays, Hyperspectral Imaging, and Natural Product Extraction. Dual-Wavelength Sensing - Combine visible green detection with secondary NIR transmission for simultaneous multi-modal optical measurements.

Can G72918 be customized for size, substrate, or coating requirements?

KUPO lists the construction for G72918 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include CWL shifting, bandwidth tuning, custom blocking ranges, rapid prototypes. Near-Perfect Short-Wave Blocking - Blocks 99.53 % of UV light, protecting samples from photodamage while minimizing background autofluorescence.

What should I know about angle of incidence and durability for G72918?

The published angle of incidence for G72918 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.