G8916 Broad Bandpass Filter
Medium-band green filter (490 – 583 nm, > 90 % T) with sub-1 % leakage in UV/blue and red, and no appreciable IR tail.
- Green passband: 490 – 583 nm, > 90 % T
- UV/blue block: < 1 % T @ 400 – 465 nm
- Red block: < 1 % T @ 622 – 760 nm
- IR tail: < 5 % T beyond 760 nm
- Construction: Ion-assisted hard-oxide; 5 – 450 mm, 0.21 – 3.8 mm thick
- Custom options: Ripple flattening, AOI tuning, rapid prototypes
Learn more
G8916 delivers a broad, flat window around the peak human-eye response
while dumping spill on both sides. Transmission jumps above 90 % near
490 nm, stays there to ~583 nm, and collapses under one percent by
~622 nm. Below 465 nm it is also under one percent, save for a minor
< 8 % ripple near 393 nm that KUPO can flatten on request. Off-band
blocking continues out to 760 nm, where only a gentle tail stays below five
percent—keeping cameras, spectrometers, and audiences free of glare.
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 excitation, green-LED machine vision,
RGB laser/LED projection, discrete green channels in multispectral cameras,
saturated stage or architectural lighting, and AR/HUD waveguides that need bright
green injection without UV/IR heat.
Description
The G8916 represents the ultimate broadband green solution, delivering an exceptional 111 nm passband spanning cyan through yellow with 95.3 % peak transmission at 519 nm. This exceptionally wide filter combines extraordinary light-gathering capability with pristine blocking at both ends of the spectrum, making it ideal for applications demanding maximum green-spectrum collection.
Key Advantages
- Widest Bandpass Available – 111 nm passband spans 485-586 nm—the broadest green window available—with > 93 % average transmission throughout
- Exceptional Peak Efficiency – 95.3 % transmission at 519 nm represents class-leading performance for maximum photon collection
- Ultra-Clean Out-of-Band Rejection – Blocks 99.56 % of UV light and 99.23 % of red/NIR wavelengths—achieving pristine spectral purity at both extremes
- Hard-Oxide Ion-Assisted Coating – Premium durability across mechanical handling, environmental exposure, and extended operational cycles
- Complete Format Flexibility – Supplied as round, square, or custom free-form optical blanks (5-450 mm) on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG at your specified thickness (0.21-3.8 mm)
Typical Applications
- High-Sensitivity Imaging – Maximize photon collection in low-light imaging systems by accepting the entire green-to-yellow spectrum without spectral compromise
- Multi-Dye Fluorescence – Simultaneously detect GFP, FITC, Alexa 488, and yellow-shifted variants in single-filter optical paths
- Brightfield Microscopy – Achieve optimal contrast in transmitted-light imaging of biological samples across broad green spectrum
- Theatrical and Architectural Lighting – Create natural, saturated green colors from broadband sources with exceptional spectral consistency and brightness
- Environmental Monitoring – Integrate vegetation health assessment across broad green wavelengths for comprehensive optical signatures in remote sensing
Deploy G8916 for applications where photon collection and spectral breadth are paramount; rapid prototyping and high-volume production available.
FAQ
G8916 FAQ
What is G8916 and what is it used for?
G8916 is a 519 nm Bandpass Filter. The G8916 represents the ultimate broadband green solution, delivering an exceptional 111 nm passband spanning cyan through yellow with 95.3 % peak transmission at 519 nm. This exceptionally wide filter combines extraordinary light-gathering capability with pristine blocking at both ends of the spectrum, making it ideal for applications demanding maximum green-spectrum collection. Common uses include High-Sensitivity Imaging, Multi-Dye Fluorescence, Brightfield Microscopy, and Theatrical and Architectural Lighting.
What are the key optical specs of G8916?
Key published specs for G8916 include Centre wavelength (CWL): 534.5 nm; Bandwidth (FWHM): 111 nm; Peak transmittance: ≥ 95.3 % T; Passband range: 479 – 590 nm; Edge steepness: ~16.5 nm (10 → 90 % per edge).
What applications is G8916 best suited for?
G8916 is commonly used for High-Sensitivity Imaging, Multi-Dye Fluorescence, Brightfield Microscopy, and Theatrical and Architectural Lighting. High-Sensitivity Imaging - Maximize photon collection in low-light imaging systems by accepting the entire green-to-yellow spectrum without spectral compromise.
Can G8916 be customized for size, substrate, or coating requirements?
KUPO lists the construction for G8916 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. Complete Format Flexibility - Supplied as round, square, or custom free-form optical blanks (5-450 mm) on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG at your specified thickness (0.21-3.8 mm).
What should I know about angle of incidence and durability for G8916?
The published angle of incidence for G8916 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
