G2810 Broad Bandpass Filter
Emerald-green filter (520 – 550 nm, > 90 % T) with < 1 % UV/blue & red leakage and only a mild < 12 % IR tail beyond 760 nm.
- Green passband: 520 – 550 nm, > 90 % T
- UV/blue block: < 1 % T @ 390 – 480 nm
- Red block: < 1 % T @ 600 – 745 nm
- IR tail: < 12 % T @ 780 nm
- Construction: Ion-assisted hard-oxide; 5 – 450 mm, 0.21 – 3.8 mm thick
- Custom options: AOI tuning, ripple flattening, rapid prototypes
Learn more
G2810 isolates a clean slice of emerald-green while driving nearly
every other wavelength into the noise. Transmission breaks 90 % near 520 nm,
stays above that threshold to ~550 nm, and drops below one percent by ~600 nm.
UV/blue energy remains near zero (aside from a modest ~10 % ripple around
390 nm that can be flattened on request), and yellow-to-red light stays
suppressed out to the near-IR; only a gentle tail climbs toward ~12 % 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 excitation, green-LED machine
vision, RGB laser/LED projection, discrete green channels in multispectral
cameras, saturated stage beams, and AR waveguides that need bright green
injection free of UV/IR heat.
Description
The G2810 delivers exceptional green-to-yellow transmission with a broad 54 nm passband and 94.2 % peak efficiency. This clean-blocking filter achieves remarkable out-of-band rejection while maintaining the spectral breadth necessary for illumination-intensive applications.
Key Advantages
- Broad Passband Efficiency – 54 nm bandwidth spans 513-557 nm with > 91 % average transmission for maximum light collection
- Ultra-Low Side-Band Leakage – Blocks 99.17 % of UV light and 98.7 % of red/NIR light, achieving exceptional spectral purity
- Hard-Oxide Ion-Assisted Coating – Superior scratch and moisture resistance ensures long-term performance in laboratory and industrial environments
- Peak Transmission Excellence – 94.2 % efficiency at 544 nm maximizes sensitivity in dim-light detection and minimizes required illumination intensity
- Standard and Custom Geometries – 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 thickness)
Typical Applications
- Brightfield Microscopy – Enhance contrast in transmitted-light imaging where green wavelengths provide optimal visibility of biological specimens
- Photodynamic Therapy – Enable precise wavelength selection for photosensitizer activation in clinical and research oncology applications
- Flow Cytometry Systems – Isolate green fluorescence from GFP-labeled cells while maintaining excellent background rejection for quantitative measurements
- Laser Pointer Applications – Filter 532 nm Nd:YAG-pumped wavelengths for consumer and professional laser pointer systems with superior color saturation
- Architectural Illumination – Create vibrant green color in accent and feature lighting with broad spectral content supporting consistent appearance under varied viewing conditions
Deploy G2810 filters in both research and production environments; we provide rapid prototyping support and scaled manufacturing capacity.
FAQ
G2810 FAQ
What is G2810 and what is it used for?
G2810 is a 544 nm Bandpass Filter. The G2810 delivers exceptional green-to-yellow transmission with a broad 54 nm passband and 94.2 % peak efficiency. This clean-blocking filter achieves remarkable out-of-band rejection while maintaining the spectral breadth necessary for illumination-intensive applications. Common uses include Brightfield Microscopy, Photodynamic Therapy, Flow Cytometry Systems, and Laser Pointer Applications.
What are the key optical specs of G2810?
Key published specs for G2810 include Centre wavelength (CWL): 535 nm; Bandwidth (FWHM): 54 nm; Peak transmittance: ≥ 94.2 % T; Passband range: 508 – 562 nm; Edge steepness: ~18 nm (10 → 90 % per edge).
What applications is G2810 best suited for?
G2810 is commonly used for Brightfield Microscopy, Photodynamic Therapy, Flow Cytometry Systems, and Laser Pointer Applications. Brightfield Microscopy - Enhance contrast in transmitted-light imaging where green wavelengths provide optimal visibility of biological specimens.
Can G2810 be customized for size, substrate, or coating requirements?
KUPO lists the construction for G2810 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. Standard and Custom Geometries - 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 thickness).
What should I know about angle of incidence and durability for G2810?
The published angle of incidence for G2810 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
