O2210 Longpass Filter
Transmit red and near-infrared light with exceptional blocking of all wavelengths below 534 nm.
- Passband: 593 – 780 nm, 90.3 – 95.4 % T (± 2.6 % ripple)
- Cut-on (T50): ≈ 581 nm
- Edge steepness: ~30 nm (10 → 90 % transition)
- Blocking: < 1.0 % T below 534 nm (OD ≥ 2)
- AOI: 0° (normal incidence); custom angles available
- Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
- Custom options: Edge tuning, ripple smoothing, 45° AOI, rapid prototypes
Learn more
O2210 Hybrid delivers Passband 593 – 780 nm, 90.3 – 95.4 % T (± 2.6 % ripple), Cut-on (T50) ≈ 581 nm, and Edge steepness ~30 nm (10 → 90 % transition).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Deep red LED and laser filtering, Cy5 and far-red fluorescence, infrared camera systems, red-channel isolation in multiplexed imaging, and near-IR spectroscopy applications.
Description
The O2210 passes the orange-through-NIR spectrum with its 50 % cut-on measured at 580.8 nm. Transmission peaks at 95.4 % near 681 nm, averaging above 94 % from 589 to 780 nm. The blocking region suppresses UV through green with average transmission under 0.5 % from 380 to 555 nm. The transition is steep, climbing from < 5 % at 565 nm to > 80 % at 589 nm in just 24 nm. This positions the O2210 precisely at the yellow-orange boundary.
Key Advantages
- 581 nm cut-on at the orange boundary - T50 % at 580.8 nm provides a natural division between warm orange-red and the cool-visible spectrum.
- 94.6 % average with 95.4 % peak - Flat passband spanning 190 nm from orange through NIR with minimal ripple.
- OD 2+ blocking to 555 nm - Deep rejection of UV through green averaging under 0.5 % ensures zero cool-tone leakage.
- Hard-oxide durability - Ion-assisted sputtered coating withstands thermal stress, humidity, solvents, and cleaning.
- Custom formats - Round, square, or free-form blanks from 5 mm to 450 mm, thickness 0.21-3.8 mm, on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG substrates.
Typical Applications
- Sodium D-line isolation - Passes the 589 nm sodium doublet and all longer wavelengths for atmospheric lidar and flame analysis.
- Red/NIR fluorescence collection - Collects emission from Cy3, TRITC, Texas Red, and mCherry while blocking green excitation.
- Color-temperature correction - Strips cool blue-green content from mixed-source illumination to produce warm-toned imaging conditions.
- Security & surveillance imaging - Passes orange-to-NIR illumination for low-light and covert NIR imaging while suppressing visible light sources.
- Stage lighting - Creates warm amber and red washes with zero green or blue spill for theatrical and concert designs.
Need the O2210 sized for your system? KUPO Optics delivers prototypes in days and scales to volume - contact us.
FAQ
O2210 FAQ
What is O2210 and what is it used for?
O2210 is a 580 nm Longpass Filter. The O2210 passes the orange-through-NIR spectrum with its 50 % cut-on measured at 580.8 nm. Transmission peaks at 95.4 % near 681 nm, averaging above 94 % from 589 to 780 nm. Common uses include Sodium D-line isolation, Red/NIR fluorescence collection, Color-temperature correction, and Security & surveillance imaging.
What are the key optical specs of O2210?
Key published specs for O2210 include Passband: 593 – 780 nm, 90.3 – 95.4 % T (± 2.6 % ripple); Cut-on (T50): ≈ 581 nm; Edge steepness: ~30 nm (10 → 90 % transition); Blocking: < 1.0 % T below 534 nm (OD ≥ 2); AOI: 0° (normal incidence); custom angles available.
What applications is O2210 best suited for?
O2210 is commonly used for Sodium D-line isolation, Red/NIR fluorescence collection, Color-temperature correction, and Security & surveillance imaging. Sodium D-line isolation - Passes the 589 nm sodium doublet and all longer wavelengths for atmospheric lidar and flame analysis.
Can O2210 be customized for size, substrate, or coating requirements?
KUPO lists the construction for O2210 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include Edge tuning, ripple smoothing, 45° AOI, rapid prototypes. Custom formats - Round, square, or free-form blanks from 5 mm to 450 mm, thickness 0.21-3.8 mm, on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG substrates.
What should I know about angle of incidence and durability for O2210?
The published angle of incidence for O2210 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
