O16412 Longpass Filter
Deliver optimal far-red and infrared transmission while blocking all visible light with high optical density.
- Passband: 612 – 780 nm, 90.9 – 95.2 % T (± 2.1 % ripple)
- Cut-on (T50): ≈ 599 nm
- Edge steepness: ~31 nm (10 → 90 % transition)
- Blocking: < 0.99 % T below 551 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
O16412 Hybrid delivers Passband 612 – 780 nm, 90.9 – 95.2 % T (± 2.1 % ripple), Cut-on (T50) ≈ 599 nm, and Edge steepness ~31 nm (10 → 90 % transition).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Cy5, Alexa 647, and far-red fluorescence detection, deep red imaging in multiplexed assays, infrared sensor systems, and NIR spectroscopy with visible-light rejection.
Description
O16412 drops transmission to <1 % all the way to about 560 nm, passes the 50 % mark near 595 nm, clears 90 % by roughly 610 nm, and then rides a 92–94 % plateau out beyond 770 nm with ripple held to ±2–3 %. The profile is ideal for warming LED or laser sources, capturing orange-to-red fluorescence, or removing cyan glare from machine-vision scenes.
Key advantages
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Reliable cyan cut-on – 50 % wavelength ≈ 595 nm; < 1 % T maintained through 560 nm to minimise blue/green leakage.
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High, flat passband – 92–94 % T from ~610 nm to 770 nm keeps luminance and hue stable.
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Hard-oxide durability – Ion-assisted layers tolerate heat, humidity, solvents, and repeated cleaning.
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Format flexibility – Round, square, or custom shapes from 5 mm to 450 mm, thickness 0.21–3.8 mm, on Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG glass.
Typical applications
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LED colour tuning – Remove cool spikes in white or RGB fixtures to create warm, amber-rich ambience.
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Fluorescence emission – Collect orange/red probes (Cy3, mCherry, Texas Red) while blocking cyan excitation.
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Machine vision – Strip cyan reflections from shiny parts while keeping the red channel bright for defect detection.
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Photography & cinema – Warm daylight LED panels toward a tungsten look without gels.
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AR / HUD optics – Inject orange-to-red graphics cleanly, with negligible blue-green bleed toward the viewer.
Need quick prototypes or high-volume supply? O16412 filters can be coated, diced, and shipped to your exact specifications—fast.
FAQ
O16412 FAQ
What is O16412 and what is it used for?
O16412 is a 600 nm Longpass Filter. The O16412 passes the red and near-infrared spectrum with its 50 % cut-on measured at 598.6 nm. The passband runs from 607 to 780 nm with average transmission exceeding 94 %, peaking at 95.2 % near 702 nm. Common uses include Red fluorescence collection, NIR machine vision, Blood oxygenation analysis, and Astronomical red filtering.
What are the key optical specs of O16412?
Key published specs for O16412 include Passband: 612 – 780 nm, 90.9 – 95.2 % T (± 2.1 % ripple); Cut-on (T50): ≈ 599 nm; Edge steepness: ~31 nm (10 → 90 % transition); Blocking: < 0.99 % T below 551 nm (OD ≥ 2); AOI: 0° (normal incidence); custom angles available.
What applications is O16412 best suited for?
O16412 is commonly used for Red fluorescence collection, NIR machine vision, Blood oxygenation analysis, and Astronomical red filtering. Red fluorescence collection - Passes Texas Red, mCherry, and Cy5 emission while blocking all common excitation wavelengths below 600 nm.
Can O16412 be customized for size, substrate, or coating requirements?
KUPO lists the construction for O16412 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 O16412?
The published angle of incidence for O16412 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
