M79516 Broadband Notch Filter
Double-pass notch filter passing vivid violet (400 – 465 nm) and deep red (630 – 760 nm) while plunging green-cyan light below 1 % for a crisp magenta spectrum.
- Violet passband: > 90 % T @ 400 – 465 nm
- Deep notch: < 1 % T @ 480 – 595 nm
valley ≈ 0.2 % T - Red passband: 630 – 760 nm, 92 – 94 % T
- IR roll-off: Gentle decline beyond ~760 nm limits stray IR
- Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
- Custom options: Ripple smoothing, AOI tuning, rapid prototypes
Learn more
M79516 routes two bright passbands—one in the near-UV/violet
(≈ 400 – 465 nm) and one in the deep red (≈ 630 – 760 nm)—while forcing the
entire green-cyan band down to detector noise. Transmission peaks near 93 % across
violet, drops below 1 % from ~480 nm to 595 nm, then rebounds past 90 % near 630 nm
and rides 92 – 94 % to ~760 nm before a controlled roll-off that reins in excess NIR.
KUPO coats Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG substrates
in 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: violet-excite/red-detect fluorescence, magenta stage lighting,
UV + red machine-vision illumination, green-band suppression in Raman or multispectral
sensors, and AR/HUD optics needing violet tracking plus red graphics without mid-visible clutter.
Description
M79516 routes two bright passbands—one in the near-UV/violet (≈ 400 – 465 nm) and another in the deep-red (≈ 630 – 760 nm)—while plunging the whole green-cyan zone to instrument noise. Transmission peaks around 93 % across the violet window, collapses below 1 % from roughly 480 nm to 595 nm, then rebounds past 90 % by ~630 nm and cruises at 92 – 94 % until about 760 nm. Beyond that, it tapers smoothly toward the near-IR. The spectrum yields a vivid magenta channel with mid-visible clutter cleanly suppressed.
Key advantages
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Deep 480 – 595 nm notch – < 1 % T scrubs green autofluorescence and ambient spill.
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High dual passbands – > 90 % T in 400 – 465 nm and 630 – 760 nm keeps violet excitation and red detection bright.
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Gentle red roll-off – Controlled decline beyond ~760 nm limits stray IR while preserving deep-red signal.
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Hard-oxide durability – Ion-assisted layers survive heat, humidity, solvents, and repeated cleaning.
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Custom formats – Round, square, or free-form blanks from 5 mm to 450 mm, 0.21 – 3.8 mm thick, on Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG glass.
Typical applications
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Fluorescence microscopy & flow cytometry – Pass violet excitation and red emission while muting green background for sharper images.
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Raman & multispectral sensors – Block 532 nm / 561 nm laser lines yet keep violet and red Stokes or anti-Stokes bands.
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Stage & architectural lighting – Create saturated magenta washes (violet + red) with negligible green spill.
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Machine-vision systems – Combine UV crack detection with red contour lighting, eliminating mid-band reflections.
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AR / HUD optics – Inject violet tracking beams and red graphics while keeping the central visible band dark to the eye.
Need prototypes fast or production volumes next quarter? M79516 filters can be coated, diced, and shipped to match your exact specification—quickly.
