M79506 Broadband Notch Filter
Double-pass notch filter passing bright violet (395 – 445 nm) and rich red (630 – 750 nm) while plunging green-cyan light below 1 % for a vivid magenta spectrum.
- Violet passband: 395 – 445 nm, > 90 % T
- Deep notch: < 1 % T 470 – 600 nm
(valley ≈ 0.2 % T) - Red passband: 630 – 750 nm, 92 – 94 % T
- Edge steepness: ~15 nm 90 → 10 % transitions
- 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
M79506 transmits two bright windows—one in the near-UV/violet band and one
in the deep red—while driving the entire green–cyan band almost to zero.
Transmission exceeds 88 – 92 % from ~395 nm to 445 nm, drops below one
percent through ~470 nm – 600 nm, then climbs back above 90 % near
630 nm and rides 92 – 94 % out past 750 nm. Rugged ion-assisted
hard-oxide coatings shrug off heat, humidity, solvents, and repeated
wipe-downs. KUPO coats Borofloat®, soda-lime, Schott D263 T, or Corning
Eagle XG substrates in any outline—from 5 mm chips to 450 mm plates,
0.21 – 3.8 mm thick—and can ship prototypes in about two weeks.
Typical uses: violet-excite/red-detect fluorescence, magenta stage
lighting, UV + red machine-vision, green-band suppression in Raman or
multispectral sensors, and AR/HUD optics that need violet tracking plus
red graphics without mid-visible clutter.
Description
M79506 transmits two bright windows—one in the near-UV/violet range and one in the deep-red—while it drives the entire green–cyan band almost to zero. Transmission exceeds 88 – 92 % from about 395 nm to 445 nm, then falls below 1 % from roughly 470 nm to 600 nm. It climbs back above 90 % near 630 nm and stays at 92 – 94 % out past 750 nm before a gentle roll-off. The result is a vivid magenta spectrum that keeps violet excitation and red emission (or magenta lighting) intense while dumping mid-visible clutter.
Key advantages
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Deep 470 – 600 nm notch – < 1 % T suppresses green autofluorescence and ambient spill.
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High dual passbands – > 90 % T in 395 – 445 nm and 630 – 750 nm maximises violet sources and red detectors.
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Broad blocking floor – Mid-band floor down to ~0.2 % boosts signal-to-noise in demanding imaging tasks.
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Hard-oxide durability – Ion-assisted coating survives heat, humidity, solvents, and repeated wipe-downs.
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Tailor-made 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 glass.
Typical applications
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Fluorescence microscopy & cytometry – Pass violet excitation and red emission while silencing green background for cleaner contrast.
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Raman & multispectral sensors – Block 532 nm or 561 nm laser lines yet keep violet and red Stokes/anti-Stokes bands.
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Stage & architectural lighting – Produce saturated magenta washes (violet + red) with virtually no 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 in days or volume production next quarter? M79506 filters can be coated, diced, and shipped to your exact specification—fast.
