C11514 Shortpass Filter
Short-pass filter passing > 90 % in the 410 – 540 nm band while crushing mid-VIS and NIR light beyond 560 nm for pure, cool illumination.
- Blue passband: 410 – 540 nm, 92 – 94 % T
- Cutoff (T50): ~570 nm
- Edge steepness: ≈ 10 nm 90 → 10 % transition
- Blocking band: < 0.5 % T 625 – 740 nm
- Construction: Ion-assisted hard-oxide dielectric; 5 – 450 mm custom shapes
- Custom options: Edge shifts, ripple smoothing, 45° AOI, large plates
Learn more
C11514 delivers a bright blue-cyan band while stopping almost everything
from yellow through infrared. Transmission exceeds 90 % by 410 nm and
stays flat (≈ 92–94 %) to ~540 nm. Just after 560 nm the curve plunges
below one percent and hugs the baseline past 740 nm, so virtually no
green, red, or IR leaks through. Ion-assisted hard-oxide coatings shrug
off heat, humidity, solvents, and frequent cleaning, and KUPO can shift
edges, flatten ripples, supply 45° AOI versions, or cut large plates in
about two weeks.
Typical uses: stage / architectural lighting, fluorescence
microscopes & cytometers, machine-vision illumination, blue-laser
lithography & curing, and AR/VR waveguides needing vivid blue graphics
without green-red bleed.
Description
C11514 delivers a bright blue-cyan band while stopping almost everything from yellow through infrared. Transmission is above 90 % by 410 nm and stays flat—roughly 92–94 %—up to about 540 nm. Just after 610 nm the curve plunges below 1 % and hugs the baseline out past 740 nm, so virtually no green, red, or IR leaks through.
Key advantages
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High blue throughput – >90 % T between 410 nm and 540 nm for LEDs, lasers, or fluorescence lamps.
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Sharp 560 nm cutoff – ~10 nm edge cleanly splits blue from yellow-red, preserving colour purity.
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Deep blocking band – <0.5 % T from 625 nm to 740 nm keeps sensors quiet and removes stage heat.
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Rugged hard-oxide coating – Handles heat, humidity, solvents, and frequent cleaning.
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Fast custom tweaks – Edge shifts, ripple smoothing, 45 ° AOI versions, and large plates (up to 300 mm) in about two weeks.
Typical applications
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Stage / architectural lighting – Drop into ellipsoidals or PARs for vivid ice-blue washes without red heat; cuts gel loads and extends lamp life.
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Fluorescence microscopes & cytometers – Excite CFP/FITC dyes while blocking visible emissions for cleaner detection.
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Machine-vision illumination – Pair with 450 nm LED bars to boost contrast on plastics, pills, or security inks.
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Blue-laser lithography & curing – Pass 405–450 nm lines for photoresists while stopping red/IR that can warp substrates.
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AR / VR waveguides – Inject sharp blue graphics without leaking into green-red channels.
Need tiny chips, odd shapes, or high-volume orders? KUPO Optics prototypes and ships C11514 in sizes from 10 mm chips to full plates—fast.
