BMS-001 Beam Splitter
BMS-001 is a broadband, colour-neutral VIS beamsplitter (≈T80/R20). It rises steeply out of the UV, then holds a high, flat passband at ~80–84 % T from ~400–730 nm, tapering gently to ~79–80 % by ~800 nm—yielding a bright, true-colour transmit path with a clean ~20 % reflection for monitoring or feedback.
- Passband: ~400 – 730 nm @ ~80–84 % T; gentle roll to ~79–80 % by ~800 nm
- VIS split ratio: ~80 % T / ~20 % R (neutral, low ripple)
- UV behaviour: Strong suppression < ~350–360 nm; steep turn-on ~360–380 nm
- Spectral flatness: Low ripple across VIS for easy colourimetry & exposure matching
- Thermal profile: High-T with mild long-wave tilt maintains brightness and eases heat load
- Construction & format: Hard dielectric on Borofloat®, Eagle XG, D263 T, or soda-lime; 5–450 mm • 0.21–3.8 mm; options: rear-surface AR & slight wedge
Learn more
The neutral high-throughput split of BMS-001 keeps both paths colour-honest with minimal re-balance. A steep UV cut reduces fluorescence and sensor haze, while the smooth visible response simplifies colorimetry and machine-vision thresholds. The mild long-wave taper helps manage thermal load in light engines and microscopes without sacrificing image brightness.
Typical applications • Machine-vision taps (sample ~20 % for inspection/recording) • Optical viewfinders, director’s feeds & dual-sensor capture without colour bias • Projector/light-engine power/colour feedback with minimal loss • Microscopy/biomedical epi-illumination pick-offs • Metrology & alignment (constant-ratio beam pick-offs and diagnostics).
Typical spectral behaviour (T-path) — 400–730 nm: ~80–84 % T (flat, low ripple) • 730–800 nm: gentle roll to ~79–80 % T • < ~350–360 nm: strong UV suppression.
Need test chips tomorrow or thousands next quarter? BMS-001 beamsplitters are coated and cut-to-size (including dicing) to your exact spec—fast.
Description
BMS-001 is a broadband, colour-neutral VIS beamsplitter (≈ T80/R20). It rises steeply out of the UV, then holds a high, flat passband at ~80–84% transmission from ~400–730 nm, tapering gently to ~79–80% T by ~800 nm. You get a bright, true-colour transmit path with a clean ~20% reflection for monitoring or feedback.
Key advantages
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High-throughput, neutral split – ~T80/R20 across the visible keeps both paths colour-honest with minimal rebalance.
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Strong UV suppression – rapid turn-on around ~360–380 nm trims deep-UV, reducing fluorescence and sensor haze.
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Low ripple across VIS – smooth spectrum simplifies colourimetry, exposure matching and machine-vision thresholds.
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Thermal-friendly – high T with mild long-wave tilt keeps image brightness while easing heat load.
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Rugged dielectric stack – abrasion and humidity resistant for stage, field and lab environments.
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Made to fit – choose Borofloat®, Eagle XG, or D263 T (0.21–3.8 mm) for duty up to ~450 °C; soda-lime for ≤150 °C. Custom sizes 5–450 mm; options include rear-surface AR and a slight wedge to suppress ghosts.
Typical applications
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Machine-vision taps – sample ~20% for inspection/recording while keeping the primary path bright.
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Cameras & cinema – optical viewfinders, director’s feeds, dual-sensor capture without colour bias.
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Projectors & light engines – stable power/colour feedback with minimal loss.
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Microscopy & biomedical – epi-illumination pick-offs with neutral colour in both paths.
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Metrology & alignment – constant-ratio beam pick-offs and diagnostics.
Typical spectral behaviour (T-path)
400–730 nm: ~80–84% T (flat, low ripple) · 730–800 nm: gentle roll to ~79–80% T · <~350–360 nm: strong UV suppression.
Need test chips tomorrow or thousands next quarter? BMS-001 beamsplitters are coated and cut-to-size (including dicing) to your exact spec—fast.
