BH-A16 Red Reflection Mirror
BH-A16 reflects saturated red (565 – 680 nm) at > 99 % while sending the full blue-green (≈ 400 – 550 nm) band cleanly through—perfect for RGB splitters, laser-phosphor engines, and AR combiners that demand sharp colour isolation.
- Red reflection: > 99 % R (< 1 % T) 565 – 680 nm
- B + G pass: > 95 % T 410 – 550 nm
- IR stop-bands: < 10 % T above 700 nm
- Edge steepness: < 10 nm 10–90 % transition
- Transmitted WFE: λ/4 P-V @ 632 nm
- Durability: MIL-M-13508C abrasion & adhesion
- Glass menu: Borofloat®, Eagle XG, D263 T, soda-lime • 5 – 450 mm • 0.21 – 3.8 mm
Learn more
Designed for 45 ° incidence, BH-A16 folds red light out of
laser-phosphor wheels, three-chip projection prisms, and colour-separation
cubes while letting blue and green primaries power straight through to the
integrator. A low-absorption IBS stack shrugs off > 20 kW h cm-2
CW RGB-laser flux without burn-in, and the edge drifts < ±6 nm between
0 ° and 55 ° AOI—ideal for telecentric or off-axis systems.
Popular uses • 3-LCD & DLP® combiners • laser-phosphor
colour wheels • AR / HUD prisms that inject red graphics
without blue-green ghosting • fluorescence epi paths that need to dump
rhodamine emission while passing FITC excitation.
Description
BH-A16 splits light at ~565 nm: blue-green (≈ 400 – 550 nm) sails through at > 95 % transmission, while everything long-ward of the edge is sent back toward your red channel. Two secondary stop-bands above 700 nm (< 10 % T) further suppress lamp/laser IR that robs contrast in projection or camera paths. We deposit the coating on low-warp glass that we custom cut from 5 mm to 450 mm (0.21 – 3.8 mm thick) in Borofloat®, Eagle XG, ultra-thin D263 T or soda-lime, so you can match thermal and weight targets without redesigning your mount.
Key advantages
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Clean colour separation – < 1 % T from 565 – 680 nm yields > 99 % reflection for saturated reds.
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High B+G throughput – > 95 % T 410 – 550 nm maximises luminous efficiency.
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Durable oxide stack – plasma-assisted film meets MIL-M-13508C abrasion and adhesion specs.
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λ/4 P-V transmitted WFE – preserves MTF in 4K/8K projection or machine-vision lenses.
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Low angular shift – edge moves < ±6 nm between 0 ° and 55 °, easing telecentric design.
Typical applications
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Three-chip DLP® & 3-LCD projectors – fold red away from the integrator while passing B+G.
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Laser phosphor engines – reflect 610–650 nm phosphor emission toward the colour wheel.
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Color-separation prisms & X-cubes – combine with blue/green mirrors for compact RGB combiners.
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AR waveguides & HUDs – inject red imagery without adding blue-green ghosting.
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Fluorescence epi illumination – dump rhodamine emission while delivering FITC excitation.
Need samples next week or high-volume lots next quarter? BH-A16 mirrors can be coated, diced and shipped to your exact print—fast.
