BH-A09 Dichroic Beamsplitter / Red Reflector
Wide-passband filter transmitting a broad red window (582 – 748 nm) with steep edges and deep blocking on both sides for clean spectral isolation.
- Passband: 582 – 748 nm
- Bandwidth (FWHM): ~652 nm
- Centre wavelength: ~662 nm (nominal)
- Passband transmittance: ≥ 89.7 % T (± 9.6 % ripple)
- Short-wave edge (T50): ≈ 336 nm, ~282 nm steepness
- Long-wave edge (T50): ≈ 988 nm, ~352 nm steepness
- Short-wave blocking: OD ≥ 0.4 below 306 nm
- Long-wave blocking: OD ≥ 0.3 above 1018 nm
- AOI: 0° (normal incidence); custom angles available
- Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
- Custom options: Edge shifting, passband widening/narrowing, asymmetric blocking, rapid prototypes
Learn more
BH-A09 Bandpass Extended delivers Passband 582 – 748 nm, Bandwidth (FWHM) ~652 nm, and Centre wavelength ~662 nm (nominal).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Red-channel colour separation and Cy3/RFP fluorescence collection in microscopy and flow cytometry — the wide passband maximises signal collection while blocking adjacent green and NIR channels
Description
The BH-A09 RMR660 is a color-selective red mirror engineered to transmit the critical 660 nm deep-red laser and fluorophore wavelengths while efficiently reflecting shorter visible wavelengths. With peak transmission of 99.3 % at 680 nm and sustained >80 % transmission across the 575-756 nm red pass-band, the BH-A09 provides uncompromised photon delivery to red-sensitive detectors and fluorophore-bearing samples. Simultaneous blue blocking (\<5 % 400-525 nm) enables direct combination of red fluorophore detection with green-channel excitation without optical crosstalk. The BH-A09 is essential for multi-color fluorescence microscopy, 660 nm laser systems, and clinical diagnostics utilizing red fluorescent markers.
Key Advantages
- Peak 660nm Transmission - 99.3 % transmission at 680 nm with optimized response across 575-756 nm ensures maximum red fluorophore signal delivery to sensitive detectors.
- Complete Blue Rejection - \<5 % transmission at 400-525 nm blocks blue excitation light and prevents crosstalk between green and red detection channels.
- Extended Red Pass-Band - 181 nm transmission bandwidth enables capture of deep-red fluorophore spectra (Alexa Fluor 633, 647, 660, Texas Red X) and 650-670 nm laser lines.
- Hard-Oxide Ion-Assisted Coating - Durable multilayer design maintains spectral performance under high-intensity laser illumination, thermal cycling, and prolonged use in clinical instruments.
- Custom Format Flexibility - Round, square, and free-form formats from 5-450 mm with Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG substrate selections.
Typical Applications
- Multi-Color Fluorescence Microscopy - Separates 660 nm red channel from green and blue excitation, eliminating crosstalk and enabling simultaneous imaging of multiple fluorophores on single specimen.
- Flow Cytometry - Directs 650-660 nm red fluorophore signals to detection optics while blocking excitation laser light, improving signal purity in cell sorting applications.
- Clinical Diagnostic Imaging - Enables 650-660 nm red fluorescent marker detection in endoscopic, dermatologic, and ophthalmologic diagnostic systems.
- 650nm Laser Coupling - Optimized transmission for 650 nm diode lasers in fiber-coupled illumination systems, biosensing platforms, and laboratory research instruments.
- Photodynamic Therapy - Transmits 660 nm photosensitizer activation light while rejecting green excitation and ambient room light in clinical treatment systems.
Deploy the BH-A09 RMR660 red mirror in your multi-color fluorescence system with rapid prototyping and production capability.
FAQ
BH-A09 FAQ
What is BH-A09 and what is it used for?
BH-A09 is a RMR660 - Red Mirror at 660nm. The BH-A09 RMR660 is a color-selective red mirror engineered to transmit the critical 660 nm deep-red laser and fluorophore wavelengths while efficiently reflecting shorter visible wavelengths. With peak transmission of 99.3 % at 680 nm and sustained >80 % transmission across the 575-756 nm red pass-band, the BH-A09 provides uncompromised photon delivery to red-sensitive detectors and fluorophore-bearing samples. Common uses include Multi-Color Fluorescence Microscopy, Flow Cytometry, Clinical Diagnostic Imaging, and 650nm Laser Coupling.
What are the key optical specs of BH-A09?
Key published specs for BH-A09 include Passband: 582 – 748 nm; Bandwidth (FWHM): ~652 nm; Centre wavelength: ~662 nm (nominal); Passband transmittance: ≥ 89.7 % T (± 9.6 % ripple); Short-wave edge (T50): ≈ 336 nm, ~282 nm steepness.
What applications is BH-A09 best suited for?
BH-A09 is commonly used for Multi-Color Fluorescence Microscopy, Flow Cytometry, Clinical Diagnostic Imaging, and 650nm Laser Coupling. Multi-Color Fluorescence Microscopy - Separates 660 nm red channel from green and blue excitation, eliminating crosstalk and enabling simultaneous imaging of multiple fluorophores on single specimen.
Can BH-A09 be customized for size, substrate, or coating requirements?
KUPO lists the construction for BH-A09 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include Edge shifting, passband widening/narrowing, asymmetric blocking, rapid prototypes. Custom Format Flexibility - Round, square, and free-form formats from 5-450 mm with Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG substrate selections.
What should I know about angle of incidence and durability for BH-A09?
The published angle of incidence for BH-A09 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
