BH-A11 Blue Transmission Mirror
5-band multiband filter isolating UV (364 nm), Violet (432 nm), Near-IR (746 nm), Near-IR (782 nm), and NIR (966 nm) in a single optic — replacing multiple discrete filters for streamlined optical paths and reduced insertion loss.
- Band 1 — UV / 364 nm
- Centre / Range: 364 nm (362 – 367 nm)
- Bandwidth (FWHM): 5 nm
- Peak transmittance: ≥ 61.4 % T
- Band 2 — Violet / 432 nm
- Centre / Range: 432 nm (372 – 492 nm)
- Bandwidth (FWHM): 120 nm
- Peak transmittance: ≥ 96.8 % T
- Band 3 — Near-IR / 746 nm
- Centre / Range: 746 nm (738 – 753 nm)
- Bandwidth (FWHM): 15 nm
- Peak transmittance: ≥ 56.5 % T
- Band 4 — Near-IR / 782 nm
- Centre / Range: 782 nm (764 – 801 nm)
- Bandwidth (FWHM): 37 nm
- Peak transmittance: ≥ 60.6 % T
- Band 5 — NIR / 966 nm
- Centre / Range: 966 nm (831 – 1100 nm)
- Bandwidth (FWHM): 269 nm
- Peak transmittance: ≥ 75.6 % T
- Overall performance
- Inter-band blocking: OD ≥ 0.4 between passbands
- Out-of-band blocking: OD ≥ 0.3 (200 – 1100 nm excluding passbands)
- AOI: 0° (normal incidence); custom angles available
- Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
- Custom options: Band shifting, bandwidth tuning, additional bands, rapid prototypes
Learn more
BH-A11 Multiband delivers Centre / Range 364 nm (362 – 367 nm), Bandwidth (FWHM) 5 nm, and Peak transmittance ≥ 61.4 % T.
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Multi-spectral imaging systems that require simultaneous capture across visible and near-infrared channels — this 5-band design eliminates the need for a motorised filter wheel, reducing mechanical complexity and increasing acquisition speed
Description
The BH-A11 Blue Transmit Mirror (BTM) is a color-selective filter engineered to isolate blue light (387-500 nm, peak 96.8 % at 460 nm, average 86 %) while efficiently reflecting green and red wavelengths. This specialized color mirror enables blue-channel detection in multi-color systems by simultaneously blocking green (\<5 % at 500-600 nm: 1.4 %) and red (\<5 % at 600-700 nm: 4.1 %). Extended NIR transmission (51 %) provides additional design flexibility for systems combining blue detection with infrared diagnostics. The BH-A11 is essential for blue laser systems, quantum dots, DAPI and other blue fluorophores, and blue-light-based clinical treatments.
Key Advantages
- High Blue Transmission - 96.8 % peak at 460 nm with 86 % average across 387-500 nm ensures efficient blue fluorophore and laser signal delivery to detection optics.
- Complete Green Rejection - 1.4 % average transmission across 500-600 nm prevents green crosstalk, enabling simultaneous blue and green channel imaging without false signals.
- Red Wavelength Reflection - 4.1 % average transmission across 600-700 nm reflects red excitation light, allowing combined blue detection with red-light illumination.
- Hard-Oxide Ion-Assisted Coating - Multilayer hard-oxide design withstands UV blue laser irradiance and maintains spectral performance across thermal and environmental stress.
- 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 options.
Typical Applications
- DAPI Fluorescence Microscopy - Transmits 405 nm DAPI fluorophore blue emissions while blocking 405 nm excitation light and red auto-fluorescence, improving signal clarity.
- Blue Laser Detection - Couples 405-488 nm laser sources into detection pathways while rejecting green and red background light from competing fluorophores.
- Quantum Dot Imaging - Optimized for blue-emitting quantum dots (QD605, QD625), transmitting blue signal while suppressing green and red background fluorescence.
- Multi-Color Flow Cytometry - Blue channel detection in multiparametric cell analysis, isolating DAPI, Alexa 405, and Hoechst signals from competing fluorophores.
- Blue Light Therapy - Transmits 405-480 nm therapeutic blue light for photodynamic therapy, photoactivated drugs, and light-based antimicrobial treatment.
Deploy the BH-A11 Blue Transmit Mirror in your multi-color fluorescence system with rapid prototyping and full production capability.
FAQ
BH-A11 FAQ
What is BH-A11 and what is it used for?
BH-A11 is a BTM - Blue Transmit Mirror. The BH-A11 Blue Transmit Mirror (BTM) is a color-selective filter engineered to isolate blue light (387-500 nm, peak 96.8 % at 460 nm, average 86 %) while efficiently reflecting green and red wavelengths. This specialized color mirror enables blue-channel detection in multi-color systems by simultaneously blocking green (<5 % at 500-600 nm: 1.4 %) and red (<5 % at 600-700 nm: 4.1 %). Common uses include DAPI Fluorescence Microscopy, Blue Laser Detection, Quantum Dot Imaging, and Multi-Color Flow Cytometry.
What are the key optical specs of BH-A11?
Key published specs for BH-A11 include Centre / Range: 364 nm (362 – 367 nm); Bandwidth (FWHM): 5 nm; Peak transmittance: ≥ 61.4 % T; Centre / Range: 432 nm (372 – 492 nm); Bandwidth (FWHM): 120 nm.
What applications is BH-A11 best suited for?
BH-A11 is commonly used for DAPI Fluorescence Microscopy, Blue Laser Detection, Quantum Dot Imaging, and Multi-Color Flow Cytometry. DAPI Fluorescence Microscopy - Transmits 405 nm DAPI fluorophore blue emissions while blocking 405 nm excitation light and red auto-fluorescence, improving signal clarity.
Can BH-A11 be customized for size, substrate, or coating requirements?
KUPO lists the construction for BH-A11 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include Band shifting, bandwidth tuning, additional bands, 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 options.
What should I know about angle of incidence and durability for BH-A11?
The published angle of incidence for BH-A11 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
