BH-A14 Blue Reflection Mirror
Wide-passband filter transmitting a broad NIR window (488 – 754 nm) with steep edges and deep blocking on both sides for clean spectral isolation.
- Passband: 488 – 754 nm
- Bandwidth (FWHM): ~620 nm
- Centre wavelength: ~790 nm (nominal)
- Passband transmittance: ≥ 88.5 % T (± 9.4 % ripple)
- Short-wave edge (T50): ≈ 480 nm, ~177 nm steepness
- Long-wave edge (T50): ≈ 1100 nm, ~20 nm steepness
- Short-wave blocking: OD ≥ 0.4 below 450 nm
- Long-wave blocking: OD ≥ 2.0 above 1130 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-A14 Bandpass Extended delivers Passband 488 – 754 nm, Bandwidth (FWHM) ~620 nm, and Centre wavelength ~790 nm (nominal).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Near-infrared imaging and sensing applications — including silicon-sensor camera systems, LIDAR receivers, and night-vision optics — where the wide NIR passband maximises signal collection across the sensor's peak sensitivity range
Description
The BH-A14 Blue Reflect Mirror (BRM) is a color-selective dichroic engineered to efficiently reflect blue light while transmitting green, red, and infrared wavelengths. With sustained >80 % transmission from 486-1200 nm (peak 97.9 % at 575 nm) and selective blue blocking (\<25 %), the BRM enables simultaneous blue illumination and multi-color detection across visible and infrared. Green transmission reaches 97 %, red transmission 92 %, and SWIR response extends to 81 %. The BRM functions as a primary dichroic mirror in laser confocal systems, enabling blue laser excitation with green-red-NIR detection without optical crosstalk.
Key Advantages
- Efficient Green-Red-NIR Pass-Band - 97.9 % peak transmission at 575 nm with Green: 97 %, Red: 92 %, SWIR: 81 % enables simultaneous multi-color detection across visible and infrared.
- Blue Wavelength Reflection - \<25 % blue transmission reflects 405-488 nm laser excitation away from detectors, enabling simultaneous excitation and detection without optical crosstalk.
- Broadband Detection Window - 714 nm transmission bandwidth (486-1200 nm) captures green, red, and infrared signals in single optical element for multi-parameter analysis.
- Hard-Oxide Ion-Assisted Coating - Multilayer hard-oxide design maintains dichroic performance under continuous laser illumination and thermal cycling in confocal systems.
- Custom Format Flexibility - Round, square, and free-form geometries from 5-450 mm with Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG substrate options.
Typical Applications
- Confocal Microscopy Dichroics - Primary dichroic for 405-488 nm laser lines, reflecting excitation light while transmitting green-red-NIR emissions to multi-detector arrays.
- Multi-Laser Fluorescence Systems - Combines blue excitation with detection of GFP, mCherry, and far-red signals in simultaneously excited multi-color imaging.
- Laser Beam Combining - Reflects blue and UV laser lines while combining with green-red beams on single specimen for complex multi-wavelength experiments.
- Flow Cytometry - Primary dichroic separating blue laser excitation from green-red-NIR detection in multi-parametric cell analysis systems.
- Spectroscopic Analysis - Enables blue laser excitation with broadband visible-NIR collection for Raman, fluorescence, and reflectance spectroscopy.
Integrate the BH-A14 Blue Reflect Mirror into your multi-color confocal system with rapid prototyping and production capability.
FAQ
BH-A14 FAQ
What is BH-A14 and what is it used for?
BH-A14 is a BRM - Blue Reflect Mirror. The BH-A14 Blue Reflect Mirror (BRM) is a color-selective dichroic engineered to efficiently reflect blue light while transmitting green, red, and infrared wavelengths. With sustained >80 % transmission from 486-1200 nm (peak 97.9 % at 575 nm) and selective blue blocking (<25 %), the BRM enables simultaneous blue illumination and multi-color detection across visible and infrared. Common uses include Confocal Microscopy Dichroics, Multi-Laser Fluorescence Systems, Laser Beam Combining, and Flow Cytometry.
What are the key optical specs of BH-A14?
Key published specs for BH-A14 include Passband: 488 – 754 nm; Bandwidth (FWHM): ~620 nm; Centre wavelength: ~790 nm (nominal); Passband transmittance: ≥ 88.5 % T (± 9.4 % ripple); Short-wave edge (T50): ≈ 480 nm, ~177 nm steepness.
What applications is BH-A14 best suited for?
BH-A14 is commonly used for Confocal Microscopy Dichroics, Multi-Laser Fluorescence Systems, Laser Beam Combining, and Flow Cytometry. Confocal Microscopy Dichroics - Primary dichroic for 405-488 nm laser lines, reflecting excitation light while transmitting green-red-NIR emissions to multi-detector arrays.
Can BH-A14 be customized for size, substrate, or coating requirements?
KUPO lists the construction for BH-A14 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 geometries 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-A14?
The published angle of incidence for BH-A14 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
