BH-N17 Broadband Notch Filter
Compact green notch with excellent passband transmission for bright optical systems.
- Notch centre: 530.1 nm
- Notch width (FWHM): 105.4 nm
- Notch depth: OD ≥ 2.1 (T < 0.768%)
- Passband transmittance: ≥ 88.1% T (outside notch region)
- Edge steepness: ~20.5 nm (90 → 10 % per edge)
- Passband recovery: Within 10 nm of notch edges
- AOI: 0° (normal incidence); custom angles available
- Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
- Custom options: Centre tuning, notch width adjustment, multi-notch designs, rapid prototypes
Learn more
BH-N17 Hybrid delivers Notch centre 530.1 nm, Notch width (FWHM) 105.4 nm, and Notch depth OD ≥ 2.1 (T < 0.768%).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Bright-field optical systems, high-intensity laser applications, illumination platforms, and instruments requiring minimal transmission loss.
Description
The BH-N17 provides specialized performance with a narrow 105 nm notch spanning 492-562 nm and 0.77 % depth at 524 nm. Achieving 90.6 % blue transmission and 92.6 % red-NIR transmission with 94.9 % peak efficiency, this filter excels in applications requiring tight spectral control and selective green wavelength rejection. Its design emphasizes precision wavelength discrimination while maintaining broad passband coverage.
Key Advantages
- Narrow Notch Specification - 105 nm blocking width provides precise green-yellow rejection without excessive passband compression
- Controlled Notch Depth - 0.77 % transmission at 524 nm achieves effective 532 nm laser suppression and green fluorescence blocking
- Extended Passband Preservation - Narrow design maximizes usable blue and red wavelength ranges for diverse fluorophore applications
- Hard-Oxide Ion-Assisted Durability - Premium multilayer coatings ensure long-term performance under thermal and environmental stress
- Flexible Format Options - Round, square, and custom free-form geometries on Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG
Typical Applications
- Raman Spectroscopy - Blocks 532 nm laser line while preserving broad Stokes and anti-Stokes Raman signal regions
- Laser Line Rejection - Provides selective suppression of specific green laser wavelengths in broadband applications
- Fluorescence Detection - Enables selective green suppression while preserving blue and red fluorophore detection
- Spectrometer Filtering - Offers precise wavelength discrimination in compact optical instrumentation
- Optical Multiplexing - Creates tight spectral bins for advanced wavelength separation algorithms
Prototyping in 2-3 weeks; production capability supports precision optical system development.
FAQ
BH-N17 FAQ
What is BH-N17 and what is it used for?
BH-N17 is a 477/583 nm Notch Filter. The BH-N17 provides specialized performance with a narrow 105 nm notch spanning 492-562 nm and 0.77 % depth at 524 nm. Achieving 90.6 % blue transmission and 92.6 % red-NIR transmission with 94.9 % peak efficiency, this filter excels in applications requiring tight spectral control and selective green wavelength rejection. Common uses include Raman Spectroscopy, Laser Line Rejection, Fluorescence Detection, and Spectrometer Filtering.
What are the key optical specs of BH-N17?
Key published specs for BH-N17 include Notch centre: 530.1 nm; Notch width (FWHM): 105.4 nm; Notch depth: OD ≥ 2.1 (T < 0.768%); Passband transmittance: ≥ 88.1% T (outside notch region); Edge steepness: ~20.5 nm (90 → 10 % per edge).
What applications is BH-N17 best suited for?
BH-N17 is commonly used for Raman Spectroscopy, Laser Line Rejection, Fluorescence Detection, and Spectrometer Filtering. Raman Spectroscopy - Blocks 532 nm laser line while preserving broad Stokes and anti-Stokes Raman signal regions.
Can BH-N17 be customized for size, substrate, or coating requirements?
KUPO lists the construction for BH-N17 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include Centre tuning, notch width adjustment, multi-notch designs, rapid prototypes. Flexible Format Options - Round, square, and custom free-form geometries on Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG.
What should I know about angle of incidence and durability for BH-N17?
The published angle of incidence for BH-N17 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
