M79508 Broadband Notch Filter
Compact green notch filter with tight control and excellent passband transmission.
- Notch centre: 529.0 nm
- Notch width (FWHM): 142.4 nm
- Notch depth: OD ≥ 2.7 (T < 0.203%)
- Passband transmittance: ≥ 88.6% T (outside notch region)
- Edge steepness: ~22 nm (90 → 10 % per edge)
- Passband recovery: Within 13 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
M79508 Hybrid delivers Notch centre 529.0 nm, Notch width (FWHM) 142.4 nm, and Notch depth OD ≥ 2.7 (T < 0.203%).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Confocal microscopy, laser line rejection, optical quality assurance, and spectroscopic instruments requiring selective green filtering.
Description
The M79508 represents a precision solution for applications requiring a narrow 142 nm notch with maintained transmission efficiency. Operating with 0.2 % depth at 517 nm while blocking 472-580 nm, this filter achieves 91.1 % blue transmission and 93.5 % red-NIR transmission. Peak transmission of 95.6 % makes it well-suited for compact optical systems where space constraints demand minimal filter count while maintaining demanding rejection specifications.
Key Advantages
- Narrow Notch Width - 142 nm blocking band minimizes passband overlap while providing effective mid-visible rejection
- Low Notch Depth - 0.2 % transmission at 517 nm efficiently suppresses green fluorescence and green laser scatter
- Durable Ion-Assisted Coatings - Hard-oxide multilayer design withstands extended operational lifespans in demanding laboratory environments
- Comprehensive Customization Options - Round, square, and free-form geometries available on Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG
- Consistent Peak Transmission - 95.6 % efficiency across both passbands minimizes signal loss in sensitive detection systems
Typical Applications
- Flow Cytometry - Separates violet and blue excitation photons from red fluorescence in high-throughput cell sorting
- Confocal Microscopy - Provides clean spectral separation in 405/532 dual-laser scanning systems
- Spectral Unmixing - Enables computational spectral separation in multispectral fluorescence microscopy
- Laser Safety Applications - Blocks green laser scatter while transmitting biological signal across separated wavelength regions
- Optical Sensor Integration - Provides compact wavelength discrimination in miniaturized portable instrumentation
Rapid prototyping in 2-3 weeks; production capable of supporting research initiatives and commercial product development.
FAQ
M79508 FAQ
What is M79508 and what is it used for?
M79508 is a 458/600 nm Notch Filter. The M79508 represents a precision solution for applications requiring a narrow 142 nm notch with maintained transmission efficiency. Operating with 0.2 % depth at 517 nm while blocking 472-580 nm, this filter achieves 91.1 % blue transmission and 93.5 % red-NIR transmission. Common uses include Flow Cytometry, Confocal Microscopy, Spectral Unmixing, and Laser Safety Applications.
What are the key optical specs of M79508?
Key published specs for M79508 include Notch centre: 529.0 nm; Notch width (FWHM): 142.4 nm; Notch depth: OD ≥ 2.7 (T < 0.203%); Passband transmittance: ≥ 88.6% T (outside notch region); Edge steepness: ~22 nm (90 → 10 % per edge).
What applications is M79508 best suited for?
M79508 is commonly used for Flow Cytometry, Confocal Microscopy, Spectral Unmixing, and Laser Safety Applications. Flow Cytometry - Separates violet and blue excitation photons from red fluorescence in high-throughput cell sorting.
Can M79508 be customized for size, substrate, or coating requirements?
KUPO lists the construction for M79508 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. Comprehensive Customization Options - Round, square, and free-form geometries available on Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG.
What should I know about angle of incidence and durability for M79508?
The published angle of incidence for M79508 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
