M79502 Broadband Notch Filter
Deep notch suppression of green-yellow light for demanding optical applications requiring ultra-low transmission.
- Notch centre: 532.7 nm
- Notch width (FWHM): 199.3 nm
- Notch depth: OD ≥ 5.0 (T < 0.001%)
- Passband transmittance: ≥ 87.0% T (outside notch region)
- Edge steepness: ~23.5 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
M79502 Hybrid delivers Notch centre 532.7 nm, Notch width (FWHM) 199.3 nm, and Notch depth OD ≥ 5.0 (T < 0.001%).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Laser diagnostic systems, high-sensitivity spectroscopy, advanced microscopy platforms, and instruments requiring maximum green-yellow rejection.
Description
The M79502 represents a precision solution for systems demanding near-zero notch depth and maximum passband transmission. This filter achieves approximately 0 % transmission at 523 nm while sustaining 88.9 % in the blue region and 93.2 % in the red-NIR band. With a 199 nm notch spanning 445-605 nm, it effectively isolates green and yellow wavelengths for applications requiring minimal spectral overlap between detection channels.
Key Advantages
- Minimal Notch Depth - Approximately 0 % transmission at peak absorption eliminates artifacts from residual green light leakage
- Extended Blue Passband - 387-429 nm transmission at 88.9 % captures shorter wavelengths for violet and early-blue fluorophore detection
- Ion-Assisted Deposition - Hard-oxide multilayer coatings provide robust mechanical durability and long-term environmental stability
- Custom Substrate Options - Supplied on round, square, or free-form substrates in Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG
- Broad Red Passband - 641-771 nm transmission supports detection of deep-red and near-infrared labels in diverse assay platforms
Typical Applications
- Confocal Microscopy - Separates blue excitation photons from red emission in high-NA objectives
- Machine Vision Inspection - Distinguishes color features in industrial quality control by blocking green channel interference
- Photoluminescence Detection - Isolates blue-excited red phosphorescence from environmental green ambient light
- AR/HUD Display Filtering - Creates magenta-dominant optical channels for wearable display architectures
- Spectral Sorting - Enables optical beam combiners and dichroic replacements in compact imaging modules
Rapid prototyping in 2-3 weeks; production capacity accommodates custom coatings and substrate specifications with consistent performance.
FAQ
M79502 FAQ
What is M79502 and what is it used for?
M79502 is a 433/632 nm Notch Filter. The M79502 represents a precision solution for systems demanding near-zero notch depth and maximum passband transmission. This filter achieves approximately 0 % transmission at 523 nm while sustaining 88.9 % in the blue region and 93.2 % in the red-NIR band. Common uses include Confocal Microscopy, Machine Vision Inspection, Photoluminescence Detection, and AR/HUD Display Filtering.
What are the key optical specs of M79502?
Key published specs for M79502 include Notch centre: 532.7 nm; Notch width (FWHM): 199.3 nm; Notch depth: OD ≥ 5.0 (T < 0.001%); Passband transmittance: ≥ 87.0% T (outside notch region); Edge steepness: ~23.5 nm (90 → 10 % per edge).
What applications is M79502 best suited for?
M79502 is commonly used for Confocal Microscopy, Machine Vision Inspection, Photoluminescence Detection, and AR/HUD Display Filtering. Confocal Microscopy - Separates blue excitation photons from red emission in high-NA objectives.
Can M79502 be customized for size, substrate, or coating requirements?
KUPO lists the construction for M79502 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. Custom Substrate Options - Supplied on round, square, or free-form substrates in Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG.
What should I know about angle of incidence and durability for M79502?
The published angle of incidence for M79502 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
