The 905nm Narrow Bandpass Optical Filteris designed for high-precision near-infrared
optical systems requiring controlled spectral transmission around the 905nm wavelength.
With a905nm center wavelength and 30nm FWHM bandwidth, the filter provides
a defined transmission band around the target wavelength.
TheOD4 blocking depthhelps suppress unwanted wavelengths outside the passband,
supporting improved spectral selectivity and reduced optical interference.
The filter uses a high-qualityoptical glass substratecombined
with an advanced multilayer reflective coating for stable and consistent optical performance.
Its spectral characteristics make it suitable for applications such asLiDAR,
distance measurement, NIR detection, machine vision and optical instruments.
Designed for optical systems operating around the905nm near-infrared wavelength.
The specified30nm FWHMprovides a controlled NIR transmission window around the 905nm center wavelength.
TheOD4 blocking depthprovides strong attenuation of applicable unwanted wavelengths outside the passband.
The multilayer coating is designed to provide high transmission around the target wavelength.
Advanced multilayer coating technology provides precise wavelength control and stable spectral performance.
The optical glass substrate provides high thermal and mechanical stability for integration into optical systems.
The coating structure is designed to maintain low optical loss within the specified passband.
Custom wavelengths, sizes, shapes and thicknesses are available for OEM and high-volume production.
| Parameter | Specification |
|---|---|
| Product Type | Narrow Bandpass Optical Filter |
| Center Wavelength | 905nm |
| FWHM | 30nm |
| Bandwidth | 30nm |
| Blocking Depth | OD4 |
| Blocking Range | Outside passband |
| Spectral Region | Near Infrared / NIR |
| Substrate | Optical Glass |
| Coating | Advanced Multilayer Reflective Optical Coating |
| Transmission | High transmission at center wavelength |
| Optical Loss | Low optical loss within passband |
| Optical Performance | High spectral accuracy and stability |
| Shape | Custom Available |
| Size | Custom Available |
| Thickness | Custom Available |
| Other Wavelengths | Available upon request |
| Application | LiDAR, Distance Measurement, NIR Sensing, Machine Vision, Optical Instruments |
The filter is centered at905nm, providing controlled wavelength selection for near-infrared optical systems.
The30nm FWHMbandwidth provides a defined spectral transmission region suitable for NIR detection and sensing applications.
OD4 blocking helps suppress unwanted optical energy outside the target passband and can reduce spectral interference.
The narrowband structure and out-of-band blocking can help reduce unwanted light reaching downstream optical detectors.
The precision multilayer reflective coating is designed for consistent spectral characteristics and stable optical performance.
The filter is suitable for systems where wavelength discrimination and repeatable optical filtering are important.
The 905nm filter can be integrated into905nm LiDAR optical systemswhen
the specified center wavelength, bandwidth and blocking performance match the system requirements.
Suitable for optical distance measurement systems using near-infrared sources and detectors.
Can be used in NIR sensing systems requiring controlled spectral transmission around 905nm.
Suitable for optical detection systems requiring suppression of unwanted wavelengths outside the target band.
Can be integrated into machine vision systems requiring NIR spectral selection.
Suitable for optical instruments requiring narrowband wavelength filtering and out-of-band suppression.
Can be considered for near-infrared imaging systems requiring a defined spectral transmission region.
Suitable for industrial inspection and optical measurement equipment using near-infrared illumination and detection.
We provide customized narrow bandpass optical filters for different NIR optical systems.
For an accurate quotation, please provide:
Center Wavelength + FWHM + OD/Blocking Requirement + Size + Thickness + Quantity + Application
For existing optical systems, customers can also provide anoptical curve, technical drawing or sample filterfor engineering evaluation.
A typical production workflow includes:
Optical Glass Selection → Cutting → Grinding → Polishing → Cleaning →
Multilayer Coating → Spectral Testing → Dimensional Inspection → Surface Inspection → Final QC → Protective Packaging
The manufacturing process can be adjusted according to customer optical and mechanical requirements.
Quality inspection can include:
Inspection criteria can be defined according to the customer's final optical specifications.
Each optical filter is individually protected against dust, scratches and mechanical damage.
Packaging solutions are available for:
Custom labeling and OEM packaging are also available.
The center wavelength is905nm.
The specified bandwidth is30nm FWHM.
OD4 represents an optical density level of 4 for the applicable blocking region,
indicating strong attenuation of unwanted out-of-band light.
The substrate isoptical glass.
The filter uses anadvanced multilayer reflective optical coating.
Yes. It is designed forhigh transmission around the 905nm center wavelength.
Yes. Other center wavelengths are available according to customer requirements.
Yes. Different FWHM requirements can be evaluated according to the optical system.
Yes. Custom sizes, shapes and thicknesses are supported.
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