25.4mm 400–1100nm Neutral Density Reflective Optical Filter
The Ø25.4mm 400–1100nm Neutral Density (ND) Reflective Optical Filter
is a broadband optical attenuation component designed to reduce
light intensity across a wide spectral range from 400nm to 1100nm.
With an optical glass substrate and multilayer reflective coating,
the filter provides controlled optical attenuation forvisible and near-infrared applications.
Its standard25.4mm diametermakes it suitable for many
common optical mounts and laboratory optical systems.
The filter covers a wide wavelength range from:
400nm–1100nm
This extends from the visible spectrum into the near-infrared region.
It can therefore be used in optical systems requiring broadband
attenuation rather than wavelength-specific narrowband filtering.
The primary function of a neutral density filter is to reduce optical intensity
while maintaining controlled transmission characteristics across its specified wavelength range.
This makes it useful for:
The filter uses amultilayer reflective coatingdesigned for broadband optical attenuation.
The reflective structure allows unwanted optical
energy to be reduced through reflection rather than relying solely on absorption.
This can be advantageous in optical systems where thermal
loading and optical stability are important considerations.
The filter has a standard diameter of:
Ø25.4mm
This compact round format is suitable for integration into optical mounts, laboratory systems and optical testing equipment.
Custom dimensions can also be evaluated for OEM projects.
The product is designed to providehigh transmission uniformity over the full aperture.
Uniform optical attenuation is important when the filter is used in imaging,
beam control or precision optical measurement systems.
| Item | Specification |
|---|---|
| Product Name | Ø25.4mm Neutral Density Reflective Attenuation Filter |
| Filter Type | Reflective ND Filter |
| Wavelength Range | 400–1100nm |
| Diameter | 25.4mm |
| Substrate | Optical Glass |
| Coating | Reflective Multilayer Coating |
| Spectral Region | Visible + Near Infrared |
| Transmission Uniformity | High Uniformity over Full Aperture |
| Surface Quality | 60/40 or Better |
| Thickness | 1.0mm / 2.0mm Optional |
| Optical Function | Neutral Density Attenuation |
| Shape | Round |
| Applications | Laser, Photonics, Optical Testing, VIS-NIR |
| Customization | Available |
| Production | OEM / ODM / Bulk |
Technical Note:Actual attenuation, transmission level,
spectral uniformity and laser damage performance depend on the specific
coating design and operating conditions.
Detailed optical specifications can be confirmed according to the customer's requirements.
The filter is designed to reduce optical intensity across the400–1100nmwavelength range.
This broad spectral coverage allows one optical
component to be used across visible and near-infrared systems.
High transmission uniformity across the full aperture helps maintain
consistent optical attenuation across the active area of the filter.
This is especially useful for applications involving:
The multilayer reflective coating provides attenuation primarily through controlled reflection.
This design can be considered for optical systems
where broadband attenuation and optical stability are required.
The 400–1100nm ND filter can be used to reduce optical
intensity in specified laser and photonics systems.
Potential applications include:
The filter can be integrated into optical test setups to control the amount of light reaching a detector or measurement instrument.
Neutral density filtering can be used to control incoming optical intensity in imaging and camera systems.
The wide400–1100nmspectral range makes the filter suitable
for selected visible-to-near-infrared optical systems.
The Ø25.4mm format can be integrated into laboratory and
scientific optical assemblies requiring controlled broadband attenuation.
Available thickness options:
1.0mm
2.0mm
Custom thickness can be evaluated according to:
Standard surface quality:
60/40 or Better
Higher surface quality requirements can be evaluated for precision optical systems,
imaging applications and scientific instruments.
For OEM projects, we can evaluate customization of:
Customers can provide an optical drawing or target
transmission/attenuation curve for engineering evaluation.
It is a round optical filter with a 25.4mm diameter
designed to reduce optical intensity across its specified wavelength range.
The standard spectral range is400–1100nm, covering visible and near-infrared wavelengths.
Yes. It uses amultilayer reflective coatingfor broadband optical attenuation.
The substrate isoptical glass.
Standard options are1.0mm and 2.0mm.
The product is designed forhigh transmission uniformity over the full aperture.
It is suitable for specified laser applications.
The actual laser damage threshold should be evaluated according to
wavelength, power density, beam diameter, pulse characteristics and coating design.
Yes. Custom dimensions and optical specifications can be evaluated for OEM projects.
60/40 or betteris available according to the product specification.
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