The 1327nm Narrow Bandpass NIR Reflective Optical Filter
is a precision optical filter designed for wavelength-selective
control in the near-infrared region.
It is manufactured using anoptical glass substratewith amultilayer
dielectric coatingengineered for narrowband transmission
around the 1327nm wavelength and effective rejection of unwanted spectral components.
OptionalOD4, OD5 and OD6specifications allow the
filter to be configured according to the required out-of-band blocking level.
The filter is designed around the1327nm wavelength,
making it suitable for optical systems operating in the near-infrared spectral region.
Its narrowband design helps isolate the required wavelength
while reducing unwanted optical energy outside the target spectral region.
Typical applications include:
Unlike broadband NIR filters, a narrow bandpass filter is designed
to selectively transmit a limited wavelength region around the target wavelength.
This makes the filter suitable for optical systems where spectral discrimination is important.
The exact center wavelength tolerance, bandwidth and
transmission profile can be specified according to the optical coating design.
The product is available with optional optical density levels:
OD4
OD5
OD6
Higher OD values correspond to stronger attenuation in the specified blocking regions.
The final blocking curve and spectral performance should be
confirmed according to the selected coating specification.
The filter uses a precisionmultilayer dielectric optical coating.
This coating structure is designed to provide:
The coating parameters can be adjusted according to application requirements.
| Item | Specification |
|---|---|
| Product Name | 1327nm Narrow Bandpass NIR Reflective Optical Filter |
| Filter Type | Narrow Bandpass Reflective Filter |
| Center Wavelength | 1327nm |
| Spectral Region | Near Infrared |
| Optical Density | OD4 / OD5 / OD6 Optional |
| Substrate | Optical Glass |
| Coating | Multilayer Dielectric Coating |
| Surface Quality | 60/40 or Better |
| Standard Thickness | 1.0mm / 2.0mm |
| Thickness | Customizable |
| Size | Custom Sizes |
| Shape | Customizable |
| Optical Function | Narrowband Transmission + Out-of-Band Blocking |
| Coating Type | Dielectric Multilayer Thin Film |
| Applications | NIR Sensing, Imaging, Detection, Spectroscopy |
| Manufacturing | OEM / ODM / Custom |
Technical Note:
The exact center wavelength, FWHM, peak transmission,
blocking range and OD performance depend on
the specific coating design. These parameters should be confirmed
according to the customer's optical requirements.
The filter is designed to isolate the required wavelength region
around1327nmwhile reducing unwanted wavelengths outside the passband.
This is useful in optical systems where the detector or
sensor needs to receive a controlled NIR spectral band.
OD4, OD5 and OD6 configurations provide different levels of out-of-band attenuation.
This allows the filter to be matched to applications with different stray-light rejection requirements.
The multilayer dielectric coating enables precise spectral shaping and blocking characteristics.
Coating design can be optimized according to:
The filter uses high-quality optical glass as the substrate.
Key characteristics include:
Standard surface quality:
60/40 or better
Higher surface-quality specifications may be considered
according to imaging, sensing or scientific instrument requirements.
Available thickness options include:
1.0mm
2.0mm
Custom thicknesses can also be evaluated based on:
Custom filter dimensions are available for OEM and industrial projects.
Possible customization includes:
This makes the filter suitable for both standard optical assemblies and custom optical modules.
The 1327nm narrow bandpass filter can be used in
optical sensing systems requiring selective near-infrared wavelength transmission.
Possible applications include:
The filter can be integrated into imaging systems where
the sensor requires a controlled NIR spectral band.
Potential applications include:
The narrowband structure can be used for selected
spectroscopic and analytical optical systems where wavelength discrimination is required.
Suitable for selected scientific and analytical instruments requiring precise NIR spectral filtering.
The filter can be customized for industrial optical systems
requiring narrowband wavelength selection and out-of-band blocking.
For OEM projects, the coating can be designed around customer requirements.
Customization may include:
Customers can provide an optical transmission target or spectral curve for engineering evaluation.
We support:
Custom NIR optical filters
Custom narrow bandpass filters
Custom dielectric coatings
Optical glass processing
OEM/ODM manufacturing
Prototype samples
Small-batch production
Bulk production
For quotation, provide:
Wavelength + Bandwidth + OD Requirement + Size + Thickness + Quantity + Application
It is an optical filter designed to selectively transmit a narrow wavelength region around 1327nm while rejecting unwanted wavelengths outside the passband.
Yes. 1327nm is in the near-infrared spectral region.
OD, or optical density, describes attenuation in the
specified blocking region. OD4, OD5 and OD6 represent progressively stronger attenuation levels.
The standard substrate is optical glass.
The filter uses a multilayer dielectric optical coating designed for
narrowband spectral transmission and out-of-band rejection.
Standard thicknesses are1.0mm and 2.0mm, with custom thicknesses available.
Yes. Custom diameter, length, width, thickness and shape
can be manufactured according to application requirements.
Yes. Center wavelength and bandwidth can be
evaluated according to the required optical coating design.
Yes. Blocking requirements and optical density targets can
be incorporated into a customized coating specification.
Yes. OEM/ODM, prototype, small-batch and bulk production are supported.
Looking for a1327nm narrow bandpass NIR filterfor sensing, imaging, detection or spectroscopy?
Please provide:
Center Wavelength + FWHM/Bandwidth + OD Requirement + Size + Thickness + Quantity + Application
Our engineering team can evaluate the required optical glass and multilayer dielectric coating specification.
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