The700–1100nm Long Pass Infrared Optical Filteris designed to transmit
near-infrared wavelengths from700nm to 1100nmwhile blocking shorter wavelengths below 700nm.
With an average transmission of≥90% across 700–1100nm,
this infrared longpass filter provides efficient spectral selection for optical systems
requiring near-infrared wavelength transmission.
The filter uses amultilayer dielectric coatingand is available with BK7,
optical glass or fused silica substrates depending on the optical system and application requirements.
The filter is designed to pass near-infrared wavelengths from700nm to 1100nm
while suppressing visible wavelengths below the 700nm cut-on region.
Average Transmission: ≥90% @ 700–1100nm
OD4 / OD5 below 700nm
Blocking Range: 400–700nm
This spectral configuration makes the filter suitable for optical systems
that need to reduce visible-light interference while transmitting near-infrared wavelengths.
| Parameter | Specification |
|---|---|
| Cut-On Wavelength | 700nm |
| Passband | 700–1100nm |
| Average Transmission | ≥90% |
| Blocking | OD4 / OD5 |
| Blocking Range | 400–700nm |
| Incident Angle | 0° |
| Polarization | Unpolarized |
| Coating | Multilayer Dielectric |
| Substrate | BK7 / Optical Glass / Fused Silica |
| Surface Quality | 60/40 or 40/20 |
| Flatness | λ/4 @ 632.8nm |
| Operating Temperature | -20 to +80°C |
Standard options include:
Custom diameters, thicknesses and optical specifications
can be manufactured according to customer requirements.
The filter uses anoptical multilayer dielectric coatingto achieve the required transmission and blocking characteristics.
Single-side and double-side coated versions are available depending on the application and optical system design.
Different substrate materials can be selected according to application requirements:
A commonly used optical glass substrate for general optical filter applications.
Suitable for customized optical systems requiring specific mechanical and optical configurations.
Available for applications requiring fused silica as the optical substrate.
The 700–1100nm longpass filter is suitable for:
Machine vision systems can use longpass filters to selectively transmit
near-infrared wavelengths while reducing unwanted shorter-wavelength light.
The 700nm cut-on design can be integrated into customized
imaging and inspection systems where NIR transmission is required.
For infrared imaging applications, the filter provides transmission across
the 700–1100nmrange while blocking wavelengths in
the 400–700nm region according to the specified OD4/OD5 blocking performance.
This makes it suitable for optical systems requiring spectral separation between visible and near-infrared wavelengths.
We support OEM and ODM production of infrared optical filters based on customer optical drawings and specifications.
Customization options include:
Send us your required wavelength range, diameter, thickness and coating specifications for a customized quotation.
The specified passband is700–1100nm, with an average transmission of ≥90%.
The specified blocking range is400–700nm, with OD4/OD5 blocking below 700nm.
The nominal cut-on wavelength is700nm.
Standard sizes include10mm, 15mm, 20mm and 23mm diameter,
with different thickness options. Custom sizes are also available.
The filter can be supplied withBK7, optical glass or fused silicasubstrates.
Yes. Wavelength range, blocking performance, substrate, diameter,
thickness, coating and other optical specifications can be customized.
Yes. The 700nm longpass configuration is suitable for
machine vision and other optical systems requiring near-infrared transmission.
Yes. OEM/ODM and custom optical filter production are available for prototype and volume applications.
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