The 650–750nm Bandpass Optical Filter is a wavelength-selective optical filter
designed to transmit red to near-infrared light while blocking unwanted wavelengths outside the passband.
With a typical 700nm center wavelength (CWL) and 100nm full width
at half maximum (FWHM), the filter provides efficient spectral selection for optical imaging,
machine vision and sensing systems.
The filter uses a dielectric reflective coating and provides a peak transmission of
≥90% within the passband, helping improve optical signal quality and reduce unwanted background light.
The filter is designed to selectively transmit wavelengths between approximately
650nm and 750nm, covering the red to near-infrared transition region.
With a typical center wavelength of 700nm, it can be integrated into optical systems
requiring controlled spectral transmission and suppression of unwanted wavelengths.
The ≥90% peak transmission specification helps maintain optical signal strength within the passband.
In addition to transmitting the target wavelength range, the filter provides blocking outside the passband.
Typical blocking specifications include:
This spectral filtering can help reduce unwanted ambient light and background
radiation reaching the detector or imaging sensor.
Different substrate materials can be selected according to the requirements of the optical system.
Suitable for general optical filtering and imaging applications.
A widely used optical glass suitable for many visible and near-infrared optical systems.
Suitable for applications requiring excellent optical properties and broader wavelength performance.
Custom substrate and coating configurations can be discussed according to your application.
We support customized optical filters for OEM and system integration applications.
Customization options may include:
Customers can provide drawings or optical specifications for engineering review.
650–750nm bandpass filters can be used with machine vision cameras to
selectively transmit the required red/NIR wavelength range and reduce unwanted background light.
The filter can be integrated into imaging systems requiring wavelength-selective transmission.
Suitable for optical sensors and detection systems operating around the 650–750nm wavelength region.
The typical center wavelength is 700nm.
The nominal passband is 650–750nm, with a typical FWHM of 100nm.
The specified blocking range extends to 1100nm, including the 750–1100nm region.
Optical Glass, BK7 and Fused Silica are available depending on application requirements.
Yes. Custom size, substrate, coating and spectral specifications can be provided for OEM applications.
The standard specification is 0° normal incidence.
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