The 532nm Notch Filter is a precision optical filter specifically
designed to reject unwanted green laser light around the532nm
wavelength while maintaining high transmission across the remaining optical spectrum.
With anegative notch filter design, the filter strongly suppresses
the 532nm laser wavelength while allowing light outside the rejection region to pass through.
With transmission of>90% outside the notch, this filter is suitable
for optical systems where 532nm laser suppression is required
without significantly reducing the transmission of other wavelengths.
The filter can be manufactured usingoptical glass or quartz
substrates with precision optical coatings and customized dimensions for different optical systems.
| Parameter | Specification |
|---|---|
| Blocking Wavelength | 532nm |
| Filter Type | Notch / Negative Filter |
| Transmission Outside Notch | >90% |
| Passband | UV–Visible–NIR, Except 532nm Region |
| Substrate | Optical Glass / Quartz |
| Coating | Precision Optical Coating |
| Incident Angle | 0° / Custom Angle |
| Surface Quality | 60/40 or Better |
| Thickness | 0.5mm / 1.0mm / Custom |
| Size | Custom Available |
| Shape | Round / Square / Custom |
| Mount | Optional |
The primary function of this optical filter is toblock 532nm green laser light.
The notch filter design creates a rejection band around the target
wavelength while allowing wavelengths outside the stopband to transmit.
This makes it useful for optical systems where the 532nm laser
is an unwanted source of background light or interference.
Unlike a conventional broadband blocking filter,
a notch filter is designed to reject a specific wavelength region while
maintaining transmission across a much wider spectral range.
This 532nm filter provides:
The exact spectral range and rejection bandwidth
can be customized according to system requirements.
The filter is available with different substrate options, including:
Optical Glass
Suitable for general optical filtering, imaging and detection applications.
Quartz
Can be selected when broader UV transmission or
application-specific substrate characteristics are required.
The substrate material can be selected according to
the customer's wavelength range and optical system.
The filter uses aprecision multilayer optical coatingdesigned for selective 532nm wavelength rejection.
The coating provides:
Custom coating specifications can be discussed for different incident angles and optical configurations.
The standard configuration is designed for0° incidence.
For systems using angled optical installation, customized incident-angle designs can be considered.
This is particularly useful when integrating the filter into:
Customers should provide the required incident angle when requesting a quotation.
The 532nm notch filter can be supplied in different shapes and dimensions.
Available configurations include:
Custom dimensions allow the filter to be integrated into existing
optical assemblies without major mechanical modifications.
The filter can be integrated into optical systems
requiring suppression of unwanted 532nm green laser light.
532nm laser sources are commonly used in Raman systems.
A notch filter can help suppress strong residual laser light while allowing
other wavelengths to reach the detector.
The filter can be used to reduce unwanted excitation laser interference in fluorescence-related optical systems.
The 532nm notch filter can help reduce specific green laser
interference in machine vision and optical inspection systems.
Selective wavelength rejection can be useful for sensors and
optical detection systems operating across a broad spectral range.
The filter can be incorporated into optical assemblies designed to reduce unwanted green laser transmission.
Designed specifically for green laser suppression around 532nm.
Maintains high transmission for wavelengths outside the rejection region.
Suitable for UV–Visible–NIR applications depending on substrate and coating configuration.
Multiple substrate options for different optical system requirements.
Custom wavelength, dimensions, thickness and incident angle available.
Mounted solutions are available for easier system integration.
The filter is designed to block532nm green laser light.
The specified transmission outside the notch is>90%.
No. This is anotch filter, also called a negative filter or laser rejection filter. It blocks a selected wavelength while transmitting a broader range outside the rejection band.
The filter can be manufactured usingoptical glass or quartz.
Yes. Custom round, square, rectangular and other dimensions are available.
Yes. 532nm notch filters are commonly used for laser rejection
in Raman spectroscopy systems. The exact filter specifications
should be selected according to the laser wavelength,
Raman range and detector requirements.
Yes. The standard configuration is 0°, while customized incident angles can be discussed.
Yes. Anoptional mounting framecan be provided according to the required dimensions and installation method.
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