A 575nm bandpass optical filters with a Full Width at Half Maximum (FWHM) of 25nm is a specialized optical filter that allows only light in a narrow range of wavelengths centered around 575nm to pass through, while blocking or significantly attenuating light outside that range.

One potential application for this filter is in fluorescence microscopy, where it can be used to isolate the emission signal of fluorophores that emit light at a wavelength close to 575nm. By using this filter, the background noise from other light sources can be minimized, allowing for clearer imaging of the target fluorophore.

Another possible application is in spectroscopy, where it can be used to select a specific wavelength range of interest for measurement. For example, if the goal is to measure the absorption or transmission of a particular substance at 575nm, this filter can be used to isolate that wavelength range and exclude unwanted wavelengths.

Coligh’s stock standard 575nm bandpass optical filters FWHM 25nm feature:

• Feature: VIS bandpass filter
• Center wavelength: 575nm±5nm
• Angle of incidence: 0°
• FWHM: 25nm±5nm
• Blocking range: 300-1100nm
• Blocking depth: OD6
• Transmission average: Above 90%
• Thickness：1.0mm, 1.1mm
• Size: φ18mm, φ20mm φ25.4mm, φ50mm mounted or unmounted

Custom option:

• Bandwidth:  50nm,  100nm or any bandwidth client request
• Angle of incidence: Depends on the request
• Blocking depth:  OD5, OD6, OD8
• Size: round or square smaller than 100*100mm
• Material thickness: Depend on request
• Transmission and blocking rang: custom as per requirement or between 200nm to 1500nm