A 620nm optical bandpass filter with a 10nm Full Width at Half Maximum (FWHM) allows light within a narrow wavelength range centered around 620nm (nanometers), with the width of this range at half of the maximum transmission being 10nm.

In practical terms, this filter selectively transmits light around the 620nm wavelength while blocking or attenuating light outside this range. The 10nm FWHM value indicates the width of the range of wavelengths passed by the filter.

Applications for such filters could include fluorescence microscopy, flow cytometry, photometry, and other optical systems where precise control over the wavelength of transmitted light is essential for accurate measurement or observation in the vicinity of 620nm.

Coligh’s stock standard 620nm optical bandpass filter FWHM 10nm feature:

• Feature: VIS bandpass filter
• Center wavelength: 620nm±2nm
• Angle of incidence: 0°
• FWHM: 10nm±2nm
• Blocking range: 200-1100nm
• Blocking depth: OD4, OD6 and above
• Transmission average: Above 90%
• Thickness：1.0mm, 1.1mm
• Size: φ8mm, φ10mm, φ12.5mm, φ25.4mm, φ50mm mounted or unmounted
• Material: B270, K9, Fused silica

Custom option:

• Bandwidth: 10nm, 20nm, 22nm, 30nm, 40nm, 50nm,56nm,  or any bandwith client request
• Angle of incidence: Depend on request
• Blocking depth:  OD4, OD5, OD6, OD8
• Bandwidth: Narrow to 1nm
• Size: round or square smaller than 150*150mm
• Material thickness: Depend on request
• Transmission and blocking rang: custom as per requirement or between 200nm to 1500nm

Please contact sales for stock status.