A 550nm bandpass filter with a Full Width at Half Maximum (FWHM) of 42nm is designed to allow light predominantly within a specific wavelength range to pass through effectively. Here are some potential applications for such a filter:

• Color Imaging and Photography
• Fluorescence Microscopy
• Spectroscopy
• Optical Communication
• Biomedical Imaging
• Spectral Sensing
• Lighting Applications

Coligh’s stock standard 550nm optical bandpass filter FWHM 42nm feature:

• Feature: VIS bandpass filter
• Center wavelength: 550nm±5nm
• Angle of incidence: 0°
• FWHM: 42nm±5nm
• Blocking range: 200-1100nm
• Blocking depth: OD4, OD6 and above
• Transmission average: Above 90%
• Thickness：1.0mm, 1.1mm
• Size:  φ12.5mm, φ25.4mm, φ50mm mounted or unmounted
• Material: B270, K9, Fused silica

Custom option:

• Bandwidth: 10nm, 20nm, 30nm, 50nm,  or any bandwith client request
• Angle of incidence: Depend on request
• Blocking depth:  OD5, OD6, OD8
• 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