Coligh’s Standard 520nm Optical Bandpass Filter FWHM 20nm

The 520nm optical bandpass filter is designed to transmit visible light centered at 520nm with a Full Width at Half Maximum (FWHM) of 20nm. This filter is ideal for applications requiring precise wavelength selection and high selectivity, ensuring accurate measurements and enhanced imaging.

Standard Specifications:

• Type: VIS (Visible) Bandpass Filter, Interference Filter
• Coating Type: Hard-coated
• Center Wavelength (CWL): 520nm ± 3nm
• Angle of Incidence: 0° ± 5°
• FWHM: 20nm ± 3nm
• Blocking Range: 200nm – 1100nm
• Blocking Depth: OD4 – OD6 or higher
• Transmission Peak: > 80%
• Thickness: 1.0mm, 1.1mm
• Sizes: φ12.5mm, φ25.4mm, φ50mm (other sizes available upon request)
• Clear Aperture: > 90%
• Material: B270, Fused Silica

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Custom Options:

• Bandwidth: Custom FWHM options (e.g., 10nm, 15nm, 25nm, 30nm, 35nm 40nm) available upon request.
• Angle of Incidence: Adjustable according to application needs.
• Blocking Depth: Options for OD2, OD3, OD4, etc.
• Sizes: Round or square, up to 150mm x 150mm.
• Material Thickness: Tailorable based on specific project requirements.
• Transmission & Blocking Range: Customizable within 200nm to 1500nm range.

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Applications:

• Color Imaging & Photography: Enhances contrast for green light.
• Fluorescence Microscopy: For selective excitation of specific fluorophores.
• Spectroscopy: Precise filtering for accurate spectral measurements.
• Optical Communication: Enhances performance in visible light communication.
• Biomedical Imaging: Assists in isolating specific wavelengths for diagnostics.
• Spectral Sensing: For environmental and material analysis.
• Lighting Applications: Provides controlled green light for architectural and stage lighting.