Coligh’s Standard 520nm Optical Bandpass Filter (FWHM 10nm)

The 520nm optical bandpass filter is engineered to selectively transmit visible light centered at 520nm with a Full Width at Half Maximum (FWHM) of 10nm. This filter is optimized for applications requiring precise control of the green wavelength, making it an ideal choice for applications in imaging, spectroscopy, and optical sensing.

Standard Specifications:

• Type: VIS (Visible) Bandpass Filter, Interference Filter
• Coating Type: Hard-coated for durability and enhanced performance
• Center Wavelength (CWL): 520nm ± 2nm
• Angle of Incidence: 0° ± 5°
• FWHM: 10nm ± 2nm
• Blocking Range: 200nm – 1100nm
• Blocking Depth: OD4 – OD6 or higher for superior out-of-band rejection
• Transmission Peak: > 70% at CWL
• Thickness: 1.0mm, 1.1mm
• Sizes Available: φ12.5mm, φ25.4mm, φ50mm (custom sizes available upon request)
• Clear Aperture: > 90%
• Material: B270, Fused Silica for high optical clarity

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Custom Options:

• Bandwidth: Other FWHM options available (e.g., 5nm, 15nm, 20nm, 25nm, 30nm, 35nm) upon request.
• Angle of Incidence: Customizable for non-normal incidence angles.
• Blocking Depth: Options for OD2, OD3, OD4, etc., based on application needs.
• Sizes: Round or square filters up to 150mm x 150mm.
• Material Thickness: Adjustable to fit specific project requirements.
• Transmission & Blocking Range: Customizable within 200nm to 1500nm.

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Applications:

• Color Imaging & Photography: Enhances green spectrum capture for more accurate color reproduction.
• Fluorescence Microscopy: Ideal for isolating green fluorescent markers with minimal crosstalk.
• Spectroscopy: Enables precise spectral analysis for research and quality control.
• Optical Communication: Enhances signal clarity in visible light communication systems.
• Biomedical Imaging: Useful in isolating green wavelengths for diagnostic imaging and analysis.
• Spectral Sensing: Improves accuracy in environmental sensing and material characterization.
• Lighting Applications: Provides controlled green light for use in architectural lighting and display technologies.