Coligh’s Standard 488nm Optical Bandpass Filter FWHM 30nm

The 488nm optical bandpass filter is specifically designed to transmit light centered at 488nm with a Full Width at Half Maximum (FWHM) of 30nm. This filter is ideal for applications requiring precise wavelength selection in the blue-green region of the visible spectrum. It ensures high transmission efficiency and effective blocking of unwanted wavelengths, making it an excellent choice for fluorescence microscopy, flow cytometry, spectroscopy, and laser-based systems.

Standard Specifications:

• Type: VIS (Visible) Bandpass Filter, Interference Filter
• Coating Type: Hard-coated for high durability and stable optical performance
• Center Wavelength (CWL): 488nm ± 5nm
• Angle of Incidence: 0° ± 5°
• FWHM: 30nm ± 5nm
• Blocking Range: 300-1100nm
• Blocking Depth: OD4 – OD6 or higher, ensuring robust out-of-band light suppression
• Transmission Peak: > 90%
• Thickness: 1.0mm, 1.1mm, 0.55mm, 0.5mm, 0.7mm
• Sizes Available:φ6mm, φ8mm, φ10mm, φ12mm,  φ12.5mm, φ25.4mm, φ50mm (custom sizes available upon request)
• Clear Aperture: > 90%
• Material: B270, Fused Silica for superior optical clarity and minimal absorption

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Custom Options:

• Bandwidth: Custom FWHM options available (e.g., 10nm, 20nm, 40nm) based on specific application needs.
• Angle of Incidence: Adjustable to optimize performance in non-perpendicular light paths.
• Blocking Depth: Options for OD2, OD3, OD4, or higher as required for specific use cases.
• Sizes: Custom round or square shapes available, up to 150mm x 150mm.
• Material Thickness: Can be customized according to project requirements.
• Transmission & Blocking Range: Adjustable between 200nm to 2000nmnm to meet specific application demands.

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Applications:

• Fluorescence Microscopy: Perfect for isolating fluorescent markers like GFP (Green Fluorescent Protein) and other dyes emitting around 488nm.
• Flow Cytometry: Enhances the detection of specific fluorophores, improving the accuracy of cellular analysis.
• Spectroscopy: Provides precise wavelength control for analyzing materials and compounds.
• Laser Systems: Ideal for laser line isolation in high-precision instruments.
• Biomedical Imaging: Improves the clarity of diagnostic imaging by filtering out unwanted spectral noise.
• Optical Communication: Supports data transmission systems by isolating specific wavelengths for better signal clarity.
• Scientific Research: Useful in applications where blue-green light filtering is crucial for experimental accuracy.