Coligh’s Standard 570nm Optical Bandpass Filter FWHM 20nm

The 570nm optical bandpass filter is engineered to transmit light centered at 570nm with a Full Width at Half Maximum (FWHM) of 20nm. This filter offers selective transmission of light in the yellow-green portion of the visible spectrum, ideal for applications that require high precision in light filtering, such as fluorescence microscopy, spectroscopy, and color imaging. With its balanced bandwidth, it is highly effective in isolating wavelengths while ensuring excellent transmission performance.

Standard Specifications:

• Type: VIS (Visible) Bandpass Filter, Interference Filter
• Coating Type: Hard-coated for durability and high stability
• Center Wavelength (CWL): 570nm ± 5nm
• Angle of Incidence: 0° ± 5°
• FWHM: 20nm ± 3nm
• Blocking Range: 200nm – 1100nm
• Blocking Depth: OD4 – OD6 or higher, ensuring robust attenuation of out-of-band wavelengths
• Transmission Peak: > 85% 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 and minimal absorption

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Custom Options:

• Bandwidth: Additional FWHM options available (e.g., 10nm, 30nm, 40nm, 50nm, 60nm, 70nm, 80nm) based on specific requirements.
• Angle of Incidence: Customizable depending on the optical system’s design.
• Blocking Depth: Options for OD2, OD3, OD4, etc., to meet particular application needs.
• Sizes: Round or square shapes, with custom sizes up to 150mm x 150mm.
• Material Thickness: Adjustable to meet project specifications.
• Transmission & Blocking Range: Customizable within 200nm to 1500nm.

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Applications:

• Fluorescence Microscopy: Perfect for isolating specific fluorescent emission peaks, especially for yellow-green fluorophores.
• Spectroscopy: Essential for spectral analysis in scientific research and instrumentation where precise wavelength control is critical.
• Color Imaging & Photography: Improves imaging of yellow-green light, providing enhanced color reproduction and contrast.
• Biomedical Imaging: Supports high-precision imaging for medical diagnostics, particularly in applications using biomarkers emitting in the yellow-green spectrum.
• Optical Communication: Facilitates communication systems requiring high-quality wavelength isolation in the visible spectrum.
• Laser Systems: Ideal for laser applications where specific wavelength isolation is necessary for efficiency and performance.
• Lighting Applications: Can be used in specialty lighting designs where the yellow-green portion of the spectrum is required.