Optical Filter-Coligh’s Standard 540nm Optical Bandpass Filter FWHM 10nm

The 540nm optical bandpass filter is designed to transmit light centered at 540nm with a narrow Full Width at Half Maximum (FWHM) of 10nm. This filter is ideal for applications requiring precise selection of green light wavelengths, providing high transmission and effective blocking of unwanted wavelengths. It is widely used in spectroscopy, fluorescence imaging, and other precision optical systems.

Standard Specifications:

• Type: VIS (Visible) Bandpass Filter, Interference Filter
• Coating Type: Hard-coated for superior durability and stability
• Center Wavelength (CWL): 540nm ± 2nm
• Angle of Incidence: 0° ± 5°
• FWHM: 10nm ± 2nm
• Blocking Range: 200nm – 1100nm
• Blocking Depth: OD4 – OD6 or higher, ensuring efficient suppression of out-of-band light
• Transmission Peak: > 90% 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., 5nm, 8nm, 15nm, 20nm, 25nm, 30nm, 35nm) based on application needs.
• Angle of Incidence: Customizable to accommodate non-standard system designs.
• Blocking Depth: Options for OD2, OD3, OD4, etc., tailored to specific performance requirements.
• Sizes: Round or square shapes, up to 150mm x 150mm.
• Material Thickness: Adjustable to meet specific project needs.
• Transmission & Blocking Range: Customizable within the 200nm to 1500nm range.

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Applications:

• Fluorescence Microscopy: Ideal for isolating green fluorophores, reducing background noise for clear imaging results.
• Spectroscopy: Provides high-resolution filtering for spectral analysis in laboratory instruments.
• Laser Systems: Used in laser setups requiring precise green light isolation for various scientific and industrial applications.
• Optical Communication: Enhances signal clarity in visible light communication systems by isolating the 540nm wavelength.
• Biomedical Imaging: Enhances detection of green-emitting biomarkers for diagnostics and imaging in life sciences.
• Color Imaging & Photography: Improves color balance in imaging systems by isolating the green spectrum for accurate color reproduction.
• Lighting Applications: Useful in specialty lighting that requires precise control of the green spectrum for visual displays and research