Coligh’s Standard 523nm Optical Bandpass Filter (FWHM 20nm)

The 523nm optical bandpass filter is designed to transmit green light centered at 523nm, with a Full Width at Half Maximum (FWHM) of 20nm. This high-performance filter is ideal for applications that require accurate wavelength isolation and high transmission in the green spectral range, such as fluorescence microscopy, spectroscopy, and optical instrumentation.

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Standard Specifications:

• Type: VIS Bandpass Filter, Interference Filter
• Coating Type: Hard-coated for enhanced durability and stable performance
• Center Wavelength (CWL): 523nm ± 2nm
• Angle of Incidence: 0° ± 5°
• FWHM: 20nm ± 2nm
• Blocking Range: 200nm – 1100nm
• Blocking Depth: OD4 – OD6 or higher for effective out-of-band suppression
• Transmission Peak: > 80%
• Thickness: 1.0mm, 1.1mm, 0.3mm, 0.5mm, 0.55mm, 0.7mm
• Sizes Available: φ12.5mm, φ25.4mm, φ50mm (custom sizes available upon request)
• Clear Aperture: > 90%
• Material: B270, Fused Silica for excellent optical quality and low absorption

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Custom Options:

• Bandwidth: Tailored FWHM options (e.g., 10nm, 30nm, 40nm) to meet specific application needs
• Angle of Incidence: Adjustable for non-perpendicular light paths
• Blocking Depth: Custom OD levels (e.g., OD2, OD3, OD4, or higher)
• Sizes: Round or square dimensions up to 150mm x 150mm
• Material Thickness: Customizable to suit specific optical systems
• Transmission & Blocking Range: Configurable between 200nm and 1500nm

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Applications:

• Fluorescence Microscopy: Ideal for isolating fluorescent signals in the green spectral range.
• Biomedical Imaging: Enhances imaging contrast for green-light-sensitive applications.
• Spectroscopy: Provides precise wavelength filtering for accurate material analysis.
• Optical Communication: Supports wavelength-specific light control in communication systems.
• Color Imaging: Delivers optimal performance for color separation in imaging applications.
• Laser Systems: Isolates 523nm laser lines for precision tasks.
• LED Display Technology: Ensures controlled emission in LED-based systems.