Coligh’s Standard 540nm Optical Bandpass Filter (FWHM 30nm)

The 540nm optical bandpass filter is designed to transmit light centered at 540nm with a Full Width at Half Maximum (FWHM) of 30nm. This filter is ideal for applications requiring enhanced light transmission in the green region of the visible spectrum, while effectively blocking out unwanted wavelengths. It is commonly used in fields such as fluorescence imaging, spectroscopy, biomedical analysis, and optical communication.

Standard Specifications:

• Type: VIS (Visible) Bandpass Filter, Interference Filter
• Coating Type: Hard-coated for enhanced durability and stability
• Center Wavelength (CWL): 540nm ± 5nm
• Angle of Incidence: 0° ± 5°
• FWHM: 30nm ± 5nm
• Blocking Range: 200nm – 1200nm
• Blocking Depth: OD4 – OD6 or higher for superior suppression of out-of-band wavelengths
• Transmission Peak: > 90%
• Thickness: 1.0mm, 1.1mm, 0.55mm
• Sizes Available: φ6mm, φ8mm, φ10mm, φ12mm, 12.5mm, φ25.4mm, φ50 , φ50.8mm (custom sizes available upon request)
• Clear Aperture: > 90%
• Material: B270, Fused Silica for excellent optical clarity and minimal absorption

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Custom Options:

• Bandwidth: Additional FWHM options available (e.g., 8nm,  10nm, 15nm, 18nm, 20nm, 25nm, 40nm) based on specific application needs.
• Angle of Incidence: Adjustable to optimize filter performance in angled light paths.
• Blocking Depth: Options for OD2, OD3, OD4, or higher, tailored to project requirements.
• Sizes: Custom round or square shapes available, up to 150mm x 150mm.
• Material Thickness: Can be customized based on specific project needs.
• Transmission & Blocking Range: Adjustable between 200nm to 2000nm as required.

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Applications:

• Fluorescence Microscopy: Isolates specific green fluorescent dyes, enhancing signal clarity and imaging sensitivity.
• Spectroscopy: Ensures accurate wavelength selection for precise material analysis and optical research.
• Biomedical Imaging: Improves diagnostic imaging systems by isolating specific wavelengths for biomarker detection.
• Optical Communication: Enhances data transmission quality by filtering specific wavelengths.
• Color Imaging & Photography: Increases color accuracy by filtering out unwanted wavelengths, ideal for digital imaging.
• Laser Systems: Suitable for laser line isolation in systems requiring controlled wavelength output.
• Specialized Lighting: Useful in LED and display technologies where controlled green light emission is needed.