Coligh’s Standard 470nm Optical Bandpass Filter FWHM 30nm

The 470nm optical bandpass filter is optimized to transmit blue light centered at 470nm, with a Full Width at Half Maximum (FWHM) of 30nm. This filter is ideal for applications requiring precise wavelength selection and high transmission efficiency in the blue spectrum, making it suitable for fluorescence microscopy, imaging, and biomedical research.

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Standard Specifications:

• Type: VIS Bandpass Filter, Interference Filter
• Coating Type: Hard-coated for enhanced durability and performance stability
• Center Wavelength (CWL): 470nm ± 5nm
• Angle of Incidence: 0° ± 5°
• FWHM: 30nm ± 5nm
• Blocking Range: 200nm – 1100nm
• Blocking Depth: OD4 – OD6 or higher for strong out-of-band light suppression
• Transmission Peak: > 90%
• Thickness: 0.3mm, 0.5mm, 0.55mm, 0.7mm, 1.0mm, 1.1mm
• Sizes Available: φ12.5mm, φ25.4mm, φ50mm (custom sizes available upon request)
• Clear Aperture: > 90%
• Material: D263T, Float Glass, B270, Fused Silica for superior optical quality

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Custom Options:

• Bandwidth: FWHM options such as 8nm, 10nm, 15nm, 20nm, 25nm, 30nm, 40nm, or custom values based on user needs
• Angle of Incidence: Adjustable to optimize performance for tilted applications
• Blocking Depth: Tailored OD levels (e.g., OD2, OD3, OD4, or higher)
• Sizes: Round or square dimensions up to 150mm x 150mm
• Material Thickness: Customizable for specific application requirements
• Transmission & Blocking Range: Configurable within 200nm to 2000nm

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Applications:

• Fluorescence Microscopy: Efficiently isolates fluorescent dyes excited in the blue spectrum.
• Biomedical Imaging: Enhances contrast and clarity in blue-sensitive diagnostic systems.
• Spectroscopy: Delivers precise wavelength filtering for material and chemical analysis.
• Optical Instrumentation: Provides reliable filtering for devices measuring blue wavelengths.
• Color Imaging and Photography: Enhances color accuracy in imaging systems by isolating blue light.
• LED Lighting and Displays: Controls emission spectra for LED-based systems.
• Laser Systems: Isolates 470nm laser lines for precision applications