Coligh’s Standard 490nm Optical Bandpass Filter FWHM 35nm

The 490nm optical bandpass filter is designed to transmit light centered at 490nm with a Full Width at Half Maximum (FWHM) of 35nm. This filter ensures precise wavelength selection and high transmission efficiency, making it ideal for applications requiring reliable spectral performance.

Standard Specifications:

• Type: Visible Bandpass Filter, Interference Filter
• Coating Type: Hard-coated
• Center Wavelength (CWL): 490nm ± 3nm
• Angle of Incidence: 0° ± 5°
• FWHM: 35nm ± 3nm
• Blocking Range: 300-1100nm
• Blocking Depth: OD4 or higher
• Transmission Peak: >= 90%
• Thickness: 1.1mm，1.0mm, 0.55mm (standard, customizable upon request)
• Sizes: φ6mm, φ8mm, φ10mm, φ12mm, φ12.5mm, φ 25mm, φ50mm, (custom sizes available upon request)
• Clear Aperture: > 90%
• Material: Optical glass (fused silica, BK7, or others available upon request)

Custom Options:

• Bandwidth: Custom FWHM options available (e.g., 8nm, 10nm, 15nm, 20nm, 25nm, 30nm, 35nm, 50nm, etc.)
• Angle of Incidence: Adjustable according to application needs (0° to 30°)
• Blocking Depth: Options for OD2, OD3, OD4, OD5, etc.
• Sizes: Round or square, up to 150mm x 150mm
• Material Thickness: Tailorable to specific project requirements
• Transmission & Blocking Range: Customizable within customer-defined ranges

Applications:

• Color Imaging & Photography
• Fluorescence Microscopy
• Spectroscopy
• Optical Communication
• Biomedical Imaging
• Spectral Sensing
• Machine Vision Systems
• Lighting and Display Technologies