650nm Optical Bandpass Filter FWHM 50nm

Item No: COBF650-50

Type: Bandpass filter

Coating: Hard coating

Customs Optical Filters: Availiable

650nm Optical Bandpass Filter FWHM 50nm - 650nm optical bandpass filter

Coligh’s Standard 650nm Optical Bandpass Filter (FWHM 50nm)

The 650nm optical bandpass filter is designed to transmit light centered at 650nm with a Full Width at Half Maximum (FWHM) of 50nm, ensuring precise wavelength selection within the red region of the visible spectrum. This filter provides high transmission efficiency and excellent out-of-band blocking, making it an ideal choice for applications requiring accurate color isolation and enhanced spectral performance.


Standard Specifications:

  • Type: VIS Bandpass Filter, Interference Filter
  • Coating Type: Hard-coated for durability and environmental resistance
  • Center Wavelength (CWL): 650nm ± 5nm
  • Angle of Incidence: 0° ± 5°
  • FWHM: 50nm ± 5nm
  • Blocking Range: 200nm – 1100nm
  • Blocking Depth: OD2-OD3 or higher
  • Peak Transmission: > 90%
  • Thickness: 1.0mm, 1.1mm, 0.7mm, 0.5mm, 0.55mm, 0.3mm
  • Sizes Available: φ12.5mm, φ25.4mm, φ50mm, or custom dimensions upon request
  • Clear Aperture: > 90%
  • Material: Float glass, B270, D263T for superior optical clarity and low absorption

Custom Options:

  • Bandwidth: Adjustable to 20nm, 30nm, 40nm, 60nm, 70nm, 80nm or as requested
  • Angle of Incidence: Configurable for tilted light applications
  • Blocking Depth: Custom OD levels (e.g., OD3, OD4, OD5, OD6)
  • Sizes: Round or square formats up to 150mm x 150mm
  • Material Thickness: Customizable to fit specific optical system requirements
  • Transmission & Blocking Range: Tailorable between 200nm – 2000nm

Applications:

  • Color Imaging and Photography: Enhances image quality by isolating the red spectrum.
  • Lighting Applications: Optimizes light output for display and illumination systems.
  • Laser Systems: Isolates specific laser lines for precision tasks.

 

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