T-LF5414-E - Ø1" CaF2 Negative Meniscus Lens, f = -50.0 mm, AR-Coated: 2 - 5 µm

Product Drawing

• Vacuum-Grade Calcium Fluoride Substrate
• Ø1/2" and Ø1" Versions Available
• Broadband AR Coating for the 2 - 5 μm Range
• Focal Lengths from -20.0 mm to -1000.0 mm
• Diameter 1" (25.4 mm)
• Focal Length -50.0 mm
• Diopter -20.0
• Radius of Curvature 1 68.5 mm
• Radius of Curvature 2 15.5 mm
• Center Thickness 4.0 mm
• Edge Thickness 9.4 mm
• Back Focal Length -49.2 mm
• AR Coating <1.25% R_avg from 2 - 5 μm
• Reference Drawing Click to see

• AR Coating Range	2 - 5 μm
  Reflectance over AR Coating Range @ 0° AOI	Ravg < 1.25%
  Diameters Available	1/2" or 1"
  Diameter Tolerance	+0.00/-0.10 mm
  Thickness Tolerance	±0.1 mm
  Focal Length Tolerance	±2%
  Surface Quality	40-20 (Scratch-Dig)
  Spherical Surface Power	3λ/2
  Spherical Surface Irregularity (Peak to Valley)	λ/2
  Centration	<3 arcmin
  Clear Aperture	>90% of Diameter
  Design Wavelength	4 μm