T-LF5414-E - Ø1" CaF2 Negative Meniscus Lens, f = -50.0 mm, AR-Coated: 2 - 5 µm
T-LF5414-E - Ø1" CaF2 Negative Meniscus Lens, f = -50.0 mm, AR-Coated: 2 - 5 µm
- 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% Ravg from 2 - 5 μm
- Reference Drawing Click to see
-
AR Coating Range 2 - 5 μm Reflectance over
AR Coating Range @ 0° AOIRavg < 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