• Made of N-BK7 Glass
• AR Coating Wavelength Range: 1050 - 1620 nm

This Thorlabs’ negative cylindrical lens acts as a plano-concave spherical lens, except on only one axis. This lens is used in applications that require one dimensional shaping of a light source. A typical application is to use a single cylindrical lens to turn a collimated laser into a line generator. Pairs of cylindrical lenses may be used to anamorphically shape images. To minimize the introduction of abberation, the curved surface of the lens should face the source when used to diverge a beam.

• Material: N-BK7
• AR Coating Range: 1050-1620 nm
• Design Wavelength: 587.6 nm
• Length Tolerance: +0.00 / -0.10 mm
• Height Tolerance: +0.00 / -0.10 mm
• Center Thickness Tolerance: ±0.2 mm
• Focal Length Tolerance: ±1%
• Surface Quality: 60-40 Scratch-Dig
• Centration: For f ≤50 mm: ≤5 arcmin; For f >50 mm: ≤3 arcmin
• Surface Flatness (Plano Side): Height λ/2; Length λ/2
• Cylindrical Surface Power (Concave Side): Height 3λ/2; Length 3λ/2
• Irregularity: Height (Plano, Curved) λ/4, λ; Length (Plano, Curved) λ/4, λ/cm
• Clear Aperture: >90% of Surface Dimensions
• f: -6.4 mm
• H: 6.0 mm
• L: 12.0 mm
• R: -3.3 mm
• Center Thickness t_c: 2.0 mm
• Edge Thickness t_e: 3.2 mm
• Back Focal Length f_b: -7.7 mm