• Fabricated from N-BK7 Glass
• Collimates & Circularizes the Output of a Laser Diode
• Broadband AR Coating: 1050-1620 nm

This Thorlabs’ positive cylindrical lens is ideal for applications requiring magnification in one dimension. While spherical lenses act symmetrically in two dimensions on an incident ray, cylindrical lenses act in the same manner but only in one dimension. A typical application is to use a pair of cylindrical lenses to provide anamorphic shaping of a beam. A pair of positive cylindrical lenses can be used to collimate and circularize the output of a laser diode. Another application possibility would be to use a single lens to focus a diverging beam onto a detector array. To minimize the introduction of spherical abberations, collimated light should be incident on the curved surface when focusing it to a line, and light from a line source should be incident on the plano surface when collimating.

• Material: N-BK7
• Broadband AR Coating: 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 (Convex 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: 75.6 mm
• H: 25.4 mm
• L: 28.0 mm
• R: 39.1 mm
• Center Thickness t_c: 5.1 mm
• Edge Thickness t_e: 3.0 mm
• Back Focal Length f_b: 72.2 mm