OST Photonics Cylindrical Lenses Cylindrical lenses are utilized for astigmatism correction in the eye and rangefinders, inducing astigmatism by elongating a point of light into a line. They find extensive application in barcode scanning, projection optics systems, laser measurement systems, and holography. Ost Photonics offers cylindrical concave lens in plano-concave or plano-convex configurations. Basics about Cylindrical Lenses LENSES MATERIALS ILLUSTRATION PROPERTIES AND APPLICATIONS CYLINDRICAL LENS BK7/ Fused Silica/CaF2 /other optical glass Used to provide focusing power in one section only. For illumination or detection of light from line sources. Also used for the anamorphic compression of beams and images. Specifications of Cylindrical Lenses Material Schott N-BK7, CDGM H-K9L, Fused silica, CaF2, Sapphire Design wavelength 546.07nm Design index (bk7) 1.51680 for BK7, 1.45846 for Fused Silica Diameter tolerance +0.0, 0.15mm +0.0, 0.05mm Paraxial focal length �±2% �±0.5% Centration Clear aperture 80% 90% Surface quality 60-40 scratch and dig 10-5 Scratch and dig Surface irregularity Protective bevel 0.25 + 0.25, -0.0mm 0.2 �± 0.1mm Coating Uncoating, AR or Single layer MgF2 coating upon request What Is a Cylindrical Lens Used For? Cylindrical lenses are specialized optical components used primarily to correct astigmatism, a common refractive error in the eye. Unlike spherical lenses, which have the same curvature in all directions, cylindrical lenses have curvature in only one direction. This unique property allows them to focus light into a line rather than a point, making them ideal for applications requiring precise control over light direction and focus. OST Photonics, a leader in cylindrical optics, offers high-quality cylindrical lenses designed to meet various optical needs.
