Cylindrical lens element YTL1904

meniscusBK7zinc selenide

Place of Origin: China Brand Name: YT Model Number: YTL1904 Use: Optical Structure: convex-concave Shape: Meniscus Marterial: N-BK7,borofloat,sapphire,CaF2,Znse,Ge,Si Diameter: 1-500mm Dimension Tolerance: +/-0.1mm Thickness Tolerance:: +/-0.1mm Transmittance: > 90% Surface accuracy: 1/4, 1/2 Lambda (as required) surface quality:10/5, 20/10, 40/20 (as required) Parallelism:: 1arcsec, 1arcmin, 3arcmin (as required) Coating:: Uncoated or Coated (as requried) Clear Aperture: >90% Meniscus Cylindrical lens Cylinder Lenses are typically used to focus incoming light to a line, or to change the aspect ratio of an image. Cylindrical Lenses have a single cylindrical surface that causes incoming light to be focused in only a single dimension, stretching the image. Cylinder Lenses are available with positive or negative focal lengths, ideal for laser line generation or anamorphic beam shaping to circularize laser outputs. Meniscus Cylindrical lens Meniscus Cylindrical Lens can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus Lens is used to increase the focal length of another lens while maintaining the angular resolution of the optical assembly. This lens shape is best used when one conjugate is relatively far from the lens.