Shanghai Optics manufactures high quality plano-convex lens; optical lenses with a positive focal length. These all-purpose lenses are available in a wide variety of sizes, substrates, and coatings, ...

Plano convex lenses, Plano concave lenses, Bi-convex lenses, Bi-concave lenses, meniscus lenses, achromatics lenses, ball lenses, aspheral lenses and cylindrical lenses Specifications: Material: Bk7, ...

FRESNEL, in 1820, devised and constructed a lens for first order lights of 920 mm. radius. It was composed of a plano-convex lens, with five refracting prisms concentric with it, and four segments of ...