Optics

Biconvex Lenses / Double Convex Lenses

Biconvex lenses also known as double convex lenses are simple optical lenses with two convex spherical surfaces, surfaces which bulge out from the center. These two convex surfaces have the same ...
EurekAlert!

Ultra-long focal depth annular lithography for fabricating micro ring-shaped metasurface unit cells on highly curved substrates

Recently, Professor Lu Zhengang's team at Harbin Institute of Technology proposed a non-microscope objective lithography method that utilizes the spherical convex lens aberration, enabling laser beams ...
Optics

Supply BK7 Bi-convex lens

Supply BK7 Bi-convex lens BK7 Bi-convex lens EFL:10mm---1000mm Dia:6.00mm--75.00mm Material: BK7(China K9) S/D:40/20 Centration:3arcmin Customer design Supply BK7 Bi-convex lens BK7 Bi-convex lens EFL ...
BBC

Refraction and lenses

Light is refracted when it enters a material like water or glass. Depending on the density of the material, light will reduce in speed as it travels through, causing it to change direction. Ray ...