The process of making a lens with a CNC machine begins by surfacing a waste board and taping an 8mm sheet of cast acrylic down with double-stick tape. The lens is then cut out with an 8mm endmill ...

Avantier’s molded plastic aspheric lenses are designed to eliminate spherical aberration, making them ideal for applications requiring precision optics at a more affordable price. These plastic ...

[Johnie] built himself a CNC woodburner powered by the sun. Like the solar 3D printer we saw last summer, [Johnie]’s build uses a giant Fresnel lens to focus sunlight onto a piece of wood.