Canon Exhibits High-precision Metal Mold for Resin Lens
Canon Mold Co Ltd exhibited a metal mold that has a high processing accuracy and is designed for an optical component at Intermold 2010, an exhibition of metal molding technologies, which took place from April 14 to 17, 2010, in Osaka City, Japan.
It is a metal mold used to form the secondary imaging lens for the autofocus (AF) unit of a digital single-lens reflex (SLR) camera with resin. Its form accuracy and positional accuracy are as high as 0.6μm and 0.2μm, respectively.
A secondary imaging lens is a small part made by connecting spheres with a radius of 1.5mm and a width of 1.3mm on a resin plate. There are four spheres in the center, and two spheres are located on each of the right and left sides of the four spheres.
Canon Mold realized the metal mold by using its metal molding technology along with Canon Inc's machine tools and measurement apparatuses. As for the resin, Canon Mold employed the Zeonex, Zeon Corp's thermoplastic high-function resin COP (cyclo-olefin polymer).