초록 ▼

A method for making microlens molds and microlens array molds is described which utilizes a spinning half radius diamond cutting member operated in a plunge cut in a technique similar to milling to cut the optical surface into a diamond turnable material. The method can be used to make high sag lens

A method for making microlens molds and microlens array molds is described which utilizes a spinning half radius diamond cutting member operated in a plunge cut in a technique similar to milling to cut the optical surface into a diamond turnable material. The method can be used to make high sag lens molds with high accuracy. Microlens array molds can be made with a high degree of uniformity and a nearly 100% fill factor.

대표청구항 ▼

1. Method of making a precision mold for a micro-sized optical article, comprising the steps of:(a) providing a substrate indexable to expose one a plurality of milling positions; (b) providing a forming element having a half-radius, rotatable hardened cutting member, said half-radius, hardened cutt

1. Method of making a precision mold for a micro-sized optical article, comprising the steps of:(a) providing a substrate indexable to expose one a plurality of milling positions; (b) providing a forming element having a half-radius, rotatable hardened cutting member, said half-radius, hardened cutting member having a predetermined shape for forming a micro-sized mold cavity at any one of said plurality of milling positions on said substrate; (c) positioning said half-radius, rotatable hardened cutting member into a milling relationship with any one of said plurality of milling positions on said substrate; and, (d) milling said substrate at any one of said plurality of milling positions on said substrate with said half-radius, rotatable hardened cutting member to form a predetermined shaped micro-sized mold cavity for molding a micro-sized optical article.