Micro- and nano-hot embossing method for optical glass lens arrays

Abstract

A micro- and nano-hot embossing method for an optical glass lens array, including: preparing a mold with a micro-hole array by micro EDM, where the micro-hole array matches an optical glass lens array and the mold is made of a hard metal material which is conductive and meets strength and temperature requirements; preparing a nano nitride-based graded composite coating on a surface of the mold by magnetron sputtering; and pre-fabricating a glass preform and then placing the glass preform on the surface of the mold; heating the glass preform and hot embossing by a glass molding machine in vacuum; cooling in nitrogen atmosphere; and demolding to produce the optical glass lens array. The micro- and nano-hot embossing method of the present invention improves the surface quality of the optical glass lens array and reduces the cost and difficulty for manufacturing.

Dependencies are inferred from the claim text.