Patent ID: 9044879
Filing Date: 2015-06-02
Classification: B29C,B29L

Abstract:
1. A method of producing wafer lenses comprising: dispensing photo-curable resin into a molding die structured of a flat surface and a molding surface arranged on the flat surface; imprinting so that one of the molding die and a glass substrate is pressed against the other; exposing the photo-curable resin to light rays after the imprinting; and releasing the glass substrate from the molding die; wherein a single cycle, including processes from the dispensing to the releasing, is conducted at a first position of the glass substrate, after that, the molding die is moved relatively with respect to the glass substrate, the single cycle is performed again at a second position of the glass substrate, and the above cycle is repeated plural times so that resin lenses are sequentially molded on the glass substrate, wherein the method of producing wafer lenses further comprises: between the releasing in a first cycle and the dispensing in a second cycle, measuring a distance between a non-lens position of a non-lens area surrounding the resin lenses and a first glass position of a glass surface, which is a surface of the glass substrate against which the resin is pressed by the molding die, and in the imprinting in the second cycle or later, correcting a pressing position of the molding die against the glass substrate, based on the distance measured by the measuring.