Patent · US Active

Method for manufacturing an optical microlens array

US12092843B2 · kind B2 · utility

0Cited by

3References

14Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Oliver Pabst · Hamburg, DE
Erik Beckert · Arnstadt, DE
Peter Dannberg · Jena, DE

Key dates

Filing date	Aug 19, 2019
Grant date	Sep 17, 2024
Priority date	—
Expiry date	Jul 26, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG02B1/14
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to an optical microlens array and to a method for manufacturing an optical microlens arrays, wherein the method includes, among other things: providing a substrate having a first side and an opposite second side. The method further includes applying a photoresist to the first side of the substrate at least in portions, and structuring the photoresist such that the structured photoresist remains at predetermined locations on the first side of the substrate where one optical microlens each is to be later arranged. In addition, the method includes applying a hydrophobic coating to the first side of the substrate and subsequently removing the structured photoresist including the hydrophobic coating located thereon from the first side of the substrate. Furthermore, according to the invention, one microlens each is arranged on the spots of the first side of the substrate that are freed from the structured photoresist.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.