Microlens having a carrier-free optical interference filter

US10700221B2 · kind B2 · utility

Assignee

• Infineon Technologies Dresden GmbH & Co. KG · DE

Inventors

• Ines Uhlig · Dresden, DE
• Anjo Kirschner · Dresden, DE
• Dirk Offenberg · Dresden, DE
• Beatrice Poetschick · Dresden, DE
• Bjoern Sausner · Dresden, DE
• Thomas Schmitz-Huebsch · Dresden, DE
• Mirko Vogt · Dresden, DE

Key dates

• Filing date: Oct 19, 2018
• Grant date: Jun 30, 2020
• Expiry date: Oct 19, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F77/413

Abstract

An apparatus and a method for producing the apparatus are described, wherein the apparatus includes a substrate with a photodetector and a dielectric arranged on the substrate. Further, the apparatus includes a microlens arranged on a first side of the dielectric. The microlens is configured to steer incident radiation onto the photodetector. Moreover, the apparatus includes a carrier-free optical interference filter. The microlens is arranged between the photodetector and the interference filter, and the interference filter has a plane surface on a side facing away from the photodetector.