Optical arrangement for generating light field distributions and method for operating an optical arrangement

US11668961B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• Technische Universitaet Dresden · DE

Inventors

• Joerg Heber · Dresden, DE
• Matthias Roth · Lambach, DE
• Klaus Janschek · Dresden, DE

Key dates

• Filing date: Mar 15, 2019
• Grant date: Jun 6, 2023
• Expiry date: Apr 23, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G03H2225/55
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A phase and phase/amplitude spatial light modulator arrangement for generating a complex-valued light field with a spatial light modulator, a phase element and an optical system. The phase and amplitude spatial light modulator arrangement is configured to generate a light field that is adjustable in amount and phase.A method realizes operation of a combined spatial light modulator for generating a complex-valued light field. Here, the method includes adapting an optical characteristic in several areas of a phase element.A further method realizes operation of an optical arrangement for modulating different light wavelengths by adjusting several wave influences in several areas of a phase modulator.A last method realizes operation of an optical arrangement by adjusting an amplitude spatial light modulator for modulating light intensities in at least two optical paths.