Light source having a controllable spectrum

US10295407B2 · kind B2 · utility

Assignee

• Instrument Systems Optische Messtechnik GmbH · DE

Inventors

• Felix Frank · Gemünden am Main, DE
• Markus Estermann · Babensham, DE
• Christoph Kappel · Aschheim, DE
• Florian Schewe · Munich, DE
• Reto Haring · Munich, DE
• Amy M. Winkler · Cupertino, US
• Corin Michael Ricardo Greaves · Munich, DE

Key dates

• Filing date: Jul 21, 2016
• Grant date: May 21, 2019
• Expiry date: Jul 21, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B17/0804
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to an apparatus for generating light, comprising a plurality of light sources (1), —a control device (2), which drives the light sources (1), and a superimposition optical unit, which superimposes the light emitted by the light sources (1) in an exit opening (3). It is an object of the invention to provide an apparatus which is improved compared with the prior art. For this purpose, the invention proposes that the superimposition optical unit comprises a first concave mirror (4), in the focal plane of which the light sources (1) are situated, an optical grating (5), onto which the first concave mirror (4) reflects the light (6) emitted by the light sources (1), and —a second concave mirror (7), which reflects the light (8) diffracted at the optical grating (5) onto the exit opening (3) situated at the focus of the second concave mirror (7).