Refractive production of a concentrically fanned structured bundle of light beams, optical, measuring device with refractive defection element

US8040527B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Martin Kunz · Weil am Rhein, DE
• Anton Schick · Taufkirchen, DE
• Michael Stockmann · Munich, DE

Key dates

• Filing date: Jan 28, 2008
• Grant date: Oct 18, 2011
• Expiry date: May 17, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B27/0927
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention describes an optical deflection element for the refractive production of a spatially structured bundle of light beams fanned concentrically to an optical axis of the deflection element. The optical deflection element has a base body made of optically transparent material, and has a light input and output side. The light input side is configured such that a primary bundle of light beams can be coupled in the base body. The light output side has a cylindrically symmetrical contour, which defines a recess in the base body. The fanning of the primary bundle of light beams is achieved by refraction on rotationally symmetric interfaces, which are variably inclined relative to the optical axis. The invention further relates to an optical measuring device for the three-dimensional measurement of a cavity in an object and a method for producing a concentrically fanned, spatially structured bundle of light beams.