The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2004
Filed:
Jun. 12, 2002
Josephus Johannes Maria Braat, Delft, NL;
Hendrik Bokhove, Gouda, NL;
Abstract
The present invention relates to an achromatic phase shift device ( ) for introducing a wavelength independent optical phase shift in a first optical beam ( ) during operation, comprising at least one dispersive element ( ) formed by first refractive means ( ) and second refractive means ( ), the first refractive means ( ) having a first refractive means input plane ( ) for receiving the first optical beam ( ) and a first refractive means output plane ( ) being at a predetermined angle (&bgr;) to each other, the second refractive means ( ) having a second refractive means input plane ( ) and a second refractive means output plane ( ) being positioned parallel to the first refractive means input plane ( ). The device may comprise further pairs ( ) of respective first and second refractive means ( ). The present invention also relates to an interferometer comprising at least one achromatic phase shift device.