Patent · US Active

Apparatus for reducing coherence of a laser beam

US10481408B2 · kind B2 · utility

0Cited by

7References

13Claims

0Family size

Assignee

CHRISTIE DIGITAL SYSTEMS USA, INC. · US

Inventors

Daniel Adema · Kitchener, CA
Joseph Ma · Waterloo, CA

Key dates

Filing date	Sep 30, 2016
Grant date	Nov 19, 2019
Priority date	—
Expiry date	Sep 24, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/642
WIPO fieldOptics
WIPO sectorInstruments

Abstract

There is provided an an apparatus for reducing coherence of a laser beam, which apparatus comprises a rectangular chamber having a first, second, and third walls each comprising a reflective inner surface, and a fourth wall comprising a beam splitter. The fourth wall is configured to transmit a portion of the laser beam into the chamber to form an input beam incident upon the first wall. The first wall is configured to reflect the input beam onto the second wall, which is configured to reflect the input beam onto the third wall, which is configured to reflect the input beam onto the fourth wall. The fourth wall is configured to reflect a portion of the input beam to form a further input beam incident upon the first wall and to transmit another portion of the input beam out of the chamber to form an output laser beam.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.