Invention Grant
- Patent Title: Device and method for the industrial production of volume reflection holograms with substrate-guided reconstruction beams
-
Application No.: US16064845Application Date: 2016-12-19
-
Publication No.: US10915066B2Publication Date: 2021-02-09
- Inventor: Christian Rewitz , Rainer Hagen , Thomas Fäcke , Günther Walze , Friedrich-Karl Bruder
- Applicant: Covestro Deutschland AG
- Applicant Address: DE Leverkusen
- Assignee: Covestro Deutschland AG
- Current Assignee: Covestro Deutschland AG
- Current Assignee Address: DE Leverkusen
- Agency: Faegre Drinker Biddle & Reath LLP
- Priority: EP15202173 20151222
- International Application: PCT/EP2016/081766 WO 20161219
- International Announcement: WO2017/108704 WO 20170629
- Main IPC: G03H1/02
- IPC: G03H1/02 ; G03H1/20 ; G03H1/04 ; G02B6/34

Abstract:
The invention relates to an apparatus (200, 300, 400, 600) for producing volume reflection holograms with substrate-guided reconstruction beams, comprising: at least one transparent, planar carrier element (210, 310, 410, 610) comprising a first flat side (210.1) and a further flat side (210.2), at least one master element (206, 306, 406, 606) arrangeable at the first flat side (210.1) of the carrier element (210, 310, 410, 610) and at least one optical input coupling element (102, 202, 302, 402, 602) configured to optically couple a light beam (214, 216), wherein provision is made of at least one coupling portion (104, 204, 304, 404, 604) configured to mechanically establish an optical contact between the input coupling element (102, 202, 302, 402) and at least one holographic recording medium (208, 308, 408) providable on the further flat side (210.2) of the carrier element (210, 310, 410) or configured to mechanically establish an optical contact between the further flat side of the carrier element (610) and at least one holographic recording medium (608) providable on a flat side (605) of the optical input coupling element (602), wherein at least the coupling portion (104, 204, 304, 404, 604) is formed from a material with a shear modulus of between 1000 Pa and 50 MPa, preferably of between 30,000 Pa and 30 MPa.
Public/Granted literature
Information query