Patent · US Active

Device for producing a high-resolution reflection hologram

US8405893B2 · kind B2 · utility

1Cited by

2References

11Claims

0Family size

Assignee

Prufbau Dr. Ing. H. Durner GmbH · DE

Inventors

Peter Bauernschmid · Maulbronn, DE
Gerhard Hochenbleicher · Fürstenfeldbruck, DE

Key dates

Filing date	May 13, 2008
Grant date	Mar 26, 2013
Priority date	—
Expiry date	Aug 19, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG03H2260/12
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A device for producing a reflection hologram by means of a master, which is formed by a substrate on which a saw-toothed shaped structure is formed by molding, mechanical or lithographical methods. The structure has a reflective finish, such that the desired surface is produced on the structure. The light of a laser light source is expanded by means of an optical device, thus enabling a beam having a predetermined beam width to be obtained. The beam radiates the master and is reflected by the structure at an angle α in relation to the incident beam. Above the smooth surface arranged over the structure a photopolymer-film, containing a photo-sensitive layer that is disposed at a distance in relation to the structure, is arranged and the reflection hologram is produced in the photo-sensitive layer.

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