Patent · US Expired

Device and method for reading information stored in a phosphor layer

US6369402B1 · kind B1 · utility

13Cited by

6References

14Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Herbert Gebele · Sauerlach, DE
Paul Leblans · Kontich, BE
Jurgen Muller · Wulfen, DE
Ralph Thoma · Augsburg, DE

Key dates

Filing date	Nov 30, 1999
Grant date	Apr 9, 2002
Priority date	—
Expiry date	Nov 30, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH04N2201/0404
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A device (1) and a method for reading information stored in a phosphor layer (10) is disclosed. The device (1) includes a transparent carrier material (9) on which the phosphor layer (10) to be read is disposed. A radiation source (2) emits an excitation radiation (20) to excite the phosphor layer (10), which in turn emits an emission radiation (26). The emission radiation (26) can be received by a receiver (3). The radiation source (2) is arranged on one side of the transparent carrier material (9), whereas the receiver (3) is arranged on the other side of the transparent carrier material (9), thereby defining an optical path between the radiation source (2) and the receiver (3). According to the invention, a reflective layer (21, 22; 30, 31, 32) for reflecting at least a portion of the excitation radiation (20) is arranged in the optical path.

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