Patent ID: 6369402
Filing Date: 2002-04-09
Classification: G01T,G03B,H04N

Abstract:
A device (1) for reading information stored in a phosphor layer (10) comprising:a transparent carrier material (9) including the phosphor layer (10); a radiation source (2) for emitting an excitation radiation (20); a receiver (3) for receiving emission radiation (26) emitted by the phosphor layer (10), the radiation source (2) being arranged on one side of the carrier material (9) and the receiver (3) being arranged on the other side of the carrier material (9), so that an optical path is defined between the radiation source (2) and the receiver (3); and at least one thin reflective layer (21, 22; 30, 31, 32) disposed in the optical path between the radiation source (2) and the receiver (3) for reflecting at least a portion of the excitation radiation (20) away from said receiver.