公开(公告)号：EP1955117A1

公开(公告)日：2008-08-13

申请号：EP06808548.9

申请日：2006-11-15

申请人： Evans, Richard Howard

发明人： WINTERBOTTOM, David, Roy ,  WILTSHIRE, John, David ,  EVANS, Richard, Howard

IPC分类号： G03H1/30

CPC分类号： G03H1/268 ,  G03H1/0248 ,  G03H1/181 ,  G03H1/202 ,  G03H1/265 ,  G03H2001/0027 ,  G03H2001/0417 ,  G03H2001/0482 ,  G03H2001/0497 ,  G03H2001/186 ,  G03H2001/2271 ,  G03H2001/2273 ,  G03H2222/15 ,  G03H2222/18 ,  G03H2240/42 ,  G03H2240/53 ,  G03H2250/40 ,  G03H2260/16

摘要： The present invention relates to a method and apparatus for producing a hologram, in particular a dot matrix volume hologram. A holographic recording system (1) comprises a source of optical radiation (7), a transparent or partially transparent holographic recording medium 6 and an optical system (10). The recording medium (6) has a first side (25), a second side (26) and a recording volume (36), the second side (26) being opposite to said first side (25) and the recording volume (36) being between said sides (25, 26). The recording medium (6) is positioned between the source of optical radiation (7) and the optical system (10) so that the first side (25) is presented towards the source of optical radiation (7) and the second side (26) is presented towards the optical system. The source (7) is arranged to project incident optical radiation (20) onto the first side (25) and through the recording volume (36) towards the optical system (10). The optical system (10) is arranged to redirect (32) the optical radiation back onto said second side (26) and into the recording volume (36) so that said incident (20) and redirected (32) optical radiation intersect within the recording volume (36) at an obtuse angle (34) to create an interference pattern (38) from which a holographic recording may be made.