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2010-11-01T03:22:47Z
2010-12-10T17:04:19+01:00
Jouve S.A., EPO - Publication - KB, TaggedPDF v1.27
EP-0334631-A2-19890927
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EP-0334631-A2-19890927
A light beam scanning apparatus comprising a rotatable holographic disk (4) having a hologram which is constructed by an interference of a reference wave (13) and an object wave (9), which is a coma wave, the coma wave having a focal length which decreases toward the outer periphery from the inner periphery of the holographic disk in a radial direction (4). The focal length has a different direction perpendicular to the radial direction, so that when the hologram of the holographic disk which rotates is reconstructed by a reconstruction wave, the scanning is effected by the beams diffracted by the hologram.
A light beam scanning apparatus comprising a rotatable holographic disk (4) having a hologram which is constructed by an interference of a reference wave (13) and an object wave (9), which is a coma wave, the coma wave having a focal length which decreases toward the outer periphery from the inner periphery of the holographic disk in a radial direction (4). The focal length has a different direction perpendicular to the radial direction, so that when the hologram of the holographic disk which rotates is reconstructed by a reconstruction wave, the scanning is effected by the beams diffracted by the hologram.
en
European Patent Office
EP0334631
EP 0334631
G02B 26/10
G02B 05/32
Beam scanner
Beam scanner - European Patent Office - EP 0334631 A2
Beam scanner - European Patent Office - EP 0334631 A2
Adobe PDF Library 8.0
"EP0334631"; "EP 0334631"; "G02B 26/10"; "G02B 05/32"; "Beam scanner"
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0334631
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1989-09-27
89302835
1989-03-22
JP
7263388
1988-03-25
JP
1855989
1989-01-28
G02B 26/10
G02B 05/32
FUJITSU LIMITED
Hasegawa, Shin-ya
Yamagishi, Fumio
Ikeda, Hiroyuki
Iwata, Shigetake
Beam scanner
Lichtbündelabtaster
Beam scanner
Dispositif de balayage d'un faisceau de lumière
A light beam scanning apparatus comprising a rotatable holographic disk (4) having a hologram which is constructed by an interference of a reference wave (13) and an object wave (9), which is a coma wave, the coma wave having a focal length which decreases toward the outer periphery from the inner periphery of the holographic disk in a radial direction (4). The focal length has a different direction perpendicular to the radial direction, so that when the hologram of the holographic disk which rotates is reconstructed by a reconstruction wave, the scanning is effected by the beams diffracted by the hologram.
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