ClassID:

198113

G11B7/1365 - CPC Classification

Classification description:

Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor; Heads, e.g. forming of the optical beam spot or modulation of the optical beam; Means for guiding the beam from the source to the record carrier or from the record carrier to the detector Separate or integrated refractive elements, e.g. wave plates

Sub-classes:
Recent Application in this class:
#1
20240331732
2024-10-03

Method and system for forming birefringent voxels

#2
20180268856
2018-09-20

Optical pickup

#3
20160232933
2016-08-11

Hologram reproducing apparatus and hologram reproducing method

#4
20160196849
2016-07-07

Holographic data storage system

#5
20160118076
2016-04-28

Optical information recording/reproducing apparatus

#6
20150318012
2015-11-05

Optical information reproduction apparatus and optical information reproduction method

#7
20150318010
2015-11-05

Optical pickup and optical recording and reproducing device

#8
20140071394
2014-03-13

Optical diffraction element, optical pickup, and optical diffraction element manufacturing method

#9
20140010064
2014-01-09

Optical pickup device and optical disk drive including the same

#10
20130271823
2013-10-17

Modulated signal detecting apparatus and modulated signal detecting method

#11
20130194905
2013-08-01

OPTICAL PICKUP AND OPTICAL DISK DEVICE USING OPTICAL PICKUP

#12
20120207007
2012-08-16

Reflection type wavelength plate and optical head device

#13
20120201114
2012-08-09

OPTICAL PICKUP, OPTICAL RECORDING/REPRODUCING DEVICE, COMPUTER, OPTICAL DISK RECORDER, AND MINUTE SPOT FORMING METHOD

#14
20120195180
2012-08-02

OPTICAL PICKUP APPARATUS

#15
20120176881
2012-07-12

OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME

#16
20120099413
2012-04-26

Compound quarter-wave retarder for optical disc pickup heads

#17
20120069724
2012-03-22

Optical pickup apparatus

#18
20120069722
2012-03-22

Reproducing device and optical path length servo control method

#19
20120008475
2012-01-12

Method of controlling light, and optical pickup device and optical disk drive adopting the method

#20
20110276989
2011-11-10

OPTICAL PICKUP DEVICE AND OPTICAL DISC DRIVE

#21
20110205880
2011-08-25

OPTICAL BEAM FORMING APPARTUS

#22
20110205879
2011-08-25

OPTICAL PICK-UP DEVICE AND METHOD FOR MANUFACTURING THE SAME

#23
20110194397
2011-08-11

Optical pickup device

#24
20110188368
2011-08-04

Optical information recording/reproduction method and device

#25
20110182165
2011-07-28

Optical pickup device and optical disc apparatus using same

#26
20110170397
2011-07-14

Optical pickup apparatus

#27
20110134742
2011-06-09

Pickup apparatus, optical recording and reproduction apparatus, and recording and reproduction method

#28
20110102746
2011-05-05

Half-wave plate, optical pickup device, polarization conversion element, and projection display device

#29
20110044151
2011-02-24

ELECTRONIC DEVICE

#30
20110002216
2011-01-06

OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE

#31
20100329102
2010-12-30

Optical pickup device

#32
20100322062
2010-12-23

OPTICAL PICKUP AND OPTICAL DISC DEVICE

#33
20100309768
2010-12-09

Hologram disc reading and writing apparatus and hologram disc reading apparatus

#34
20100246368
2010-09-30

Laminated half-wave plate, optical pickup device, polarization converter, and projection display apparatus

#35
20100214903
2010-08-26

Extraction optical system and optical head device including the same

#36
20100188961
2010-07-29

Optical disc apparatus

#37
20100128593
2010-05-27

PHASE DIFFERENCE ELEMENT AND OPTICAL HEAD APPARATUS

#38
20100103800
2010-04-29

Apparatus with a pickup for reading data from or writing data to an optical storage medium

#39
20100103084
2010-04-29

Quarter wave plate, optical pickup device, and reflective liquid crystal display device

#40
20100091349
2010-04-15

Recording and reproducing device and polarization direction controlling method

#41
20100054105
2010-03-04

Optical phase controller and optical phase control method

#42
20100054103
2010-03-04

Optical information recording/reproducing apparatus and method

#43
20100020669
2010-01-28

Method for holographic data retrieval by quadrature homodyne detection

#44
20090323501
2009-12-31

Optical pickup and information device

#45
20090323496
2009-12-31

Beam applying method, beam applying apparatus, and optical recording medium

#46
20090310468
2009-12-17

Optical pickup apparatus for use on a multi-layered optical information storage medium

#47
20090274029
2009-11-05

OPTICAL PICKUP AND INFORMATION DEVICE

#48
20090268585
2009-10-29

Wavelength selecting wavelength plate and optical head device using it

#49
20090268581
2009-10-29

OPTICAL PICK-UP DEVICE

#50
20090267245
2009-10-29

Transmission Type Optical Element

#51
20090251750
2009-10-08

Polarization-based holographic optical reproducing apparatus including dc modulating element

#52
20090219593
2009-09-03

Reflection type collinear holographic storage system

#53
20090196147
2009-08-06

Optical pickup apparatus

#54
20090190463
2009-07-30

OPTICAL PICK-UP UNIT WITH TWO-MIRROR PHASE SHIFTER

#55
20090153929
2009-06-18

APPARATUS FOR RECORDING/REPRODUCING HOLOGRAPHIC INFORMATION

#56
20090153927
2009-06-18

Holographic data storage medium and apparatus and method for recording/reproducing holographic data to/from the same

#57
20090147661
2009-06-11

Optical information processing apparatus, optical pick-up device and optical recording disc system

#58
20090097384
2009-04-16

Laminated wave plate and optical pickup device using the same

#59
20090080313
2009-03-26

Optical information recording and reproducing device

#60
20090073837
2009-03-19

OPTICAL PICKUP

#61
20090052312
2009-02-26

RECORDING APPARATUS, REPRODUCING APPARATUS, RECORDING METHOD, REPRODUCING METHOD, AND RECORDING MEDIUM

#62
20090046548
2009-02-19

Optical head apparatus and optical information recording/reproducing apparatus

#63
20090040903
2009-02-12

Hologram recording/reproducing apparatus and light source apparatus

#64
20090034402
2009-02-05

Optical Head Device, Optical Information Device, Optical Disc Player, Car Navigation System, Optical Disc Recorder, and Optical Disc Server

#65
20090034401
2009-02-05

OPTICAL DISK APPARATUS

#66
20090016191
2009-01-15

OPTICAL HEAD DEVICE

#67
20080310285
2008-12-18

Laminated wave plate and optical pickup using the same

#68
20080304394
2008-12-11

Optical pickup and optical disk apparatus

#69
20080285395
2008-11-20

Beam applying method, optical recording medium, and recording and reproducing apparatus

#70
20080267042
2008-10-30

OPTICAL PICKUP DEVICE

#71
20080267039
2008-10-30

Holographic recording apparatus, holographic reproducing apparatus and holographic recording and reproducing apparatus

#72
20080267019
2008-10-30

Optical Pickup Apparatus and Optical Disk Drive

#73
20080253261
2008-10-16

Optical Pickup Having Aberration Correction

#74
20080239929
2008-10-02

OPTICAL HEAD DEVICE

#75
20080239927
2008-10-02

OPTICAL HEAD DEVICE

#76
20080224028
2008-09-18

Optical head apparatus and optical information recording or reproducing apparatus

#77
20080205247
2008-08-28

Multi-Radiation Beam Optical Scanning Device

#78
20080186834
2008-08-07

Optical pickup device and optical disk apparatus

#79
20080186833
2008-08-07

Optical pickup device and optical disk apparatus

#80
20080180799
2008-07-31

Laminated wave plate and optical pickup using the same

#81
20080175129
2008-07-24

Optical pickup, optical disc apparatus, integrated coupling lens, integrated prism, and optical information equipment

#82
20080165657
2008-07-10

Optical pickup apparatus and optical disk drive apparatus

#83
20080165643
2008-07-10

Multivalued information reproducing method and multivalued information reproducing apparatus

#84
20080159091
2008-07-03

Optical pickup device and optical recording medium driving device

#85
20080151735
2008-06-26

Optical pickup, optical disc device, polarization adjustment plate, and optical device

#86
20080123507
2008-05-29

OPTICAL ELEMENT AND OPTICAL PICKUP APPARATUS

#87
20080117789
2008-05-22

OPTICAL PICKUP DEVICE

#88
20080101201
2008-05-01

Optical Pickup Device

#89
20080074963
2008-03-27

OPTICAL PICKUP DEVICE AND OPTICAL DISK DEVICE

#90
20080068973
2008-03-20

Optical pickup

#91
20080062486
2008-03-13

APPARATUS FOR RETROREFLECTING REFERENCE BEAM AND HOLOGRAPHIC INFORMATION RECORDING/REPRODUCING DEVICE EMPLOYING THE SAME

#92
20080056102
2008-03-06

Optical pickup apparatus

#93
20080049583
2008-02-28

OPTICAL PICKUP DEVICE

#94
20080043328
2008-02-21

Wave retardation plate and optical pickup device has them

#95
20080037399
2008-02-14

Optical disk apparatus compatible with different types of mediums adapted for different wavelengths

#96
20080031099
2008-02-07

Optical pickup and optical disc device

#97
20080025189
2008-01-31

Optical pickup apparatus

#98
20080019252
2008-01-24

Optical recording method, optical recording apparatus, optical recording medium, optical reproducing method, and optical reproducing apparatus

#99
20080018969
2008-01-24

Optical Integrated Unit Including Hologram Element and Optical Pickup Device

#100
20070274171
2007-11-29

Optical disk apparatus

#101
20070253311
2007-11-01

OPTICAL PICK-UP APPARATUS AND OPTICAL DISC APPARATUS

#102
20070247995
2007-10-25

COMPATIBLE OPTICAL PICKUP HAVING HIGH EFFICIENCY AND OPTICAL RECORDING AND/OR REPRODUCING APPARATUS INCLUDING THE SAME

#103
20070242355
2007-10-18

WAVELENGTH PLATE AND OPTICAL HEAD DEVICE

#104
20070242354
2007-10-18

Optical head device with film wavelength plate incorporated therein

#105
20070210243
2007-09-13

Optical pickup

#106
20070210238
2007-09-13

Optical pickup apparatus which records and/or reproduces information using different types of optical information recording mediums

#107
20070183297
2007-08-09

Compositive wave plate

#108
20070165300
2007-07-19

Wave plate for laser optical system

#109
20070159932
2007-07-12

Optical head device

#110
20070147218
2007-06-28

Optical element, optical pickup unit, and optical disk drive unit

#111
20070127337
2007-06-07

Optical recording medium driving device

#112
20070127130
2007-06-07

Wavelength plate

#113
20070121472
2007-05-31

Method and apparatus capable of detecting spherical aberration caused by a storage medium

#114
20070104072
2007-05-10

Extraction optical system, optical pick-up device and optical disc apparatus

#115
20070104046
2007-05-10

Optical pickup device

#116
20070103750
2007-05-10

Apparatus and method for recording and reproducing optical information

#117
20070086307
2007-04-19

Holographic device

#118
20070076297
2007-04-05

TRANSMISSION TYPE OPTICAL ELEMENT

#119
20070053274
2007-03-08

Compatible optical pickup and optical recording and/or reproducing apparatus employing the same

#120
20070053271
2007-03-08

Wave plate

#121
20070051870
2007-03-08

Optical pickup apparatus and information recording and reproducing apparatus

#122
20070030770
2007-02-08

Optical pickup and optical information processing apparatus with light sources of three different wavelengths

#123
20070025207
2007-02-01

Optical pickup and optical disk apparatus

#124
20070008858
2007-01-11

Optical pickup and optical disc apparatus

#125
20070003775
2007-01-04

Laminated wavelength plate

#126
20060291023
2006-12-28

Operational mode performance of a holographic memory system

#127
20060280065
2006-12-14

Optical pickup device

#128
20060274610
2006-12-07

Optical pickup device and recording and/or reproducing apparatus

#129
20060274417
2006-12-07

Optical integrated unit and optical pickup

#130
20060256698
2006-11-16

Optical scanning device

#131
20060221799
2006-10-05

Optical disk apparatus compatible with different types of mediums adapted for different wavelengths

#132
20060198276
2006-09-07

Optical recording medium driving device

#133
20060158977
2006-07-20

Optical element, optical pickup unit, and optical disk drive unit

#134
20060146682
2006-07-06

Achromatic polarization devices for optical disc pickup heads

#135
20060140078
2006-06-29

Optical pickup device

#136
20060140070
2006-06-29

Optical information reproduction device

#137
20060126459
2006-06-15

Optical pickup device with phase shift mirror

#138
20060098552
2006-05-11

Optical information processing apparatus, optical pick-up device and optical recording disc system

#139
20060077858
2006-04-13

Wavelength plate, optical element, and optical pickup

#140
20060056276
2006-03-16

Optical disk apparatus using mechanism for controlling spherical aberration

#141
20060050341
2006-03-09

Apparatus for recording optical information

#142
20060028932
2006-02-09

Optical pickup device

#143
20060001969
2006-01-05

Gratings, related optical devices and systems, and methods of making such gratings

#144
20050276201
2005-12-15

Optical head device

#145
20050274870
2005-12-15

Optical head device and optical information recording or reproducing device

#146
20050259553
2005-11-24

Optical head device and optical information recording/reproduction apparatus

#147
20050237902
2005-10-27

Optical disk apparatus with a wavelength plate having a two-dimensional array of birefringent regions

#148
20050232121
2005-10-20

Refracting objective optical system and optical recording/reproducing device using the same

#149
20050213210
2005-09-29

Phase difference plate and optical head device

#150
20050213209
2005-09-29

Molding method, cooling apparatus and optical element

#151
20050201422
2005-09-15

Optical element and optical pickup apparatus

#152
20050180296
2005-08-18

Laminated wave plate and optical pickup using the same

#153
20050169153
2005-08-04

Two wavelength laser module and optical pickup device

#154
20050157627
2005-07-21

Optical pickup device and optical disk device

#155
20050141391
2005-06-30

Optical pickup

#156
20050141067
2005-06-30

Hologram recording medium and recording and reproducing system

#157
20050128544
2005-06-16

Holographic ROM system

#158
20050117500
2005-06-02

Light emitting module and optical pickup apparatus and method employing the same

#159
20050117497
2005-06-02

Optical element and optical head device using it, and optical information device using this optical head device, and computer, optical disk player, car navigation system, optical disk recorder and optical disk server using this optical information device

#160
20050105449
2005-05-19

Optical scanning device

#161
20050087678
2005-04-28

Optical head apparatus and optical information recording or reproducing apparatus

#162
20050062916
2005-03-24

Laminated phase plate and optical pickup using thereof

#163
20050052968
2005-03-10

Optical pickup using a wedge type beam splitter

#164
20050048267
2005-03-03

Optical element, optical element wafer, and manufacturing methods for the same

#165
20050047310
2005-03-03

Spherical aberration corrector plate comprising two wedge-shaped plates enabled to relatively shift

#166
20050035269
2005-02-17

Optical pickup device

#167
20050030878
2005-02-10

Compatible optical pickup

#168
20050030875
2005-02-10

Holographic optical information recording and reproducing apparatus which parallel-translates light ray flux to correct tilt

#169
20050007640
2005-01-13

Optical scanner with micro-optics for beam combination

#170
20050002288
2005-01-06

Optical pickup device and method for controlling the same

#171
20050001141
2005-01-06

Optical scanning device

#172
19003937
2025-12-09

Information verification method and related device