ClassID:

174915

G02B27/4238 - CPC Classification

Classification description:

Optical systems or apparatus not provided for by any of the groups -; Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application in optical recording or readout devices

Recent Application in this class:
#1
20250290854
2025-09-18

ARRAYS OF INTEGRATED ANALYTICAL DEVICES

#2
20250199317
2025-06-19

Head-Mounted Display with Volume Substrate-Guided Holographic Continuous Lens Optics

#3
20230314325
2023-10-05

Arrays of integrated analytical devices

#4
20230176268
2023-06-08

OPTICAL DIFFRACTION ELEMENT AND OPTICAL COMPUTING SYSTEM

#5
20210325306
2021-10-21

Arrays of integrated analytical devices

#6
20210263319
2021-08-26

HEAD-MOUNTED DISPLAY WITH VOLUME SUBSTRATE-GUIDED HOLOGRAPHIC CONTINUOUS LENS OPTICS

#7
20210258700
2021-08-19

OPTICAL MICROPHONE

#8
20200175269
2020-06-04

EYE TRACKER AND DISPLAY

#9
20200110273
2020-04-09

Low-height projector assembly

#10
20200018703
2020-01-16

Arrays of integrated analytical devices

#11
20190101381
2019-04-04

Optical sensing device and structured light projector

#12
20180180548
2018-06-28

Arrays of integrated analytical devices

#13
20180151194
2018-05-31

Image display device and light guiding device with diffraction elements

#14
20160116757
2016-04-28

Optical encoder

#15
20160061740
2016-03-03

Arrays of integrated analytical devices

#16
20120262795
2012-10-18

Concentric ring dielectric lens

#17
20120163157
2012-06-28

Optical Element and Optical Pickup Device

#18
20120094066
2012-04-19

INTEGRATED MICRO-OPTICAL SYSTEMS AND CAMERAS INCLUDING THE SAME

#19
20120075979
2012-03-29

Optical element and objective lens through which a plurality of light beams having different design wavelengths pass

#20
20110194396
2011-08-11

Optical pickup apparatus, objective optical element and optical information recording reproducing apparatus

#21
20110141567
2011-06-16

Selective diffractive optical element and a system including the same

#22
20110032811
2011-02-10

Diffractive optical element, objective optical system including the same, and optical pickup including the same

#23
20100322060
2010-12-23

Objective lens, optical pickup and optical disc apparatus

#24
20100322059
2010-12-23

Objective lens, optical pickup, and optical disc apparatus

#25
20100284262
2010-11-11

Optical pickup apparatus, objective optical element and optical information recording reproducing apparatus

#26
20100157777
2010-06-24

Optical head and optical disc device

#27
20100155977
2010-06-24

Optical device and method of producing the same

#28
20100128592
2010-05-27

Objective lens for optical pickup device, and optical pickup device

#29
20100103798
2010-04-29

OPTICAL DATA RECORDING AND IMAGING ON MEDIA USING APOCHROMATIC LENSES AND A LIGHT SEPARATING MEANS

#30
20100074077
2010-03-25

OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE

#31
20100054108
2010-03-04

Objective lens for optical pickup device, optical pickup device and optical information recording/reproducing apparatus

#32
20100020671
2010-01-28

PHASE CORRECTION ELEMENT AND OPTICAL HEAD DEVICE

#33
20090323502
2009-12-31

Composite optical element

#34
20090190459
2009-07-30

Chromatic diffractive optical element corrector, optical system including the same and associated methods

#35
20090147363
2009-06-11

Composite optical element

#36
20090135487
2009-05-28

Diffraction grating device and optical apparatus

#37
20090028033
2009-01-29

Objective optical element for optical pickup device, optical element for optical pickup device, objective optical element unit for optical pickup device and optical pickup device

#38
20080310023
2008-12-18

Method of making an optical system

#39
20080198465
2008-08-21

Optical pickup device and optical disk device

#40
20080175109
2008-07-24

Phase shift grating for phase shift differential push-pull tracking

#41
20080128844
2008-06-05

Integrated micro-optical systems and cameras including the same

#42
20080084809
2008-04-10

Optical head device, aberration correction method and optical information processing apparatus

#43
20080074757
2008-03-27

Object lens device with high numerical aperture and optical pickup device adopting the same

#44
20080003528
2008-01-03

Photo-masks and methods of fabricating surface-relief grating diffractive devices

#45
20070258145
2007-11-08

Diffractive optical element, objective optical system including the same, and optical pickup including the same

#46
20070242591
2007-10-18

Objective lens and optical pickup apparatus

#47
20070211609
2007-09-13

Optical pickup apparatus, objective optical element and optical information recording reproducing apparatus

#48
20070211608
2007-09-13

Optical pickup apparatus, objective optical element and optical information recording reproducing apparatus

#49
20070211607
2007-09-13

Optical pickup apparatus, objective optical element and optical information recording reproducing apparatus

#50
20070211606
2007-09-13

Optical pickup apparatus, objective optical element and optical information recording reproducing apparatus

#51
20070139778
2007-06-21

Diffraction grating device and optical apparatus

#52
20070121028
2007-05-31

Three-dimensional autostereoscopic display and method for reducing crosstalk in three-dimensional displays and in other similar electro-optical devices

#53
20070109642
2007-05-17

Optical systems including a chromatic diffractive optical element corrector and associated methods

#54
20070035837
2007-02-15

Optical pickup and optical disc apparatus

#55
20060291363
2006-12-28

Objective optical system and optical pickup apparatus

#56
20060176559
2006-08-10

Diffractive element, method of manufacturing the same, optical pickup device, and optical disc apparatus

#57
20060158997
2006-07-20

Diffraction element and optical pick-up apparatus having the same

#58
20060146422
2006-07-06

Diffractive optical element, objective lens module, optical pickup, and optical information recording and reproducing apparatus

#59
20060114796
2006-06-01

Design method of optical element and optical element through which a plurality of light beams having different design wavelengths pass

#60
20060114566
2006-06-01

Diffraction grating device and optical apparatus

#61
20060114535
2006-06-01

Laser light source device, hologram apparatus, and method for detecting laser light

#62
20060098287
2006-05-11

Diffractive optical element and optical pickup device using the same

#63
20060044638
2006-03-02

Hologram laser unit and optical pickup apparatus

#64
20060033913
2006-02-16

Diffraction element and optical head device

#65
20060012847
2006-01-19

Aberration correction element, optical pickup, and information equipment

#66
20050254399
2005-11-17

Object lens for optical pickup device, optical pickup device and optical information recording/reproducing device

#67
20050226122
2005-10-13

Phase correction element and optical head device

#68
20050207011
2005-09-22

Diffractive optical system

#69
20050195485
2005-09-08

Optical device, method of producing the same, optical pickup, and optical information processing device

#70
20050168821
2005-08-04

Diffractive optical element and optical pickup apparatus

#71
20050116137
2005-06-02

Optical pick-up device for recording/reading information on optical recording medium

#72
20050073747
2005-04-07

Diffractive optical element, manufacturing method thereof, optical pickup apparatus and optical disk drive apparatus

#73
20050036204
2005-02-17

Optical element, lens and optical head device

#74
20050018297
2005-01-27

Optical component and optical pickup apparatus

#75
20050002118
2005-01-06

Objective lens for optical pick-up