ClassID:

174922

G02B27/4277 - 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 plural diffractive elements positioned sequentially along the optical path being separated by an air space

Recent Application in this class:
#1
20260140369
2026-05-21

WAVEGUIDE STRUCTURE

#2
20250383554
2025-12-18

ACHROMATIC HOLOGRAPHIC PHASE MARKS

#3
20250314890
2025-10-09

IMAGE DISPLAY DEVICE AND DISPLAY DEVICE

#4
20250035953
2025-01-30

DIFFRACTIVE-BASED OPTICAL SYSTEM FOR HEAD-MOUNTED DISPLAY DEVICE

#5
20240159956
2024-05-16

WAVEGUIDES HAVING INTEGRATED SPACERS, WAVEGUIDES HAVING EDGE ABSORBERS, AND METHODS FOR MAKING THE SAME

#6
20240061265
2024-02-22

DUAL-GRATING SPECTRAL BEAM COMBINER

#7
20230401447
2023-12-14

Devices and methods employing optical-based machine learning using diffractive deep neural networks

#8
20230062015
2023-03-02

ACHROMATIC HOLOGRAPHIC PHASE MASKS

#9
20230024787
2023-01-26

DIFFRACTIVE OPTICAL NETWORK FOR RECONSTRUCTION OF HOLOGRAMS

#10
20220413283
2022-12-29

WAVEGUIDE STRUCTURE

#11
20220366253
2022-11-17

Devices and methods employing optical-based machine learning using diffractive deep neural networks

#12
20220327371
2022-10-13

DIFFRACTIVE DEEP NEURAL NETWORKS WITH DIFFERENTIAL AND CLASS-SPECIFIC DETECTION

#13
20220170783
2022-06-02

LENSLESS IMAGER FOR LASER DETECTION

#14
20220155618
2022-05-19

Diffractive deep neural network (D2NN) processing using a single modulation layer

#15
20220099979
2022-03-31

DIFFRACTION OPTICAL MEMBER AND VIRTUAL IMAGE DISPLAY DEVICE

#16
20210397012
2021-12-23

Optical element including at least two diffractive layers

#17
20210373324
2021-12-02

Optical apparatuses and methods

#18
20210341764
2021-11-04

SYSTEMS AND METHODS FOR DIFFRACTIVE COHERENT LASER COMBINING

#19
20210255472
2021-08-19

Luminaires and optical elements for use therein

#20
20210173222
2021-06-10

Method and system for aperture expansion in light field displays

#21
20210142170
2021-05-13

Devices and methods employing optical-based machine learning using diffractive deep neural networks

#22
20210109287
2021-04-15

Color separation in planar waveguides using an optical filter between two diffractive optical elements (DOE)

#23
20210109278
2021-04-15

Waveguides having integrated spacers, waveguides having edge absorbers, and methods for making the same

#24
20200412077
2020-12-31

Femtosecond fiber oscillator

#25
20200379270
2020-12-03

Polychromator systems and methods

#26
20200372236
2020-11-26

Waveguide device incorporating beam direction selective light absorber

#27
20200355494
2020-11-12

STRUCTURED LIGHT PROJECTION

#28
20200278543
2020-09-03

Double-sided imaging light guide

#29
20200225501
2020-07-16

Generating structured light

#30
20200174243
2020-06-04

Four-dimensional multi-plane broadband imaging system based on non-reentry quadratically distorted (NRQD) grating and grism

#31
20200089078
2020-03-19

COMPACT LIQUID CRYSTAL BEAM STEERING DEVICES INCLUDING MULTIPLE POLARIZATION GRATINGS

#32
20200088945
2020-03-19

Color separation in planar waveguides using wavelength filters

#33
20200081317
2020-03-12

Contact image sensor using switchable Bragg gratings

#34
20200012839
2020-01-09

Method and apparatus for contact image sensing

#35
20200012093
2020-01-09

Waveguide structure

#36
20190310541
2019-10-10

Diffractive optical assembly, laser projection unit, and depth camera

#37
20190310421
2019-10-10

Eyepiece providing color separation in planar waveguides using dichroic filters

#38
20190187538
2019-06-20

Contact image sensor using switchable Bragg gratings

#39
20190171030
2019-06-06

Low-temperature hermetic sealing for diffractive optical element stacks

#40
20190162691
2019-05-30

Capacitive DOE integrity monitor

#41
20190101766
2019-04-04

Light-Based Mechanism For Optical Indicator Guides

#42
20190056217
2019-02-21

Three dimensional image measurement system

#43
20190049632
2019-02-14

Planar metalens and cover glass including the same

#44
20190042827
2019-02-07

Method and apparatus for contact image sensing

#45
20190041658
2019-02-07

Engineered surface to reduce visibility of pixel separation in displays

#46
20190037113
2019-01-31

Camera housing and imaging method

#47
20190011248
2019-01-10

Displacement detecting device with controlled heat generation

#48
20180299595
2018-10-18

Controllable planar optical focusing system

#49
20180296269
2018-10-18

Device and method for skin treatment

#50
20180246414
2018-08-30

Suppression filter, radiation collector and radiation source for a lithographic apparatus; method of determining a separation distance between at least two reflective surface levels of a suppression filter

#51
20180180817
2018-06-28

Color separation in planar waveguides using dichroic filters

#52
20180120669
2018-05-03

Contact image sensor using switchable bragg gratings

#53
20170357841
2017-12-14

Method and apparatus for contact image sensing

#54
20170315423
2017-11-02

Compact liquid crystal beam steering devices including multiple polarization gratings

#55
20170307902
2017-10-26

3D printing with variable voxel sizes based on optical filter

#56
20170307165
2017-10-26

Lighting apparatus for vehicles

#57
20170242259
2017-08-24

Spectrum-generation system based on multiple-diffraction optical phasometry

#58
20170199144
2017-07-13

Capacitive DOE integrity monitor

#59
20170168301
2017-06-15

Display with multilayer diffractive optical elements

#60
20170116757
2017-04-27

Optical pattern projection

#61
20170082786
2017-03-23

Polarization independent wideband reflectors and methods for their manufacture

#62
20170045652
2017-02-16

Controllable planar optical focusing system

#63
20160327852
2016-11-10

Displaying apparatus including optical image projection system and two plate-shaped optical propagation systems

#64
20160284904
2016-09-29

Apparatus for and method of forming plural groups of laser beams using two rotating diffractive optical elements

#65
20160283773
2016-09-29

Method and apparatus for contact image sensing

#66
20160266393
2016-09-15

Field mapper

#67
20160252742
2016-09-01

Image display device

#68
20160238855
2016-08-18

Low-temperature hermetic sealing for diffractive optical element stacks

#69
20160231575
2016-08-11

SPATIOTEMPORAL FOCUSING APPARATUS AND METHOD

#70
20160161752
2016-06-09

Device for wavelength combining of laser beams

#71
20160139407
2016-05-19

Light flux diameter-expanding element and display apparatus

#72
20160100155
2016-04-07

Optical pattern projection

#73
20160070128
2016-03-10

Display device capable of displaying a continuous image

#74
20150258835
2015-09-17

Security element and security document

#75
20150194230
2015-07-09

EUV collector

#76
20130120841
2013-05-16

Optical pattern projection

#77
20130050829
2013-02-28

BEAMSPLITTER AND METHOD OF BEAMSPLITTING

#78
20120307352
2012-12-06

Energy-efficient smart window system

#79
20120300301
2012-11-29

DIFFRACTION-GRATING LENS, AND IMAGING OPTICAL SYSTEM AND IMAGING DEVICE USING SAID DIFFRACTION-GRATING LENS

#80
20120198935
2012-08-09

Twin sub-wavelength grating optical signal processor

#81
20120182618
2012-07-19

DIFFRACTION GRATING LENS AND IMAGING DEVICE USING SAME

#82
20120170121
2012-07-05

Diffraction grating lens and imaging device in which the same is used

#83
20120099203
2012-04-26

Optical device and method for correcting chromatic aberrations

#84
20120094066
2012-04-19

INTEGRATED MICRO-OPTICAL SYSTEMS AND CAMERAS INCLUDING THE SAME

#85
20120013880
2012-01-19

Optical device and exposure apparatus including the same

#86
20120008207
2012-01-12

Light polarizer

#87
20110075259
2011-03-31

Optical designs for zero order reduction

#88
20110069389
2011-03-24

OPTICAL DESIGNS FOR ZERO ORDER REDUCTION

#89
20100328743
2010-12-30

OPTICAL SYSTEM

#90
20100296162
2010-11-25

Membrane grating for beam steering device and method of fabricating same

#91
20100284082
2010-11-11

Optical pattern projection

#92
20100277803
2010-11-04

Display Device Having Two Operating Modes

#93
20100246006
2010-09-30

Diffractive optical system and optical device

#94
20100238685
2010-09-23

Light diffraction member and display and backlight module having the same

#95
20100214456
2010-08-26

CAMERA MODULE AND METHOD OF MANUFACTURING CAMERA MODULE

#96
20100182697
2010-07-22

Diffractive optical system and eyepiece optical system

#97
20100157777
2010-06-24

Optical head and optical disc device

#98
20100140464
2010-06-10

Optical system for mapping signal light onto a detector

#99
20100134869
2010-06-03

Optical device with a pair of diffractive optical elements

#100
20100007957
2010-01-14

Photographing lens and camera

#101
20090201585
2009-08-13

Optical system and optical apparatus using the same

#102
20090185274
2009-07-23

OPTICAL DESIGNS FOR ZERO ORDER REDUCTION

#103
20090180185
2009-07-16

Minute structure and its manufacturing method

#104
20090168153
2009-07-02

Infrared zoom lens and infrared camera

#105
20090153969
2009-06-18

Image display apparatus

#106
20090147362
2009-06-11

Image display apparatus

#107
20090011368
2009-01-08

Exposure Method and Apparatus, and Electronic Device Manufacturing Method

#108
20080252888
2008-10-16

APPARATUS FOR POLARIZATION-SPECIFIC EXAMINATION, OPTICAL IMAGING SYSTEM, AND CALIBRATION METHOD

#109
20080247043
2008-10-09

Membrane grating for beam steering device and method of fabricating same

#110
20080170295
2008-07-17

Optical material and optical element, diffraction optical element, and stacked type diffraction optical element molded thereof

#111
20080128844
2008-06-05

Integrated micro-optical systems and cameras including the same

#112
20080106806
2008-05-08

Optical Device with Fresnel Structure

#113
20080088923
2008-04-17

Light polarizer

#114
20080055727
2008-03-06

Diffractive optical element and optical system having the same

#115
20080043335
2008-02-21

Diffractive optical element and optical system including the same

#116
20070297057
2007-12-27

Diffractive optical element and optical system including the same

#117
20070153387
2007-07-05

Compact lens for digital image acquisition and image acquisition device

#118
20070024978
2007-02-01

Conformal beam steering devices having a minimal volume and window area utilizing risley prisms and diffraction gratings

#119
20060256453
2006-11-16

Imaging optical system and image capturing apparatus including imaging optical system

#120
20060193052
2006-08-31

Blazed diffractive optical element and projection objective for a microlithographic projection exposure apparatus

#121
20060176559
2006-08-10

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

#122
20060171031
2006-08-03

Diffractive optical element and method of fabricating diffractive optical element

#123
20060152808
2006-07-13

Light diffraction method and diffraction device, diffraction grating used for them, and position encoder device

#124
20060126179
2006-06-15

Method and system for beam expansion in a display device

#125
20060087737
2006-04-27

Optical system using diffraction optical element

#126
20060049330
2006-03-09

Optical system having element for correcting aberration of mirror and optical pickup apparatus employing the same

#127
20060016958
2006-01-26

Objective optical element and optical pickup apparatus

#128
20050249502
2005-11-10

Optical device with a steerable light path

#129
20050243423
2005-11-03

Diffraction optical element

#130
20050220400
2005-10-06

Tunable dispersion compensator

#131
20050219702
2005-10-06

Diffractive optical element and optical system including the same

#132
20050146789
2005-07-07

Apparatus for polarization-specific examination, optical imaging system, and calibration method

#133
20050128185
2005-06-16

Virtual input element image projection apparatus

#134
20050117221
2005-06-02

Optical system and method of designing optical system

#135
20050111076
2005-05-26

Compact wavelength selective switching and/or routing system

#136
20050018294
2005-01-27

Apparatus for shaping a light beam

#137
15173770
2017-11-28

Pancharatnam-berry optical element/diffractive waveplate angular momentum sorter

#138
15139694
2017-08-01

Tunable optical filter with adjustable bandwidth