ClassID:

174868

G02B27/14 - page 2 - CPC Classification

Classification description:

Optical systems or apparatus not provided for by any of the groups -; Beam splitting or combining systems operating by reflection only

Recent Application in this class:
#301
20190121150
2019-04-25

Methods for system layout optimization for retro-reflective based display systems

#302
20190120942
2019-04-25

LiDAR with large dynamic range

#303
20190117065
2019-04-25

Miniature imaging system for ophthalmic laser beam delivery system

#304
20190113748
2019-04-18

Combiner and head-up display device using same

#305
20190107727
2019-04-11

Nano-structured non-polarizing beamsplitter

#306
20190101750
2019-04-04

HEAD-UP DISPLAY FOR DISPLAYING VIRTUAL IMAGES

#307
20190067894
2019-02-28

Spatially-distributed gain element self-phase-locked, laser apparatus and method

#308
20190056584
2019-02-21

Loupe camera

#309
20190052056
2019-02-14

Optical module and method for controlling optical module

#310
20190049640
2019-02-14

Transmissive aerial image display

#311
20190034676
2019-01-31

System and method for expansion of field of view in a vision system

#312
20190025590
2019-01-24

See-through computer display systems

#313
20190017872
2019-01-17

Systems and methods for an absorbance detector with optical reference

#314
20190011248
2019-01-10

Displacement detecting device with controlled heat generation

#315
20190004218
2019-01-03

Reducing optical damage on an optical element

#316
20180376124
2018-12-27

Rear view vision system for a vehicle

#317
20180348512
2018-12-06

Transmission type screen and head-up display device using same

#318
20180341103
2018-11-29

Ladar transmitter with ellipsoidal reimager

#319
20180332259
2018-11-15

Method for reducing speckle effect

#320
20180329216
2018-11-15

High brightness, monolithic, multispectral semiconductor laser

#321
20180321496
2018-11-08

Near-to-eye display with steerable phased arrays

#322
20180321035
2018-11-08

Laser level

#323
20180307028
2018-10-25

Beam splitter device having at least two beamsplitting surfaces with different reflection-to-transmission ratios

#324
20180307013
2018-10-25

Illumination optical system for laser line generator

#325
20180299686
2018-10-18

System for imaging in the air

#326
20180284582
2018-10-04

ILLUMINATION SYSTEM AND PROJECTION APPARATUS

#327
20180284470
2018-10-04

Display device for aerial image having retro-reflective part

#328
20180284464
2018-10-04

Multifocal system using pixel level polarization controllers and folded optics

#329
20180284271
2018-10-04

Lidar system and method for ascertaining a system state of a lidar system

#330
20180275419
2018-09-27

Devices and methods for speckle reduction in scanning projectors

#331
20180268113
2018-09-20

Processing Data of a User Performing an athletic Activity to Estimate Energy Expenditure

#332
20180267317
2018-09-20

Substrate-guide optical device

#333
20180266891
2018-09-20

Apparatus and method for measuring waveform of light wave based on ionization yield modulation

#334
20180259784
2018-09-13

Retroreflector display system for generating floating image effects

#335
20180252929
2018-09-06

Wavelength beam combining laser systems with high beam quality factor

#336
20180251070
2018-09-06

Toggle mechanism for rearview assembly

#337
20180246566
2018-08-30

Eye tracking

#338
20180233110
2018-08-16

Head mounted display device

#339
20180231882
2018-08-16

Illuminating unit and projection display apparatus

#340
20180224658
2018-08-09

Measurement method and system

#341
20180220887
2018-08-09

Eye imaging apparatus

#342
20180217388
2018-08-02

Display device employing a virtual plane overlaying mechanical indicia

#343
20180196267
2018-07-12

Pseudo phase conjugate image transfer device

#344
20180196242
2018-07-12

Illumination optical system for laser line generator

#345
20180180977
2018-06-28

PROJECTOR

#346
20180177629
2018-06-28

Ophthalmologic microscope system

#347
20180172970
2018-06-21

MICROSCOPE OR ENDOSCOPE ASSEMBLY AND METHOD FOR REDUCING SPECULAR REFLECTIONS

#348
20180164598
2018-06-14

System for imaging in the air

#349
20180164515
2018-06-14

Multi-channel optical transmitter and methods of making and using the same

#350
20180162277
2018-06-14

Apparatuses and methods for making an object appear transparent

#351
20180154481
2018-06-07

System for laser material processing and method for adjusting the size and position of a laser focus

#352
20180151360
2018-05-31

Laser annealing apparatus, and fabrication methods of polycrystalline silicon thin film and thin film transistor

#353
20180149777
2018-05-31

Surface display units with opaque screen

#354
20180143445
2018-05-24

Offset laser array with beam combining optical element

#355
20180143430
2018-05-24

PRE-CAPTURE DE-IDENTIFICATION (PCDI) IMAGING SYSTEM AND PCDI OPTICS ASSEMBLY

#356
20180143368
2018-05-24

Optical device for producing high brightness light

#357
20180129042
2018-05-10

Head-up display

#358
20180121710
2018-05-03

System and method for object authenticity detection

#359
20180120575
2018-05-03

Systems and methods for illuminating and imaging objects

#360
20180120564
2018-05-03

Short range optical amplification module, spectacles, helmet and VR system

#361
20180107103
2018-04-19

Systems, devices, and methods for focusing laser projectors

#362
20180107102
2018-04-19

Systems, devices, and methods for focusing laser projectors

#363
20180100635
2018-04-12

APPARATUS FOR COMBINING LIGHT BEAMS

#364
20180095287
2018-04-05

Optical device

#365
20180081146
2018-03-22

Experimental system for laser beam measurement and steering control

#366
20180080754
2018-03-22

INTERFEROMETER FOR MEASURING QUALITIES OF LARGE SIZE OBJECTS

#367
20180060532
2018-03-01

Processing Data of a User Performing an athletic Activity to Estimate Energy Expenditure

#368
20180059414
2018-03-01

Augmented reality visualization device

#369
20180039061
2018-02-08

APPARATUS AND METHODS TO GENERATE IMAGES AND DISPLAY DATA USING OPTICAL DEVICE

#370
20180024373
2018-01-25

Retroreflector display system for generating floating image effects

#371
20180024364
2018-01-25

Image display device and program

#372
20180017830
2018-01-18

Second surface transflector for electro-optic device

#373
20180017800
2018-01-18

VIRTUAL IMAGE DISPLAY APPARATUS

#374
20180017790
2018-01-18

Head-up display and moving body equipped with head-up display

#375
20180017787
2018-01-18

Aberration correction

#376
20170373783
2017-12-28

Apparatus and method for detecting optical signal

#377
20170363872
2017-12-21

See-through computer display systems

#378
20170343829
2017-11-30

Head mounted display

#379
20170326798
2017-11-16

Laser irradiation device and method

#380
20170315360
2017-11-02

Display apparatus

#381
20170315352
2017-11-02

Dual head-up display apparatus

#382
20170299956
2017-10-19

Systems, devices, and methods for focusing laser projectors

#383
20170299857
2017-10-19

Beam dump apparatus, laser apparatus equipped with the beam dump apparatus, and extreme ultraviolet light generating apparatus

#384
20170285354
2017-10-05

Laser light source device and video display device

#385
20170285348
2017-10-05

Light homogenization

#386
20170262020
2017-09-14

Head Mount Display with Near-Eye Projection for Virtual Reality System

#387
20170261931
2017-09-14

Illumination apparatus and holographic display apparatus including the same

#388
20170250773
2017-08-31

LIGHT SIGNAL MULTIPLEXER AND LIGHT SIGNAL DEMULTIPLEXER

#389
20170242280
2017-08-24

Systems and methods for amplification of back-scattered signal by laser source cavity

#390
20170242255
2017-08-24

See-through computer display systems

#391
20170242251
2017-08-24

See-through computer display systems

#392
20170242103
2017-08-24

Ladar transmitter with optical field splitter/inverter for improved gaze on scan area portions

#393
20170227781
2017-08-10

Apparatuses and methods for making an object appear transparent

#394
20170219810
2017-08-03

Microscope and method for optically examining and/or manipulating a microscopic sample

#395
20170176845
2017-06-22

Light source device with light splitting mirror and reflection mirror for reducing influence on uniformity of intensity distribution of beam flux, and projection device

#396
20170176655
2017-06-22

Half mirror, method for manufacturing the same and lighting unit using the same

#397
20170172691
2017-06-22

Beam guide for ophthalmic surgical illumination

#398
20170168381
2017-06-15

Light source device and projector

#399
20170168124
2017-06-15

MEDICAL IMAGE DIAGNOSTIC APPARATUS

#400
20170160553
2017-06-08

High brightness, monolithic, multispectral semiconductor laser

#401
20170160549
2017-06-08

Augmented reality glasses for medical applications and corresponding augmented reality system

#402
20170150119
2017-05-25

Spatial information capturing device

#403
20170131557
2017-05-11

Multi-channel optical module device

#404
20170123213
2017-05-04

Suppression of stray light in head worn computing

#405
20170123177
2017-05-04

Boresight alignment module

#406
20170116727
2017-04-27

Inspection apparatus, semiconductor device manufacturing system including the same, and method of manufacturing a semiconductor device using the same

#407
20170115554
2017-04-27

Laser projection illumination system

#408
20170097562
2017-04-06

Light source module and projection device

#409
20170090274
2017-03-30

Light source device and image projection apparatus

#410
20170080867
2017-03-23

Toggle mechanism for rearview assembly

#411
20170068066
2017-03-09

Laser autocollimator using optical parasitic interference

#412
20170067732
2017-03-09

Method of improving lateral resolution for height sensor using differential detection technology for semiconductor inspection and metrology

#413
20170039998
2017-02-09

Display apparatus and method

#414
20170038587
2017-02-09

Display device

#415
20170003649
2017-01-05

Optical fingerprint imaging using holography

#416
20170003510
2017-01-05

Planar high angle line generator

#417
20160380410
2016-12-29

Laser beam combination system

#418
20160370584
2016-12-22

Measurement method and system

#419
20160327786
2016-11-10

Vehicle heads-up display device

#420
20160306088
2016-10-20

Uniform chemical vapor deposition coating on a 3-dimensional array of uniformly shaped articles

#421
20160299347
2016-10-13

Beam combining device having a diffractive grating surface

#422
20160292921
2016-10-06

SYSTEM, APPARATUS, AND METHOD FOR DISPLAYING AN IMAGE USING LIGHT OF VARYING INTENSITIES

#423
20160282631
2016-09-29

Electronic device

#424
20160282573
2016-09-29

Optical device and optic transceiver device

#425
20160274369
2016-09-22

Laser beam combining device

#426
20160274346
2016-09-22

Optical System for Fast Three-Dimensional Imaging

#427
20160273960
2016-09-22

Optical computing devices with multiple bandpass filters

#428
20160255253
2016-09-01

Aero-wave instrument for the measurement of the optical wave-front disturbances in the airflow around airborne systems

#429
20160252603
2016-09-01

Aero-wave instrument for the measurement of the optical wave-front disturbances in the airflow around airborne systems

#430
20160242643
2016-08-25

Transparent Camera for Imaging the Eye

#431
20160223890
2016-08-04

Light source apparatus and projection display apparatus

#432
20160223766
2016-08-04

Optical device for beam combining and/or routing and method

#433
20160211652
2016-07-21

LIGHT-SOURCE DEVICE,IN PARTICULAR FOR USE IN A MICROMIRROR DEVICE

#434
20160188936
2016-06-30

System and method for expansion of field of view in a vision system

#435
20160170283
2016-06-16

Electro-optical device and wearable electronic device

#436
20160170214
2016-06-16

Substrate-guide optical device

#437
20160170213
2016-06-16

Substrate-guide optical device

#438
20160156886
2016-06-02

Method for reducing speckle effect

#439
20160139417
2016-05-19

Multiple beam combiner for laser processing apparatus

#440
20160126690
2016-05-05

Dual beamsplitting element based excimer laser pulse stretching device

#441
20160116743
2016-04-28

Substrate-guide optical device

#442
20160109704
2016-04-21

Image display device and program

#443
20160033750
2016-02-04

System and method for expansion of field of view in a vision system

#444
20160018663
2016-01-21

Image display apparatus using transflective electro-optic device

#445
20160011425
2016-01-14

Method and system for reducing motion blur when experiencing virtual or augmented reality environments

#446
20160004149
2016-01-07

Illumination system

#447
20160003990
2016-01-07

Display

#448
20150362735
2015-12-17

Light beam expanding device, image display device, and optical device

#449
20150349484
2015-12-03

Laser device and method

#450
20150331246
2015-11-19

Apparatus, system, and method for displaying an image using a plate

#451
20150303656
2015-10-22

Semiconductor laser apparatus

#452
20150234153
2015-08-20

REFLECTIVE VARIFOCAL LENS AND IMAGING SYSTEM INCLUDING THE SAME

#453
20150226975
2015-08-13

Light assembly

#454
20150219894
2015-08-06

Head-up display

#455
20150205347
2015-07-23

Eye imaging in head worn computing

#456
20150205141
2015-07-23

Optical device having a light transmitting substrate with external light coupling means

#457
20150205140
2015-07-23

Optical device having a light transmitting substrate with external light coupling means

#458
20150205124
2015-07-23

Eye imaging in head worn computing

#459
20150205112
2015-07-23

Suppression of stray light in head worn computing

#460
20150205105
2015-07-23

Eye imaging in head worn computing

#461
20150205104
2015-07-23

Eye imaging in head worn computing

#462
20150205103
2015-07-23

Eye imaging in head worn computing

#463
20150205102
2015-07-23

Eye imaging in head worn computing

#464
20150205101
2015-07-23

Eye imaging in head worn computing

#465
20150205100
2015-07-23

Eye imaging in head worn computing

#466
20150201831
2015-07-23

Portable perimeter for static multi-point synchronous thresholding screening and single-point thresholding detection

#467
20150198805
2015-07-16

Optical device having a light transmitting substrate with external light coupling means

#468
20150195498
2015-07-09

Optical projecting apparatus having two digital micro-mirror devices

#469
20150177526
2015-06-25

Optical multiplexer and transmitter optical subassembly

#470
20150177523
2015-06-25

REFLECTOR UNIT, APPARATUS AND METHOD OF LIGHT BEAM SHAPING

#471
20150177516
2015-06-25

Optical see-through glass type display device and corresponding optical element

#472
20150153569
2015-06-04

Optical device and virtual image display apparatus

#473
20150148786
2015-05-28

Reflex coaxial illuminator

#474
20150146285
2015-05-28

REFLECTIVE STRUCTURE FOR OPTICAL TOUCH SENSING

#475
20150131157
2015-05-14

Laser frequency adjustment method and laser frequency adjustment system

#476
20150131137
2015-05-14

Chromatic converter for altimetry

#477
20150124329
2015-05-07

Multiple beam combiner for laser processing apparatus

#478
20150103317
2015-04-16

Portable eye viewing device enabled for enhanced field of view

#479
20150098132
2015-04-09

Split unit

#480
20150097940
2015-04-09

ORTHOGONAL LIGHT BEAM SPLITTING FOR MICROSCOPES

#481
20150086155
2015-03-26

Dynamic communication splitter

#482
20150059226
2015-03-05

System for automatically aligning a rifle scope to a rifle

#483
20150049328
2015-02-19

BIOCHEMICAL ANALYZING SYSTEM AND LIGHT MODULE THEREOF

#484
20150042953
2015-02-12

Measurement method and system

#485
20150036222
2015-02-05

Image display device and program

#486
20140362881
2014-12-11

Laser beam combining device

#487
20140354991
2014-12-04

Normal-incidence broadband spectroscopic polarimeter containing reference beam and optical measurement system

#488
20140340758
2014-11-20

System and method for expansion of field of view in a vision system

#489
20140333934
2014-11-13

Scan lens, interferometric measuring device using same

#490
20140320826
2014-10-30

Optical unit and projective display device

#491
20140307440
2014-10-16

Radiating element for focussed energy

#492
20140307324
2014-10-16

Cover of head up display and housing including the cover

#493
20140293435
2014-10-02

Projector

#494
20140270644
2014-09-18

Ring combiner

#495
20140268330
2014-09-18

Imaging with shaped highlight beam

#496
20140268263
2014-09-18

Multi-channel simultaneous photostimulation

#497
20140268174
2014-09-18

Integrated apertured micromirror and applications thereof

#498
20140240677
2014-08-28

Light source, light combining device, and projection device with the light source

#499
20140239167
2014-08-28

Submount for optoelectronic, optical, or photonic components

#500
20140219608
2014-08-07

OPTICAL POWER SPLITTERS

#501
20140204195
2014-07-24

MICROSCOPE, OBJECTIVE OPTICAL SYSTEM, AND IMAGE ACQUISITION APPARATUS

#502
20140192365
2014-07-10

Spatial splitting-based optical MEMS interferometers

#503
20140177218
2014-06-26

Luminaire emitting light of different colours

#504
20140177062
2014-06-26

Video wall and mullion elimination lens thereof

#505
20140168785
2014-06-19

System and method for combining light beams

#506
20140153256
2014-06-05

Light duct tee extractor

#507
20140126036
2014-05-08

Multi-zone mirrors

#508
20140104580
2014-04-17

PROJECTION DEVICE

#509
20140092362
2014-04-03

Illumination system for opthalmic microscope, and its operation method

#510
20140085719
2014-03-27

Display panel and display apparatus having the same

#511
20140049755
2014-02-20

Illumination light generation apparatus

#512
20140036358
2014-02-06

Scalable wavelength beam combining system and method

#513
20140016297
2014-01-16

Light module for a projection apparatus and method for generating the blue component in a light module for a projection apparatus

#514
20140016205
2014-01-16

Light duct tee splitter

#515
20140002812
2014-01-02

System for automatically aligning a rifle scope to a rifle

#516
20130329298
2013-12-12

Orthogonal light beam splitting for microscopes

#517
20130314759
2013-11-28

Compact see-through display system

#518
20130286357
2013-10-31

Optical system and projection display apparatus using the same

#519
20130277341
2013-10-24

Method and apparatus for laser cutting

#520
20130276960
2013-10-24

Method of making a substrate-guided optical device utilizing polarization beam splitters

#521
20130271845
2013-10-17

Stereoscopic beam splitter

#522
20130250428
2013-09-26

MAGNIFYING IMAGING OPTICAL UNIT AND METROLOGY SYSTEM COMPRISING SUCH AN IMAGING OPTICAL UNIT

#523
20130241908
2013-09-19

Display apparatus and method

#524
20130229717
2013-09-05

Substrate-guide optical device

#525
20130201563
2013-08-08

System and method for expansion of field of view in a vision system

#526
20130200157
2013-08-08

System and method for expansion of field of view in a vision system

#527
20130163091
2013-06-27

Multiple beam combiner for laser processing apparatus

#528
20130141794
2013-06-06

Three dimensional sub-wavelength structure with surface plasmon energy matching properties

#529
20130128611
2013-05-23

Light beam expanding device, image display device, and optical device

#530
20130127997
2013-05-23

3D image pickup optical apparatus and 3D image pickup apparatus

#531
20130120851
2013-05-16

Color separating optical system and image pickup apparatus including the same

#532
20130120849
2013-05-16

Optical phase space combiner

#533
20130077177
2013-03-28

Optical splitting device, optical multiplexing device and method, and optical add-drop multiplexer

#534
20130070334
2013-03-21

Auto focusing devices for optical microscopes

#535
20130051409
2013-02-28

Beam combiner and distributor system and method therefore

#536
20130048052
2013-02-28

Light concentration and energy conversion system

#537
20130021658
2013-01-24

Compact see-through display system

#538
20130016410
2013-01-17

OPTICAL DEVICE FOR AN ILLUMINATION DEVICE OF A 3D DISPLAY

#539
20120314411
2012-12-13

Light source device and lighting device

#540
20120268592
2012-10-25

Processing data of a user performing an athletic activity to estimate energy expenditure

#541
20120261559
2012-10-18

Monolithic optical coupling module based on total internal reflection surfaces

#542
20120242959
2012-09-27

Color light mixing method, color light mixing device and small-sized projecting system having such color light mixing device

#543
20120206817
2012-08-16

Virtual image display system

#544
20120193520
2012-08-02

Beam splitter module having a secondary beam splitter for providing orthogonal light beams and parallel light beams

#545
20120171622
2012-07-05

Filter, exposure apparatus, and method of manufacturing device

#546
20120170945
2012-07-05

Dynamic communication splitter

#547
20120154759
2012-06-21

Color-combining illumination device

#548
20120147471
2012-06-14

V-shaped resonators for addition of broad-area laser diode arrays

#549
20120147333
2012-06-14

Color combining illumination device

#550
20120087000
2012-04-12

PROGRAMMABLE LIGHT SOURCE

#551
20120026570
2012-02-02

Multi-zone mirrors

#552
20110216792
2011-09-08

Scalable wavelength beam combining system and method

#553
20110216521
2011-09-08

Light diffusion and condensing fixture

#554
20110216420
2011-09-08

Systems, methods, and apparatus for a light reflector

#555
20110176769
2011-07-21

Spherical optical splitter/combiner

#556
20110122372
2011-05-26

Laser beam source device, projector, and monitoring device having dual light emission elements with non-uniform light emission portions

#557
20110075105
2011-03-31

Multiplexing light pipe having enhanced brightness

#558
20110075100
2011-03-31

Optical projection type image display device

#559
20110061726
2011-03-17

HIGH EFFICIENCY SOLAR CELL

#560
20110048520
2011-03-03

HIGH EFFICIENCY SOLAR CELL WITH A SILICON SCAVENGER CELL

#561
20110047854
2011-03-03

Telescopic sight

#562
20100316071
2010-12-16

Laser beam combining and power scaling device

#563
20100309479
2010-12-09

Interference measuring device

#564
20100296165
2010-11-25

MEMS-based pellicle beamsplitter

#565
20100289874
2010-11-18

SQUARE TUBE MIRROR-BASED IMAGING SYSTEM

#566
20100265382
2010-10-21

Ultra-wide angle MEMS scanner architecture

#567
20100264299
2010-10-21

Wavelength splitting element, method for manufacturing the same and optical module

#568
20100238549
2010-09-23

Illumination systems

#569
20100231922
2010-09-16

Three-dimensional interferometric microscopy

#570
20100208372
2010-08-19

Compact objective lens assembly for simultaneously imaging multiple spectral bands

#571
20100177375
2010-07-15

Beam combiner and a light source with such a beam combiner

#572
20100172014
2010-07-08

Programmable light source

#573
20100097602
2010-04-22

Dichroic beamsplitter for high energy laser diagnostics

#574
20100067110
2010-03-18

Optical device having a light transmitting substrate with external light coupling means

#575
20090320903
2009-12-31

HIGH EFFICIENCY SOLAR CELL WITH A SILICON SCAVENGER CELL

#576
20090314332
2009-12-24

HIGH EFFICIENCY SOLAR CELL

#577
20090296071
2009-12-03

LIGHT-DIVIDING ELEMENT AND DISTANCE-MEASURING APPARATUS

#578
20090267088
2009-10-29

Systems, devices and methods of broadband light sources with tunable spectrum

#579
20090213470
2009-08-27

Projection optical system and image display device

#580
20090141242
2009-06-04

Stereo projection apparatus using polarized solid state light sources

#581
20090116215
2009-05-07

Optical manifold

#582
20090115967
2009-05-07

Optical scanning system

#583
20090073382
2009-03-19

Devices and methods for defined orientation of an eye

#584
20090046263
2009-02-19

Using phase difference of interference lithography for resolution enhancement

#585
20090016065
2009-01-15

Reflector for a lighting device and illumination system of a projection apparatus

#586
20090009650
2009-01-08

Portable electronic device and camera module therefor

#587
20080292259
2008-11-27

Multi-color curved multi-light generating apparatus

#588
20080247047
2008-10-09

Homogenizing optical beam combiner

#589
20080198893
2008-08-21

Laser assembly

#590
20080151379
2008-06-26

Substrate-guide optical device utilizing polarization beam splitters

#591
20080122995
2008-05-29

Filter For Optical Recording Medium, Optical Recording Medium, Method For Producing The Optical Recording Medium, Optical Recording Method And Optical Reproducing Method

#592
20080100917
2008-05-01

Broadband imaging system and method

#593
20080043333
2008-02-21

Lens device

#594
20080031106
2008-02-07

Optical Pickup Apparatus

#595
20070291813
2007-12-20

Coupling devices and methods for stacked laser emitter arrays

#596
20070285928
2007-12-13

Light source unit having reflective wall surfaces and light-emitting elements, and projector utilizing the light source unit

#597
20070274714
2007-11-29

Optically multiplexed imaging system and methods of operation

#598
20070146892
2007-06-28

Optical pickup and optical information reproducing apparatus using same

#599
20070145248
2007-06-28

Apparatus and method for providing high intensity non-coherent light and for speckle reduction

#600
20070121086
2007-05-31

Illumination apparatus and image projection apparatus