FI114946B - Diffraktivt gitterelement för balansering av diffraktionsverkningsgrad - Google Patents

Diffraktivt gitterelement för balansering av diffraktionsverkningsgrad Download PDF

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Publication number
FI114946B
FI114946B FI20022199A FI20022199A FI114946B FI 114946 B FI114946 B FI 114946B FI 20022199 A FI20022199 A FI 20022199A FI 20022199 A FI20022199 A FI 20022199A FI 114946 B FI114946 B FI 114946B
Authority
FI
Finland
Prior art keywords
grating element
lattice
split
grating
diffractive
Prior art date
Application number
FI20022199A
Other languages
English (en)
Finnish (fi)
Other versions
FI20022199A (sv
FI20022199A0 (sv
Inventor
Tapani Levola
Original Assignee
Nokia Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Corp filed Critical Nokia Corp
Publication of FI20022199A0 publication Critical patent/FI20022199A0/sv
Priority to FI20022199A priority Critical patent/FI114946B/sv
Priority to US10/538,972 priority patent/US7483604B2/en
Priority to KR1020057011005A priority patent/KR100669162B1/ko
Priority to AU2003285384A priority patent/AU2003285384A1/en
Priority to JP2004560539A priority patent/JP4510639B2/ja
Priority to PCT/FI2003/000948 priority patent/WO2004055556A1/en
Priority to EP03778372.7A priority patent/EP1573369B1/en
Priority to CN2003801063489A priority patent/CN1726412B/zh
Priority to PT37783727T priority patent/PT1573369E/pt
Publication of FI20022199A publication Critical patent/FI20022199A/sv
Application granted granted Critical
Publication of FI114946B publication Critical patent/FI114946B/sv

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/0944—Diffractive optical elements, e.g. gratings, holograms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1842—Gratings for image generation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B2006/12083—Constructional arrangements
    • G02B2006/12107—Grating

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Claims (11)

1. Diffraktivt gitterelement (SG), som är anordnat eller infällt i ett ljus transmitterande, företrädesvis plant vägledarsubstrat (S) och är anord- 5 nat att stä i växelverkan med en infallande ljusväg (W) för att koppia energin frän sagda infallande ljusväg (W) till sagda substrat (S) för att bilda ätminstone en bruten ljusväg (R_i, R+1) som fortplantar sig inom sagda substrat (S) och som motsvarar ätminstone en vald diffraktions-ordning, kännetecknat av, att gitterelementet (SG) är delat i ätmin-10 stone tvä olika gitteromräden (BGieft, BGright; MBG|eft, MBGrjght), vilka var har olika diffraktionsegenskaper och vilka är anordnade pä motsatta sidor av en övergängspunkt (TP) för att bilda ett kluvet gitterelement, i vilket de av sagda ätminstone tvä olika gitteromräden (BGieft, BGnghtl MBGieft, MBGnght) bildade brytningarna är anordnade att sinsemellan 15 kompensera variationen i infallsvinkeln (Θ) av den infallande ljusvägen (W) relativt totaldiffraktionsverkningsgraden av ätminstone en bruten ljusväg (R-ι, R+i) som fortplantar sig i sagda substrat (S).
2. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, 20 att i sagda kluvna gitterelement (SG) gitterprofilen av ätminstone ett gitteromräde (BG|eft, BGright; MBG|eft, MBGright) har en oregelbunden periodisk profil, företrädesvis en periodisk b/azed-profil. v
: 3. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, 25 att sagda kluvna gitterelement (SG) är anordnat symmetriskt kluvet, dvs elementet omfattar tvä gitteromräden (BGieft, BGright), vars gitter-periodiska profiler är anordnade väsentligen som spegelbilder till var-. * · ·. andra relativt övergängspunkten (TP).
4. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, att sagda kluvna gitterelement (SG) omfattar ätminstone tvä gitter-·;·’ omräden (BGieft, BGright), vars gitterperiodiska profiler är anordnade att ; · “ ha väsentligen olika djupar. /.! 35 .
5. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, * : att i sagda kluvna gitterelement (SG) diffraktionsverkningsgraden av 114946 anordnad att variera pä olika lokala avständ, mätta frän övergängs-punkten (TP).
6. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, 5 att övergängspunkten (TP) är anordnad att ligga i ett omräde där den infallande ljusvägen (W) först träffar det kluvna gitterelementet (SG).
7. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, att den första träffen av den infallande ljusvägen (W) med det kluvna 10 gitterelementet (SG) är anordnad att ske väsentligen inom ett gitter-omräde (MBGright).
8. Diffraktivt gitterelement (SG) enligt patentkrav 7, kännetecknat av, att ätminstone ett av gitteromräden (MBG|eft) är anordnat att rikta igen 15 eller ätercirkulera den inom substratet (S) ledda ljusvägen tillbaka i den motsatta riktningen i substratet (S).
9. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, att det kluvna gitterelementet (SG) är anordnat att utvidga utgängs- 20 pupillen av ett optiskt system.
10. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, att det kluvna gitterelementet (SG) är anordnat att utvidga utgängs- : pupillen av ett optiskt system med tvä okular eller ett okular. 25 .'•j
11. Diffraktivt gitterelement (SG) enligt patentkrav 1, kännetecknat av, att det kluvna gitterelementet (SG) är anordnat att utvidga utgängs-pupillen av en virtuell bildskärm. • I
FI20022199A 2002-12-16 2002-12-16 Diffraktivt gitterelement för balansering av diffraktionsverkningsgrad FI114946B (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FI20022199A FI114946B (sv) 2002-12-16 2002-12-16 Diffraktivt gitterelement för balansering av diffraktionsverkningsgrad
JP2004560539A JP4510639B2 (ja) 2002-12-16 2003-12-12 回折効率のバランスをとるための回折格子素子
KR1020057011005A KR100669162B1 (ko) 2002-12-16 2003-12-12 회절효율 밸런싱용 회절격자 요소
AU2003285384A AU2003285384A1 (en) 2002-12-16 2003-12-12 Diffractive grating element for balancing diffraction efficiency
US10/538,972 US7483604B2 (en) 2002-12-16 2003-12-12 Diffractive grating element for balancing diffraction efficiency
PCT/FI2003/000948 WO2004055556A1 (en) 2002-12-16 2003-12-12 Diffractive grating element for balancing diffraction efficiency
EP03778372.7A EP1573369B1 (en) 2002-12-16 2003-12-12 Pupil enlarging waveguide device with splitted diffractive grating for balancing diffraction efficiency
CN2003801063489A CN1726412B (zh) 2002-12-16 2003-12-12 用于平衡衍射效率的衍射光栅元件
PT37783727T PT1573369E (pt) 2002-12-16 2003-12-12 Guia de onda para alargamento da pupila com rede difractiva dividida para equilibrar a eficácia da difracção

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20022199 2002-12-16
FI20022199A FI114946B (sv) 2002-12-16 2002-12-16 Diffraktivt gitterelement för balansering av diffraktionsverkningsgrad

Publications (3)

Publication Number Publication Date
FI20022199A0 FI20022199A0 (sv) 2002-12-16
FI20022199A FI20022199A (sv) 2004-06-17
FI114946B true FI114946B (sv) 2005-01-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
FI20022199A FI114946B (sv) 2002-12-16 2002-12-16 Diffraktivt gitterelement för balansering av diffraktionsverkningsgrad

Country Status (9)

Country Link
US (1) US7483604B2 (sv)
EP (1) EP1573369B1 (sv)
JP (1) JP4510639B2 (sv)
KR (1) KR100669162B1 (sv)
CN (1) CN1726412B (sv)
AU (1) AU2003285384A1 (sv)
FI (1) FI114946B (sv)
PT (1) PT1573369E (sv)
WO (1) WO2004055556A1 (sv)

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FI20022199A (sv) 2004-06-17
WO2004055556A1 (en) 2004-07-01
JP2006510059A (ja) 2006-03-23
KR20050084322A (ko) 2005-08-26
KR100669162B1 (ko) 2007-01-16
US20060051024A1 (en) 2006-03-09
CN1726412A (zh) 2006-01-25
EP1573369A1 (en) 2005-09-14
FI20022199A0 (sv) 2002-12-16
JP4510639B2 (ja) 2010-07-28
AU2003285384A1 (en) 2004-07-09
CN1726412B (zh) 2010-05-12
EP1573369B1 (en) 2014-07-09
US7483604B2 (en) 2009-01-27
PT1573369E (pt) 2014-08-29

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