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FR2942549B1 - Reseau de diffraction polarisant, coupleur a reseau de diffraction polarisant et systeme planaire d'imagerie ou de transport de faisceau optique a coupleurs diffractifs polarisants - Google Patents

Reseau de diffraction polarisant, coupleur a reseau de diffraction polarisant et systeme planaire d'imagerie ou de transport de faisceau optique a coupleurs diffractifs polarisants

Info

Publication number
FR2942549B1
FR2942549B1 FR0951199A FR0951199A FR2942549B1 FR 2942549 B1 FR2942549 B1 FR 2942549B1 FR 0951199 A FR0951199 A FR 0951199A FR 0951199 A FR0951199 A FR 0951199A FR 2942549 B1 FR2942549 B1 FR 2942549B1
Authority
FR
France
Prior art keywords
polarizing
grating
diffraction network
optical beam
polarizing diffraction
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
FR0951199A
Other languages
English (en)
Other versions
FR2942549A1 (fr
Inventor
Frederic Desserouer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Horiba Jobin Yvon SAS
Original Assignee
Horiba Jobin Yvon SAS
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 Horiba Jobin Yvon SAS filed Critical Horiba Jobin Yvon SAS
Priority to FR0951199A priority Critical patent/FR2942549B1/fr
Publication of FR2942549A1 publication Critical patent/FR2942549A1/fr
Application granted granted Critical
Publication of FR2942549B1 publication Critical patent/FR2942549B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1861—Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2726—Optical coupling means with polarisation selective and adjusting means in or on light guides, e.g. polarisation means assembled in a light guide
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
    • G02B6/2793—Controlling polarisation dependent loss, e.g. polarisation insensitivity, reducing the change in polarisation degree of the output light even if the input polarisation state fluctuates
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/34—Optical coupling means utilising prism or grating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)

Abstract

L'invention concerne un réseau de diffraction en réflexion apte à recevoir un faisceau optique de longueur d'onde λ provenant d'un milieu incident (3) sous un angle d'incidence θ compris entre θ -Δθ et θ +Δθ par rapport à la normale au plan du réseau, ledit réseau comprenant un substrat plan comprenant un ensemble de traits de pas Λ, le rapport entre la longueur d'onde λ du faisceau incident et le pas du réseau Λ étant supérieur à 0,7 et le profil des traits étant un profil triangulaire asymétrique de manière à favoriser la diffraction du faisceau incident dans un ordre P, ledit substrat étant métallique ou recouvert d'une couche métallique (2'), et ledit réseau comprenant une couche mince (4) en matériau diélectrique, dont l'indice de réfraction n est supérieur à l'indice de réfraction du milieu incident, ladite couche mince diélectrique recouvrant la surface métallique du réseau. Selon l'invention, le matériau de la couche diélectrique est un matériau haut indice ayant une épaisseur d et un contraste d'indice par rapport au milieu incident C= (n - n )/(n ) prédéterminés de manière à ce que l'efficacité de diffraction dans l'ordre P soit supérieure en polarisation TE par rapport à l'efficacité de diffraction en polarisation TM pour une gamme d'angles d'incidence 0 compris entre θ -Δθ et θ Δθ.
FR0951199A 2009-02-25 2009-02-25 Reseau de diffraction polarisant, coupleur a reseau de diffraction polarisant et systeme planaire d'imagerie ou de transport de faisceau optique a coupleurs diffractifs polarisants Active FR2942549B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0951199A FR2942549B1 (fr) 2009-02-25 2009-02-25 Reseau de diffraction polarisant, coupleur a reseau de diffraction polarisant et systeme planaire d'imagerie ou de transport de faisceau optique a coupleurs diffractifs polarisants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0951199A FR2942549B1 (fr) 2009-02-25 2009-02-25 Reseau de diffraction polarisant, coupleur a reseau de diffraction polarisant et systeme planaire d'imagerie ou de transport de faisceau optique a coupleurs diffractifs polarisants

Publications (2)

Publication Number Publication Date
FR2942549A1 FR2942549A1 (fr) 2010-08-27
FR2942549B1 true FR2942549B1 (fr) 2011-09-02

Family

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FR0951199A Active FR2942549B1 (fr) 2009-02-25 2009-02-25 Reseau de diffraction polarisant, coupleur a reseau de diffraction polarisant et systeme planaire d'imagerie ou de transport de faisceau optique a coupleurs diffractifs polarisants

Country Status (1)

Country Link
FR (1) FR2942549B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014016343A2 (fr) * 2012-07-25 2014-01-30 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Procédé pour optimiser un guide d'onde de couplage de lumière
WO2014118925A1 (fr) * 2013-01-31 2014-08-07 株式会社島津製作所 Réseau de diffraction pour compression d'impulsions laser et dispositif laser
US10197804B2 (en) * 2016-04-25 2019-02-05 Microsoft Technology Licensing, Llc Refractive coating for diffractive optical elements
EP3825744B1 (fr) 2016-06-13 2024-01-31 Dai Nippon Printing Co., Ltd. Film guide de lumière, structure pour la prévention des contrefaçons et article anti-contrefaçon
JP7447237B2 (ja) * 2019-07-19 2024-03-11 マジック リープ， インコーポレイテッド 低減された偏光感度を伴う回折格子を有するディスプレイデバイス
EP4028354A4 (fr) * 2019-09-11 2023-11-22 Magic Leap, Inc. Dispositif d'affichage pourvu d'un réseau de diffraction à sensibilité de polarisation réduite
CN111708113B (zh) * 2020-08-24 2020-11-17 苏州大学 低偏振高衍射效率金属反射浸没光栅及光学系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002098820A (ja) * 2000-09-21 2002-04-05 Nippon Sheet Glass Co Ltd 反射型回折格子
JP2005121938A (ja) * 2003-10-17 2005-05-12 Nippon Sheet Glass Co Ltd 偏光制御膜付き回折格子およびそれを用いた回折光学装置
ES2547378T3 (es) * 2005-09-07 2015-10-05 Bae Systems Plc Dispositivo de visualización por proyección con dos guías de onda coplanares en forma de placa que incluyen rejillas

Also Published As

Publication number Publication date
FR2942549A1 (fr) 2010-08-27

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