JP7365717B2 - 光ガイド光学アセンブリ - Google Patents
光ガイド光学アセンブリ Download PDFInfo
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- JP7365717B2 JP7365717B2 JP2021182264A JP2021182264A JP7365717B2 JP 7365717 B2 JP7365717 B2 JP 7365717B2 JP 2021182264 A JP2021182264 A JP 2021182264A JP 2021182264 A JP2021182264 A JP 2021182264A JP 7365717 B2 JP7365717 B2 JP 7365717B2
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- 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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
-
- 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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
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- 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
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- 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
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- 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
- G02B27/10—Beam splitting or combining systems
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- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
-
- 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
-
- 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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0028—Light guide, e.g. taper
-
- 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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the 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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0075—Arrangements of multiple light guides
-
- 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
-
- 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
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
- G02B2027/0116—Head-up displays characterised by optical features comprising device for genereting colour display comprising devices for correcting chromatic aberration
-
- 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
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
- G02B2027/0125—Field-of-view increase by wavefront division
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Laser Surgery Devices (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Endoscopes (AREA)
- Optical Elements Other Than Lenses (AREA)
- Lenses (AREA)
Description
図1は従来の先行技術の折り畳み式の光学構造を例示し、ここで、基板(2)は表示源(4)により照射される。表示はコリメート光学系(6)(例えばレンズ)によってコリメートされる。表示源(4)からの光は、主な光線(11)が基板平面と平行になるように、第1の反射面(8)によって基板(2)へ連結される。第2の反射面(12)は、基板からビューアーの目(14)へ光を連結する。この構造はコンパクトであるにもかかわらず、著しい欠点に苛まされている。とりわけ、非常に制限されたFOVだけしか達成することができない。
および該セットの第3の光学部品は、第2の拡大された光を外連結された光として第3の方向で外連結するために構成され;ここで、第1、第2および第3の方向は互いに平行ではない。
引用の便宜上、このセクションは、本明細書において用いられる略語、頭字語、および短い定義の簡潔なリストを含んでいる。このセクションによって本発明が制限されるとみなすべきではない。より完全な説明は、以下において、および適用可能な規格において見出されうる。
1D - 一次元
2D - 二次元
CRT - 陰極線管
EMB - アイモーションボックス
FOV - 視野
HMD - ヘッドマウントディスプレイ
HUD - ヘッドアップディスプレイ
LCD - 液晶ディスプレイ
LOE - 光ガイド光学素子
OLED - 有機発光ダイオードアレイ
OPL - 光路長
SLM - 空間光変調器
TIR - 全内反射
本実施形態に記載の装置の原理および操作は、図面および付随的な説明を参照して十分に理解されることもある。本発明は光学的開口拡大のための光学アセンブリである。その装置によって、回折技術(回折コンポーネント)とファセット反射技術(反射コンポーネント)が組み合わされる。回折コンポーネントを用いる革新的な実施形態は、相反する光パワー(一致)を有する少なくとも2つのコンポーネントを用い、その結果、第1の回折コンポーネントによってもたらされた波長分散が、その後、第2の回折コンポーネントによって取り消される。2つの回折コンポーネントは、(ニアアイディスプレイのための)反射光学部品と組み合わせて用いられ、それによってより効果的な開口拡大を達成し、歪みと雑音を低減する一方、従来の技術と比較して、システムおよび個別のコンポーネントにおける設計制約も低減している。
1)傾斜しているコーティングされたファセットによる反射(例えば、Lumus,Ltd.に対する米国特許第7,457,040号)。この反射技術は広域スペクトルを有し、したがって、単一の光ガイドからの全ての可視スペクトルを投影することができる。このファセットによって、典型的には、伝播する光線を部分的に反射し、伝送することの両方が行われるが、本明細書における簡潔さのために、この技術は、「反射光学部品」によって実施されるように、一般的に引用される。この反射は、典型的には偏光依存性である。
2)光ガイド面における回折パターン。当技術分野において公知のように、回折格子(パターン)は、回折格子の構造に応じて、伝播する光線を反射する、または伝送する。本明細書における簡潔さのために、この技術は、「回折光学部品」によって実施されるように、一般的に引用される。この回折技術はスペクトルおよび角度の両方において限定される。しかしながら、この技術の偏光依存性は低い。
本実施形態では、反射開口エキスパンダは回折エキスパンダの前にある。4つの光ガイドが使用され、それらは反射コンポーネント(201)、および3つの回折コンポーネント(205)、(206)および(207)である。反射コンポーネント(201)は反射を側方に拡大する光ガイドである。この反射光ガイド(201)は、1D光ガイド(図4のAの光ガイド(20)に類似)、または2D光ガイド(図8のCの光ガイド(10)に類似)であってもよい。反射光ガイド(201)へと連結する光は、内連結された光(38)の波長をすべて含み、したがって、反射光ガイド(201)は反射器(図4のAの反射面(16)など)、またはプリズム(図8のCの傾斜されたプリズム(7)など)を含みうる。
Claims (4)
- 光学的開口拡大のための装置であって、
(a)互いに平行な第1の対の外部面、および前記第1の対の外部面に対して非平行な、互いに平行な第2の対の外部面を有する第1の光ガイドであって、前記第1の対の外部面および前記第2の対の外部面は、4回の内部反射によって光をガイドする、第1の光ガイド、
(b)内部反射によって光をガイドする、互いに平行な第3の対の外部面を含む第2の光ガイド、
(c)4回の内部反射によって前記第1の光ガイド内に伝播するように、光を前記第1の光ガイドへと内連結するように展開される第1の回折光学部品、
(d)前記第1の光ガイドを少なくとも部分的に横断する、前記第1の対の外部面に対して非平行な、互いに平行で部分的に反射する内部面のセットを含む反射光学部品であって、前記反射光学部品は、前記第1の光ガイド内に伝播する光を偏向させて前記第1の光ガイドを出て、前記第2の光ガイドに入るように展開され、前記第3の対の外部面における内部反射によって前記第2の光ガイド内を伝播させる、反射光学部品、ならびに
(e)前記第1の回折光学部品とピッチが一致する第2の回折光学部品であって、前記光を前記第2の光ガイドから観察者の方へ外連結するために構成される、第2の回折光学部品
を含む、装置。 - (a)前記第1の回折光学部品は、前記第1の光ガイド内の拡大の第1の方向で、前記第1の光ガイドへと内連結された光を方向付けるために構成され、それによって、第1の拡大された光を生成し、
(b)前記反射光学部品は、拡大の第2の方向で、前記第1の拡大された光を前記第2の光ガイドへと連結するために構成され、それによって、第2の拡大された光を生成し、および
(c)前記第2の回折光学部品は、前記第2の拡大された光を、前記観察者の方へ外連結された光として第3の方向で外連結するために構成され、
(d)ここで、第1、第2および第3の方向は互いに平行ではない、請求項1に記載の装置。 - 前記第1の回折光学部品および前記第2の回折光学部品は、それぞれの回析格子(パターン)が互いに平行ではないように実装される、請求項1に記載の装置。
- 前記第1の回折光学部品は、前記第1の光ガイド内に埋め込まれるか、前記第1の光ガイドの表面上、からなる群から選択される位置で構成される、請求項1に記載の装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2023168964A JP2023171872A (ja) | 2017-02-22 | 2023-09-29 | 光ガイド光学アセンブリ |
Applications Claiming Priority (4)
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US201762461805P | 2017-02-22 | 2017-02-22 | |
US62/461,805 | 2017-02-22 | ||
PCT/IL2018/050205 WO2018154576A1 (en) | 2017-02-22 | 2018-02-22 | Light guide optical assembly |
JP2018510950A JP6980209B2 (ja) | 2017-02-22 | 2018-02-22 | 光ガイド光学アセンブリ |
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JP2018510950A Division JP6980209B2 (ja) | 2017-02-22 | 2018-02-22 | 光ガイド光学アセンブリ |
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JP2023168964A Division JP2023171872A (ja) | 2017-02-22 | 2023-09-29 | 光ガイド光学アセンブリ |
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JP2022028761A JP2022028761A (ja) | 2022-02-16 |
JP2022028761A5 JP2022028761A5 (ja) | 2023-08-28 |
JP7365717B2 true JP7365717B2 (ja) | 2023-10-20 |
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JP2018510950A Active JP6980209B2 (ja) | 2017-02-22 | 2018-02-22 | 光ガイド光学アセンブリ |
JP2021182264A Active JP7365717B2 (ja) | 2017-02-22 | 2021-11-09 | 光ガイド光学アセンブリ |
JP2023168964A Pending JP2023171872A (ja) | 2017-02-22 | 2023-09-29 | 光ガイド光学アセンブリ |
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Country Status (8)
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US (6) | US10302835B2 (ja) |
EP (1) | EP3397998A4 (ja) |
JP (3) | JP6980209B2 (ja) |
KR (4) | KR102338472B1 (ja) |
CN (1) | CN108738358B (ja) |
IL (3) | IL292456B (ja) |
TW (1) | TWI754010B (ja) |
WO (1) | WO2018154576A1 (ja) |
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