JP2017194693A - 広視野の仮想画像プロジェクタ - Google Patents
広視野の仮想画像プロジェクタ Download PDFInfo
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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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
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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
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
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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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
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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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/34—Optical coupling means utilising prism or grating
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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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
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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
- G02B27/0101—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
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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
- G02B2027/0178—Eyeglass type
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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
- G02B6/0028—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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
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- Optical Couplings Of Light Guides (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
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Abstract
Description
仮想画像は、ビデオプロジェクタを、格子が浮き出しにされたライトガイドに向けて、ライトガイドの表面から仮想画像を投影することによって、作成され得る。眼鏡が仮想画像プロジェクタを含むことが可能であり、仮想画像をその眼鏡の着用者の目の前に投影する。仮想画像プロジェクタは、眼鏡に配置するには十分に小さいが、典型的には狭視野の仮想画像を投影する。
広視野の仮想画像プロジェクタを実装するための技術及び装置の実施形態は、図面との関連で説明される。図面を通して、同じ番号を使用して類似の機能又は構成要素を示す。
仮想画像は、ビデオプロジェクタを、格子が浮き出しにされたライトガイドに向けて、ライトガイドの表面から仮想画像を投影することによって、作成され得る。眼鏡が仮想画像プロジェクタを含むことが可能であり、仮想画像をその眼鏡の着用者の目の前に投影する。典型的な仮想画像プロジェクタは、眼鏡に配置するには十分に小さいが、仮想画像をわずか30度の水平視野で投影する。
図1は、広視野の仮想画像プロジェクタ(ここでは「仮想画像プロジェクタ」)を実装することができる例示の環境100の図である。環境100を、仮想画像ディスプレイデバイス102において実装することができる。仮想画像ディスプレイデバイス102は、限定ではなく例として、頭部装着型ディスプレイデバイス104又はフラットパネル型ディスプレイデバイス106として図示されている。頭部装着型ディスプレイデバイス104は、眼鏡、サングラス、ゴーグル又は任意の他のタイプの頭部装着型ディスプレイデバイスを含むことができる。フラットパネル型ディスプレイデバイス106は、テレビジョン、デスクトップコンピュータ、ラップトップ、モバイルコンピューティングデバイス又はタブレットコンピューティングデバイスのような、仮想、3次元(3D)及び/又はマルチビュー画像を生成することができる任意のタイプのフラットパネルのディスプレイデバイスを含み得る。
図7は、仮想画像プロジェクタを制御して広視野の仮想画像を生成する、例示の方法700を示すフロー図である。ブロック702において、仮想画像に対応するデータ(例えば映画又はテレビ番組に対応するビデオデータ)を受信する。例えばコントローラ116(図1)は、仮想画像に対応するデータを受信する。
図8は、図1〜図7に関して前述したような、広視野の仮想画像プロジェクタを可能にする技術を実装する任意のタイプのクライアント、サーバ及び/又はディスプレイデバイスとして実装可能な例示のデバイス800の様々な構成要素を図示している。諸実施形態において、デバイス800を、有線及び/又は無線のデバイス、頭部装着型ディスプレイデバイス(例えば眼鏡、サングラス等)、フラットパネル型ディスプレイの形式として、テレビジョンクライアントデバイス(例えばテレビジョンセットトップボックス、デジタルビデオレコーダ(DVR)等)、消費者デバイス、コンピュータデバイス、サーバデバイス、ポータブルコンピュータデバイス、ユーザデバイス、通信デバイス、ビデオ処理及び/又はレンダリングデバイス、アプライアンスデバイス、ゲームデバイス、電気デバイスの1つ又は組合せとして及び/又は別のタイプのデバイスとして実装することができる。デバイス800を、デバイスが、ユーザ、ソフトウェア、ファームウェア及び/又はデバイスの組合せを含む論理デバイスを記述するように、デバイスを操作するビューア(例えば人又はユーザ)及び/又はエンティティと関連付けてもよい。
本明細書は、広視野の仮想画像プロジェクタを実装するための様々な装置及び技術を説明している。本発明は、構造的特徴及び/又は方法論的動作に特有の言語で説明されているが、特許請求の範囲において定義される本発明は、必ずしも、説明された具体的な特徴又は動作に限定されないことを理解されたい。むしろ、具体的な特徴及び動作は、特許請求に係る発明を実装する例示の形式として開示される。
Claims (20)
- 仮想画像に対応するデータを受信するステップと;
第1の光線を第1の角度の範囲でロッドライトガイドの外に回折してスラブライトガイドに入れるのに効果的であるように、前記第1の光線を前記ロッドライトガイドの第1の回折格子へ入れるよう、イルミネータを制御するステップと;
第2の光線を第2の角度の範囲で前記ロッドライトガイドの外に回折して前記スラブライトガイドに入れるのに効果的であるように、前記第2の光線を前記ロッドライトガイドの第2の回折格子へ入れるよう、前記イルミネータを制御するステップであって、前記第1の回折格子は、前記ロッドライトガイドの第1の面上の第2の回折格子と実質的に並列であり、前記スラブライトガイドは前記仮想画像を生成するよう構成される、ステップと;
を具備する、方法。 - 前記スラブライトガイドは、前記第1の角度の範囲と前記第2の角度の範囲の合計に等しい視野を有する前記仮想画像を生成するように構成される、
請求項1に記載の方法。 - 前記第1の角度の範囲は、前記第2の角度の範囲と異なる、
請求項1に記載の方法。 - 第3の光線が第3の角度の範囲で前記ロッドライトガイドの外に回折して前記スラブライトガイドに入るのに効果的であるように、前記第3の光線を前記ロッドライトガイドの第3の回折格子へ入れるよう、前記イルミネータを制御するステップ、を更に備える、
請求項1に記載の方法。 - 第4の光線が第4の角度の範囲で前記ロッドライトガイドの外に回折して前記スラブライトガイドに入るのに効果的であるように、前記第4の光線を前記ロッドライトガイドの第4の回折格子へ入れるよう、前記イルミネータを制御するステップ、を更に備える、
請求項4に記載の方法。 - 前記スラブライトガイドは、前記第1の角度の範囲、前記第2の角度の範囲、前記第3の角度の範囲及び前記第4の角度の範囲の合計に等しい視野を有する前記仮想画像を生成するように構成される、
請求項5に記載の方法。 - 前記第1の角度の範囲は約−60度から−30度であり、前記第2の角度の範囲は約−30度から0度であり、前記第3の角度の範囲は約0度から30度であり、前記第4の角度の範囲は約30度から60度である、
請求項5に記載の方法。 - 前記スラブライトガイドは、約120度の視野を有する前記仮想画像を生成するように構成される、
請求項1に記載方法。 - 前記スラブライトガイドは、前記第1の回折格子及び前記第2の回折格子に概ね平行の第3の回折格子が浮き出しにされ、該第3の回折格子は、前記回折された第1の光線及び前記回折された第2の光線を前記スラブライトガイドの外に投影させて、前記仮想画像を生成させるように構成される、
請求項1に記載の方法。 - 前記第1の回折格子は、前記第2の回折格子の第2の空間周波数と異なる第1の空間周波数を有し、該第1の空間周波数は、前記第1の回折格子に、前記回折された第1の光線を前記第1の角度の範囲で投影させ、前記第2の空間周波数は、前記第2の回折格子に、前記回折された第2の光線を前記第2の角度の範囲で投影させる、
請求項1に記載の方法。 - 前記スラブライトガイドは、前記回折された第1の光線及び前記回折された第2の光線の各々の一部分を反射し、別の部分を伝送するように構成される部分反射鏡とともに構成される、
請求項1に記載の方法。 - 1つ以上のプロセッサによる実行に応答して、該1つ以上のプロセッサに:
仮想画像に対応するデータを受信するステップと;
第1の光線を第1の角度の範囲でロッドライトガイドの外に回折してスラブライトガイドに入れるのに効果的であるように、前記第1の光線を前記ロッドライトガイドの第1の回折格子へ入れるよう、イルミネータを制御するステップと;
第2の光線を第2の角度の範囲で前記ロッドライトガイドの外に回折して前記スラブライトガイドに入れるのに効果的であるように、前記第2の光線を前記ロッドライトガイドの第2の回折格子へ入れるよう、前記イルミネータを制御するステップであって、前記第1の回折格子は、前記ロッドライトガイドの第1の面上の第2の回折格子と実質的に並列であり、前記スラブライトガイドは前記仮想画像を生成するよう構成される、ステップと;
を具備する動作を実行させる、コンピュータプログラム。 - 前記スラブライトガイドは、前記第1の角度の範囲と前記第2の角度の範囲の合計に等しい視野を有する前記仮想画像を生成するように構成される、
請求項12に記載のコンピュータプログラム。 - 前記第1の角度の範囲は、前記第2の角度の範囲と異なる、
請求項12に記載のコンピュータプログラム。 - 前記動作は、第3の光線が第3の角度の範囲で前記ロッドライトガイドの外に回折して前記スラブライトガイドに入るのに効果的であるように、前記第3の光線を前記ロッドライトガイドの第3の回折格子へ入れるよう、前記イルミネータを制御するステップ、を更に備える、
請求項12に記載のコンピュータプログラム。 - 前記動作は、第4の光線が第4の角度の範囲で前記ロッドライトガイドの外に回折して前記スラブライトガイドに入るのに効果的であるように、前記第4の光線を前記ロッドライトガイドの第4の回折格子へ入れるよう、前記イルミネータを制御するステップ、を更に備える、
請求項15に記載のコンピュータプログラム。 - 前記スラブライトガイドは、前記第1の角度の範囲、前記第2の角度の範囲、前記第3の角度の範囲及び前記第4の角度の範囲の合計に等しい視野を有する前記仮想画像を生成するように構成される、
請求項16に記載のコンピュータプログラム。 - 前記第1の角度の範囲は約−60度から−30度であり、前記第2の角度の範囲は約−30度から0度であり、前記第3の角度の範囲は約0度から30度であり、前記第4の角度の範囲は約30度から60度である、
請求項16に記載のコンピュータプログラム。 - 前記スラブライトガイドは、前記第1の回折格子及び前記第2の回折格子に概ね平行の第3の回折格子が浮き出しにされ、該第3の回折格子は、前記回折された第1の光線及び前記回折された第2の光線を前記スラブライトガイドの外に投影させて、前記仮想画像を生成させるように構成される、
請求項12に記載のコンピュータプログラム。 - 前記第1の回折格子は、前記第2の回折格子の第2の空間周波数と異なる第1の空間周波数を有し、該第1の空間周波数は、前記第1の回折格子に、前記回折された第1の光線を前記第1の角度の範囲で投影させ、前記第2の空間周波数は、前記第2の回折格子に、前記回折された第2の光線を前記第2の角度の範囲で投影させる、
請求項12に記載のコンピュータプログラム。
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US13/494,722 US9019615B2 (en) | 2012-06-12 | 2012-06-12 | Wide field-of-view virtual image projector |
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