JP6238965B2 - ホログラフィック広角ディスプレイ - Google Patents
ホログラフィック広角ディスプレイ Download PDFInfo
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Description
本願は、2012年4月25日に出願された米国仮特許出願第61/687,436号及び2012年6月15日に出願された米国仮特許出願第61/689,907号の利益を主張する。これらはそれぞれ、全体が参照としてここに組み入れられる。
本特許又は出願のファイルは、カラーが施された少なくとも一つの図面を包含する。カラー図面を伴う本特許又は特許出願の公報の写しは、要求及び必要な手数料に応じて当該庁より与えられる。
a)視野角全体にわたり標準NVG(ナイトビジョンゴーグル)の分解能を超え、かつ、無限遠に焦点が合わされた高解像度デジタル画像、
b)単眼視野角(FOV)80°×40°のHMD、又は双眼FOV120°×40°の、当該FOVの中心で40°の立体視野角の重なりを伴うHMD、
c)遮るもののない外界のパノラマビュー、十分なアイボックス及び適度なアイレリーフを伴う高シースルー(90%以上)ディスプレイ、及び
d)ステップイン式バイザー並びに標準の砂、風及びほこりゴーグルの双方に良好に統合される軽量かつ扁平な設計である。
a)180°シースルー視認性、
b)フルカラー、
c)視野角52°×30°、
d)アイボックス30mm×30mm、
e)解像度2560×1440、
f)スネレン視力標準、
g)アイレリーフ30mm、
h)ユニバーサルIPD、
i)双眼、及び
j)ポリカーボネート光学機器である。
本発明者による出願日2011年10月7日、名称「WIDE ANGLE COLOR HEAD MOUNTED DISPLAY」の、本出願人の包袋番号SBG106によっても参照される米国仮特許出願第61/627,202号、
国際出願日2008年7月22日、名称「LASER ILLUMINATION DEVICE」の国際出願第US2008/001909号、
名称「METHOD AND APPARATUS FOR PROVIDING A TRANSPARENT DISPLAY」の国際出願第US2006/043938号、
名称「COMPACT EDGE ILLUMINATED EYEGLASS DISPLAY」の国際出願第GB2010/001982号、
国際出願日2010年4月26日、名称「Compact holographic edge illuminated eyeglass display」の国際出願第GB2010/000835号、
出願日2010年11月2日、名称「APPARATUS FOR REDUCING LASER SPECKLE」の国際出願第GB2010/002023号、
出願日2005年11月4日、名称「SWITCHABLE VIEWFINDER DISPLAY」の米国特許出願第10/555,661号、
出願日2010年9月28日、名称「Eye Tracked Holographic Edge Illuminated Eyeglass Display」の米国仮特許出願第61/344,748号、
本発明者による名称「IMPROVEMENTS TO HOLOGRAPHIC POLYMER DISPERSED LIQUID CRYSTAL MATERIALS AND DEVICES」の、現時点で出願番号は入手不可能だが本出願人の包袋番号SBG104により参照される米国仮特許出願、
出願日2011年6月16日、名称「HOLOGRAPHIC BEAM STEERING DEVICE FOR AUTOSTEREOSCOPIC DISPLAYS」の米国仮特許出願第61/457,835号、
国際出願日2008年6月22日、名称「LASER ILLUMINATION DEVICE」の国際出願第US2008/001909号、
本出願人による出願日2010年11月2日、名称「APPARATUS FOR REDUCING LASER SPECKLE」の国際出願第GB2010/002023号、
本発明者による出願日2011年9月7日、名称「METHOD AND APPARATUS FOR SWITCHING HPDLC ARRAY DEVICES」の、本出願人の包袋番号SBG105Bによっても参照される米国仮特許出願第61/573,121号、
国際出願日2010年4月26日、名称「COMPACT HOLOGRAPHIC EDGE ILLUMINATED EYEGLASS DISPLAY」の(及び本出願人の包袋番号SBG073PCTによっても参照される)国際出願第GB2010/000835号、及び
本発明者による名称「IMPROVEMENTS TO CONTACT IMAGE SENSORS」の、現時点で出願番号は入手不可能だが本出願人の包袋番号SBG100により参照される米国仮特許出願である。
a)マイクロテッセレーションの回折効果を考慮する必要がある。
b)マイクロテッセレーションの回折効果は、基本となる主テッセレーションパターンの回折効果とは別個である。
c)μTの使用は、マイクロテッセレーションを包含しない単数テッセレーションの使用と比較してMTFを劣化させる。しかしながら、マイクロテッセレーションにより、テッセレーションは大きな角度帯域を有することができる。これによって、所望のテッセレーション数が全体的に低減される。そして、これにより大きなテッセレーションが許容される。
d)μTの規則的パターンが、MTF周波数応答の許容不可能な瞬間的降下を引き起こすMTF変調を引き起こす。
e)MTFの瞬間的降下は、マイクロテッセレーションを空間的にランダムに配列することによって平均してならすことができる。なお、合理的なランダム配列を許容できる程度にμTを十分小さくする必要がある。μT幅に対する比が約8:1のテッセレーションが十分なようであるが、これは十分に探査されてきたわけではない。
f)μTの実装を成功させるには、テッセレーション間の視野角重畳量が極めて重要である。モデル化されたケースにおいて、マイクロテッセレーションのABW(角度帯域)は、テッセレーションABW全体の少なくとも1/2である。重畳が大きいほど、これが所与の視野角に対する利用可能アパチャを効率的に増加させるので、MTF性能の改善がもたらされる。
g)異なるグレーティング構成に対するトレードオフのケースをモデル化するツールがここに確立される。
1.基準設計
・モノクロ、6層、12タイル(アパチャ充填率50%)、1mmのテッセレーション
・眼の瞳3mm、均一性24%
2.再最適化グレーティング位置を異なる層に有する基準設計
・モノクロ、6層、12タイル(アパチャ充填率50%)、1mmのテッセレーション
・眼の瞳3mm、均一性20%
3.0.5mmのテッセレーションを使用する基準設計
・モノクロ、6層、12タイル(アパチャ充填率50%)、0.5mmのテッセレーション
・眼の瞳3mm、視野角にわたる約3%から2%の均一性
4.眼の瞳3mm(標的:C 屋外AR)
・3層、9タイル(アパチャ充填率33%)、0.5mmのテッセレーション
・16.5%までの均一性
5.眼の瞳4mm(標的:C 屋内映画)
・3層、9タイル(アパチャ充填率33%)、0.5mmのテッセレーション
・12%までの均一性
本発明者による出願日2011年10月7日、名称「WIDE ANGLE COLOR HEAD MOUNTED DISPLAY」の、本出願人の包袋番号SBG106によっても参照される米国仮特許出願第61/627,202号、
出願日2008年7月22日、名称「LASER ILLUMINATION DEVICE」の国際出願第US2008/001909号、
名称「METHOD AND APPARATUS FOR PROVIDING A TRANSPARENT DISPLAY」の国際出願第US2006/043938号、
名称「COMPACT EDGE ILLUMINATED EYEGLASS DISPLAY」の国際出願第GB2010/001982号、
国際出願日2010年4月26日、名称「Compact holographic edge illuminated eyeglass display」の国際出願第GB2010/000835号、
出願日2010年11月2日、名称「APPARATUS FOR REDUCING LASER SPECKLE」の国際出願第GB2010/002023号、
出願日2005年11月4日、名称「SWITCHABLE VIEWFINDER DISPLAY」の米国特許出願第10/555,661号、
出願日2010年9月28日、名称「Eye Tracked Holographic Edge Illuminated Eyeglass Display」の米国仮特許出願第61/344,748号、
本発明者による名称「IMPROVEMENTS TO HOLOGRAPHIC POLYMER DISPERSED LIQUID CRYSTAL MATERIALS AND DEVICES」の、現時点で出願番号は入手不可能だが本出願人の包袋番号SBG104により参照される米国仮特許出願、
出願日2011年6月16日、名称「HOLOGRAPHIC BEAM STEERING DEVICE FOR AUTOSTEREOSCOPIC DISPLAYS」の米国仮特許出願第61/457,835号、
国際出願日2008年7月22日、名称「LASER ILLUMINATION DEVICE」の国際出願第US2008/001909号、
本発明者による出願日2010年11月2日、名称「APPARATUS FOR REDUCING LASER SPECKLE」の国際出願第GB2010/002023号、
本発明者による出願日2011年9月7日、名称「METHOD AND APPARATUS FOR SWITCHING HPDLC ARRAY DEVICES」の、本出願人の包袋番号SBG105Bによっても参照される米国仮特許出願第61/573,121号、
国際出願日2010年4月26日、名称「COMPACT HOLOGRAPHIC EDGE ILLUMINATED EYEGLASS DISPLAY」(及び本出願人の包袋番号SBG073PCTによっても参照される)国際出願第GB2010/000835号、
本発明者による名称「IMPROVEMENTS TO CONTACT IMAGE SENSORS」の、現時点で出願番号は入手不可能だが本出願人の包袋番号SBG100により参照される米国仮特許出願、
出願日2011年9月16日、名称「Holographic wide angle near eye display」(SBGラボ参照番号SBG106A)の米国仮特許出願第61/573,156号、
出願日2011年9月19日、名称「Holographic wide angle near eye display」(SBGラボ参照番号SBG106B)の米国仮特許出願第61/573,175号、
出願日2011年9月19日、名称「Holographic wide angle near eye display」(SBGラボ参照番号SBG106C)の米国仮特許出願第61/573,176号、
出願日2011年9月25日、名称「Further improvements to holographic wide angle near eye display」 (SBGラボ参照番号SBG106D)の米国仮特許出願第61/573,196号、
出願日2011年10月7日、名称「Wide angle color head mounted display」(SBGラボ参照番号SBG106)の米国仮特許出願第61/627,202号、
出願日2012年4月25日、名称「Improvements to holographic wide angle head mounted display」 (SBGラボ参照番号SBG109)の米国仮特許出願第61/687,436号
Claims (16)
- 画像を表示する装置であって、
少なくとも第1の画像変調光及び第2の画像変調光を与えるべく構成される入力画像ノードと、
前記第1の画像変調光及び前記第2の画像変調光の少なくとも一方を少なくとも第1の方向に伝播させるべく構成されるホログラフィック導波路デバイスと
を含み、
前記ホログラフィック導波路デバイスは、複数の多重グレーティング要素を含み、
前記複数の多重グレーティング要素は、少なくとも一つの層に配置された第1の多重グレーティング要素及び第2の多重グレーティング要素を含み、
前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素は、前記少なくとも一つの層に散在され、
前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素はそれぞれ、第1の処方及び第2の処方を有し、
前記第1の画像変調光及び第2の画像変調光はそれぞれ、第1の視野角(FOV)及び第2のFOV画像情報によって変調され、
前記第1の多重グレーティング要素は、前記第1の画像変調光を偏向して第1FOVタイルを形成する第1の多重出力光線にするべく構成され、
前記第2の多重グレーティング要素は、前記第2の画像変調光を偏向して第2のFOVタイルを形成する第2の多重出力光線にするべく構成され、
前記少なくとも一つの層の中において、前記複数の多重グレーティング要素は、第1の帯域に散在する整数N1個の異なる処方を有し、
前記第1の帯域には、N1>N2である整数N2個の異なる処方の要素、N2>N3である整数N3個の異なる処方の要素、及びN3>N4である整数N4個の異なる処方の要素を包含する帯域が連続して左右に当接する装置。 - 前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素は、一の所定パターンにテッセレーション化される、請求項1に記載の装置。
- 前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素は、一の所定パターンにテッセレーション化され、前記所定パターンは、周期パターン、非周期パターン、自己相似パターン及びランダム分布パターンの少なくとも一つである、請求項1に記載の装置。
- 前記第1の多重グレーティング要素又は前記第2の多重グレーティング要素にある要素すべては、同時に回折状態に切り換えられるべく構成される、請求項1に記載の装置。
- 前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素の少なくとも一方が、正方形、三角形及び菱形の少なくとも一つを含む形状を有する、請求項1に記載の装置。
- 前記第1の多重グレーティング要素の複数の要素が第1の幾何形状を有し、かつ、前記第2の多重グレーティング要素の複数の要素が第2の幾何形状を有する、請求項1に記載の装置。
- 前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素の少なくとも一方が、少なくとも2つの異なる幾何形状を有する、請求項1に記載の装置。
- 前記少なくとも一つの層にあるすべての多重グレーティング要素が、一つの波長に最適化される、請求項1に記載の装置。
- 前記少なくとも一つの層にある前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素の少なくとも一方が、少なくとも2つの波長に最適化される、請求項1に記載の装置。
- 前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素の少なくとも一方が、少なくとも2つの異なる波長に最適化された多重化処方を有する、請求項1に記載の装置。
- 請求項1に記載の装置を含むデバイスであって、前記第1の画像変調光及び前記第2の画像変調光が左眼及び右眼の視点ビューを与える立体視ディスプレイの一部であるデバイス。
- 請求項1に記載の装置を含むデバイスであって、HMD、HUD及びHDDの少なくとも一つの一部であるデバイス。
- 所与の処方の少なくとも一つのグレーティング要素からの画像変調光が、人間の眼の瞳のアパチャを境界とする射出瞳領域内に存在する、請求項1に記載の装置。
- 前記第1の多重グレーティング要素及び前記第2の多重グレーティング要素の少なくとも一方が電気的に切り換え可能である、請求項1に記載の装置。
- 画像を表示する方法であって、
(i)一の入力画像ノードと、M及びNを整数として(M×N)の複数の多重グレーティング要素を含む一のホログラフィック導波路デバイスとを含む一の装置を与えることであって、少なくとも一つの層の中に散在する前記複数の多重グレーティング要素が、前記少なくとも一つの層の中において、第1の帯域に整数N1個の異なる処方を有し、前記第1の帯域には、N1>N2である整数N2個の異なる処方の要素、N2>N3である整数N3個の異なる処方の要素、及びN3>N4である整数N4個の異なる処方の要素を包含する帯域が連続して左右に当接することと、
(ii)整数1≦I≦N及び1≦J≦Mに対し視野角(FOV)タイル(I,J)に対応する前記入力画像ノードによって画像変調光(I,J)を生成することと、
(iii)FOVタイル(I,J)の複数の多重グレーティング要素をこれらの回折状態に切り換えることと、
(iv)FOVタイル(I,J)の複数の多重グレーティング要素を、画像変調光(I,J)によって照明することと、
(v)前記画像変調光(I,J)を回折してFOVタイル(I,J)にすることと
を含む方法。 - 完全なFOVタイルが達成されるまで(ii)〜(v)を繰り返すことをさらに含む、請求項15に記載の方法。
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2013
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JP2015523586A (ja) | 2015-08-13 |
EP2842003B1 (en) | 2019-02-27 |
CN106125308B (zh) | 2019-10-25 |
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CN103562802B (zh) | 2016-08-17 |
US20200241304A1 (en) | 2020-07-30 |
CN103562802A (zh) | 2014-02-05 |
CN106125308A (zh) | 2016-11-16 |
EP2842003A1 (en) | 2015-03-04 |
US20140104665A1 (en) | 2014-04-17 |
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