JP2017151444A - ホログラフィック補正を用いたホログラフィック画像投影 - Google Patents
ホログラフィック補正を用いたホログラフィック画像投影 Download PDFInfo
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Abstract
【解決手段】二次元画像を表すフーリエ領域データを第1のレンズ効果を有するフーリエ領域データと合成して第1のホログラフィックデータを生成することを含む。光が第1のホログラフィックデータで空間的に変調されて、第1の空間的に変調された光ビームが形成される。第1の空間的に変調された光ビームは、光学素子の第1の領域を第1の空間的に変調されたビームで照明することにより光学素子を用いて方向転換される。第1のレンズ効果は第1の領域における光学素子の光学パワーを補償する。
【選択図】図6
Description
F’は逆フーリエ変換であり、
Fは順フーリエ変換であり、
Rは再生フィールドであり、
Tは対象画像であり、
∠は角度情報であり、
Ψは角度情報の量子化バージョンであり、
εは新たな目標マグニチュードであり、ε≧0、
αは利得要素〜1である。
Claims (15)
- 空間的に変化する光学パワーを有する光学素子を用いて投影する方法であって、
二次元画像を表すフーリエ領域データを第1のレンズ効果を有するフーリエ領域データと合成して第1のホログラフィックデータを生成することと、
前記第1のホログラフィックデータで光を空間的に変調して第1の空間的に変調された光ビームを形成することと、
前記光学素子の第1の領域を前記第1の空間的に変調されたビームで照明することにより前記光学素子を用いて前記第1の空間的に変調された光ビームの方向を変更することと、
を含み、
前記第1のレンズ効果は前記第1の領域における前記光学素子の前記光学パワーを補償する、方法。 - 前記二次元画像を表す前記フーリエ領域データを第2のレンズ効果を有するフーリエ領域データと合成して第2のホログラフィックデータを生成することと、
前記第2のホログラフィックデータで光を空間的に変調して第2の空間的に変調された光ビームを形成することと、
前記光学素子の第2の領域を前記第2の空間的に変調されたビームで照明することと、
をさらに含み、
前記第2のレンズ効果は前記第2の領域における前記光学素子の前記光学パワーを補償する、請求項1に記載の方法。 - 前記第1および第2のレンズ効果は、それぞれ前記第1および第2の領域における前記光学素子の前記光学パワーを実質的に打ち消す、請求項2に記載の方法。
- 前記光学素子は前記第1および第2の空間的に変調された光ビームを視認面へと方向転換するように構成されている、請求項2または3に記載の方法。
- 前記第1および第2の空間的に変調された光ビームは、前記視認面において実質的に隣接している、請求項2から4のいずれか一項に記載の方法。
- 前記第1および第2の空間的に変調された光ビームは、前記視認面において重なり合わない、請求項2から5のいずれか一項に記載の方法。
- 方向転換された前記第1の空間的に変調された光ビームの収束性または発散性は、方向転換された前記第2の空間的に変調された光ビームの収束性または発散性と実質的に等しい、請求項2から6のいずれか一項に記載の方法。
- 請求項2から7のいずれか一項に記載の方法であって、
前記第1のホログラフィックデータで光を空間的に変調して第1の空間的に変調された光ビームを形成し、前記第2のホログラフィックデータで光を空間的に変調して第2の空間的に変調された光ビームを形成することは、
少なくとも1つの空間光変調器上に前記第1および第2のホログラフィックデータを表示することと、
前記少なくとも1つの空間光変調器を平面波で照明して前記第1および第2のホログラフィックデータにそれぞれ対応する前記第1および第2の空間的に変調された光ビームを形成することと、を含む方法。 - 前記光学素子が車両のフロントガラスである、請求項1から8のいずれか一項に記載の方法。
- 二次元画像を表すフーリエ領域データを第1のレンズ効果を有するフーリエ領域データと合成して第1のホログラフィックデータを生成するように構成された処理手段と、
前記第1のホログラフィックデータを表示するように配置されたピクセルのアレイを備える少なくとも1つの空間光変調器と、
空間的に変化する光学パワーを有する光学素子であって、第1の光学パワーを有する第1の領域を備える前記光学素子と、
を備え、
前記第1のレンズ効果は前記第1の光学パワーを補償する、プロジェクタ。 - 前記処理手段は、さらに、前記二次元画像を表す前記フーリエ領域データを第2のレンズ効果を有するフーリエ領域データと合成して第2のホログラフィックデータを生成するように構成され、
前記少なくとも1つの空間光変調器は、前記第2のホログラフィックデータを表示するように配置されたピクセルのアレイをさらに備え、
前記光学素子は、第2の光学パワーを有する第2の領域をさらに備え、
前記第2のレンズ効果は前記第2の光学パワーを補償する、請求項10に記載のプロジェクタ。 - 前記少なくとも1つの空間光変調器が、前記第1のホログラフィックデータを表示するように配置されたピクセルのアレイを備える第1の空間光変調器と、前記第2のホログラフィックデータを表示するように配置されたピクセルのアレイを備える第2の空間光変調器とを備える、請求項11に記載のプロジェクタ。
- 前記少なくとも1つの空間光変調器を平面波で照明するように構成された光源をさらに備える、請求項10から12のいずれか一項に記載のプロジェクタ。
- 複数の二次元画像を表すフーリエ領域データのリポジトリをさらに備える、請求項10から13のいずれか一項に記載のプロジェクタ。
- 前記光学素子が車両のフロントガラスである、請求項10から14のいずれか一項に記載のプロジェクタ。
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