JP2015148812A - プロジェクタ、ならびにシネマ、エンターテイメントシステム、ディスプレイを含む他の発光装置のためのレーザ光源の局所的調光 - Google Patents
プロジェクタ、ならびにシネマ、エンターテイメントシステム、ディスプレイを含む他の発光装置のためのレーザ光源の局所的調光 Download PDFInfo
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- JP2015148812A JP2015148812A JP2015069094A JP2015069094A JP2015148812A JP 2015148812 A JP2015148812 A JP 2015148812A JP 2015069094 A JP2015069094 A JP 2015069094A JP 2015069094 A JP2015069094 A JP 2015069094A JP 2015148812 A JP2015148812 A JP 2015148812A
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Abstract
【解決手段】レーザ光源アレイからの光を、DMDまたは他の変調器の変調面をカバーするように拡散させる。この拡散は、例えば、曲率の異なる小型レンズのアレイによって実現することができ、各レーザ光は、それらの小型レンズのいずれか1つに向けられる。隣接する光源および/または周辺の光源からの光は、変調器においてオーバラップする。レーザが、様々に異なるエネルギー/輝度レベルでエネルギーを付与されることで、変調器を照明する光は、それ自体、変調(局所的調光、ローカルディミング)されている。そして、変調器は、局所的に調光された光をさらに変調することで、所望の画像を生成する。本発明に係るプロジェクタは、例えば、シーケンシャルに照明される単一の変調器を用いるか、または同時に照明される個別の原色変調器を用いることができる。
【選択図】 図6
Description
図3は、本発明の一実施形態による光源束305およびリダイレクト・ブロック335の図である。図示のように、リダイレクト・ブロック335は、複数の光源(光源束305)からの光を受けて、個々の光源のビームを変調器320に向けてリダイレクトする、多重リダイレクト・ブロックである。このリダイレクトは、光学素子(例えば、光学素子330および332)によって提供される。光学素子は、例えば、反射器またはビームスプリッタ(例えば、分割ビームの一部分は変調器320に向けられ、その他の部分は第2の変調器に向けられる)(例えば、ある光ビームを通過させ、他の光ビームを同一または同様の光路に反射するように構成されたスプリッタ)とすることができる。光学素子は、該光学ブロックに埋め込まれたミラーまたは銀面とすることができる。また、光学素子は、全反射を生じさせる光学ブロックにおける模様(impression)または他の変化(permutation)とすることもできる。各光路に、1つよりも多くの光学素子(または反射器)を用いることができる。
本発明について、本明細書では、レーザ光で照明する場合に関して説明したが、本発明は、広帯域またはより広帯域の光源(例えば、LED、ナノチューブベースの光源など)を用いて実施することもできる。図面に示す本発明の好ましい実施形態についての説明では、明確にするために具体的な用語を用いている。しかしながら、本発明は、そのように選択された特定の用語に限定されるものではなく、具体的要素のそれぞれは、同様に機能するあらゆる技術的均等物を含むものと理解されるべきである。
Claims (16)
- プロジェクタであって、
複数の狭バンド光を受け取るように配置されたスプレッダ要素と、
前記スプレッダ要素から出た後の複数の狭バンド光を受け取るように配置された変調面を有する空間光変調器と、
ここで、前記スプレッダ要素は、前記スプレッダ要素から出る複数の狭バンド光の各々が点広がり関数(PSF)を示して、前記変調面上の複数の狭バンド光の隣接する狭バンド光群がオーバラップ・パターンで互いに拡散し、前記変調面上の複数の狭バンド光のうちの少なくとも一つが全ての隣接する狭バンド光群の中央エリアを通過するように拡散し、かつ少なくとも一つの隣接する狭バンド光よりも向こう側にある一つの狭バンド光の少なくとも一つの中央エリアを通過するように拡散するように構成されており、
前記空間光変調器のピクセルにおける画像データおよび異なる輝度レベルに基づいて前記空間光変調器にエネルギーを与えるように構成された制御器と、
視聴用に前記空間光変調器により変調された光を投光するように構成されたプロジェクション機構とを備えるプロジェクタ。 - 前記複数の狭バンド光の混合量は、前記変調面に亘って変化する、請求項1に記載のプロジェクタ。
- 前記複数の狭バンド光は、前記変調面のエッジと比較して前記変調面の中央エリアにおいてより大きく混合される、請求項1に記載のプロジェクタ。
- 前記オーバラップ・パターンは、原色光のオーバラップ・インスタンスを含む、請求項1に記載のプロジェクタ。
- 前記オーバラップ・パターンは、原色光を用いた前記空間光変調器のシーケンシャルな照明を含んで、前記オーバラップ・パターンが、第1の時間期間において第1の原色光、第2の時間期間において第2の原色光、及び第3の時間期間において第3の原色光のオーバラップ・パターンを含むようにする、請求項1に記載のプロジェクタ。
- プロジェクタは、局所的に調光されるレーザプロジェクタを含み、複数の狭バンド光は、少なくとも一つのレーザ光源から発生したものであり、複数の狭バンド光は、表示すべき画像の画像データによって特定される減少された照明の領域において局所的に調光される、請求項1に記載のプロジェクタ。
- 前記空間光変調器のピクセルに対するエネルギー付与レベルは、オーバラップ・パターンの光照射野シミュレーション(LFS)に少なくとも部分的に基づく、請求項1に記載のプロジェクタ。
- 第2の複数の狭バンド光を受け取り、該第2の複数の狭バンド光の各光を第2の空間光変調器上のオーバラップ・パターンに拡散する第2のスプレッダ要素と、
第3の複数の狭バンド光を受け取り、該第3の複数の狭バンド光の各光を第3の空間光変調器上のオーバラップ・パターンに拡散する第3のスプレッダ要素とを更に備える請求項1に記載のプロジェクタ。 - 前記複数の狭バンド光は、複数の第1の原色光光源のみを含み、前記第2の複数の狭バンド光は、複数の第2の原色光光源のみを含み、前記第3の複数の狭バンド光は、複数の第3の原色光光源のみを含む、請求項8に記載のプロジェクタ。
- 第1、第2、及び第3の空間光変調器は、カラープリズムの個別の面上に配置され、該カラープリズムは、第1、第2、及び第3の空間光変調器の各々からの変調された光を合成し、会場のスクリーンへの投影のためのレンズに合成および変調された光を指向させる、請求項9に記載のプロジェクタ。
- 方法であって、
画像データに従って複数のレーザ光源に複数のエネルギー輝度レベルでエネルギーを付与するステップと、
前記複数のレーザ光源により放射された光をスプレッダに指向させるステップと、
レーザ光が少なくとも一つの変調器の変調面上で光のオーバラップ・パターンを形成するようにレーザ光を拡散するステップであって、光のオーバラップ・パターンは、局所的に調光された光のパターンを含み、前記変調面上の全ての光は、前記変調面上の各隣接する光に拡散し、少なくとも一つの光は、各隣接する光の中央エリアを通過するように拡散し、かつ少なくとも一つの光と隣接していない光の中央エリアを通過するように拡散する、前記拡散するステップと、
光のオーバラップ・パターンを変調するステップと、
視聴用のスクリーンに変調された光を投光するステップと
を含む方法。 - 投光されるべき画像のより暗い領域に対応する前記複数のレーザ光源のうちの少なくとも一つからの光を、画像のより明るい領域に対応する変調器の領域に再指向するステップを更に含む請求項11に記載の方法。
- 隣接する領域以上の領域が拡散によりオーバラップされる、請求項11に記載の方法。
- 前記変調面上の光のオーバラップ・パターンの光照射野シミュレーションを計算し、前記光照射野シミュレーションおよび画像データに基づいて前記変調面の各ピクセルに対する変調量を計算するステップを更に含む請求項11に記載の方法。
- 光のオーバラップ・パターンは、前記変調面に亘るオーバラップの量で変化する、請求項11に記載の方法。
- オーバラップ量の変化は、前記変調面に亘り緩やかに変化する、請求項15に記載の方法。
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JP6416852B2 (ja) | 2018-10-31 |
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CN103430553B (zh) | 2016-08-31 |
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EP2687017B1 (en) | 2017-06-21 |
CN106200236B (zh) | 2018-07-20 |
CN103430553A (zh) | 2013-12-04 |
CN105611262B (zh) | 2018-05-15 |
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