IMAGE PROJECTION DEVICE
To provide an image projection device comprising two light sources and two phosphors, capable of downsizing a light source module synthesizing fluorescent light obtained from the two phosphors to output the same.SOLUTION: An image projection device comprises: a light source; two phosphor wheels 102-...
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Sprache: | eng ; jpn |
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Zusammenfassung: | To provide an image projection device comprising two light sources and two phosphors, capable of downsizing a light source module synthesizing fluorescent light obtained from the two phosphors to output the same.SOLUTION: An image projection device comprises: a light source; two phosphor wheels 102-1, 102-2; a uniformizing element 103; an optical system guiding excitation light from the light source to the two phosphor wheels and guiding synthetic light obtained by synthesizing fluorescent light from the two phosphor wheels to the uniformizing element; an optical casing 110 tightly sealing the optical system; a first cooling casing 109-1 tightly sealing one of the two phosphor wheels and including a circulation path for air flow; and a second cooling casing 109-2 tightly sealing the other of the two phosphor wheels and including a circulation path for air flow. An axis of the circulation path of each of the first cooling casing and the second cooling casing perpendicularly intersects or is parallel to an optical axis of the synthetic light.SELECTED DRAWING: Figure 2
【課題】2つの光源と2つの蛍光体を備え、当該2つの蛍光体から得られる蛍光を合成して出力する光源モジュールを小型化することができる画像投射装置を提供する。【解決手段】光源と、2つの蛍光体ホイール102-1,102-2と、均一化素子103と、前記光源からの励起光を2つの前記蛍光体ホイールに導きかつ2つの前記蛍光体ホイールからの蛍光を合成した合成光を前記均一化素子まで導く光学系と、前記光学系を密閉する光学ケーシング110と、前記2つの蛍光体ホイールのうち一方を密閉しかつ気流の循環経路を有する第1冷却ケーシング109-1と、前記2つの蛍光体ホイールのうち他方を密閉しかつ気流の循環経路を有する第2冷却ケーシング109-2と、を有し、前記第1冷却ケーシングおよび前記第2冷却ケーシングのそれぞれの前記循環経路の軸が、前記合成光の光軸と垂直に交差するかまたは平行である。【選択図】図2 |
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