ABNORMALITY DETECTION DEVICE, PROJECTION DEVICE, ABNORMALITY DETECTION METHOD AND PROGRAM

To provide an abnormality detection device, a projection device, an abnormality detection method and a program for detecting an abnormality of a light source with a low load.SOLUTION: A light source device 60 comprises a light source part and a detection part. The light source part emits light for e...

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Bibliographische Detailangaben
Hauptverfasser:	KATO KOICHI, INOUE SEI, MAKINO TOMOYA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	To provide an abnormality detection device, a projection device, an abnormality detection method and a program for detecting an abnormality of a light source with a low load.SOLUTION: A light source device 60 comprises a light source part and a detection part. The light source part emits light for each segment period P11-P13 time-divided within a frame F1. The detection part acquires an illuminance value V2 of the maximum illuminance light emitted to the inside of the frame F1 after the lapse of predetermined delay time TD from timing T13 of receiving a trigger signal (timing signal a1) synchronized with the frame F1 and, if the acquired illuminance value V2 of the maximum illuminance light is less than a predetermined threshold Vref, determines that the light source part has an abnormality.SELECTED DRAWING: Figure 7 【課題】低い負荷で光源の異常を検出する異常検出装置、投影装置、異常検出方法及びプログラムを提供すること。【解決手段】光源装置６０は、光源部と検出部とを備える。光源部は、フレームＦ１内で時分割されたセグメント期間Ｐ１１〜Ｐ１３毎に光を出射する。検出部は、フレームＦ１と同期したトリガー信号（タイミング信号ａ１）の受信のタイミングＴ１３から、予め定めた遅延時間ＴＤ経過後に、フレームＦ１内に出射される最大照度光の照度値Ｖ２を取得し、取得した最大照度光の照度値Ｖ２が予め定めた閾値Ｖｒｅｆ未満である場合に光源部が異常と判定する。【選択図】図７