PROJECTION TYPE IMAGE DISPLAY APPARATUS

• Main Authors: HASHI NAOKI, SHIBUE SHIGENORI, MACHIDA NAOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 08.12.2014
• Subjects: 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; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To control light sources in a case where there is a light source which lights abnormally.SOLUTION: A controller 30 performs lighting processing of successively lighting plural light sources 50. A sensor 14 detects outgoing light amounts being the amounts of light which outgo from the respective light sources 50. On the basis of the light amounts outgoing from the respective light sources 50 detected by the sensor 14, the controller 30 determines whether the light sources 50 include a light source which lights abnormally. When an abnormally lighting light source is included, the controller 30 performs processing for stopping current supply to the abnormally lighting light source. 【課題】点灯状態が異常である光源が存在する場合における光源の制御を行う。【解決手段】制御部３０は、複数の光源５０の各々を順次点灯させる点灯処理を行う。センサ１４は、複数の光源５０の各々から出射される光の量である出射光量を検出する。制御部３０は、センサ１４により検出される、各光源５０の出射光量に基づいて、複数の光源５０において点灯状態が異常である点灯異状光源が存在するか否かを判定する。制御部３０は、点灯異状光源が存在する場合、当該点灯異状光源への電流供給を停止するための処理を行う。【選択図】図５