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1. 发明公开

EP3407131A1 PROJECTOR 审中-公开
公开(公告)号：EP3407131A1
公开(公告)日：2018-11-28
申请号：EP17741284.8
申请日：2017-01-12
申请人： Seiko Epson Corporation
发明人： YANASE Shigehiro
IPC分类号： G03B21/14 , G03B21/00 , G09G3/20 , G09G3/34 , H04N5/74
CPC分类号： G03B21/00 , G03B21/14 , G09G3/20 , G09G3/34 , H04N5/74
摘要： In a case where rotational frequency detection and light source turn-on control are performed on an illuminator basis, and when a rotation mechanism in one of the illuminators malfunctions and the light source is therefore caused to stop operating, but when the light source in the other illuminator keeps emitting light, a projected image differs from an original image, undesirably resulting in decrease in reliability of the projector.
A projector includes a first rotation mechanism that rotates a first optical element that affects light from a light source section, a first detector that detects a first rotational frequency of the first rotation mechanism, a second rotation mechanism that rotates a second optical element that affects the light from the light source section, a second detector that detects a second rotational frequency of the second rotation mechanism, a light modulator, a projection optical apparatus, and a control section. The control section causes the light source section to stop emitting the light in a case where at least one of the first rotational frequency and the second rotational frequency detected by the first detector and the second detector decreases to a value smaller than or equal to a non-zero threshold corresponding to the rotational frequency.

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