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1. 发明授权

US08905553B2 Laser projector and method of detecting scanning angle range of laser beam thereof 有权
标题翻译：激光投影仪及其激光束扫描角度范围检测方法
公开(公告)号：US08905553B2
公开(公告)日：2014-12-09
申请号：US13746311
申请日：2013-01-22
申请人： Lite-On It Corporation
发明人： Chia-Tse Lin , Kai-Wen Cheng
IPC分类号： G03B21/20 , H04N9/31
CPC分类号： H04N9/3129 , G03B21/2033 , H04N9/3161 , H04N9/3191 , H04N9/3194
摘要： A method of detecting a scanning angle range of a laser beam of a laser projector is provided. First, a photo sensor is disposed between first and second positions on a projection mirror. Then, a laser beam emitted from the laser projector scans back and forth between the first and second positions, so that the photo sensor receives the laser beam sequentially at first and second scanning time points to generate first and second sensing signals, respectively. If an actual time interval between the first and second sensing signals conforms to an expected time interval, an actual scanning angle range of the laser beam is determined as normal. If the actual time interval does not conform to the expected time interval, the actual scanning angle range of the laser beam is determined as abnormal and the laser projector stops emitting the laser beam. A laser projector is also provided.
摘要翻译：提供一种检测激光投影仪的激光束的扫描角度范围的方法。首先，在投影镜上的第一和第二位置之间设置光传感器。然后，从激光投影仪发射的激光束在第一和第二位置之间来回扫描，使得光电传感器在第一和第二扫描时间点顺序地接收激光束，以分别产生第一和第二感测信号。如果第一和第二感测信号之间的实际时间间隔符合期望的时间间隔，则激光束的实际扫描角度范围被正常地确定。如果实际时间间隔不符合预期时间间隔，则激光束的实际扫描角度范围被确定为异常，并且激光投影仪停止发射激光束。还提供激光投影机。

2. 发明申请

US20140168619A1 LASER PROJECTOR AND METHOD OF DETECTING SCANNING ANGLE RANGE OF LASER BEAM THEREOF 有权
标题翻译：激光投影仪和检测其激光束扫描角范围的方法
公开(公告)号：US20140168619A1
公开(公告)日：2014-06-19
申请号：US13746311
申请日：2013-01-22
申请人： LITE-ON IT CORPORATION
发明人： Chia-Tse Lin , Kai-Wen Cheng
IPC分类号： G03B21/20
CPC分类号： H04N9/3129 , G03B21/2033 , H04N9/3161 , H04N9/3191 , H04N9/3194
摘要： A method of detecting a scanning angle range of a laser beam of a laser projector is provided. First, a photo sensor is disposed between first and second positions on a projection mirror. Then, a laser beam emitted from the laser projector scans back and forth between the first and second positions, so that the photo sensor receives the laser beam sequentially at first and second scanning time points to generate first and second sensing signals, respectively. If an actual time interval between the first and second sensing signals conforms to an expected time interval, an actual scanning angle range of the laser beam is determined as normal. If the actual time interval does not conform to the expected time interval, the actual scanning angle range of the laser beam is determined as abnormal and the laser projector stops emitting the laser beam. A laser projector is also provided.
摘要翻译：提供一种检测激光投影仪的激光束的扫描角度范围的方法。首先，在投影镜上的第一和第二位置之间设置光传感器。然后，从激光投影仪发射的激光束在第一和第二位置之间来回扫描，使得光电传感器在第一和第二扫描时间点顺序地接收激光束，以分别产生第一和第二感测信号。如果第一和第二感测信号之间的实际时间间隔符合期望的时间间隔，则激光束的实际扫描角度范围被正常地确定。如果实际时间间隔不符合预期时间间隔，则激光束的实际扫描角度范围被确定为异常，并且激光投影仪停止发射激光束。还提供激光投影机。

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