公开(公告)号：US09201165B2

公开(公告)日：2015-12-01

申请号：US14044884

申请日：2013-10-03

Applicant: LITE-ON IT CORPORATION

Inventor： Yu-Nan Tsai ,  Kai-Wen Cheng ,  Chia-Hao Hsu ,  Chun-Lai Hsiao

IPC: G01R27/26 ,  G02B1/00 ,  H03L1/00 ,  G01D5/24 ,  H01L21/00

CPC classification number: G02B1/00 ,  G01D5/24 ,  H01L21/00 ,  H03L1/00 ,  H03L2207/00

Abstract: A detection circuit is provided. A detection signal corresponding to an equivalent capacitance value of a micro-electro-mechanical system is generated by an oscillator, and the equivalent capacitance value of the micro-electro-mechanical system varies with a location of the micro-electro-mechanical system.

Abstract translation: 提供检测电路。 通过振荡器产生与微机电系统的等效电容值相对应的检测信号，微机电系统的等效电容值随着微机电系统的位置而变化。

公开(公告)号：US20150042365A1

公开(公告)日：2015-02-12

申请号：US14044884

申请日：2013-10-03

Applicant: LITE-ON IT CORPORATION

Inventor： Yu-Nan Tsai ,  Kai-Wen Cheng ,  Chia-Hao Hsu ,  Chun-Lai Hsiao

IPC: G01B7/00

CPC classification number: G02B1/00 ,  G01D5/24 ,  H01L21/00 ,  H03L1/00 ,  H03L2207/00

Abstract: A detection circuit is provided. A detection signal corresponding to an equivalent capacitance value of a micro-electro-mechanical system is generated by an oscillator, and the equivalent capacitance value of the micro-electro-mechanical system varies with a location of the micro-electro-mechanical system.

Abstract translation: 提供检测电路。 通过振荡器产生与微机电系统的等效电容值相对应的检测信号，微机电系统的等效电容值随着微机电系统的位置而变化。

公开(公告)号：US08905553B2

公开(公告)日：2014-12-09

申请号：US13746311

申请日：2013-01-22

Applicant: Lite-On It Corporation

Inventor： Chia-Tse Lin ,  Kai-Wen Cheng

IPC: G03B21/20 ,  H04N9/31

CPC classification number: H04N9/3129 ,  G03B21/2033 ,  H04N9/3161 ,  H04N9/3191 ,  H04N9/3194

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20140168619A1

公开(公告)日：2014-06-19

申请号：US13746311

申请日：2013-01-22

Applicant: LITE-ON IT CORPORATION

Inventor： Chia-Tse Lin ,  Kai-Wen Cheng

IPC: G03B21/20

CPC classification number: H04N9/3129 ,  G03B21/2033 ,  H04N9/3161 ,  H04N9/3191 ,  H04N9/3194

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20140001346A1

公开(公告)日：2014-01-02

申请号：US13677294

申请日：2012-11-14

Applicant: LITE-ON IT CORPORATION

Inventor： Chun-Hung Chen ,  Kai-Wen Cheng

IPC: G01J1/42

CPC classification number: G01J1/42 ,  G06F3/0423 ,  G06F3/0426

Abstract: A detection method of an image projection device is disclosed. A projection beam is projected on a plurality of projection regions within a projection range, wherein the projection beam carries different features when the projection beam is projected on different projection regions. A reflected beam from the projection range is received and converted to an electrical signal. The feature existing in the electrical signal is analyzed. The projection region corresponding to the feature is determined to identify which of the projection regions is/are blocked by an object.

Abstract translation: 公开了一种图像投影装置的检测方法。 投影光束投影在投影范围内的多个投影区域上，其中当投影光束投影在不同的投影区域上时，投影光束具有不同的特征。 来自投影范围的反射光束被接收并转换为电信号。 分析电信号中存在的特征。 确定与特征相对应的投影区域，以识别哪个投影区域被对象阻挡。