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公开(公告)号：US20150002829A1
公开(公告)日：2015-01-01
申请号：US14377302
申请日：2012-02-09
申请人： Koji Hirata , Miyuki Ikeda , Tatsuya Ishikawa , Hiroyuki Shinji
发明人： Koji Hirata , Miyuki Ikeda , Tatsuya Ishikawa , Hiroyuki Shinji
CPC分类号： G03B21/54 , G03B21/14 , G03B21/145
摘要： Provided is a projection-type image display device which by means of a projection lens (2) magnifies and projects an optical image formed by a light source and an image display element, wherein an error indicator (5) for indicating anomalies in the device is disposed on the rear surface opposite the front surface of a device housing (1) to which the projection lens (2) is attached. The projection-type image display device further includes an AC voltage monitor unit (12) for monitoring voltage waveforms supplied form an external power source and retaining voltage waveform data during the latest prescribed period in a memory, and reads out the voltage waveform data from the external power source retained in the memory and displays the voltage waveform data on the error indicator (5) as said anomalies.
摘要翻译： 提供一种通过投影透镜（2）放大并投影由光源形成的光学图像和图像显示元件的投影型图像显示装置，其中，用于指示装置中的异常的误差指示器（5） 设置在与投影透镜（2）所附接的装置壳体（1）的前表面相对的后表面上。 投影型图像显示装置还包括用于监视从外部电源提供的电压波形并将最近规定期间内的电压波形数据保存在存储器中的AC电压监视器单元（12），并从 外部电源保留在存储器中，并将错误指示器（5）上的电压波形数据显示为所述异常。
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公开(公告)号：US10191363B2
公开(公告)日：2019-01-29
申请号：US14377302
申请日：2012-02-09
申请人： Koji Hirata , Miyuki Ikeda , Tatsuya Ishikawa , Hiroyuki Shinji
发明人： Koji Hirata , Miyuki Ikeda , Tatsuya Ishikawa , Hiroyuki Shinji
摘要： Provided is a projection-type image display device which by means of a projection lens (2) magnifies and projects an optical image formed by a light source and an image display element, wherein an error indicator (5) for indicating anomalies in the device is disposed on the rear surface opposite the front surface of a device housing (1) to which the projection lens (2) is attached. The projection-type image display device further includes an AC voltage monitor unit (12) for monitoring voltage waveforms supplied form an external power source and retaining voltage waveform data during the latest prescribed period in a memory, and reads out the voltage waveform data from the external power source retained in the memory and displays the voltage waveform data on the error indicator (5) as said anomalies.
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