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    • 28. 发明申请
    • Projector
    • 投影机
    • US20050007562A1
    • 2005-01-13
    • US10816935
    • 2004-04-05
    • Hideya SekiMasatoshi YonekuboDaisuke UchikawaShunji KamijimaTakashi Takeda
    • Hideya SekiMasatoshi YonekuboDaisuke UchikawaShunji KamijimaTakashi Takeda
    • G02B26/10G02B27/18G03B21/00G03B21/28G09G3/02G09G3/20H01S3/00H01S3/101H04N3/08H04N5/74
    • H04N5/74G03B21/2086H04N3/08H04N9/3129
    • A projector with high safety is provided by directly shutting down the laser beam production when normal scanning of the laser beam is not carried out, thereby reducing exposure to the laser beam. For this purpose, the projector is provided with a laser beam source (10) that outputs a laser beam and modulates the laser beam in a beam form based on an image signal, a scanning unit (30) that scans the laser beam output by the laser beam source (10) at least in one-dimensional direction, a scan driving unit (50) that drive controls the scanning unit by a first force, a retaining unit (40) that stops and retains the scanning unit at a predetermined position by a second force, and a light shielding unit (70) that shields the laser beam from the scanning unit (30) that is retained by the retaining unit (40). The scan driving unit (50) releases the scanning unit (30) retained by the retaining unit (40), and drives it when the first force is larger than the second force. The retaining unit (40) stops and retains the scanning unit (30) at the predetermined position when the second force is larger than the first force.
    • 通过在不进行激光的正常扫描的情况下直接关闭激光束的产生,提供高安全性的投影仪,从而减少对激光束的曝光。 为此,投影仪设置有激光束源(10),其输出激光束并基于图像信号以波束形式对激光束进行调制;扫描单元(30),其扫描由所述激光束输出的激光束 至少在一维方向上的激光束源(10),通过第一力驱动扫描单元的扫描驱动单元(50),将扫描单元停止并保持在预定位置的保持单元(40) 第二力和遮光单元,其遮蔽来自由保持单元(40)保持的扫描单元(30)的激光束。 扫描驱动单元(50)释放由保持单元(40)保持的扫描单元(30),并且当第一力大于第二力时驱动它。 当第二力大于第一力时,保持单元(40)停止并将扫描单元(30)保持在预定位置。
    • 30. 发明授权
    • Imaging system
    • 成像系统
    • US5986810A
    • 1999-11-16
    • US120368
    • 1998-07-22
    • Duncan James Webb
    • Duncan James Webb
    • H04N3/08H04N5/33H04N5/372G02B27/10G02B27/64
    • H04N5/37206H04N3/08H04N3/1525H04N5/33
    • An imaging system is provided which comprises an objective lens arrangement, a linear array of detector elements within a detector the array comprising a row of time delay an integrate (TDI) channels and a scanning optic arranged to scan an image over the array detector elements, the system further comprises means for rotating the scanning optic about an axis (N) normal to an optical surface of the scan optic when the scan optic is in the center of its field of view position, the scan optic being rotated about this axis (N) in dependence on the rate at which the imaging system is panned across a scene, such that a received image is vector scanned across the linear array of detector elements to compensate for loss in image resolution due to the panning action of the imaging system occurring during the period in which an image frame is detected.
    • 提供了一种成像系统,其包括物镜布置,检测器内的检测器元件的线性阵列,该阵列包括时延延迟的行(TDI)通道和布置成扫描阵列检测器元件上的图像的扫描光学器件, 所述系统还包括用于当所述扫描光学器件位于其视场位置的中心时围绕垂直于所述扫描光学器件的光学表面的轴线(N)旋转所述扫描光学器件的装置,所述扫描光学器件围绕该轴线旋转(N ),这取决于成像系统在场景上平移的速率,使得接收的图像被跨越检测器元件的线性阵列向量扫描,以补偿由于成像系统期间发生的平移动作造成的图像分辨率损失 检测到图像帧的周期。