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    • 4. 发明申请
    • RANGE DISCRIMINATING OPTICAL SENSOR
    • 范围分辨光学传感器
    • WO2005019770A1
    • 2005-03-03
    • PCT/US2004/026664
    • 2004-08-18
    • AUTOLIV ASP, INCDECKER, Stephen, W.DEMERSSEMAN, Bernard
    • DECKER, Stephen, W.DEMERSSEMAN, Bernard
    • G01C3/32
    • G01C3/32B60R21/0134G01S11/12
    • A range discriminating optical sensor for use in a vehicle safety system is provided. The range discriminating sensor is designed to create a small depth of field such that objects at a range outside of the depth of field are eliminated from the image. Generally, the optical sensor uses a large aperture to limit the depth of field. An electronic imaging element is used to detect the image projected by the lens. The electronic imaging element may have a small pixel size which further reduces the depth of field. A signal processor can be used to determine the distance from the image sensor with objects with the selected depth of field appearing in focus and those outside of the depth of field appearing out of focus.
    • 提供了一种用于车辆安全系统的范围识别光学传感器。 距离识别传感器被设计成产生小的景深,使得在景深外的范围内的物体从图像中消除。 通常,光学传感器使用大孔径来限制景深。 电子成像元件用于检测透镜投影的图像。 电子成像元件可以具有进一步减小景深的小像素尺寸。 可以使用信号处理器来确定与图像传感器的距离,其中所选择的景深对象的景物出现在焦点上,而景深外的物体出现焦点。