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    • 52. 发明授权
    • Position sensing device having a single photosensing element and dual light source
    • 具有单个感光元件和双光源的位置感测装置
    • US06420723B2
    • 2002-07-16
    • US09929851
    • 2001-08-14
    • David D. Bohn
    • David D. Bohn
    • G01N2186
    • H04N1/0476H04N1/047H04N1/107H04N2201/047H04N2201/0471H04N2201/04729H04N2201/04734H04N2201/04737
    • A position sensing device having a single photosensing element is disclosed herein. The position sensing device determines the location of an object to which the position sensing device is attached relative to a surface. The position sensing device has a plurality of light paths that direct light from different area portions of the surface to the single photosensing element. Each area portion of the surface is associated with a light source wherein each light source may be activated individually. A processor illuminates these area portions individually. As the area portions are illuminated, the photosensing element creates image data representative of the image of the area portion being illuminated. The processor analyzes the image data and identifies distinct features in the area portions. As the object is moved relative to the surface, the locations of these distinct features relative to the photosensing element move. By measuring this movement, the processor is able to determine the velocity, direction of movement, and position of the object relative to the surface.
    • 本文公开了具有单个感光元件的位置传感装置。 位置检测装置确定位置感测装置相对于表面与其相对的物体的位置。 位置检测装置具有将光从表面的不同区域部分引导到单个感光元件的多个光路。 表面的每个区域部分与光源相关联,其中每个光源可以被单独激活。 处理器分别照亮这些区域部分。 当区域部分被照亮时,光敏元件产生表示被照亮的区域部分的图像的图像数据。 处理器分析图像数据并识别区域部分中的不同特征。 当物体相对于表面移动时,这些不同特征相对于感光元件的位置移动。 通过测量这种运动,处理器能够确定物体相对于表面的速度,运动方向和位置。
    • 53. 发明授权
    • Device for determining the position of an object relative to a surface
    • 用于确定物体相对于表面的位置的装置
    • US06229297B1
    • 2001-05-08
    • US09345188
    • 1999-06-30
    • David D. Bohn
    • David D. Bohn
    • G01P348
    • H04N1/047H04N2201/0471H04N2201/04712H04N2201/04734H04N2201/04737
    • A position sensing device is disclosed wherein the positioning sensing device may determine the velocity and position of an object relative to a surface as the object is moved relative to the surface. The positioning sensing device may comprise two depth measurement devices that are mounted to the object on an axis that is substantially parallel to the direction of movement between object and the surface. The depth measurement devices are spaced a predetermined distance from each other. The depth measurement devices measure the contours of the surface as the object is moved relative to the surface and may output data representative of the surface contour to a processor. Accordingly, the processor receives two data signals that are out of phase wherein the phase shift is proportional to the relative velocity between the object and the surface. The processor may then perform an analysis on the data signals to determine the velocity of the object relative to the surface. Likewise, the processor may also determine the displacement of the object relative to the surface during a time interval.
    • 公开了一种位置检测装置,其中当对象相对于表面移动时,定位感测装置可以确定物体相对于表面的速度和位置。 定位感测装置可以包括两个深度测量装置,其在基本上平行于物体和表面之间的运动方向的轴上安装到物体。 深度测量装置彼此隔开预定的距离。 当对象相对于表面移动时,深度测量装置测量表面的轮廓,并且可以将表示轮廓的数据输出到处理器。 因此,处理器接收两相数据信号,其中相移与物体和表面之间的相对速度成比例。 然后,处理器可以对数据信号执行分析,以确定对象相对于表面的速度。 类似地,处理器还可以在时间间隔期间确定对象相对于表面的位移。
    • 56. 发明授权
    • Sensor assembly providing gray scale and color for an optical image
scanner
    • 传感器组件为光学图像扫描仪提供灰度和颜色
    • US5773814A
    • 1998-06-30
    • US532378
    • 1995-09-22
    • Wayne G. PhillipsKenneth D. GennettenPaul M. HubelDavid D. Bohn
    • Wayne G. PhillipsKenneth D. GennettenPaul M. HubelDavid D. Bohn
    • H04N1/028H04N1/00H04N1/48H01J40/14H04N9/07
    • H04N1/486H04N1/00795
    • A sensor assembly and an optical image color scanner using the sensor assembly. The sensor assembly is of the type having three separate rows of optical sensors. Two of the three sensor rows have color filters and one is unfiltered (receptive to white light). For gray scale scanning, only the unfiltered (white) sensor row is used, thereby maximizing the speed of gray scale scanning. For color scanning, three color values are computed as a linear transformation of values from the two filtered and one unfiltered values. The linear transformation may be as simple as subtracting signals from the two filtered sensor rows from the signal from the unfiltered (white) sensor row. For color scanning, memory buffers are required for two of the three sensor output signals. For highest accuracy in color scanning, the exposure time for the white sensor row is reduced relative to the exposure time for the two filtered sensor rows. An optional white channel bandpass filter (passing all wavelengths within the human visual range and rejecting wavelengths outside the human visual range) provides improved accuracy if the light source has significant wavelengths outside the human visual range.
    • 传感器组件和使用传感器组件的光学图像彩色扫描仪。 传感器组件是具有三个独立行的光学传感器的类型。 三个传感器行中的两个具有滤色器,一个未过滤(接受白光)。 对于灰度扫描,仅使用未滤波(白色)传感器行,从而最大化灰度扫描的速度。 对于彩色扫描,三个颜色值被计算为来自两个滤波值和一个未滤波值的值的线性变换。 线性变换可以像从未滤波(白色)传感器行的信号中减去来自两个滤波的传感器行的信号一样简单。 对于彩色扫描,三个传感器输出信号中的两个需要存储器缓冲器。 为了获得最高的彩色扫描精度,白色传感器行的曝光时间相对于两个经滤波的传感器行的曝光时间减少。 如果光源在人类视觉范围之外具有显着的波长,则可选的白色通道带通滤波器(通过人类视觉范围内的所有波长并排除人类视觉范围之外的波长)提供了更高的精度。
    • 58. 发明授权
    • Folded imaging path camera
    • 折叠成像路径相机
    • US09172856B2
    • 2015-10-27
    • US13074521
    • 2011-03-29
    • David D. BohnFrank Preiss
    • David D. BohnFrank Preiss
    • H04N5/225
    • H04N5/23287H04N5/2254H04N5/2257H04N5/23232H04N5/23264
    • In embodiments of a folded imaging path camera, a device includes a camera lens module that focuses an image, which is received as reflected light. An image sensor captures the image from the reflected light that is directed at the image sensor. The device also includes one or more optics that fold the reflected light of the image along an imaging path directed through the camera lens module and directed at the image sensor. The imaging path directed through the camera lens module can be approximately perpendicular to an axis along which the reflected light of the image is received via an aperture in the device. Alternatively, the imaging path directed through the camera lens module is approximately parallel to the axis along which the reflected light of the image is received via the aperture in the device.
    • 在折叠成像路径照相机的实施例中,设备包括相机镜头模块,其对作为反射光接收的图像进行聚焦。 图像传感器从指向图像传感器的反射光捕获图像。 该装置还包括一个或多个光学器件,其沿着穿过照相机镜头模块的成像路径折叠图像的反射光并且指向图像传感器。 引导通过摄像机镜头模块的成像路径可以大致垂直于沿着该图像的反射光经由设备中的孔接收的轴。 或者,引导通过照相机镜头模块的成像路径大致平行于沿着装置中的孔接收图像的反射光的轴。