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    • 8. 发明授权
    • Method and apparatus of determining the true edge length of a body
    • 确定身体真实边缘长度的方法和装置
    • US4601581A
    • 1986-07-22
    • US719730
    • 1985-04-04
    • Robert L. CoveyMichael T. GaleIstvan GorogJohn P. Beltz
    • Robert L. CoveyMichael T. GaleIstvan GorogJohn P. Beltz
    • G01B11/02G01B11/14
    • G01B11/024
    • A method and apparatus for determining the true edge length of a body subtended by two other body edges comprises exposing the body to a beam of light such that the edge is imaged by an optical system for projecting a linear section across the body as a silhouette-like image onto a linear array of photosensitive detectors. The image is usually blurred due to diffraction effects. The body is initially positioned in focus and then scanned moving the array provide an image of at least a portion of the desired edge to define a reference line representing the location of the edge. The array is then moved in scanned sequence from that reference line to provide fifty percent (50%) intensity level data points to define the other body edges. Lines are fitted through such data points and extended to intersect the reference line to determine the true length of the edge even with a blurred image of portions of that edge.
    • 用于确定由两个其它身体边缘对向的身体的真实边缘长度的方法和装置包括将身体暴露于光束,使得边缘通过光学系统成像,用于将线性部分投影穿过身体, 像图像到光敏检测器的线性阵列上。 由于衍射效应,图像通常会模糊。 首先将身体定位在焦点上,然后扫描移动阵列提供期望边缘的至少一部分的图像以限定表示边缘的位置的参考线。 然后将阵列以扫描顺序从该参考线移动,以提供50%(50%)强度水平的数据点来定义其他身体边缘。 线通过这些数据点进行拟合,并延伸以与参考线相交,以便即使在该边缘的部分的模糊图像中也可确定边缘的真实长度。
    • 10. 发明授权
    • Apparatus for measuring parameters of light spots with a moving
knife-edge mask
    • 用移动的刀刃掩模测量光斑参数的装置
    • US4663524A
    • 1987-05-05
    • US823017
    • 1986-01-27
    • Michael T. GaleHeinrich Meier
    • Michael T. GaleHeinrich Meier
    • G01J1/42H01J3/14
    • G01J1/4257
    • A two-dimensional knife edge mask comprised of an array of spaced periodic rectangular opaque regions (e.g., a chrome grating pattern layer deposited on one surface of a slide) separated by transparent different given spacing stripes between adjacent rectangular regions in each of the two orthogonal dimensions thereof, is linearly moved at a fixed velocity across an incident light spot, the direction of movement being oblique to the orthogonal dimensions of the rectangular regions and the distance of movement being sufficient to traverse at least one entire spacing strips in each of the two orthogonal dimensions. A photocell (which may be secured to the other side of the slide) senses the occulted light.
    • 二维刀刃掩模由两个间隔的周期性矩形不透明区域(例如,沉积在载玻片的一个表面上的镀铬光栅图案层)阵列组成,在两个正交的每一个中的相邻矩形区域之间分开的透明不同的给定间隔条纹 其尺寸以穿过入射光点的固定速度线性移动,移动方向与矩形区域的正交尺寸倾斜,并且移动距离足以穿过两者中的每一个中的至少一个整个间隔条 正交尺寸。 光电管(其可以固定到幻灯片的另一侧)感测到隐蔽的光。