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    • 3. 发明申请
    • OPTICAL GAGE AND THREE-DIMENSIONAL SURFACE PROFILE MEASUREMENT METHOD
    • 光栅和三维表面轮廓测量方法
    • WO2010107434A1
    • 2010-09-23
    • PCT/US2009/037602
    • 2009-03-19
    • GENERAL ELECTRIC COMPANYSONG, GuijuHARDING, Kevin, GeorgeJIA, MingYANG, BoHU, QingyingZHENG, JianmingTAO, Li
    • SONG, GuijuHARDING, Kevin, GeorgeJIA, MingYANG, BoHU, QingyingZHENG, JianmingTAO, Li
    • G01B11/25
    • G01B11/2527
    • An optical gage (10) with a small field of view for three-dimensional surface profile measurement includes a projector (20) having a light source (22) and projection optics (28, 30, 42) that guide light along a projection light path. An optical grating device (34) is arranged in the projection light path and modifies the projection light distribution to project a structured light pattern (46). A phase shifting apparatus (47) shifts the structured light pattern to at least three positions with desired phase shift on said surface (80) to be measured. A viewer (50) includes viewing optics with a viewing light path that is non-parallel to the projection light path, a light sensing array (58) for sensing images of diffuse reflections of the structured light patterns from said surface, and a camera (57) for recording the images. The optical gage further includes a computer (61) which comprises data input communication with the camera and a processor for modeling the surface being profiled based on surface contour information provided by the images.
    • 具有用于三维表面轮廓测量的小视野的光学计(10)包括具有光源(22)和投影光学器件(28,30,42)的投影仪(20),其沿着投影光路 。 光栅装置(34)布置在投影光路中,并且修改投影光分布以投影结构光图案(46)。 相移装置(47)将结构化光图案移动到要测量的所述表面(80)上具有期望相移的至少三个位置。 观察器(50)包括具有不平行于投影光路的观察光路的观察光学器件,用于感测来自所述表面的结构化光图案的漫反射的图像的光感测阵列(58)和相机 57)用于记录图像。 光学计量器还包括计算机(61),其包括与相机的数据输入通信,以及处理器,用于基于由图像提供的表面轮廓信息来对正在被轮廓化的表面进行建模。