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    • 3. 再颁专利
    • Optical fiber probe for position measurement
    • 用于位置测量的光纤探头
    • USRE39102E1
    • 2006-05-23
    • US09640794
    • 2000-08-18
    • Waldean A. SchulzIvan FaulRonald M. PasquiniDaniel J. Harrison
    • Waldean A. SchulzIvan FaulRonald M. PasquiniDaniel J. Harrison
    • G01B11/26A61B19/00
    • G01B11/002A61B90/36G01S1/70G01S5/16
    • Improved point source electromagnetic radiation emitters including a dispersing element that radiates electromagnetic radiation over a vary wide conical angle of approaching about 180°. This light dispersing element can be in any one or more of several illustrated forms such as a light diffusing spherical or hemispherical element, a planar diffusing plate, a tapered light guide, a piano-concave lens, a convex mirror, a light pipe with a large numerical aperture, or the like. The emitter of this invention may be fixed to an object and tracked in a 3-dimensional volume by a system using electro-optical position sensors in order to determine the spatial location of the emitters and therefore to determine, by geometry, the position or orientation of the object. The electromagnetic radiation generator is preferably disposed remote from the emitter and is electrically and magnetically isolated from the emitter. A common optical fiber provides transmission of the radiation from the generator to the emitter. The emitted radiation more nearly resembles point source of radiation and therefore enables more accurate determination of the location of the radiating element, and thereby more accurate determination of the position and orientation of the object on which the emitters reside. The preferred electromagnetic radiation generator is an LED, most preferably a laser diode.
    • 改进的点源电磁辐射发射器包括分散元件,其在接近约180°的变化的宽锥角上辐射电磁辐射。 该光分散元件可以是几种所示形式的任何一种或多种,​​例如光漫射球形或半球形元件,平面扩散板,锥形光导,钢琴凹透镜,凸面镜,具有 大数值孔径等。 本发明的发射器可以通过使用电光位置传感器的系统固定在物体上并以三维体积跟踪,以便确定发射器的空间位置,并且因此通过几何形状确定位置或取向 的对象。 电磁辐射发生器优选地远离发射器设置并且与发射极电气和磁性隔离。 普通光纤提供从发生器到发射器的辐射传输。 发射的辐射更接近于类似于辐射源点,因此能够更准确地确定辐射元件的位置,从而更准确地确定放射器所在的物体的位置和方向。 优选的电磁辐射发生器是LED,最优选的是激光二极管。