公开(公告)号：US07911591B2

公开(公告)日：2011-03-22

申请号：US11721862

申请日：2005-12-14

申请人： Derek Montgomery ,  Daryl G. James ,  David Yue Yan ,  Ivan Melnyk ,  Ondrej Mecl

发明人： Derek Montgomery ,  Daryl G. James ,  David Yue Yan ,  Ivan Melnyk ,  Ondrej Mecl

IPC分类号： G01B3/36

CPC分类号： G01P5/20

摘要： An L2F velocimeter comprises a probe for insertion into a fluid, the probe having an open area therein to allow the fluid to pass through. The probe comprises an illumination system to direct a pair of light beams, separated by a distance, through the open area, and a collection system to collect forward scattered light scattered from particles in the fluid. The collection system has an optical axis in common with the illumination system. The velocimeter further comprises an electro optical assembly connected to the probe to provide light to the illumination system, to receive light collected from the collection system, to measure a lapse time in fluctuations of the forward scattered light created by particles passing through the pair of light beams and to calculate the velocity of the fluid based on the lapse time and the separation distance.

摘要翻译： L2F速度计包括用于插入流体的探针，探针在其中具有开口区域以允许流体通过。 该探针包括一个照明系统，用于引导通过开放区域分开一定距离的一对光束，以及收集系统以收集从流体中的颗粒散射的向前散射的光。 收集系统具有与照明系统相同的光轴。 速度计还包括连接到探针的电光学组件以向照明系统提供光，以接收从收集系统收集的光，以测量由穿过该对光的粒子产生的向前散射光的波动中的经过时间 并根据经过时间和分离距离计算流体的速度。

公开(公告)号：US06667831B2

公开(公告)日：2003-12-23

申请号：US10093865

申请日：2002-03-07

申请人： Vladimir Draganov ,  Robert T. Carlson ,  Robert L Kehr ,  Derek G Montgomery ,  Pablo Bandera ,  Daryl G James

发明人： Vladimir Draganov ,  Robert T. Carlson ,  Robert L Kehr ,  Derek G Montgomery ,  Pablo Bandera ,  Daryl G James

IPC分类号： G02B2300

CPC分类号： G02B17/0631 ,  G02B17/061

摘要： A compact telescope having a modified Gregorian design comprising three reflecting surfaces. The first reflecting surface is concave and is defined by an outer perimeter and an inner perimeter. The curvature of the first reflecting surface defines a focal plane of the first reflecting surface. The second reflecting surface is optically coupled to the first reflecting surface and is disposed between the first reflecting surface and the focal plane defined by the first reflecting surface. The third reflecting surface is concave and is disposed within the inner perimeter of the first reflecting surface. The curvature of the third reflecting surface is greater than the curvature of the first reflecting surface. The third reflecting surface is optically coupled to the first reflecting surface by the second reflecting surface. An aperture is disposed within the third reflecting surface. Thus light incident upon the first reflecting surface is directed through the aperture.

摘要翻译： 具有改进的公历设计的紧凑望远镜包括三个反射表面。 第一反射表面是凹形的并且由外周边和内周限定。 第一反射面的曲率限定第一反射面的焦平面。 第二反射表面光耦合到第一反射表面并且设置在第一反射表面和由第一反射表面限定的焦平面之间。 第三反射面是凹形的并且设置在第一反射表面的内周边内。 第三反射面的曲率大于第一反射面的曲率。 第三反射表面通过第二反射表面光耦合到第一反射表面。 孔设置在第三反射面内。 因此入射在第一反射表面上的光被引导通过孔。

公开(公告)号：US20090323048A1

公开(公告)日：2009-12-31

申请号：US11721862

申请日：2005-12-14

申请人： Derek Montgomery ,  Daryl G. James ,  David Yue Yan ,  Ivan Melnyk ,  Ondrej Mecl

发明人： Derek Montgomery ,  Daryl G. James ,  David Yue Yan ,  Ivan Melnyk ,  Ondrej Mecl

IPC分类号： G01P5/26 ,  G01P5/20

CPC分类号： G01P5/20

摘要： An L2F velocimeter comprises a probe for insertion into a fluid, the probe having an open area therein to allow the fluid to pass through. The probe comprises an illumination system to direct a pair of light beams, separated by a distance, through the open area, and a collection system to collect forward scattered light scattered from particles in the fluid. The collection system has an optical axis in common with the illumination system. The velocimeter further comprises an electro optical assembly connected to the probe to provide light to the illumination system, to receive light collected from the collection system, to measure a lapse time in fluctuations of the forward scattered light created by particles passing through the pair of light beams and to calculate the velocity of the fluid based on the lapse time and the separation distance.

摘要翻译： L2F速度计包括用于插入流体的探针，探针在其中具有开口区域以允许流体通过。 该探针包括一个照明系统，用于引导通过开放区域分开一定距离的一对光束，以及收集系统以收集从流体中的颗粒散射的向前散射的光。 收集系统具有与照明系统相同的光轴。 速度计还包括连接到探针的电光学组件以向照明系统提供光，以接收从收集系统收集的光，以测量由穿过该对光的粒子产生的向前散射光的波动中的经过时间 并根据经过时间和分离距离计算流体的速度。