公开(公告)号：US4863226A

公开(公告)日：1989-09-05

申请号：US166226

申请日：1988-03-10

申请人： Pieter M. Houpt ,  Arie Draaijer

发明人： Pieter M. Houpt ,  Arie Draaijer

IPC分类号： G01N21/17 ,  G01N21/27 ,  G01N21/64 ,  G01Q20/02 ,  G01Q30/02 ,  G01Q90/00 ,  G02B21/00 ,  G02B26/10 ,  G02B27/00

CPC分类号： G02B21/0068 ,  G02B21/0032 ,  G02B21/0036 ,  G02B21/0048 ,  G02B21/0072 ,  G02B21/0076 ,  G02B21/0084

摘要： Confocal laser scanning microscope comprising a laser as point light source, a deflection system for the line and frame scanning and a lens system, at least one objective near the object, an object stage, a spatial filter and a detector, and an electronic control and imaging-processing system. The object is scanned point by point by the light beam and measurement is made with the detector only where the point light source is focused so that out-of-focus light is not detected. As a result resolution and contrast in three dimensions, in particular, axially to the image plane can be improved considerably, and 3D information can be derived from the object. For the more rapid line scanning, the deflection system of the present invention comprises an acousto-optical deflector and comprises for the slower frame scanning, another deflector constructed in a manner such that at least the frame-scanning movement of the return light beam is completely eliminated, as a result of which the return light is focused on the spatial filter.

公开(公告)号：US4711126A

公开(公告)日：1987-12-08

申请号：US838675

申请日：1986-03-12

申请人： Pieter M. Houpt ,  Ralph T. Wielandt

发明人： Pieter M. Houpt ,  Ralph T. Wielandt

IPC分类号： G01F23/292 ,  G01N21/43 ,  G01F23/28

CPC分类号： G01F23/292 ,  G01N21/431 ,  Y10S250/907

摘要： A sensor for the measurement of the refractive index of a fluid and/or phase boundary between two fluids comprises a light guide in the form of a rod; one end of the rod is connected to both a light source and a detection element and the other end of the rod is reflective. If the sensor is used in a refractive index gauge the measurement should be independent of the liquid level; if the sensor is used in a level gauge, a digital measurement should be possible. The coating is provided with one or more cut-outs consisting of windows which are in direct contact with the surrounding fluid.

摘要翻译： 用于测量两种流体之间的流体和/或相边界的折射率的传感器包括棒形式的光导; 杆的一端连接到光源和检测元件，并且杆的另一端是反射性的。 如果传感器用于折射率计，测量应与液位无关; 如果传感器用于液位计，则应进行数字测量。 该涂层设置有一个或多个由与周围流体直接接触的窗口组成的切口。

公开(公告)号：US5055699A

公开(公告)日：1991-10-08

申请号：US513781

申请日：1990-04-24

申请人： Johan W. Konig ,  Pieter M. Houpt

发明人： Johan W. Konig ,  Pieter M. Houpt

IPC分类号： G01N21/41 ,  G01N9/00 ,  G01N21/43 ,  H01M10/48

CPC分类号： G01N21/431 ,  Y10S250/903

摘要： In order to measure the refractive index of a fluid use is made of a rod (1) which projects into the fluid and has a refractive index which is slightly larger than that of the fluid. At the end which is not immersed in the fluid, the rod is provided with a light source (3) radiating into the rod and with a light detector (5). That part of the rod which is to be immersed in the fluid is partially surrounded by a casing which permits only total reflection of the light, while at the site of the part or parts of the rod not surrounded by the casing refracted light can, depending on the refractive index of the fluid, leak into the fluid. A casing which is stable against the corrosive action of an aggressive fluid, such as concentrated sulphuric acid in a battery, consists, according to the invention, of a layer (10), trapped in a transparent tube (8), of a medium which has a lower refractive index than the said rod, in particular gas or vacuum. In order to nullify the interfering action of hydrogen gas bubbles adhering to the rod, at least that part of the rod, projecting into the fluid, which is not surrounded by the casing can project into a holder (12), which below the rod, is provided with openings (13), a line (14) for supplying gas under pressure opening into the upper part of the holder.

公开(公告)号：US4774417A

公开(公告)日：1988-09-27

申请号：US8295

申请日：1987-01-29

申请人： Pieter M. Houpt

发明人： Pieter M. Houpt

IPC分类号： G01N21/49 ,  G01N21/15 ,  G01N21/59 ,  G01N21/85 ,  G01N15/06

CPC分类号： G01N21/8507 ,  G01N2021/151 ,  G01N2021/1744

摘要： A device and method are provided for determining the amount of solid material dispersed in a liquid. The device and method allow for the passage of a beam of light into the liquid containing the dispersed solid through the meniscus of a gas-liquid interface window which is formed. The meniscus is periodically or continuously renewed by a flow of gas. The scattering or transmission of the light through the liquid is then detected and provides a measurement of the amount of solid material dispersed in the liquid.

摘要翻译： 提供了用于确定分散在液体中的固体材料的量的装置和方法。 该装置和方法允许光束通过形成的气 - 液界面窗口的弯液面进入含有分散固体的液体中。 弯液面被气流定期或连续地更新。 然后检测光通过液体的散射或透射，并提供分散在液体中的固体材料的量的测量。