公开(公告)号：US5303029A

公开(公告)日：1994-04-12

申请号：US903383

申请日：1992-06-24

Applicant: Edward M. Sioma ,  James Litterio ,  Wen H. Chia

Inventor： Edward M. Sioma ,  James Litterio ,  Wen H. Chia

IPC: G01N15/06 ,  G01N15/00 ,  G01N21/47 ,  G01N21/53

CPC classification number: G01N21/53 ,  G01N2015/0096 ,  G01N2201/0642

Abstract: A tubular test chamber of square cross-section minimizes reflection of stray light from the interior surface of the test chamber onto the detector during measurement by an optical system which is based upon right angle light scattering by the dust particles of a test sample. A rotary solenoid is utilized to open a trap door through which a sample is dropped into the test chamber during energization so that the internal spring of the solenoid can be used to bias the door closed upon deenergization thereof. The electronic circuitry which supports the measurement process provides an output in the form of a single "characteristic number" for each sample measured and has a novel feedback circuit used in auto-zeroing of the device.

Abstract translation: 正方形横截面的管状试验室在通过基于由测试样品的灰尘颗粒的直角光散射的光学系统的测量期间，将来自测试室的内表面的杂散光的反射最小化到检测器上。 旋转螺线管用于打开收集门，在通电期间样品通过该收集门落入测试室中，使得螺线管的内部弹簧可用于在其通电时关闭门。 支持测量过程的电子电路为测量的每个样品提供单个“特征数”形式的输出，并具有用于器件自动归零的新型反馈电路。

公开(公告)号：US4750837A

公开(公告)日：1988-06-14

申请号：US850933

申请日：1986-04-11

Applicant: Charles R. Gifford ,  Achille M. Bigliardi

Inventor： Charles R. Gifford ,  Achille M. Bigliardi

IPC: G01N33/58 ,  G01N21/05 ,  G01N21/25 ,  G01N21/64 ,  G01N33/536

CPC classification number: G01N21/255 ,  G01N21/645 ,  G01N2021/6482 ,  G01N21/6428 ,  G01N2201/064 ,  G01N2201/0642 ,  G01N2201/0696 ,  G01N2201/0698 ,  G01N2201/082

Abstract: There is disclosed herein a reference system for a fluorometer designed to detect very low levels of materials tagged with fluorophores. There is also disclosed an optical system for use in such a system which improves the signal to noise ratio. The reference system utilizes pulsed arc light excitation which excitation pulses are directed onto a flow cell containing the fluorescent dye. Fluorescent light emitted from the dye is guided to a photomultiplier tube which converts it to electrical pulses. A portion of each excitation light pulse is guided by a light pipe onto a PIN diode light detector which converts these light signals to electrical pulses. A LED reference light source is pulsed to generate a plurality of reference light pulses one of which occurs between each excitation pulse. A portion of each of these pulses is guided to each of the two light detectors and two more series of electrical pulses are generated. A microprocessor then reads the four electrical pulses resulting from each pair of light pulses and performs a computation on the resulting numbers which indicates the relative concentration of the target concentration being assayed. The optical system makes the excitation light pulses and the emitted light pulses to minimize the amount of scattered excitation light that gets into the emitted light optical channel and to control the location and size of the image projected onto the photomultiplier tube to stabilize its output signal. The light pipe and an output lens spatially integrates the image of the excitation light mask and focusses this light on the PIN diode so that the dancing image of the arc does not wander off the face of the PIN diode and destabilize its output signal. The action of the flow cell fluid contents spatially intergrates the fluorescent light thereby helping to stabilize the output of the photomultiplier tube.

Abstract translation: 本文公开了一种用于检测用荧光团标记的非常低水平的材料的荧光计的参考系统。 还公开了一种用于这种提高信噪比的系统中的光学系统。 参考系统利用脉冲弧光激发，激发脉冲被引导到含有荧光染料的流动池上。 从染料发出的荧光被引导到光电倍增管，将其转换成电脉冲。 每个激发光脉冲的一部分由光管引导到PIN二极管光检测器上，PIN检测器将这些光信号转换成电脉冲。 LED参考光源被脉冲以产生多个参考光脉冲，其中一个发生在每个激励脉冲之间。 这些脉冲中的每一个的一部分被引导到两个光检测器中的每一个，并且产生两个更多的串联的电脉冲。 然后微处理器读取由每对光脉冲产生的四个电脉冲，并且对所得数字进行计算，这表明所测定的目标浓度的相对浓度。 光学系统使得激发光脉冲和发射的光脉冲最小化进入发射光通道的散射激发光的量并且控制投影到光电倍增管上的图像的位置和尺寸以稳定其输出信号。 光管和输出透镜在空间上对激发光掩模的图像进行空间积分，并将该光聚焦在PIN二极管上，使得电弧的跳舞图像不会从PIN二极管的表面漂移并使其输出信号失稳。 流动池流体内容物的作用在空间上整合荧光，从而有助于稳定光电倍增管的输出。

公开(公告)号：US4430646A

公开(公告)日：1984-02-07

申请号：US221524

申请日：1980-12-31

Applicant: Robert B. Enemark

Inventor： Robert B. Enemark

IPC: G01N21/53 ,  G08B17/10 ,  G08B17/107

CPC classification number: G01N21/53 ,  G01N2201/0642

Abstract: An optical smoke detector having a conical masking body located directly between a light source and a light receiver. The masking body is provided with a reflecting surface so that rays from the light source are diverted into a reaction zone to supplement direct rays from the light source to the zone. In one embodiment the reflecting surface is cuspidate while in another embodiment a second masking body is added which shadows the light receiver from viewing the base of the first masking body.

Abstract translation: 一种光学烟雾探测器，具有直接位于光源和光接收器之间的锥形掩蔽体。 掩模体设置有反射表面，使得来自光源的光线被转移到反应区域中，以补充从光源到区域的直接光线。 在一个实施例中，反射表面是尖锐的，而在另一个实施例中，添加了第二掩蔽体，阴影使光接收器观察第一掩蔽体的基部。

公开(公告)号：US4311387A

公开(公告)日：1982-01-19

申请号：US103788

申请日：1979-12-14

Applicant: Charles F. deMey ,  Eugene F. Young

Inventor： Charles F. deMey ,  Eugene F. Young

IPC: G01N21/01 ,  G01N21/03 ,  G01N21/05 ,  G01N21/64 ,  G01N30/74

CPC classification number: G01N21/03 ,  G01N21/01 ,  G01N21/645 ,  G01N2021/0367 ,  G01N2021/6469 ,  G01N2021/6482 ,  G01N21/05 ,  G01N2201/0642

Abstract: The present invention includes an apparatus for measuring radiation from a sample. The apparatus includes means for axially focusing radiation from an excitation monochromator at the sample. The present invention further includes a novel sample cell holder useful with the fluorescent radiation measuring apparatus.

Abstract translation: 本发明包括一种用于测量样品辐射的装置。 该装置包括用于在样品处轴向聚焦来自激发单色仪的辐射的装置。 本发明还包括可用于荧光辐射测量装置的新型样品池保持器。

公开(公告)号：US12066381B2

公开(公告)日：2024-08-20

申请号：US17404825

申请日：2021-08-17

Applicant: CLAAS Selbstfahrende Erntemaschinen GmbH

Inventor： Frédéric Fischer ,  Johann Witte ,  Ralf Marbach

IPC: G01N21/359 ,  A01D41/12 ,  A01D41/127 ,  G01N21/33 ,  G01N21/31 ,  G01N21/85

CPC classification number: G01N21/359 ,  A01D41/1208 ,  A01D41/127 ,  G01N21/33 ,  G01N2021/3155 ,  G01N2021/8592 ,  G01N2201/0642 ,  G01N2201/065

Abstract: An optical measuring device for the spectral measurement of a sample is disclosed. The optical measure device includes an integrating cavity that has a diffusely reflective interior in order to render the light in the integrating cavity diffuse, a light source that is configured to emit light of a predetermined wavelength range into the integrating cavity, and a sensor that is configured to receive light from the integrating cavity, wherein the integrating cavity comprises an optical opening, and wherein the optical measuring device is provided and configured to measure a sample located outside of the integrating cavity directly in front of the optical opening.

公开(公告)号：US11719637B2

公开(公告)日：2023-08-08

申请号：US17405379

申请日：2021-08-18

Applicant: ILLUMINA, INC.

Inventor： Cheng Frank Zhong ,  Hod Finkelstein ,  Boyan Boyanov ,  Dietrich Dehlinger ,  Darren Segale

IPC: H01L27/146 ,  H01L27/00 ,  G01N27/414 ,  B01L3/00 ,  G01N33/543 ,  G01N21/64 ,  H01L27/088 ,  H01L29/78 ,  G01N21/05 ,  C12Q1/6874

CPC classification number: G01N21/645 ,  B01L3/502707 ,  B01L3/502715 ,  G01N21/6428 ,  G01N21/6454 ,  G01N27/4145 ,  G01N33/54373 ,  H01L27/00 ,  H01L27/088 ,  H01L27/14623 ,  C12Q1/6874 ,  G01N21/05 ,  G01N2021/6441 ,  G01N2021/6482 ,  G01N2201/061 ,  G01N2201/0642

Abstract: Biosensor including a device base having a sensor array of light sensors and a guide array of light guides. The light guides have input regions that are configured to receive excitation light and light emissions generated by biological or chemical substances. The light guides extend into the device base toward corresponding light sensors and have a filter material. The device base includes device circuitry electrically coupled to the light sensors and configured to transmit data signals. A passivation layer extends over the device base and forms an array of reaction recesses above the light guides. The biosensor also includes peripheral crosstalk shields that at least partially surround corresponding light guides of the guide array to reduce optical crosstalk between adjacent light sensors.

公开(公告)号：US20190204225A1

公开(公告)日：2019-07-04

申请号：US16295973

申请日：2019-03-07

Applicant: Illumina, Inc.

Inventor： Cheng Frank Zhong ,  Hod Finkelstein ,  Boyan Boyanov ,  Dietrich Dehlinger ,  Darren Segale

IPC: G01N21/64 ,  B01L3/00 ,  G01N33/543

CPC classification number: G01N21/645 ,  B01L3/502707 ,  B01L3/502715 ,  G01N21/05 ,  G01N21/6428 ,  G01N21/6454 ,  G01N33/54373 ,  G01N2021/6441 ,  G01N2021/6482 ,  G01N2201/061 ,  G01N2201/0642

Abstract: Biosensor including a device base having a sensor array of light sensors and a guide array of light guides. The light guides have input regions that are configured to receive excitation light and light emissions generated by biological or chemical substances. The light guides extend into the device base toward corresponding light sensors and have a filter material. The device base includes device circuitry electrically coupled to the light sensors and configured to transmit data signals. A passivation layer extends over the device base and forms an array of reaction recesses above the light guides. The biosensor also includes peripheral crosstalk shields that at least partially surround corresponding light guides of the guide array to reduce optical crosstalk between adjacent light sensors.

公开(公告)号：US20180199781A1

公开(公告)日：2018-07-19

申请号：US15743389

申请日：2016-07-04

Applicant: Vorwerk & Co. Interholding GmbH

Inventor： Lorenz HILLEN ,  Mara BRANDT

IPC: A47L9/28 ,  A47L11/40 ,  G01N21/47 ,  G01N21/57

CPC classification number: A47L9/2826 ,  A47L9/2831 ,  A47L11/4011 ,  A47L2201/04 ,  A47L2201/06 ,  G01N21/4738 ,  G01N21/57 ,  G01N2201/0642

Abstract: A device for treating a surface, in particular to a cleaning robot, has a detection device for identifying the type of surface, which detection device has a light source for irradiating the surface with light and has a sensor for detecting the light which is reflected by the surface. In order to improve the identification of the type of surface, it is proposed that a three-dimensional screen panel which forms a plurality of partial volumes is associated with the sensor, wherein each partial volume is in each case associated with a different sensor subarea of the sensor, and wherein adjacent sensor subareas are optically separated from one another by means of the screen panel such that light is prevented from passing from a first partial volume to a second partial volume. Furthermore, the invention relates to a method for operating a device for treating a surface.

公开(公告)号：US09995667B2

公开(公告)日：2018-06-12

申请号：US15135152

申请日：2016-04-21

Applicant: TZOA/Clad Innovations Ltd.

Inventor： Kevin R. Hart ,  Taylor Cooper ,  Vlad Lavrovsky ,  Div Gill ,  Justin Lam

IPC: G01N15/06 ,  G01N15/02 ,  G01N21/53 ,  G01N21/47 ,  G01N15/14

CPC classification number: G01N15/06 ,  G01N15/0205 ,  G01N15/1459 ,  G01N21/4785 ,  G01N21/53 ,  G01N2015/0693 ,  G01N2015/1486 ,  G01N2015/1493 ,  G01N2201/0221 ,  G01N2201/0612 ,  G01N2201/0642

Abstract: A portable ambient air quality monitor having an enclosure to enclose and protect the monitor from an ambient environment and an airflow intake for controllably allowing ambient air to enter the monitor. A photodiode is disposed at a location downstream from a fan. The airflow from the fan is laminarized by a mesh or baffle to allow a thin stream of air to flow over the photodiode. A sensing region is defined by an intersection of an airflow sampling path and an optical path. The sensing region is also disposed above the photodiode. The airflow sampling path is configured to receive laminar airflow from the airflow intake and for directing the laminar airflow into the sensing region. A light beam is generated from a laser to reflect the light beam for reducing the required area of the sensing region to detect and measure the particles floating in the ambient air.

公开(公告)号：US09976957B2

公开(公告)日：2018-05-22

申请号：US15336112

申请日：2016-10-27

Applicant: LG ELECTRONICS INC.

Inventor： Jihyun Kim ,  Bongjo Sung ,  Yeekyeong Jung ,  Sanggu Lee

IPC: G01N21/64 ,  F24F1/00 ,  F24F13/20 ,  G01N1/28 ,  G01N33/00 ,  B03C3/017 ,  F24F3/16 ,  G01N15/06 ,  G01N15/00 ,  G01N1/22 ,  G01N1/40 ,  G01N21/85

CPC classification number: G01N21/6428 ,  B03C3/017 ,  F24F1/0007 ,  F24F1/0025 ,  F24F3/16 ,  F24F11/30 ,  F24F11/52 ,  F24F13/20 ,  F24F2003/1667 ,  F24F2110/50 ,  G01N1/2273 ,  G01N1/28 ,  G01N15/0606 ,  G01N15/0656 ,  G01N21/6486 ,  G01N21/85 ,  G01N33/0036 ,  G01N2001/4038 ,  G01N2015/0046 ,  G01N2015/0065 ,  G01N2015/0693 ,  G01N2021/6482 ,  G01N2021/8578 ,  G01N2201/0642 ,  G01N2201/068 ,  Y02B30/78

Abstract: A device for measuring floating micro-organisms and an air conditioner including a device for measuring floating micro-organisms are provided. The device for measuring floating micro-organisms may include an air flow path through which air including floating micro-organisms may flow, a first main body provided at a first side of the air flow path and having a first space and a second space, a second main body provided at a second side of the air flow path and in which a collecting portion to collect the floating micro-organisms may be provided, a light emitter provided in the first space that emits a predetermined wavelength range of light toward the collecting portion, and a light receiver provided in the second space that detects a fluorescence signal generated from light which acts on riboflavin contained in the floating micro-organisms.