公开(公告)号：EP0378575B1

公开(公告)日：1994-05-25

申请号：EP88908561.9

申请日：1988-08-26

Applicant: ROSEMOUNT INC.

Inventor： O'BRIEN, Richard, J. ,  MYHRE, Douglas, C.

IPC: G01J05/08

CPC classification number: G01J5/0088 ,  G01J5/02 ,  G01J5/029 ,  G01J5/041 ,  G01J5/08 ,  G01J5/0806 ,  G01J5/0818 ,  G01J5/0893 ,  G02B27/0006 ,  G03F7/70933

Abstract: A purging air flow system for passing air over a lens to keep it clean and free from particulate contaminants and also for providing a positive flow of air away from the lens has baffles which cause a flow across the lens that is not symmetrical to avoid a dead air or stagnation zone in the center of the lens. The air supply used for such purging is controlled adequately so the flow changes direction and particles are removed from the main flow of purge air by inertial separation prior to the time the air contacts the lens. Such air entrained particles might otherwise deposit on the lens. A flow control orifice also may provide a secondary flow to carry the particles separated from the main flow out of the flow passageway.

公开(公告)号：EP0150384A3

公开(公告)日：1988-01-27

申请号：EP84115241

申请日：1984-12-14

Applicant: International Business Machines Corporation

Inventor： Baumann, Thomas ,  Dacol, Frank Hubert ,  Melcher, Robert Lee

IPC: G01N25/00 ,  G01N21/17 ,  G01N23/225 ,  G01J05/08

CPC classification number: G01N25/72 ,  G01N23/22 ,  G01N2223/07 ,  G01N2223/073 ,  G01N2223/102 ,  G01N2223/306 ,  G01N2223/3302 ,  G01N2223/348 ,  G01N2223/40 ,  G01N2223/401 ,  G01N2223/418 ,  G01N2223/427 ,  G01N2223/509 ,  G01N2223/629 ,  G01N2223/651

Abstract: An electron energy beam (28) discontinuously scans a sample (32) and at each scan position produces a thermal wave in the sample, there being infrared radiation emitted from the thermal wave. All of the infrared radiation emitted from the heated areas of the sample is collected by an ellipsoidal collector (34) and directed by reflection to an infrared detector (44), the sample and detector being at the foci of the collector (34), to give a two-dimensional image of the sample. A computer system (52) is used to control data acquisition, storage, processing and image display, and also modulation and scanning of the beam (28). Surface, on the surface, and sub-surface structure of the sample can be detected, for example to reveal defects, or surface particles.

公开(公告)号：WO1998001730A1

公开(公告)日：1998-01-15

申请号：PCT/EP1997003531

申请日：1997-07-04

Applicant: LA TECNICA S.R.L. ,  BELLIFEMINE, Francesco ,  RUDI, Vincenzo

Inventor： LA TECNICA S.R.L.

IPC: G01J05/08

CPC classification number: G01J5/04 ,  G01J5/0275 ,  G01J5/049 ,  G01J5/08 ,  G01J5/089 ,  G01J5/0896

Abstract: A clinical thermometer is described, based on the measurement of the infrared radiation emitted by the patient, in which the body temperature of the patient is obtained in a non-invasive way and (normally) without any contact between the thermometer and the patient. During measurement of the temperature, the thermometer (1) is put at a preset distance (d) from the body of the patient, a distance which is normally determined by an optical aiming system consisting of two converging rays of light (5). A thermometer according to the invention may be used to obtain the temperature of the patient also by contact.

Abstract translation: 基于对患者发射的红外辐射的测量来描述体温计，其中以非侵入性方式获得患者的体温，并且（通常）在温度计和患者之间没有任何接触的情况下进行描述。 在温度测量期间，将温度计（1）放置在与患者身体预设的距离（d）处，该距离通常由由两个会聚的光线（5）组成的光学瞄准系统确定。 根据本发明的温度计也可以通过接触来获得患者的温度。

公开(公告)号：WO1996029584A1

公开(公告)日：1996-09-26

申请号：PCT/US1996003375

申请日：1996-03-12

Applicant: IRCON, INC.

Inventor： IRCON, INC. ,  IGNATOWICZ, Steven, A. ,  KALLEY, Eugene, F. ,  HAMPTON, Daniel, Scott ,  PARIS, Sam

IPC: G01J05/08

CPC classification number: G01J5/02 ,  G01J5/026 ,  G01J5/08 ,  G01J5/0806 ,  G01J5/0809 ,  G01J5/0821 ,  G01J5/0825 ,  G01J5/0834 ,  G01J5/0846 ,  G01J5/0859 ,  G01J5/0862

Abstract: A light detector is disclosed for measuring the temperature of anobject (10). The light detector includes a lens assembly (20) for accepting light emitted from the object, an aperture (30), and a mirror (40) for reflecting the infrared energy of the object into a fiber optic cable (76). The fiber optic cable is connected toa depolarizing element (80) to which pressure is externally applied. The depolarization element relays the infrared energy into a detection portion and a signal processing portion for calculation temperature. Before the infrared light enters the fiber optic cable, a chopper (100), controlled by a driving circuit (300), chops the infrared energy reflected by the mirror.

Abstract translation: 公开了一种用于测量物体（10）的温度的光检测器。 光检测器包括用于接收从物体发射的光的透镜组件（20），用于将物体的红外能量反射到光纤电缆（76）中的孔（30）和反射镜（40）。 光纤电缆连接到外部施加压力的去极化元件（80）。 去极化元件将红外能量中继到检测部分和用于计算温度的信号处理部分。 在红外光进入光纤电缆之前，由驱动电路（300）控制的斩光器（100）斩波由反射镜反射的红外能量。

公开(公告)号：EP0172594A3

公开(公告)日：1986-07-23

申请号：EP85201295

申请日：1985-08-09

Applicant: PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES LIMITED ,  N.V. Philips' Gloeilampenfabrieken

Inventor： Rose, Michael Andrew ,  Renals, Martin

IPC: G01J05/34 ,  G01J05/08

CPC classification number: G01J5/04 ,  G01J5/045 ,  G01J5/046 ,  G01J5/08 ,  G01J5/0806 ,  G01J5/0875 ,  G01J5/34 ,  Y10S250/01

Abstract: An infra-red radiation detector comprises a pyroelectric detector element (1) in an hermetically sealed housing (9,20). The housing comprises a base (9) and cover (20) with an aperture (10). A Fresnel lens (18) for example made of polyethylene transmissive in the 8-14µm wavelength range is fastened over the aperture on the inside of the cover for condensing the radiation to be detected onto the detector element. In one example the Fresnel lens is held fast against a flange (17) surrounding the aperture for example by a push-fit ring (21) see Figure 1). Alternatively the Fresnel lens is glued to a silicon window (25) which in turn is fastened to the flange (17) over the aperture (10) (see Figure 2). The Fresnel lens thus forms an integral part of the detector housing avoiding the need for external mirrors or lenses.

公开(公告)号：EP0132345A3

公开(公告)日：1986-03-12

申请号：EP84304715

申请日：1984-07-11

Applicant: MARCONI AVIONICS LIMITED

Inventor： Koetser, Adrian Harry

IPC: G01J05/08 ,  G02B05/00

CPC classification number: H04N5/33 ,  G01J5/06 ,  G05D23/1919

Abstract: The system relates to a telescope having optics and a scanning head which images a two-dimensional field of view point by point on to a localised thermal sensor. An aperture stop is mounted within the telescope housing and at least part of it is within the field of view of the sensor. The temperature of the stop is controlled by means of Peltier thermo-electric modules so that it corresponds to the average temperature of the external field of view. This prevents halation or blooming which would result from extreme temperature contrasts. The vignetting which occurs when the aperture stop is within the field of view gives an increased magnification for a given size of objective optics, and the benefits outweigh the corresponding reduction in thermal sensitivity.

公开(公告)号：EP0100399A3

公开(公告)日：1984-09-05

申请号：EP83103804

申请日：1983-04-20

Applicant: International Business Machines Corporation

Inventor： Selander, Raymond Kent

IPC: G01N21/55 ,  G01J05/08 ,  B25J13/00

CPC classification number: G01J5/08 ,  G01N21/55

Abstract: Automatic material identification is achieved using infrared thermometry. A focused beam (31) of high flux energy is passed through a dichroic beam-splitter (5) to remove visible light with the remaining infrared energy directed to the surface (7) of the material to be identified. An infrared thermometer sensor (15) is positioned to sense the magnitude of the energy reflected from the material surface (7) with the magnitude of the reflected energy being indicative of the type of material reflecting such energy. Control apparatus (17) is employed to provide control signals as a function of the type of material identified such that automatic process operations may be effected in accordance therewith.

公开(公告)号：WO1995027886A1

公开(公告)日：1995-10-19

申请号：PCT/US1995004035

申请日：1995-04-06

Applicant: LUXTRON CORPORATION

Inventor： LUXTRON CORPORATION ,  RALL, Dieter, L.

IPC: G01J05/08

CPC classification number: G01K13/06 ,  G01J5/0022 ,  G01J5/522

Abstract: A non-contact temperature measuring system comprising a dual-reference body structure (5) is used to measure the temperature of a moving object (15). The moving object (15) is passed by first (20) and second (30) reference bodies having a same form factor with respect to the object (15). Each of the reference bodies (20, 30) has a heat flow sensor (40, 50) embedded at the end of a cavity (43, 53) formed in the reference body (20, 30) such that the heat flow sensor (40, 50) primarily responds to radiation heat flow generated by a temperature differential between the object (15) and its respective reference body (40, 50). With the reference bodies (20, 30) thermally isolated and maintained at different temperatures by heaters (60, 90) embedded in the reference bodies (20, 30), and their respective heat flow sensors (40, 50) properly calibrated, the temperature of the object (15) is calculated by applying the Stefan-Boltzman law.

Abstract translation: 使用包括双参考体结构（5）的非接触式温度测量系统来测量移动物体（15）的温度。 运动物体（15）通过相对于物体（15）具有相同形状因数的第一（20）和第二（30）个参考体。 每个参考体（20,30）具有嵌入在形成于基准体（20,30）中的空腔（43,43）的端部的热流传感器（40,50），使得热流传感器（40,50） ，50）主要响应由物体（15）和其相应的参考体（40,50）之间的温度差产生的辐射热流。 通过嵌入在参考体（20,30）中的加热器（60,90）和它们各自的热流传感器（40,50）被适当地校准的参考体（20,30）被热隔离并保持在不同的温度，温度 通过应用Stefan-Boltzman定律来计算物体（15）。

公开(公告)号：WO1988004038A1

公开(公告)日：1988-06-02

申请号：PCT/US1987003037

申请日：1987-11-19

Applicant: FRADEN, Jacob

IPC: G01J05/08

CPC classification number: G01J5/0022 ,  G01J5/08 ,  G01J5/0806 ,  G01J5/089 ,  G01J2005/345 ,  G08B13/191 ,  G08B13/193 ,  Y10S250/01

Abstract: A miniature passive infrared motion detector contains an optical system, a pyroelectric polymer film and an electronic circuit. The optical system is made of a curved Fresnel lens (3) and an elongated wave guide having reflective inner surfaces (1, 4). This affords a very wide field of view by the optical system with the energy (9) of an intruder, for example, focused to a small point on the polymer film (8) which is also curved with the same radius as the lens (3) and has two interdigitized electrodes (6, 7) on the rear surface and one uniform electrode (33) on the front surface. The front electrode (33) is covered with infrared absorbent material. The electronic circuit contains a differential amplifier (14) and a threshold network (22).

公开(公告)号：WO1982000712A1

公开(公告)日：1982-03-04

申请号：PCT/SU1980000143

申请日：1980-08-22

Applicant: INST PROBLEM LITYA AKADEMII NAUK USSR ,  SHUMIKHIN V ,  CHUGUNNY E ,  ZHUKOV L

Inventor： INST PROBLEM LITYA AKADEMII NAUK USSR

IPC: G01J05/08

CPC classification number: G01J5/04 ,  G01J5/004 ,  G01J5/046 ,  G01J5/048 ,  G01J5/08 ,  G01J5/0818

Abstract: A light guiding unit comprises coaxially located light forming (1) and light transmitting (2) rods, made of a transparent refractory corrosion resistant material, for example, synthetic corundum. The length of the rod (1) is equal to the thickness t s of a metallized layer of a lining (4) whereas the length of the rod (2) is not less than the thickness t s of the other part of the lining (4). The rods (1) and (2) are connected to each other through a protecting bushing (7), made of a material which is plastic at the working temperature of the lining (4), and are placed inside a tube (3). The tube (3) is filled along the rod (1) with a refractory material (8) the sintering point of which is not higher than that of the lining (4) whereas its resistance against the action of the melt products is the same as that of the lining (4). At the working temperature of the lining (4) the material (8) has essentially the same linear expansion coefficient as that of the rods (1) and (2) and forms a viscous mass which is not alloyable with the rod (1). The silicon oxide powder may be used as the material (8). The tube (3) is eilled, along the rod (2) with a refractory material (9) the sintering point of which is above the working temperature of the lining (4) and than its sintering point, that refractory material being, in particular, the corundum powder.

Abstract translation: 导光单元包括由透明耐火材料（例如合成刚玉）制成的同轴位置的光成型（1）和透光（2）棒。 杆（1）的长度等于衬里（4）的金属化层的厚度t s，而杆（2）的长度不小于（2）的厚度t s， 衬里的其他部分（4）。 杆（1）和（2）通过保护衬套（7）彼此连接，保护衬套（7）由衬垫（4）的工作温度下为塑料的材料制成，并被放置在管（3）内。 管（3）沿着杆（1）填充有耐火材料（8），其烧结点不高于衬里（4）的耐火材料，而其对熔体产物的作用的抵抗力与 衬里（4）。 在衬里（4）的工作温度下，材料（8）具有与棒（1）和（2）的线膨胀系数基本相同的线性膨胀系数，并形成与棒（1）不合金的粘性质量。 氧化硅粉末可以用作材料（8）。 管（3）沿着杆（2）与耐火材料（9）一起被烧结，其耐火材料（9）的烧结点高于衬里（4）的工作温度，而不是其烧结点，特别是耐火材料 ，刚玉粉末。