Solid cryogenic optical filter
    32.
    发明授权
    Solid cryogenic optical filter 有权
    固体低温滤光片

    公开(公告)号:US06444984B1

    公开(公告)日:2002-09-03

    申请号:US09637383

    申请日:2000-08-11

    CPC classification number: G01J5/061

    Abstract: An optical filter system is described wherein a fluid, such as gaseous phases of water or carbon dioxide, is frozen onto a transmissive substrate positioned in the optical path of an infrared sensor system. The frozen material, which is preferably maintained at cryogenic temperatures, acts as a natural optical filter, absorbing certain undesirable wavelength bands of atmospheric infrared radiation, thus preventing them from reaching the detector of the sensor system. Simultaneously, the optical filter system allows certain desirable wavelength bands of infrared radiation to be transmitted, thus permitting them to reach the detector of the sensor system. The overall effect is to reduce the amount of noise and clutter generated by the undesirable atmospheric infrared radiation from reaching the detector of the sensor system, thus increasing the resolution and effectiveness of the sensor system.

    Abstract translation: 描述了一种滤光器系统,其中诸如水或二氧化碳的气相的流体被冻结在位于红外传感器系统的光路中的透射基板上。 优选保持在低温下的冷冻材料充当天然的光学过滤器,吸收大量红外辐射的某些不期望的波长带,从而防止它们到达传感器系统的检测器。 同时,光学滤波器系统允许传输某些期望的红外辐射波段,从而允许它们到达传感器系统的检测器。 总体效果是减少由不期望的大气红外辐射到达传感器系统的检测器产生的噪声和杂波的数量,从而提高传感器系统的分辨率和有效性。

    Infrared ear thermometer
    33.
    发明授权
    Infrared ear thermometer 有权
    红外线耳温度计

    公开(公告)号:US06435711B1

    公开(公告)日:2002-08-20

    申请号:US09395797

    申请日:1999-09-14

    Inventor: Jonathan Gerlitz

    Abstract: An infrared ear thermometer includes a detector head housing, a heat sink, a recess formed in the heat sink, a thermopile sensor mounted within the recess, a thermistor, and temperature determination circuitry. The recess defines an aperture that limits the field of view of the thermopile sensor. The thermal capacities and conductivities of the heat sink and the thermopile sensor are selected so that the output signal of the thermopile sensor stabilizes during a temperature measurement. A method of determining temperature using the ear thermometer takes successive measurements, stores the measurements in a moving time window, averages the measurements in the moving window, determines whether the average has stabilized, and outputs an average temperature. A method of calculating a subject's temperature determines the temperature of a cold junction of the thermopile, looks up a bias and slope of the thermopile based upon the temperature of the cold junction, measures the output of the thermopile, and calculates the subject's temperature based upon a linear relationship between the output and the subject's temperature. The linear relationship is defined by the bias and the slope.

    Abstract translation: 红外耳温度计包括检测器头壳体,散热器,形成在散热器中的凹部,安装在凹部内的热电堆传感器,热敏电阻和温度确定电路。 凹槽限定了限制热电堆传感器的视野的孔。 选择散热器和热电堆传感器的热容量和电导率,使得热电堆传感器的输出信号在温度测量期间稳定。 使用耳温度计测定温度的方法是连续的测量,将测量值存储在移动时间窗口中,对移动窗口中的测量进行平均,确定平均值是否稳定,并输出平均温度。 计算受试者温度的方法决定了热电堆的冷连接温度,根据冷连接点的温度查找热电堆的偏压和斜率,测量热电堆的输出,并根据 输出与被摄体温度之间的线性关系。 线性关系由偏差和斜率定义。

    Passive-type infrared detector with elongated detection areas
    34.
    发明授权
    Passive-type infrared detector with elongated detection areas 有权
    被动式红外探测器具有细长的检测区域

    公开(公告)号:US06414314B1

    公开(公告)日:2002-07-02

    申请号:US09491583

    申请日:2000-01-25

    Applicant: Hiroyuki Ikeda

    Inventor: Hiroyuki Ikeda

    CPC classification number: G08B13/193

    Abstract: A passive-type infrared detector 1 includes an infrared sensor 3, a pair of lens elements (optical elements) 4R and 4L, a pair of mirrors 5R and 5L and a casing 2. The lens elements 4R and 4L are used to define detection areas a+ and a− opposed substantially 180° to each other for the infrared sensor 3. The mirrors 5R and 5L are used to direct infrared rays of light from the detection areas towards the infrared sensor 3. When this passive-type infrared detector 1 is installed at a position intermediate of an alert region, a combination of the infrared sensor 3, one of the lens elements 4R and one of the mirrors 5R is effective to monitor a range from one end of the alert region to the intermediate position whereas a combination of the infrared sensor 3, the other of the lens elements 4L and the other of the mirrors 5L is effective to monitor a range from the opposite end of the alert region to the intermediate position. Therefore, one half of the alert region may be a detection distance. Consequently, the lens elements 4R and 4L can have a reduced focal length, allowing the passive-type infrared detector 1 of a reduced outer size to monitor the long alert region.

    Abstract translation: 无源红外线检测器1包括红外线传感器3,一对透镜元件(光学元件)4R和4L,一对反射镜5R和5L以及壳体2.透镜元件4R和4L用于限定检测区域 a +和a-相对的大致180°。反射镜5R和5L用于将来自检测区域的红外光线引导到红外传感器3.当安装该被动型红外检测器1时 在警报区域的中间位置处,红外传感器3,透镜元件4R中的一个和反射镜5R中的一个的组合有效地监视从警报区域的一端到中间位置的范围,而组合 红外传感器3,透镜元件4L中的另一个和反射镜5L中的另一个有效地监视从警报区域的相对端到中间位置的范围。 因此,警报区域的一半可以是检测距离。 因此,透镜元件4R和4L可以具有减小的焦距,允许减小的外部尺寸的被动式红外检测器1监视长警报区域。

    Optoelectric measuring device for monitoring combustion processes
    35.
    发明授权
    Optoelectric measuring device for monitoring combustion processes 失效
    用于监测燃烧过程的光电测量装置

    公开(公告)号:US06320184B1

    公开(公告)日:2001-11-20

    申请号:US09350280

    申请日:1999-07-09

    CPC classification number: F02D35/022 F02B77/08 G01M15/10

    Abstract: An optoelectronic measuring device for monitoring combustion processes in a combustion chamber of an internal combustion engine during operation is provided with optical sensors which are connected to an evaluation unit. The optical sensors may be located in a seal element bounding the combustion chamber. To obtain high measuring quality in a simple manner, the optical sensors each include a lens assembly having a focusing lens whose flat end opposite the combustion chamber is coincident with the focal plane of the focusing lens and is abutted by an end of at least one optical fiber.

    Abstract translation: 一种用于在操作期间监测内燃机的燃烧室中的燃烧过程的光电测量装置设置有连接到评估单元的光学传感器。 光学传感器可以位于限定燃烧室的密封元件中。 为了以简单的方式获得高测量质量,光学传感器各自包括具有聚焦透镜的透镜组件,其与燃烧室相对的平坦端与聚焦透镜的焦平面重合并且与至少一个光学器件 纤维。

    Infrared, multiple gas analyzer and methods for gas analysis

    公开(公告)号:US06313464B1

    公开(公告)日:2001-11-06

    申请号:US09639553

    申请日:2000-08-16

    CPC classification number: G01N21/3504

    Abstract: A portable, infrared, multiple gas analyzer for measuring the concentration of a plurality of infrared absorbent gases with a simple optical arrangement for transmitting an infrared beam along an optical path along with gas mixtures to be analyzed. Light transmitting tubes arranged in a U-like configuration transmit infrared energy and the gases applied thereto over a small path to an infrared detector from an infrared source and provide electrical analog output signals representative of the detected gases. The detector output signals are processed by D.C. processing circuits including an analog to digital converter and microprocessing circuits for providing digital, binary coded, output signals representative of the detected gas concentration of the infrared absorbent gases. The analyzer can be readily calibrated by applying a non-infrared absorbent gas to the gas analyzer to provide a maximum output signal level with the infrared beam on and the background level or dark level signal with the beam off. The gas mixture having the infrared absorbent gases to be measured are applied to the analyzer for measurement and the resulting analog signals are amplified under control of a microprocessor for determining whether or not a preselected signal level stored in the microprocessor memory is exceeded or not. If not, the gain of the amplifier is increased to compensate for the aging of the analyzer. An offset voltage is applied to the analog to digital converter under control of the microprocessor to the amplified gas signals for increasing the resolution of the converter output signals only during the time intervals the absorbent gases are being measured. The microprocessor is programmed to execute a program for calculating the detected concentration of the gases undergoing analysis based on the previously acquired and stored “zero” gas level, dark level and known gas factors to provide the desired digital, binary coded, gas concentration signal from the analyzer.

    Passive infrared detector
    37.
    发明授权
    Passive infrared detector 有权
    被动红外探测器

    公开(公告)号:US06239437B1

    公开(公告)日:2001-05-29

    申请号:US09360966

    申请日:1999-07-27

    Applicant: Stephen Barone

    Inventor: Stephen Barone

    CPC classification number: G08B13/193 Y10S250/01

    Abstract: A passive infrared detection system which has a wide angular field of view and a flat or nearly flat front surface. Input optical elements direct and/or focus incident peripheral infrared radiation onto one or more internal Fresnel lens arrays and/or a sensitive area of a detector, including radiation having incident angles of less than about 30°. Because of the absence of protruding elements improved performance and greater functionality can be obtained by employing larger or multiple infrared input windows and/or opto-electronic sections without degrading the aesthetic appearance of the unit.

    Abstract translation: 一种被动式红外线检测系统,其具有宽的视场和平坦或接近平坦的前表面。 输入光学元件将入射的外围红外辐射直接和/或聚焦到一个或多个内部菲涅尔透镜阵列和/或检测器的敏感区域,包括入射角小于约30°的辐射。 由于没有突出的元件,通过使用较大或多个红外输入窗口和/或光电子部件可以获得改进的性能和更大的功能性,而不会降低单元的美学外观。

    Passive infra-red intrusion sensor
    38.
    发明授权
    Passive infra-red intrusion sensor 失效
    被动红外入侵传感器

    公开(公告)号:US06211522B1

    公开(公告)日:2001-04-03

    申请号:US09109495

    申请日:1998-07-02

    CPC classification number: G02B3/08 G02B3/005 G02B3/06 G08B13/193 Y10S250/01

    Abstract: An improved infra-red lens array for use in a passive infra-red intrusion sensor, which maintains high detection capability for intruders moving in the middle and near field, and yet discriminates well between the movement of intruders and of pets in the near field. The upper part of the lens array is composed of at least one row containing convex lenses, operative to focus the far and middle field radiation of the area to be protected onto the detector of the sensor. The lower part of the array has at least one row containing cylindrical lenses, with their axes of symmetry aligned vertically, operative to focus infra-red radiation from the middle and near fields onto the detector. Each cylindrical lens focuses a vertical curtain of the protected area onto the infra-red detector. In order to ensure reduced sensor sensitivity close to the floor of the protected area, so as to provide pet movement discrimination, the cylindrical lenses are provided with spatially selective attenuation, so as to reduce their transmission factor as a function of the angle between the sensor and points on the floor.

    Abstract translation: 用于被动红外入侵传感器的改进的红外透镜阵列,其保持对在中部和近场移动的入侵者的高检测能力,并且在近场中的入侵者和宠物的移动之间进行良好的区分。 透镜阵列的上部由包含凸透镜的至少一行构成,可操作以将待保护区域的远场和中场辐射聚焦到传感器的检测器上。 阵列的下部具有至少一行包含圆柱形透镜,其对称轴垂直对准,用于将来自中部和近场的红外辐射聚焦到检测器上。 每个柱面透镜将保护区域的垂直帘幕聚焦到红外探测器上。 为了确保靠近受保护区域的传感器灵敏度降低,为了提供宠物运动识别,柱面透镜被提供空间选择性衰减,以便根据传感器之间的角度减小其透射系数 并点在地板上。

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