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    Infrared radiation emitter
    12.
    发明申请
    Infrared radiation emitter 有权
    红外辐射发射器

    公开(公告)号：US20040238763A1

    公开(公告)日：2004-12-02

    申请号：US10857140

    申请日：2004-05-27

    Inventor： Donald S. Wood

    IPC: F21H005/00

    CPC classification number: G01J1/08 ,  G01N21/35 ,  G01N21/359 ,  G01N2201/06186 ,  H01K1/18 ,  H01K1/26 ,  H01K1/28 ,  H01K1/50 ,  H01K1/54 ,  H01K7/00

    Abstract: An emitting source capable of radiating substantial energy in the near infrared spectrum and suitable for use in non-dispersive infrared gas analyzers or other devices is described. Operation can be steady state (DC) or pulsed at high frequency with excellent modulation characteristics. The device consists of a tungsten filament mounted across the pins of a small transistor outline header and centered at the focal point of a parabolic or other shaped reflector. The header assembly is enclosed by a resistance-welded cap and window assembly having a specially sealed sapphire or other suitable IR transmissive window. Fundamental to the operation of the inventive IR emitter is the incorporation of a getter within the header package configured to prevent oxidation degradation of the tungsten filament. An inert gas backfill limits filament evaporation and further extends apparatus lifetime.

    Abstract translation: 描述了能够在近红外光谱中辐射大量能量且适用于非分散红外分析仪或其它装置的发射源。 操作可以是稳态（DC）或高频脉冲，具有出色的调制特性。 该器件由安装在小晶体管轮廓头的引脚上并以抛物面或其他形状反射器的焦点为中心的钨丝组成。 集管组件由具有特别密封的蓝宝石或其它合适的IR透射窗的电阻焊盖和窗组件封闭。 本发明的IR发射器的操作的基础是将吸气剂并入配置成阻止钨丝的氧化降解的头部封装内。 惰性气体回填法限制灯丝蒸发，进一步延长了设备寿命。

    Rapid fire detector
    13.
    发明授权
    Rapid fire detector 失效
    快速检测器

    公开(公告)号：US5103096A

    公开(公告)日：1992-04-07

    申请号：US503215

    申请日：1990-04-02

    Applicant: Jacob Y. Wong

    Inventor： Jacob Y. Wong

    IPC: G01J1/16 ,  G01J1/18 ,  G01N21/25 ,  G01N21/31 ,  G01N21/35 ,  G08B17/117 ,  G08B29/20 ,  G01N21/61

    CPC classification number: G08B17/117 ,  G01N21/255 ,  G01N21/3504 ,  G08B29/20 ,  G01J2001/161 ,  G01J2001/182 ,  G01N21/314 ,  G01N2201/0228 ,  G01N2201/06186 ,  G01N2201/0696

    Abstract: A compact low-cost fire detector responds quickly by detecting an increase in the concentration of carbon dioxide gas in the ambient air. The detector also calculates the rate of build-up of carbon dioxide. The detector avoids the use of moving parts by employing a differential temperature black body source of infrared radiation in conjunction with a dual pass band filter. One of the pass bands is located at the 4.26 micron absorption band of carbon dioxide gas and the other pass band is located at 2.20 microns at which none of the atmospheric gases has an absorption band. The latter channel serves as a reference and renders the detector immune to false alarms caused by dust or smoke particles in the air or due to deterioration of certain components. The fire detector makes use of a sample chamber that consists of a serpentine passage in a block of material, the walls of the serpentine passsage being highly reflective so as to act as a light pipe.

    Abstract translation: 一个紧凑的低成本火灾探测器通过检测环境空气中二氧化碳气体浓度的增加来快速响应。 检测器还计算二氧化碳的积聚速率。 通过采用红外辐射的差分温度黑体源与双通带滤波器相结合，检测器避免使用移动部件。 其中一个通带位于二氧化碳气体的4.26微米吸收带上，另一个通带位于2.20微米处，在此处没有一个气氛具有吸收带。 后一个通道用作参考，使得检测器免受由空气中的灰尘或烟雾颗粒引起的或由于某些组分的劣化引起的假警报。 火灾探测器利用由一块材料中的蛇形通道组成的样品室，蛇形通道的壁是高反射性的，以作为光管。

    Gas analyzers
    14.
    发明授权
    Gas analyzers 失效

    公开(公告)号：US4859859A

    公开(公告)日：1989-08-22

    申请号：US24769

    申请日：1987-03-11

    Applicant: Daniel W. Knodle ,  William E. Crone

    Inventor： Daniel W. Knodle ,  William E. Crone

    IPC: A61B5/083 ,  A61B5/097 ,  G01J1/02 ,  G01J1/18 ,  G01N21/31 ,  G01N21/35

    CPC classification number: G01J3/108 ,  A61B5/0836 ,  A61B5/097 ,  G01J3/02 ,  G01J3/0286 ,  G01N21/3504 ,  A61M16/04 ,  A61M2016/102 ,  G01J2001/182 ,  G01N2021/3166 ,  G01N2201/06186 ,  G01N2201/1218

    Abstract: Gas analyzers of the non-dispersive infrared radiation type which are designed to measure the concentration of one gas in a mixture of gases containing that gas. A novel, electrically modulated, stable, thick film infrared radiation emitter is employed to emit a beam of collimated, focused energy; and two electrically biased detectors are preferably used so that a ratioed, error eliminating output signal can be supplied to the failsafe, signal processing circuitry of the analyzer. The latter, and a conventional analog-to-digital convertor, supply information to a microcomputer which: (1) turns the infrared radiation emitter on and off; (2) controls a heater which keeps the infrared radiation detectors at a constant, precise temperature; and (3) controls displays of a variety of information concerning the gas being measured and the status of the gas analyzer. The microcomputer also accepts ambient temperature, barometric pressure, and other compensation factors. Typically, a disposable airway adapter will be included in the gas analyzer to confine the mixture of gases being analyzed to a path having a transverse dimension of precise and specific length and to provide an optical path across that stream of gases between the infrared radiation emitter and the infrared radiation detectors. The emitter and detectors are incorporated in a transducer head which can be detachably fixed to the airway adapter.

    FLUID FILM INDICATOR
    17.
    发明申请
    FLUID FILM INDICATOR 失效
    流体电泳指示器

    公开(公告)号：US20110204238A1

    公开(公告)日：2011-08-25

    申请号：US13122860

    申请日：2009-10-05

    Applicant: Leif Cronvall

    Inventor： Leif Cronvall

    IPC: G01J5/02

    CPC classification number: G01B11/0625 ,  G01N21/35 ,  G01N21/3577 ,  G01N21/474 ,  G01N21/8422 ,  G01N2201/06186

    Abstract: An apparatus for radiometric measurement of thin fluid films includes a housing (1) enclosing means of radiation, a radiation guide, a reflector (4) and one or more detectors (5). The means of radiation is normally an IR radiator (2). The radiation guide is either a radiation tube (3) or a radiation cone (7). The reflector (4) is of the type non-imagining optics. If there is more than one detector (5) normally at least one detector is a reference detector.

    Abstract translation: 用于薄流体膜的辐射测量的装置包括包围辐射装置的壳体（1），辐射引导件，反射器（4）和一个或多个检测器（5）。 辐射装置通常是IR辐射器（2）。 辐射导管是辐射管（3）或辐射锥（7）。 反射器（4）是非想象光学器件的类型。 如果有多个检测器（5），通常至少一个检测器是参考检测器。

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