公开(公告)号：US5115668A

公开(公告)日：1992-05-26

申请号：US620108

申请日：1990-11-30

Applicant: Jeanne A. Welch

Inventor： Jeanne A. Welch

IPC: G01L11/02 ,  G01M3/32 ,  G01M3/40

CPC classification number: G01M3/3272 ,  G01L11/02 ,  G01M3/40

Abstract: A low pressure, low energy measuring device for indirectly and non-invasiy measuring the pressure of a gaseous medium in a sealed system, such as gas discharge lamp, is disclosed. The measuring device and method measures the luminance of an externally-induced, high-frequency glow discharge of a gas in the lamp by non-invasive means. Comparison of the measured luminance with calibrated luminance vs. pressure data provides the pressure for the gas. In one embodiment, the components of the measuring device form a stand-alone unit useful for testing multiple sealed systems. In another embodiment, certain components of the device are integrated into the lamp's discharge system to facilitate measurement in the field. A separate peripheral unit is required with this latter embodiment.

Abstract translation: 公开了一种低压，低能量测量装置，用于间接和非侵入性地测量诸如气体放电灯的密封系统中的气体介质的压力。 测量装置和方法通过非侵入性方法测量灯内的气体的外部诱发的高频辉光放电的亮度。 测量亮度与校准亮度与压力数据的比较为气体提供了压力。 在一个实施例中，测量装置的部件形成用于测试多个密封系统的独立单元。 在另一个实施例中，该装置的某些组件被集成到灯的放电系统中以便于现场的测量。 后一个实施例需要一个独立的外围单元。

公开(公告)号：US5050991A

公开(公告)日：1991-09-24

申请号：US415740

申请日：1989-09-29

Applicant: Jeanne A. Welch

Inventor： Jeanne A. Welch

IPC: G01J1/16 ,  G01J1/44 ,  G01J3/18 ,  G01J3/36 ,  G01J3/42 ,  G01N21/25

CPC classification number: G01J3/42 ,  G01N21/255 ,  G01J2001/1636 ,  G01J2001/442 ,  G01J3/1838 ,  G01J3/36 ,  G01N2201/06166 ,  G01N2201/064

Abstract: An apparatus is disclosed for measuring the spectra of a high optical density sample having substantially known optical properties. In a preferred embodiment, the apparatus comprises: a laser for producing a light beam; a Raman cell responsive to the light beam for generating a first light containing a plurality of preselected wavelength components; an optical system for directing the first light through the sample; a dispersion device for spatially separating the first light passed through the sample into its plurality of preselected wavelength components; a plurality of light detectors positioned to respectively receive the spatially-separated preselected wavelength components and to convert the photons in each of the spatially-separated preselected components into a plurality of associated photocurrents having amplitudes respectively representative of the numbers of photons in the spatially-separated preselected wavelength components; and a photon counter for respectively converting the plurality of associated photocurrents into a plurality of photon counts corresponding to the transmittance of the sample at the respective preselected wavelength components of the first light passing through the sample. In a modification of the invention, the apparatus further includes an energy meter adapted to receive a portion of the light beam for generating an energy signal representative of the total energy in the light beam, and processing means responsive to the plurality of photon counts and to the energy signal for determining the output transmittance of the sample at the preselected wavelength components of the first light passing through the sample.

Abstract translation: 公开了一种用于测量具有基本上已知光学特性的高光密度样品的光谱的装置。 在优选实施例中，该装置包括：用于产生光束的激光器; 响应于所述光束的拉曼单元，用于产生包含多个预选波长分量的第一光; 用于将第一光引导通过样品的光学系统; 用于将通过所述样品的所述第一光线空间分离成其多个预选波长分量的分散装置; 多个光检测器被定位成分别接收空间分离的预选波长分量并将每个空间分离的预选分量中的光子转换成多个相关联的光电流，其具有分别代表空间分离的光子数量的幅度 预选波长分量; 以及光子计数器，用于将多个相关联的光电流分别转换成对应于通过样品的第一光的各个预选波长分量的样品的透射率的多个光子计数。 在本发明的修改中，该装置还包括适于接收光束的一部分以产生表示光束中的总能量的能量信号的能量计，以及响应于多个光子计数的处理装置，以及 用于确定通过样品的第一光的预选波长分量处的样品的输出透射率的能量信号。

公开(公告)号：US4939926A

公开(公告)日：1990-07-10

申请号：US361074

申请日：1989-06-05

Applicant: Jeanne A. Welch

Inventor： Jeanne A. Welch

IPC: G01M3/38 ,  G01M3/40

CPC classification number: G01M3/40 ,  G01M3/38

Abstract: An apparatus for measuring leaks associated with a sealed lamp assembly, ludes an RF source for establishing an ionizing discharge in association with the lamp assembly, a source of continuous-wave probe radiation for irradiating the established ionizing discharge, and a pickup coil and associated circuitry for monitoring current flow through the ionizing discharge in response to the probe irradiation of the ionizing discharge. A signal is provided representing changes in the ionizing discharge resulting from the probe irradiation. A partially reflecting mirror partially deflects a portion of the probe radiation before it reaches the ionizing discharge. A signal is provided representing the deflected probe radiation. A computer receives the signals representing the changes in the ionizing discharge and the signals representing the deflected probe radiation, whereby the computer provides data representing pressure changes in the sealed lamp assembly. The pressure changes are normalized with respect to changes in the source of probe radiation.

Abstract translation: 一种用于测量与密封灯组件相关联的泄漏的装置，包括用于与灯组件相关联地建立电离放电的RF源，用于照射已建立的电离放电的连续波探测辐射源，以及拾取线圈及相关电路 用于响应于电离放电的探针照射来监测通过电离放电的电流。 提供表示由探针照射产生的电离放电的变化的信号。 部分反射镜在其到达电离放电之前部分地偏转探测辐射的一部分。 提供表示偏转的探针辐射的信号。 计算机接收表示电离放电的变化的信号和表示偏转的探针辐射的信号，由此计算机提供表示密封的灯组件中的压力变化的数据。 相对于探头辐射源的变化，压力变化被归一化。