公开(公告)号：US20070279633A1

公开(公告)日：2007-12-06

申请号：US10596390

申请日：2004-12-10

申请人： Seung-Hwan Yi ,  Jeong-Ik Park ,  Ji-Hyun Kang

发明人： Seung-Hwan Yi ,  Jeong-Ik Park ,  Ji-Hyun Kang

IPC分类号： G01N21/35

CPC分类号： G01N21/3504 ,  G01N21/0303 ,  G01N21/031 ,  G01N21/61

摘要： A unique optical cavity for NDIR gas sensor module and test results for the CO2 concentration from 100 ppm to 2,000 ppm are disclosed. The proposed sensor module shows the maximum peak voltage at 500 ms pulse duration, however, it has a maximum fractional voltage changes at 200 ms pulse duration with 18,000 times amplification gain. From 100 ppm to 2,000 ppm, the voltage difference of sensor module (V) is 200 mV at 200 ms pulse duration and 3 sec. turn-off time.

摘要翻译： 公开了用于NDIR气体传感器模块的独特的光学腔和从100ppm到2,000ppm的CO 2浓度的测试结果。 所提出的传感器模块显示在500 ms脉冲持续时间的最大峰值电压，但是，在200 ms脉冲持续时间内，它具有最大的分数电压变化，具有18,000倍的放大增益。 从200ppm到2000ppm，传感器模块（V）的电压差在200ms脉冲持续时间和3秒时为200mV。 关闭时间。

公开(公告)号：US07449694B2

公开(公告)日：2008-11-11

申请号：US10596390

申请日：2004-12-10

申请人： Seung-Hwan Yi ,  Jeong-Ik Park ,  Ji-Hyun Kang

发明人： Seung-Hwan Yi ,  Jeong-Ik Park ,  Ji-Hyun Kang

IPC分类号： G01J5/08

CPC分类号： G01N21/3504 ,  G01N21/0303 ,  G01N21/031 ,  G01N21/61

摘要： A unique optical cavity for NDIR gas sensor module and test results for the CO2 concentration from 100 ppm to 2,000 ppm are disclosed. The proposed sensor module shows the maximum peak voltage at 500 ms pulse duration, however, it has a maximum fractional voltage changes at 200 ms pulse duration with 18,000 times amplification gain. From 100 ppm to 2,000 ppm, the voltage difference of sensor module (V) is 200 mV at 200 ms pulse duration and 3 sec. turn-off time.

摘要翻译： 公开了用于NDIR气体传感器模块的独特的光学腔和从100ppm到2,000ppm的CO 2浓度的测试结果。 所提出的传感器模块显示在500 ms脉冲持续时间的最大峰值电压，但是，在200 ms脉冲持续时间内，它具有最大的分数电压变化，具有18,000倍的放大增益。 从200ppm到2000ppm，传感器模块（V）的电压差在200ms脉冲持续时间和3秒时为200mV。 关闭时间。

公开(公告)号：US20090284745A1

公开(公告)日：2009-11-19

申请号：US11577408

申请日：2004-10-11

申请人： Seung-Hwan Yi ,  Jeong-Ik Park

发明人： Seung-Hwan Yi ,  Jeong-Ik Park

IPC分类号： G01N21/61 ,  G02B5/10 ,  G01N21/03

CPC分类号： G01N21/3504 ,  G01N21/031 ,  G01N21/61

摘要： Disclosed are an optical cavity and a gas cell fabricated by using the same. The optical cavity is the most important element of the gas cell, which measures density of gas using light absorption characteristics of the gas. The gas cell includes two quadratic parabolic concave mirrors, which share a focus and an optical axis. Light incident toward the focus is reflected from the two quadratic parabolic concave mirrors so that the light may travel in parallel to the optical axis and the light incident in parallel to the optical axis may pass through the focus while being reflected from the two quadratic parabolic concave mirrors. The optical cavity includes two quadratic parabolic concave mirrors, which are aligned in opposition to each other with different focus lengths such that they share the focus using the reflection characteristics thereof.

摘要翻译： 公开了一种光腔和使用该腔的气室。 光学腔是气室中最重要的元素，它利用气体的吸光特性来测量气体的密度。 气室包括共享焦点和光轴的两个二次抛物面凹面镜。 从焦点的两个二次抛物面凹面镜反射光，使得光可以平行于光轴行进，并且平行于光轴入射的光可以通过焦点，同时从两个二次抛物面凹面反射 镜子。 光腔包括两个二次抛物面凹面镜，它们以不同的聚焦长度彼此相对对准，使得它们使用其反射特性共享聚焦。

公开(公告)号：US07609375B2

公开(公告)日：2009-10-27

申请号：US11922343

申请日：2006-06-16

申请人： Jeong-Ik Park

发明人： Jeong-Ik Park

IPC分类号： G01N1/10 ,  G01N21/00 ,  G01J5/02

CPC分类号： G01N21/3504 ,  G01N21/031 ,  G01N21/61

摘要： An optical cavity for a Non-Dispersive Infrared gas sensor has invented comprising two oppositely arranged parabolic mirrors having common focus located on the common optical axis of the parabolic mirrors, and a plane mirror arranged along the optical axis between the vertex of each of the parabolic mirrors. The NDIR gas sensor has an extended optical path to increase precision and accuracy in the measurement, and substantially increased ventilation opening size to facilitate in and out of the target gas through the optical cavity thereby decreasing the response time required for measuring the gas concentration. The sensors based on the principal of Non-Dispersive Infrared Detection is used the light-absorbing characteristic of gases to measure the amount of light absorption that occur at the specific wavelength absorbed by a target gas and calculate the target gas concentration.

摘要翻译： 用于非分散红外线气体传感器的光学腔发明包括两个相对布置的抛物面反射镜，其具有位于抛物面镜的公共光轴上的共同焦点，以及沿着光轴布置在每个抛物线的顶点之间的平面镜 镜子。 NDIR气体传感器具有扩展的光路，以提高测量的精度和准确度，并且大大增加通风口尺寸以便于通过光学腔进出目标气体，从而减少测量气体浓度所需的响应时间。 使用基于非分散红外检测原理的传感器，用气体的吸光特性来测量在目标气体吸收的特定波长处发生的光吸收量，并计算目标气体浓度。

公开(公告)号：US20090135415A1

公开(公告)日：2009-05-28

申请号：US11922343

申请日：2006-06-16

申请人： Jeong-Ik Park

发明人： Jeong-Ik Park

IPC分类号： G01N1/10

CPC分类号： G01N21/3504 ,  G01N21/031 ,  G01N21/61

摘要： An optical cavity for a Non-Dispersive Infrared gas sensor has invented comprising two oppositely arranged parabolic mirrors having common focus located on the common optical axis of the parabolic mirrors, and a plane mirror arranged along the optical axis between the vertex of each of the parabolic mirrors. The NDIR gas sensor has an extended optical path to increase precision and accuracy in the measurement, and substantially increased ventilation opening size to facilitate in and out of the target gas through the optical cavity thereby decreasing the response time required for measuring the gas concentration. The sensors based on the principal of Non-Dispersive Infrared Detection is used the light-absorbing characteristic of gases to measure the amount of light absorption that occur at the specific wavelength absorbed by a target gas and calculate the target gas concentration.

摘要翻译： 用于非分散红外线气体传感器的光学腔发明包括两个相对布置的抛物面反射镜，其具有位于抛物面镜的公共光轴上的共同焦点，以及沿着光轴布置在每个抛物线的顶点之间的平面镜 镜子。 NDIR气体传感器具有扩展的光路，以提高测量的精度和准确度，并且大大增加通风口尺寸以便于通过光学腔进出目标气体，从而减少测量气体浓度所需的响应时间。 使用基于非分散红外检测原理的传感器，用气体的吸光特性来测量在目标气体吸收的特定波长处发生的光吸收量，并计算目标气体浓度。