CN1395089A - 界面色差鉴别器 - Google Patents

界面色差鉴别器 Download PDF

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CN1395089A
CN1395089A CN 02133311 CN02133311A CN1395089A CN 1395089 A CN1395089 A CN 1395089A CN 02133311 CN02133311 CN 02133311 CN 02133311 A CN02133311 A CN 02133311A CN 1395089 A CN1395089 A CN 1395089A
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light
light path
color difference
spectroscope
discrimination device
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CN1180238C (zh
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林秉礼
刘仁明
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Sichuan Nigale Biomedical Inc
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Sichuan Nigale Biomedical Inc
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Abstract

本界面色差鉴别器由电子电路、红色激光源、聚焦透镜、分光镜构成，红色激光源、聚焦透镜和分光镜依次位于发射光路上，分光镜后面接收检测信号光路上设置有光敏元件。本发明采用分光镜分离发射光和反射光，缩短了接收光路，同时消除发射光对接收光路的干扰，提高了信杂比。发射激光经聚焦透镜和分光镜，将光线集中射在距分光镜10mm至100mm的任意位置上，形成直径小于1mm的光斑。当光斑照射到具有色差的分层物体(固体、液体、气体)上，并发生相对运动时，反射光即发生变化，经光敏元件感知后，即输出相应信号，告知已检测到色差界面。电子电路产生特殊电源，对激光管供电，同时处理光敏元件输出的界面色差信号。

Description

界面色差鉴别器
技术领域：
本发明涉及一种光学检测仪器，特别是一种判定分层物体界面色差的仪器。
背景技术：
已有的界面色差鉴别器，由电子电路、红色激光源、光敏管、圆光纤、聚焦透镜和反射镜组成，红色激光源通过光纤的内光路，将激光引至探头，通过聚焦透镜和反射镜照射在被测目标上，检测信号沿发射光路反射，经反射镜、聚焦透镜和光纤外光路作用于光敏管，电子电路供给激光管电源，并处理光敏管接收的反射光，判定色差界面是否存在。该探测器由于采用光纤及聚焦透镜、反射镜，组成较长的光路，因而光损耗较大，结构也较复杂，而且发射光路和接收光路重叠，造成干扰，信杂比降低，同时，对电子电路也有较高要求。
发明内容：
鉴于上述界面色差鉴别器存在的不足，本发明的目的是设计一种结构简单、信杂比较高、体积小、降低对电子电路要求、便于安装的光电一体化界面色差鉴别器。
本发明采取的结构特点能够达到上述发明目的，本界面色差鉴别器，包括电子电路、红色激光源和聚焦透镜，其特征在于在发射光路上有一分光镜，红色激光源、聚焦透镜和分光镜依次位于发射光路上，分光镜后面接收检测信号光路上设置有光敏元件，电子电路与光敏元件和激光源相连接。
本发明采用分光镜分离发射光和反射光，缩短了接收光路。光敏元件直接安装在分光镜后面，消除发射光对接收光路的干扰，提高了信杂比。发射激光经聚焦透镜和分光镜，将光线集中射在距分光镜10mm和100mm的任意位置上，形成直径小于1mm的光斑。当光斑照射到具有色差的分层物体(固体、液体、气体)上，并发生相对运动时，反射光即发生变化，经光敏元件感知后即输出相应信号，告知已检测到色差界面。电子电路产生特殊电源，对激光管供电，同时处理光敏元件输出的界面色差信号。
本发明与现有技术相比，舍弃了光纤，用分光镜替换了反射镜，用分光镜分离发射光路和接收光路，从而简化了结构、提高了信杂比，降低了对电子电路的要求，完成了光电一体化结构，减小了体积。因此使本界面色差鉴别器检测精度高、体积小，便于安装。
附图说明：
图1已有界面色差鉴别器机构示意图
图2本发明结构示意图
图3本界面色差鉴别器用于血细胞采集机——钵光电传感器的结构图
具体实施方式：
由图3可见，该传感器由激光源1、聚焦透镜2、分光镜3、光敏元件4、电子电路5、离心机套筒6构成，整个传感器固定在离心机套筒壁6上，光源1采用红色激光二极管，由电子电路5供电，。该光源光谱较窄，光功率较强，由于散射角小，光斑聚焦良好，光斑7直径可小于1mm，透过离心机套筒6上的玻璃窗口9照射在被检测容器——离心杯8肩部。分光镜3为镀铝膜半透镜，接收光敏元件4为硅光电池，安装在分光镜后面，接收光路的路径上。当离心机工作时，离心杯8中的血液被分层，各层间有色差。当分层血液成分向杯口流动时，即被光斑7照射。变化的反射光由硅光电池4感知，并将信号输至电子电路5处理后，加至微机系统作相应处理。

Claims (1)

1、界面色差鉴别器，包括电子电路、红色激光源和聚焦透镜，其特征在于在发射光路上有一分光镜，红色激光源、聚焦透镜和分光镜依次位于发射光路上，分光镜后面接收检测信号光路上设置有光敏元件，电子电路与光敏元件和激光源相连接。
CNB021333114A 2002-06-19 2002-06-19 界面色差鉴别器 Expired - Lifetime CN1180238C (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944520A (zh) * 2012-11-30 2013-02-27 金卫医疗科技(上海)有限公司 一种监测全血分层状况的方法及装置
CN107389558A (zh) * 2016-04-05 2017-11-24 唯亚威解决方案股份有限公司 用于光谱分析的光管
CN111504207A (zh) * 2020-06-09 2020-08-07 四川九八村信息科技有限公司 一种血细胞离心分层检测系统及方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944520A (zh) * 2012-11-30 2013-02-27 金卫医疗科技(上海)有限公司 一种监测全血分层状况的方法及装置
CN102944520B (zh) * 2012-11-30 2015-02-25 金卫医疗科技(上海)有限公司 一种监测全血分层状况的方法及装置
CN107389558A (zh) * 2016-04-05 2017-11-24 唯亚威解决方案股份有限公司 用于光谱分析的光管
CN107389558B (zh) * 2016-04-05 2022-02-25 唯亚威通讯技术有限公司 用于光谱分析的光管
US11442004B2 (en) 2016-04-05 2022-09-13 Viavi Solutions Inc. Light pipe for spectroscopy
CN111504207A (zh) * 2020-06-09 2020-08-07 四川九八村信息科技有限公司 一种血细胞离心分层检测系统及方法

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