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1. 发明授权

US11506645B2 Device with deuterium lamp and liquid chromatograph 有权
公开(公告)号：US11506645B2
公开(公告)日：2022-11-22
申请号：US17054930
申请日：2018-12-09
申请人： Shimadzu Corporation
发明人： Takuya Yonekura , Yugo Ishihara
IPC分类号： G01N30/86 , G01N30/74 , G01R31/44
摘要： The device is provided with a lamp lighting unit configured to perform an operation for lighting a deuterium lamp by controlling a lamp drive unit and a heater drive unit, an abnormality determination unit configured to determine, in a prescribed sequence, whether or not a voltage or a current detected by a lamp voltage detection unit, a lamp current detection unit, a heater voltage detection unit, and a heater current detection unit is abnormal, and an abnormality cause identification unit configured to identify, in a case the voltage or the current is determined to be abnormal by the abnormality determination, the cause of the abnormality, based on the timing at which the abnormality determination unit determines that the voltage or the current is abnormal.

2. 发明授权

US10935425B2 Spectroscopic detector 有权
公开(公告)号：US10935425B2
公开(公告)日：2021-03-02
申请号：US16626404
申请日：2017-07-18
申请人： SHIMADZU CORPORATION
发明人： Masato Watanabe , Takuya Yonekura , Hiroyuki Togo , Shinji Tsuji , Yugo Ishihara , Atsushi Sakamoto
IPC分类号： G01J3/10 , G01J3/02 , G01J3/28
摘要： A spectroscopic detector includes a lamp house, a sample cell, an optical sensor, a heater, a cooling fan, a temperature sensor, and a control device. The heater heats the lamp house while being directly or indirectly in contact with the lamp house containing a light source. The cooling fan is for cooling the lamp house. The temperature sensor is for detecting a temperature of the lamp house. The control device is configured to control operations of the light source, the heater, and the cooling fan. The control device includes a temperature control part configured to maintain a temperature of the lamp house while the light source is lit at a set temperature by controlling at least output of the heater based on a detection signal of the temperature sensor.

3. 发明授权

US09198267B2 Deuterium lamp power supply circuit 有权
标题翻译：氘灯电源电路
公开(公告)号：US09198267B2
公开(公告)日：2015-11-24
申请号：US14063071
申请日：2013-10-25
申请人： SHIMADZU CORPORATION
发明人： Yugo Ishihara , Hajime Bungo
IPC分类号： H05B41/30 , H05B41/14 , H05B41/34
CPC分类号： H05B41/14 , H05B41/30 , H05B41/34
摘要： Provided is a deuterium lamp power supply circuit capable of preventing the application of a high switch-to-ground voltage to a switch when applying a voltage between a positive electrode and negative electrode to light a deuterium lamp. The power supply circuit includes a capacitor for applying a voltage between the positive electrode and the negative electrode, with one terminal of the capacitor being connected to the positive electrode; a power supply, installed between the capacitor and the negative electrode, for charging the capacitor; and a two-terminal switch connected in parallel to the power supply. The switch is placed at a location close to ground, and thus a high switch-to-ground voltage is not applied to the switch.
摘要翻译：提供了一种氘灯电源电路，其能够在正电极和负电极之间施加电压以对氘灯进行点亮时，防止对开关施加高的开关对地电压。电源电路包括用于在正极和负极之间施加电压的电容器，电容器的一个端子连接到正极; 安装在电容器和负极之间的用于对电容器充电的电源; 以及与电源并联连接的两端子开关。开关位于靠近地面的位置，因此开关对地开关电压不高。

4. 发明授权

US11451050B2 Chromatograph apparatus and load switch circuit 有权
公开(公告)号：US11451050B2
公开(公告)日：2022-09-20
申请号：US16725322
申请日：2019-12-23
申请人： SHIMADZU CORPORATION
发明人： Yugo Ishihara
IPC分类号： H02H9/00 , H03K17/16 , H05B41/36 , G01N30/02
摘要： A load switch circuit for turning on and off supply of DC power to a load circuit of a chromatograph apparatus, the load switch circuit comprising: a first switching element connected to between a first node that receives DC voltage and the load circuit, the first switching element including a control terminal that receives a potential of a second node; a capacitive element connected to between the first and second nodes; a first resistive element connected to between the first and second nodes; and a bypass circuit configured to pass current between the first and second nodes upon turn-off of the first switching element.

5. 发明授权

US10337919B2 Optical unit and spectrometer provided with same 有权
公开(公告)号：US10337919B2
公开(公告)日：2019-07-02
申请号：US15756406
申请日：2015-09-01
申请人： SHIMADZU CORPORATION
发明人： Yugo Ishihara
IPC分类号： G01J3/28 , G01J3/36 , G01J1/44 , G01J3/18
摘要： A PDA 5 has a plurality of light receiving elements. An A/D converter 30 converts an output signal from each of the light receiving elements of the PDA 5. A conversion processing unit 42 sequentially executes, for the plurality of light receiving elements, a conversion process of converting an output signal from an identical one of the light receiving elements at least twice within a preset time range with the A/D converter 30, to acquire at least two output values. An average value calculation unit 43 calculates an average value of the at least two output values for each of the light receiving elements acquired by the process executed by the conversion processing unit 42.

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