公开(公告)号：US20250044262A1

公开(公告)日：2025-02-06

申请号：US18784777

申请日：2024-07-25

Applicant: SHIMADZU CORPORATION

Inventor： Masato WATANABE

IPC: G01N30/66 ,  G01N30/02 ,  G01N30/30 ,  G01N30/62

Abstract: A lamp house (6), a lamp (8) including a light emitting part (16) that emits light and a base end portion (18) from which a lead wire from the light emitting part (16) is drawn out, the lamp (8) being attached to the lamp house (6) in a state where the light emitting part (16) is accommodated in the lamp house (6) and the base end portion (18) is exposed to the outside of the lamp house (6), a housing (2) having an internal space and a ventilation port (24, 32) for taking air into the internal space from outside of the internal space and exhausting the air from the internal space, and accommodating the lamp house (6) in the internal space in a manner that the lamp house (6) and the base end portion (18) of the lamp (8) are located on a flow path of the air flowing through the internal space, a fan (12, 12′) provided so as to form a flow of the air in the internal space of the housing (2), and a heater (10, 10′) for heating the air taken into the internal space of the housing (2) are included. The base end portion (18) of the lamp (8) and the lead wire (20) are heated by receiving the air heated by the heater (10, 10′).

公开(公告)号：US20240328932A1

公开(公告)日：2024-10-03

申请号：US18614653

申请日：2024-03-23

Applicant: SHIMADZU CORPORATION

Inventor： Masato WATANABE

IPC: G01N21/31

CPC classification number: G01N21/31

Abstract: Provided are a light source (2) that emits light to be applied to a sample, a spectroscopic element (12) that disperses the light from the sample for each wavelength; and a light receiver (14) in which light receiving elements for detecting light of each wavelength dispersed by the spectroscopic element (12) are arranged, the light receiver (14) having a surface in direct with a filter layer (16) that shields high-order diffracted light from the spectroscopic element.

公开(公告)号：US20200158569A1

公开(公告)日：2020-05-21

申请号：US16604998

申请日：2017-04-21

Applicant: SHIMADZU CORPORATION

Inventor： Masato WATANABE ,  Hiroyuki TOGO

IPC: G01J3/02

Abstract: A spectral detector includes a light source, a sample cell in which a sample flows therein, an optical sensor, an optical system that guides light from the light source to the sample cell and guides light from the sample cell to the optical sensor, the optical system has a spectroscope for dispersing light and the spectroscope is arranged between the light source and the sample cell or between the sample cell and the optical sensor, and a housing integrally including a lamp house part for housing the light source and an optical system housing part for housing at least the sample cell and the optical system. Since the lamp house part and the optical system housing part are integrated to constitute the housing, heat is easily transmitted from the lamp house part to the optical system housing part, and the time until the entire detector reaches thermal equilibrium is shortened.

公开(公告)号：US20200158626A1

公开(公告)日：2020-05-21

申请号：US16604999

申请日：2017-12-25

Applicant: SHIMADZU CORPORATION

Inventor： Masato WATANABE

IPC: G01N21/05 ,  G01N30/74 ,  G01N21/27

Abstract: A flow cell includes a cell into which a liquid to be measured is introduced and is arranged so that a measurement light to be used for measuring an optical characteristic of the liquid enters one side of the cell and exits from the other side of the cell, an inlet for leading the liquid to flow into the cell, and an outlet for leading the liquid in the cell to flow out from the cell. The inlet and the outlet are provided to form an interface between a liquid flowing into the cell through the inlet and a liquid with which the cell has been already filled at two places on an optical path of the measurement light passing through the cell.

公开(公告)号：US20160234904A1

公开(公告)日：2016-08-11

申请号：US15015810

申请日：2016-02-04

Applicant: SHIMADZU CORPORATION

Inventor： Yusuke NAGAI ,  Keisuke OGAWA ,  Masato WATANABE ,  Kumiko JINGU ,  Masanori FUJIWARA ,  Tomoyuki YAMAZAKI

IPC: H05B33/08 ,  G01N21/33

CPC classification number: H05B33/0851 ,  G01N21/33 ,  G01N2201/0621 ,  G01N2201/0638 ,  G01N2201/0692 ,  G01N2201/0695

Abstract: Provided is an optical analyzer for performing a feedback control on the amount of light emitted from an LED as a light source, in which the configuration of an optical system is made simple and the degree of freedom in optical system arrangement is secured. An optical member 2 for focusing most of light while discharging part of the light as unfocused light is provided on an optical path from a light casting unit 1 to a sample cell 3. The optical member 2 can be achieved with a simple configuration, for example, two ball lenses spaced apart by a predetermined distance from each other. The light focused by the optical member 2 is cast as measurement light into the sample cell 3. Meanwhile, a second photodetector 5 is arranged at a position where the unfocused light reaches. The second photodetector 5 generates a detection signal in accordance with the amount of light that has entered the second photodetector 5 as monitored light, and a drive current to be supplied to an LED is controlled through a drive current controlling unit 6 and a current source 7 such that the amount of light is maintained at a fixed level.

Abstract translation: 提供了一种用于对从光源发出的光量进行反馈控制的光学分析器，其中光学系统的结构简单且光学系统布置的自由度得到确保。 在从光铸造单元1到样品池3的光路上设置有用于聚焦大部分光的光学构件2，同时以未聚焦的光排出部分光。光学构件2可以以简单的构造实现，例如 ，彼此隔开预定距离的两个球透镜。 将由光学构件2聚焦的光作为测量光铸造到样品池3中。同时，第二光电检测器5布置在未聚焦的光到达的位置。 第二光电检测器5根据作为监视光进入第二光电检测器5的光量产生检测信号，通过驱动电流控制单元6和电流源7控制提供给LED的驱动电流 使得光量保持在固定的水平。

公开(公告)号：US20140060163A1

公开(公告)日：2014-03-06

申请号：US14012227

申请日：2013-08-28

Applicant: SHIMADZU CORPORATION

Inventor： Masato WATANABE ,  Masahide GUNJI

IPC: G01N30/30

CPC classification number: G01N30/30 ,  Y10T137/6416 ,  G01N2030/626

Abstract: A heat insulating member 13 is provided on the outer circumference of a connection pipe 11. The heat insulating member 13 includes: a tube 12; and an air layer 15 between the connection pipe 11 and the tube 12. Accordingly, it is possible to always keep the temperature of a sample component at the time of detection by a detector constant and thus prevent an influence of the temperature on an output result of the detector, in a low flow rate analysis using a modularized column unit and a modularized detection unit.

Abstract translation: 绝缘构件13设置在连接管11的外周上。隔热构件13包括：管12; 以及在连接管11和管12之间的空气层15.因此，可以通过检测器始终保持检测时的样品成分的温度恒定，从而防止温度对输出结果的影响 的检测器，在使用模块化柱单元和模块化检测单元的低流量分析中。

公开(公告)号：US20200249090A1

公开(公告)日：2020-08-06

申请号：US16266132

申请日：2019-02-04

Applicant: Shimadzu Corporation

Inventor： Masato WATANABE

IPC: G01J3/28 ,  G01J3/18 ,  G01J3/02

Abstract: The purpose is to reduce the influence on the measurement due to high order diffracted light without arranging a filter for removing high order diffracted light between a diffraction grating and a PDA. The correction method includes a correction coefficient determination step of determining a correction coefficient on a rate of a detection signal value derived from a second order diffracted light of light in the first wavelength range contained in a detection signal value of a long wavelength side photodiode for detecting light in the second wavelength range in the photodiode array, and a correction unit configured to obtain a detection signal value derived from light in the second wavelength range from a detection signal value of the long wavelength side photodiode by using the correction coefficient determined by the correction coefficient determination step.

公开(公告)号：US20220091077A1

公开(公告)日：2022-03-24

申请号：US17422274

申请日：2019-01-17

Applicant: SHIMADZU CORPORATION

Inventor： Takuya YONEKURA ,  Masato WATANABE

IPC: G01N30/74

Abstract: An absorbance detector for a chromatograph includes a light source, a flow cell that receives light generated by the light source, a photodetector that detects light transmitted through the flow cell, a light shield member that shields a least part of the light generated from the light source to the flow cell, a motor that rotates the light shield member to change the light shield member between a light-shielding state where the light shield member shields at least part of the light generated from the light source to the flow cell and a non-light-shielding state where the light shield member does not shield the light generated from the light source to the flow cell, and a reference position detector that rotates the motor and also acquires a change in amount of light received by the photodetector to detect a reference position of the light shield member in a rotation direction of the light shield member based on the acquired change in the amount of the received light.

公开(公告)号：US20200158571A1

公开(公告)日：2020-05-21

申请号：US16604995

申请日：2017-04-20

Applicant: SHIMADZU CORPORATION

Inventor： Masato WATANABE ,  Masahide GUNJI

IPC: G01J3/28 ,  G01J3/04 ,  G01J3/42 ,  G01J3/10

Abstract: Provided is a spectrophotometer having a positional relationship between the spectroscope and a PDA that is set to have a distance between a reflection position of light reflected on a light receiving surface of a corresponding one of PDs constituting the PDA, being configured to receive at least light having a wavelength of from 200 nm to 300 nm, and an incident position at which light reflected at the reflection position is incident on a light receiving surface of the PDA after being re-reflected on the protective plate, the distance being equal to or less than a width dimension of any one of the PDs constituting the PDA.

公开(公告)号：US20200088699A1

公开(公告)日：2020-03-19

申请号：US16469744

申请日：2017-11-13

Applicant: Shimadzu Corporation

Inventor： Masato WATANABE

IPC: G01N30/74

Abstract: A detector includes a light source configured to emit measurement light, a flow cell incorporating a cell channel through which a sample solution flows inside, a photodetector configured to detect light from the flow cell, an optical system configured to guide light from the light source to the flow cell and guide light from the flow cell to the photodetector, and a flow cell accommodating part configured to cover the flow cell so as to spatially separate the flow cell from the optical system. Of the side surfaces of the flow cell accommodating part, the side surfaces facing the light incident surface and the light exit surface of the flow cell are formed from wall surfaces made of a light transmissive material, or sealed by a light transmissive plate material.