公开(公告)号：JP2008070274A

公开(公告)日：2008-03-27

申请号：JP2006250167

申请日：2006-09-15

Applicant: Shimadzu Corp ,  株式会社島津製作所

Inventor： FUJITA TAKESHI

IPC: G01J3/36 ,  G01N21/27 ,  G01N21/33

CPC classification number: G01J3/10 ,  G01J3/027 ,  G01J3/36

Abstract: PROBLEM TO BE SOLVED: To prevent saturation of light receiving elements which is apt to saturate by reducing the accumulated charge amount without reducing the signal strength of the light receiving elements compatible with an unnecessarily large wavelength range.
SOLUTION: The light emission spectrum of a light source 2 is measured (step S1). A threshold exceeded only by a projecting wavelength band of the spectrum intensity is set based on the light emission spectrum of the light source 2 (step S2). The ratio between the peak value of the wavelength band exceeding the threshold and the set threshold is determined (step S3). The charge accumulation time of the light receiving elements corresponding to the wavelength band not higher than the threshold is set as the longest charge accumulation time among charge accumulation times at which saturation does not occur in any light receiving element (step S4). Based on the ratio between the peak value of the wavelength band exceeding the threshold and the threshold, the charge accumulation time of the light receiving elements corresponding to the wavelength band exceeding the threshold is set (step S5).
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：通过减少累积的电荷量来防止容易饱和的光接收元件的饱和，而不会降低与不必要的大的波长范围兼容的光接收元件的信号强度。 解决方案：测量光源2的发光光谱（步骤S1）。 基于光源2的发光光谱设定仅通过光谱强度的投射波长带超出的阈值（步骤S2）。 确定超过阈值的波长带的峰值与设定的阈值之间的比率（步骤S3）。 对应于不高于阈值的波长带的光接收元件的电荷累积时间被设定为在任何光接收元件中不会发生饱和的电荷累积时间之间的最长电荷累积时间（步骤S4）。 基于超过阈值的波长带的峰值与阈值之间的比率，设定与超过阈值的波长带对应的受光元件的电荷累积时间（步骤S5）。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2001343283A

公开(公告)日：2001-12-14

申请号：JP2000165465

申请日：2000-06-02

Applicant: SHIMADZU CORP

Inventor： FUJITA TAKESHI

IPC: G01J3/02 ,  G01J3/12 ,  G01J3/28

Abstract: PROBLEM TO BE SOLVED: To provide an ultraviolet and visible ray detecting device capable of easily performing regular performance check, and performing the power saving and automation of validation works. SOLUTION: This ultraviolet and visible ray detecting device is set so that translucent holes 18 and 19 can be positioned on a light path between the grating and detector. A disc 10 is rotated by a rotary dial 14, and a holmium filter 1 is arranged on the light path, and the wavelength of a light irradiated to the holmium filter 1 is scanned within the range of 190-900 nm, and the absorption maximum wavelength of the transmitted light intensity is calculated so that the accuracy of the wavelength can be calibrated. Then, the transmitted light intensity of an open part 7 and a labeled optical filter 4 on the light path is measured so that the accuracy of absorbance can be calibrated. Then, the open part 7 and optical filters 2, 3, 4, 5, and 6 are successively arranged on the light path, and the transmitted light intensity is measured, and the linearity of each measured value is judged so that the linearity can be calibrated. Also, the holmium filter 1 and the optical filters 2-6 can be easily removed from the disk 10 so as to be calibrated.

公开(公告)号：JP2001133445A

公开(公告)日：2001-05-18

申请号：JP31455899

申请日：1999-11-05

Applicant: SHIMADZU CORP

Inventor： FUJITA TAKESHI

IPC: G01N30/26

Abstract: PROBLEM TO BE SOLVED: To reduce the peak of a sample solvent. SOLUTION: In the present invention, a sample being stored at a sample loop 16 is pushed by a mobile phase being fed into a liquid-feeding pump 3 from a mobile phase well 2, is passed through a sample loop inlet port (d) and a leading port (b), is set to a separation column 5 for elution, and then is analyzed by a detector 6. In this case, when the sample is to be fed to the separation column 5, dissolved gas in the sample is deaerated by a deaeration device 1, thus eliminating the peak of a solvent.

公开(公告)号：JP2000074820A

公开(公告)日：2000-03-14

申请号：JP24156798

申请日：1998-08-27

Applicant: Shimadzu Corp ,  株式会社島津製作所

Inventor： FUJITA TAKESHI

IPC: G01N21/01 ,  G01N30/74

Abstract: PROBLEM TO BE SOLVED: To provide a high-speed liquid chromatograph capable of checking simply and precisely without requiring an unnecessary labor, at the time of checking accuracy of a wavelength of a spectrophotometer detector.
SOLUTION: This liquid chromatograph is a spectrophotometer detector composed of a see-through deuterium lamp 11, a diffraction lattice 4, a flow cell 6, and a photodetector 7, and a low-pressure mercury lamp 8 and a lens 9 are installed in front of an optical system of the see-through deuterium lamp 11, and the light of the low-pressure mercury lamp 8 is focused on the center of a hole 10 of the see-through deuterium lamp 11 by the lens 9, thereby enables accurate measuring of a wavelength simply and precisely.
COPYRIGHT: (C)2000,JPO

Abstract translation: 要解决的问题：在检查分光光度计检测器的波长的精度时，提供能够简单且精确地检查而不需要不必要的劳动的高速液相色谱仪。 解决方案：该液相色谱仪是由透明氘灯11，衍射光栅4，流通池6和光电检测器7以及低压汞灯8和透镜9组成的分光光度计检测器 通过氘灯11的光学系统，并且通过透镜9将低压汞灯8的光聚焦在透明氘灯11的孔10的中心，从而能够精确测量 简单而精确的波长。

公开(公告)号：JPH11221403A

公开(公告)日：1999-08-17

申请号：JP2708498

申请日：1998-02-09

Applicant: SHIMADZU CORP

Inventor： FUJITA TAKESHI

IPC: B01D19/00

Abstract: PROBLEM TO BE SOLVED: To prevent backward flow of a solvent even in the case a degassing apparatus is stopped while pressure control of a solvent bottle being forgotten by forming a bypass flow route having resistance between a purge tube and either an upper part space of a container or a somewhere of bent tube to a vent valve installed in the vent tube. SOLUTION: At the time of degassing, helium gas is bubbled in a liquid of a solvent 32 in a solvent bottle 3 after being passed through a pressure adjusting apparatus 21, a purge resistance 23, a purge tube 34, and a porous filter 35. At this time, a slight amount of the helium gas is released through a vent valve 24 from a bypass resistance 26 installed in this apparatus. On the completion of degassing, the vent valve 24 is closed. Even in the case an inlet valve 11 is closed while the vent valve 24 being erroneously closed after bubbling, the pressure of the inside of the solvent bottle 3 is gradually released through the bypass resistance 26, a purge resistance, and a leak resistance 25, so that backward flow of the solvent does not occur.

公开(公告)号：JPH10300666A

公开(公告)日：1998-11-13

申请号：JP11167197

申请日：1997-04-30

Applicant: SHIMADZU CORP

Inventor： FUJITA TAKESHI

IPC: G01N21/03 ,  G01N21/41

Abstract: PROBLEM TO BE SOLVED: To eliminate the tailing of a peak being generated due to 'stagnation' of a fluid stagnation part even in a rectangular flow cell where a fluid to be measured flows into and out of a side surface. SOLUTION: In a photodetector for measuring optical characteristics by applying light, a restrictor 9 in a shape along the flow (flow line) of a fluid in a flow cell 6 is arranged at the front and rear of the rectangular flow cell 6 or either the front or the rear, thus measuring only the flow part of a fluid that can be substituted quickly. The shape along the flow (flow line) of the fluid has a basic shape where both sides are curved in the longitudinal direction for avoiding a corner part and a wall surface part in the flow cell, namely a stagnation part. Further, the loss in the quantity of light can be suppressed by forming upper and lower edges roundly for improved effect.

公开(公告)号：JPH05133808A

公开(公告)日：1993-05-28

申请号：JP32369891

申请日：1991-11-12

Applicant: SHIMADZU CORP

Inventor： FUJITA TAKESHI

IPC: G01J3/18 ,  G01N21/27

Abstract: PURPOSE:To perform spectral analyses in all wavelength regions without using a mechanism for inserting/removing a filter depending upon a wavelength region, whereas the spectroscope using a diffraction grating requires the insertion of a filter for removing secondary light depending upon the wavelength region at the time of spectral analysis. CONSTITUTION:The light emitted from a spectroscope 1 is made incident to a sample 2 and the light from the sample is separated into two luminous fluxes. Therefore, a secondary light removing filter 6 is provided in one luminous flux only and the luminous fluxes are respectively received with photodetectors 5 and 7 and, at the same time, the output of either one of the photodetectors 5 and 7 is introduced to a photometry circuit through a change-over switch 10.

公开(公告)号：JPH0335129A

公开(公告)日：1991-02-15

申请号：JP17071789

申请日：1989-06-30

Applicant: SHIMADZU CORP

Inventor： FUJITA TAKESHI

IPC: G01J3/10 ,  G01N21/01

Abstract: PURPOSE:To obtain light which has large light emission intensity over a wide wavelength range by making light which has a light emission spectrum matching reflection characteristics incident on the reflecting surface side of a half-mirror and making light which has a complementary light emission spectrum from the other surface side incident. CONSTITUTION:One surface of a glass substrate 2 is coated with a wavelength- selective filter to form the half-mirror 1. Light emitted by a lamp 4 is converged by a lens 5 and made incident on the mirror 1 and only light of =400nm is transmitted in the slit direction. Consequently, light reaching the slit 6 consists of light =400nm of a tungsten lamp and has an intense light emission spectrum from short wavelength to long wavelength.

公开(公告)号：JP2000065796A

公开(公告)日：2000-03-03

申请号：JP23249698

申请日：1998-08-19

Applicant: SHIMADZU CORP

Inventor： FUJITA TAKESHI

IPC: G01N27/447 ,  G01N37/00

Abstract: PROBLEM TO BE SOLVED: To make the whole of a separation flow channel measurable and make of sensitivity of the necessary part on the separation flow channel enhancible by moving laser beam to scan the desired range of the separation flow channel. SOLUTION: On the one surface side of a glass plate 4 to which a linear separation flow channel 2 is formed, the monochromatic laser beam from a laser beam source is condensed to a mirror 16 by a condensing lens 14. The mirror 16 fixed to a rotary shaft 20 is repeatedly rotated at a designated angle by the operation of a mirror driving part 18 and the reflected laser beam irradiates the predetermined range of the separation flow channel 2 while scaning the predetermined range thereof. The photodiode 12 provided on the other surface of the glass plate 4 detects the beam from the separation flow channel 2 over the predetermined range. If the mirror 16 is repeatedly rotated to scan the whole of the separation flow channel several times, quantity of beam becomes insufficient and noise becomes large but the rough position of a peak is cleared and the separation state of a sample can be measured. Next, when a scanning range is made small and the mirror 16 is rotated, sufficient quantity of light is obtained within the scanning range and peripheral noise is reduced to accurately detect the peak.

公开(公告)号：JPH08129003A

公开(公告)日：1996-05-21

申请号：JP29229894

申请日：1994-10-31

Applicant: SHIMADZU CORP

Inventor： SAITO KATSUHIKO ,  FUJITA TAKESHI

IPC: G01N21/05 ,  G01N30/74

Abstract: PURPOSE: To suppress the fluctuations of the base line of a chromatogram while using a flow cell composed of a resin. CONSTITUTION: A cylindrical cavity part 14 is formed in a cell body 12 made of an opaque resin and a moving phase into which a sample is injected is allowed to flow through the cavity part and light is projected on the moving phase. The diameter of the cavity part 14 is changed in size on the inlet and outlet sides of projection light to make the diameter of an incident light path smaller than that of an emitting light path to prevent that light is refracted in the liquid within a flow cell to impinge against a wall surface.