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1. 发明专利

JP2000180352A TRACE-SAMPLE CONTAINER FOR SPECTROPHOTOMETER 失效
公开(公告)号：JP2000180352A
公开(公告)日：2000-06-30
申请号：JP35094098
申请日：1998-12-10
申请人： HITACHI LTD , NAKA INSTR KK
发明人： MINAGAWA SADAO , TAIJI YOSHIO
IPC分类号： G01N1/00 , G01N21/03 , G01N21/27
摘要： PROBLEM TO BE SOLVED: To quantitatively determine a sample in an ultratrace amount by using a spectrophotometer with good reproducibility and with ultrahigh accuracy without being influenced by a remaining liquid, by a method wherein the internal volume of a sample container which holds a sample to be measured is set in a specific range. SOLUTION: A transparent quartz translucent plate 2 on which a black mask 1 is pasted, a black quartz cell block 3, a transparent quartz translucent plate 4 and a handle 6 which comprises a through hole 5 and which uses opaque quartz constitute a sample container. The black mask 1 may be formed on the translucent plate 4. The respective components 1 to 6 are fused and bonded in such a way that an optical axis is situated in the center, and they form an ultratrace-amount sample container single-view drawing 8 indicated as a single-view drawing, A slanted line part 10 which is indicated in the enlarged figure 9 of the cell block 3 is a part which is filled with a sample, i.e., a part which decides the volume of the sample. The length of a liquid layer in the enlarged figure 9 is designated as A, the width of the liquid layer is designated as B, and the height of the liquid layer is designated as C. Then, the volume which is filled with the sample is expressed as A×B×C, and its internal volume is set at 1 to 50 μL.

2. 发明专利

JPH0554902B2 失效
公开(公告)号：JPH0554902B2
公开(公告)日：1993-08-13
申请号：JP17646686
申请日：1986-07-26
申请人： HITACHI LTD
发明人： MURAKOSHI TAKEO , MINAGAWA SADAO
IPC分类号： G01M11/00 , G01J3/08 , G01J3/42 , G01N21/25 , G01N21/27

3. 发明专利

JPH0518053B2 失效
公开(公告)号：JPH0518053B2
公开(公告)日：1993-03-10
申请号：JP18615984
申请日：1984-09-04
申请人： HITACHI LTD
发明人： MINAGAWA SADAO
IPC分类号： G01N21/27 , H01L21/66

4. 发明专利

JPS63145925A SPECTROPHOTOMETER 失效
公开(公告)号：JPS63145925A
公开(公告)日：1988-06-18
申请号：JP29325786
申请日：1986-12-09
申请人： HITACHI LTD
发明人： MINAGAWA SADAO
IPC分类号： G01J3/10
摘要： PURPOSE:To provide a smaller size and longer life light source, by using a strobo lamp as a light source to make the timing of lighting the strobe lamp synchronize with a sample measuring operation. CONSTITUTION:A strobe lamp 3 which allows instantaneous lighting thereof can uses a semiconductor battery or the like to provide a smaller size power source. According to an output of a multivibrator circuit 18 driven by a measurement start key 1, a semiconductor switch 9 is turned to a reference side detector 16 or a sample side detector 17 and detection signals of both the detectors are taken into a data processing section 20 to measure spectroscopic characteristic. On the other hand, the strobe lamp 3 is lighted by a power source 2. But as the lighting is made by the key 1, the strobo lamp is lighted intermittently only when required for measurement thereby achieving a longer life thereof as light source.

5. 发明专利

JPS6325532A SPECTROPHOTOMETER 失效
公开(公告)号：JPS6325532A
公开(公告)日：1988-02-03
申请号：JP16803886
申请日：1986-07-18
申请人： HITACHI LTD
发明人： MINAGAWA SADAO
IPC分类号： G01J3/42 , G01N21/25 , G01N21/27
摘要： PURPOSE:To enable repeated measurement of several material to be performed continuously, by arranging a sample chamber to insert several samples, loaded in a sample holder, into a spectroscopic path with a sample holder driving section. CONSTITUTION:In a sample chamber 2, a sample holder 4 and a sample holder driving section 5 set on a sample holder fixing plate 3 are controlled via a computer control section 13 and a mechanism control section 6 by a command from a function part 15. In other words, holders 4 No.1-6 stop sequentially in an optical path 7 by a time length as specified by the function part 15 while light passing corresponding to a sample to be measured set on the holders 4 is converted with a detector 8 into electricity, which is amplified 9 and converted 12 into digital from analog to be introduced to a CPU 10 via a bus line 11. Moreover, the results are displayed 16 and recorded 17 via an I/O interface 14. Upon the end of measurement for the holders 4 No.1-6, the holders 4 are reversed back to the position No.1 thereby making the same measurement ready again.

6. 发明专利

JP2000304615A SPECTROPHOTOMETER 失效
公开(公告)号：JP2000304615A
公开(公告)日：2000-11-02
申请号：JP11318399
申请日：1999-04-21
申请人： HITACHI LTD , NAKA INSTR KK
发明人： SUGIURA YOSHIO , MINAGAWA SADAO
IPC分类号： G01J3/36 , G01J3/18 , G01N21/27
摘要： PROBLEM TO BE SOLVED: To improve the resolution and sensitivity by allowing a contact angle of each cut filter to be an optical adhesion, and substituting a cut filter for a protective glass in front of a multi-channel detector, for removing the stray light incident in the multi-channel detector. SOLUTION: A white light 2 passes through a sample and separated into monochromatic lights 7 with a diffraction grating 6. A plurality of cut filters 8a, 8b, and 8c are used for the monochromatic lights 7 while corresponding to a wavelength range, and the contact surface between the cut filters is optically bonded to prevent turbulence of the monochromatic light 7 due to reflection on each end surface of the filters or deformation in optical axis. Related the shape of contact surface, it is fixed to the install position of a protective glass at the upper part of a multi-channel detector case 10 for parallelism to the optical axis of the single light 7. The cut filters 8a, 8b, and 8c are sufficiently thick.

7. 发明专利

JPH0434690B2 失效
公开(公告)号：JPH0434690B2
公开(公告)日：1992-06-08
申请号：JP4086584
申请日：1984-03-02
申请人： HITACHI LTD
发明人： AKITOMO NOBUO , MINAGAWA SADAO
IPC分类号： G01J3/04 , G01J3/06

8. 发明专利

JPH02221823A PHOTOMETER 失效
公开(公告)号：JPH02221823A
公开(公告)日：1990-09-04
申请号：JP4025389
申请日：1989-02-22
申请人： HITACHI LTD
发明人： KOJIMA MASAYA , MINAGAWA SADAO
IPC分类号： G01J3/02 , G01J3/10 , G01J3/42 , G01J5/06 , G01N21/31
摘要： PURPOSE:To improve the sensitivity and S/N in the near infrared range by providing a lead sulfide detector, an electron thermal element, and a temperature sensing element and holding the lead sulfide detector at constant temperature with a temperature controller. CONSTITUTION:Light in the ultraviolet visible light range is detected by a photoelectron multiplier tube 1, whose output current is converted 50 into a voltage. Further, light in the near infrared range is detected by the lead sulfide detector 2, whose output voltage is AC-amplified 51. Further, each detector 2 outputs a signal at all times and a microcomputer 53 switches output signals from detectors 2 so that the multiplier tube 1 or detectors 2 is selected according to a wavelength range to be measured. Then the output signal of the selected detector 2 is A/D-converted 52 and processed by the computer 53. Further, the temperature detected by the temperature sensing element 32 is compared with reference temperature by a comparator in the temperature controller and electric power supplied to the electron thermal element 31 according to the comparison output to perform temperature control to the constant temperature.

9. 发明专利

JPH01123133A SPECTROPHOTOMETER 失效
公开(公告)号：JPH01123133A
公开(公告)日：1989-05-16
申请号：JP28104487
申请日：1987-11-09
申请人： HITACHI LTD
发明人： MINAGAWA SADAO , TOYAMA YOSHIO , KOJIMA MASAYA
IPC分类号： B01F13/08 , G01N1/36 , G01N21/01 , G01N21/25
摘要： PURPOSE:To improve measuring accuracy, by equally distributing a plurality of magnets on the circumference of a disk, and positioning a plurality of containers, which house samples and small magnet pieces, at slant upper parts from the circumference, which connects the centers of the magnets, and turning each small magnet piece. CONSTITUTION:Eight magnets 6 are attached to a turning disk 5, which is turned with a motor 1. Sample containers 7 are provided on a sample container holder 8 and moved to the direction of a measuring light path sequentially with a motor 9. A small magnet piece 14 is contained in each container 7. A plurality of the containers 7, which contain samples and the magnets 14, are positioned at the slant upper parts of the magnets 6. The disk 5 is turned. Each magnet 14 is turned by the mutual action of the magnetic lines of forces of the magnet 6 and the magnet 14. Thus the sample is agitated. Therefore, the reacting samples among the samples are not sedimented during the simultaneous measurement of many samples. Thus the measuring accuracy can be improved.

10. 发明专利

JPS599525A Temperature controlling device 失效
标题翻译：温度控制装置
公开(公告)号：JPS599525A
公开(公告)日：1984-01-18
申请号：JP11673282
申请日：1982-07-07
申请人： Hitachi Ltd
发明人： KANEKO NORIO , MINAGAWA SADAO
IPC分类号： G01J5/10 , G05D23/20 , G05D23/24
CPC分类号： G05D23/24 , G05D23/1919
摘要： PURPOSE:To make it possible to perform highly stabilized temperature control, by utilizing functional relationship of the temperature and the resistance value of a temperature sensitive element, and making it possible to perform control and detection by one element. CONSTITUTION:When the value of an arbitrary temperature is set by an input part 5, the resistance value corresponding to the temperature value is computed by a function operator 6. Said resistance value and the actual resistance value of a thermistor 4 are inputted to a differential operator 7. A current is supplied to a Peltier element 3 through a control circuit 8 so that the difference between said resistance values becomes zero. The actual resistance value of the thermistor 4 is obtained by a constant current circuit 9 and an A/D converter 10, which converts the voltage output of the circuit 9 into a digital quantity. A feedback loop of l4 9 10 7 8 4 is operated until the balance to the preset temperature is obtained. The resistance value of the thermistor 4 ( the output of the A/D converter 10) is directly converted into the temperature by a function operator 11. Thus the highly stabilized temperature control can be performed.
摘要翻译：目的：通过利用温度和温度敏感元件的电阻值的功能关系，可以进行高度稳定的温度控制，并且可以通过一个元件进行控制和检测。构成：当通过输入部5设定任意温度的值时，通过功能运算器6计算与温度值对应的电阻值。将热敏电阻4的所述电阻值和实际电阻值输入到差分电流通过控制电路8提供给珀耳帖元件3，使得所述电阻值之间的差变为零。热敏电阻4的实际电阻值是通过将电路9的电压输出转换为数字量的恒流电路9和A / D转换器10来获得的。操作l4 9 10 7 8 4的反馈回路，直到获得与预设温度的平衡为止。热敏电阻4的电阻值（A / D转换器10的输出）通过功能运算器11直接转换为温度。因此，可以进行高度稳定的温度控制。

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