JPS63182530A - Light source for spectrophotometer - Google Patents
Light source for spectrophotometerInfo
- Publication number
- JPS63182530A JPS63182530A JP1539887A JP1539887A JPS63182530A JP S63182530 A JPS63182530 A JP S63182530A JP 1539887 A JP1539887 A JP 1539887A JP 1539887 A JP1539887 A JP 1539887A JP S63182530 A JPS63182530 A JP S63182530A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- discharge tube
- light
- spectrophotometer
- emits light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 230000004907 flux Effects 0.000 claims abstract description 8
- 229910052805 deuterium Inorganic materials 0.000 abstract description 22
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 abstract description 21
- 229910052736 halogen Inorganic materials 0.000 abstract description 20
- 150000002367 halogens Chemical class 0.000 abstract description 20
- 239000010453 quartz Substances 0.000 abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 13
- 239000002131 composite material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001975 deuterium Chemical class 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は分光光度計用光源に係り、特にスペクトルアナ
ライザー、発光現象測定用マルヂャンネル分光光度計、
高速液体クロマトグラフ用マルヂャンネル分光光度計等
に使用される分光光度計用光源に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a light source for a spectrophotometer, and particularly to a spectrum analyzer, a multichannel spectrophotometer for measuring luminescence phenomena,
The present invention relates to a light source for a spectrophotometer used in a multichannel spectrophotometer for high-performance liquid chromatography.
［従来の技術］
波長領域２００ ｎｍ〜９００ ｎｍ、すなわち紫外領
域、可視領域及び近赤外領域をカバーする従来の分光光
度計用光源では、第３図に示す如く、＝１ミに紫外領域
を発光する重水素放電管ＩＯと、主に可視領域及び近赤
外領域を発光するタングステンランプ又はハロゲンラン
プ１２とを配設し、凹面鏡１３を回転移動させて重水素
放電管ｌＯ又はノ＼ロゲンランプ１２の放射光を交互に
分光器Ｉ４のスリット１６へ収束させるようになってい
た。[Prior Art] A conventional light source for a spectrophotometer that covers a wavelength range of 200 nm to 900 nm, that is, an ultraviolet region, a visible region, and a near-infrared region, has an ultraviolet region of 1 μm as shown in FIG. A deuterium discharge tube IO that emits light and a tungsten lamp or halogen lamp 12 that emits light mainly in the visible region and near-infrared region are installed, and the concave mirror 13 is rotated to move the deuterium discharge tube IO or the halogen lamp 12. The emitted light is alternately focused on the slit 16 of the spectrometer I4.
したがって、紫外領域から近赤外領域までの全領域にわ
たって、かつ同時に、収束光を分光器１４へ供給するこ
とができず、しかも、凹面鏡１３を回転移動させる必要
かあるため構成が複雑であった。Therefore, it is not possible to simultaneously supply convergent light to the spectrometer 14 over the entire range from the ultraviolet region to the near-infrared region, and the configuration is complicated because it is necessary to rotate the concave mirror 13. .
前記波長領域を同時にカバーする光源としては、第４図
に示す如く、貫通型の特殊な重水素放電管１０Ａとハロ
ゲンランプ１２との間にレンズ１７を配設して、ハロゲ
ンランプ１２の放射光を重水素放電管１０Ａの中心に収
束させ、重水素放電管１０Δとスリット１６との間にレ
ンズ１８を配設して、重水素放電管１０Ａとハロゲンラ
ンプ１２の放射光をスリブ）１６に収束させる構成のも
のがある。As a light source that simultaneously covers the wavelength range, a lens 17 is disposed between a special penetrating deuterium discharge tube 10A and a halogen lamp 12, as shown in FIG. A lens 18 is arranged between the deuterium discharge tube 10Δ and the slit 16 to converge the emitted light from the deuterium discharge tube 10A and the halogen lamp 12 onto the slit 16. There is a configuration that allows you to do so.
しかし、ハロゲンランプ１２、レンズ】７、重水素放電
管１０Ａ及びレンズ１８を１列に配設する必要があるた
め、装置が大型となり、しかもレンズを使用せざるを得
ないため、収差が生ずる。However, since it is necessary to arrange the halogen lamp 12, lens 7, deuterium discharge tube 10A, and lens 18 in one row, the apparatus becomes large and, furthermore, aberrations occur because lenses have to be used.
また、二重電極を設けて１個のランプで紫外領域から近
赤外領域までをカバーする光源もあるが、紫外領域を発
光する光源の温度ドリフトが大きく、特に、外気温の変
動に基づく温度ドリフトか大きい。しかも、このような
ランプは高価かつ短寿命である。In addition, there are light sources that are equipped with dual electrodes to cover from the ultraviolet region to the near-infrared region with a single lamp, but light sources that emit light in the ultraviolet region have large temperature drifts, especially when the temperature changes due to changes in outside temperature. Drift or big. Moreover, such lamps are expensive and short-lived.
本発明の目的は、上記問題点に鑑み、２個のランプの合
成光束を１点に収束させることができ、しかも装置を小
型化できる分光光度計用光源を提供することにある。SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a light source for a spectrophotometer that can converge the combined luminous flux of two lamps to a single point and that can reduce the size of the device.
また、本発明の他の目的は、簡単な構成で温度ドリフト
の発生を防止することが可能な分光光度計用光源を提供
することにある。Another object of the present invention is to provide a light source for a spectrophotometer that can prevent temperature drift with a simple configuration.
［問題点を解決するための手段］
本第１発明に係る分光光度計用光源では、主に第１波長
領域を発光する第１光源と、ハーフミラ−と、
該ハーフミラ−面に対して該第１光源と略対称な位置に
配設され、主に第２波長領域を発光する第２光源と、
該第１光源と該第２光源の放射光の一方が該ノ１−フミ
ラーにより反射され他方が該ノ１−フミラーを透過して
形成される共通光路中に配設され、′両放射光の合成光
束を分光光度計側へ収束させる光学系と、を有すること
を特徴としている。[Means for Solving the Problems] The light source for a spectrophotometer according to the first invention includes: a first light source that mainly emits light in a first wavelength region; a half mirror; a second light source disposed at a position substantially symmetrical to the first light source and emitting mainly light in a second wavelength region; one of the emitted light from the first light source and the second light source is reflected by the second light source; is disposed in a common optical path formed by passing through the nof mirror, and is characterized by having an optical system that converges a combined light beam of both emitted lights toward the spectrophotometer.
また、本第２発明に係る分光光度計用光源では、主に紫
外領域を発光する放電管と、
ハーフミラ−と、
該ハーフミラ−面に対して該放電管と略対称な位置に配
設された白熱ランプと、
開口部が設けられ、該開口部に該ハーフミラ−が被着さ
れ、かつ該白熱ランプを被う遮熱手段と二を有すること
を特徴としている。Further, the light source for a spectrophotometer according to the second invention includes: a discharge tube that emits light mainly in the ultraviolet region; a half mirror; and a half mirror disposed at a position substantially symmetrical to the discharge tube with respect to the half mirror surface The present invention is characterized in that it includes an incandescent lamp, and a heat shielding means that is provided with an opening, the half mirror is attached to the opening, and covers the incandescent lamp.
［実施例］
図面に基づいて本発明の好適な実施例を説明する。第２
図には、本第１発明の実施例が示されている。[Example] A preferred example of the present invention will be described based on the drawings. Second
The figure shows an embodiment of the first invention.
ハーフミラ−としての石英板２０の面に対して、重水素
放電管１０とハロゲンランプ１２七が対称な位置に配設
されている。この重水素放電管１０の放射光の１部は石
英板２０を透過し、／％ロゲンランブ１２の放射光の１
部は２０で反射され、これにより共通光路２１が形成さ
れる。この共通光路２１中に凹面鏡２２が配設されてお
り、重水素放電管ｌＯとハロゲンランプ１２の両放射光
による合成光束が分光器１４のスリット１６の位置に収
束される。A deuterium discharge tube 10 and a halogen lamp 127 are arranged symmetrically with respect to the surface of a quartz plate 20 serving as a half mirror. A part of the emitted light from this deuterium discharge tube 10 is transmitted through the quartz plate 20, and one part of the emitted light from the /%rogen lamp 12 is transmitted through the quartz plate 20.
portion is reflected at 20, thereby forming a common optical path 21. A concave mirror 22 is disposed in this common optical path 21, and the combined light beam from both the deuterium discharge tube lO and the halogen lamp 12 is converged at the slit 16 of the spectroscope 14.
この重水素放電管１０は主に紫外領域を発光し、ハロゲ
ンランプ１２は主に可視領域及び近赤外領域を発光する
ので、合成光束は紫外領域から近赤外領域の全領域とな
る。重水素放電管１０から石英板２０−へ照射される紫
外線は、その約９０％が英板２０を透過し、ハロゲンラ
ンプ１２から石英板２０へ照射される可視光線及び近赤
外線は、その２０〜３０％が石英板２０により反射され
るので、分光光度計用光源としては充分である。Since the deuterium discharge tube 10 mainly emits light in the ultraviolet region, and the halogen lamp 12 mainly emits light in the visible region and near-infrared region, the combined luminous flux covers the entire region from the ultraviolet region to the near-infrared region. Approximately 90% of the ultraviolet rays irradiated from the deuterium discharge tube 10 to the quartz plate 20- transmit through the quartz plate 20, and approximately 90% of the visible light and near-infrared rays irradiated from the halogen lamp 12 to the quartz plate 20- Since 30% of the light is reflected by the quartz plate 20, it is sufficient as a light source for a spectrophotometer.
重水素放電管ｌＯとハロゲンランプ１２とがハーフミラ
−２０の面に対し対称位置に配設されているので、両者
の合成光束は、二重電極を用いて重水素放電管１０とハ
ロゲンランプ１２を一体構成した場合と同一になる。ま
た、好ましいことに、熱を放射するハロゲンランプ１２
と光度が温度の影響受けやすい重水素放電管ＩＯとが離
間して配設されているので、後述する如く、温度ドリフ
トの発生を防止する構成が簡単となる。Since the deuterium discharge tube 1O and the halogen lamp 12 are disposed at symmetrical positions with respect to the surface of the half mirror 20, the combined luminous flux of the two is generated by combining the deuterium discharge tube 10 and the halogen lamp 12 using double electrodes. It will be the same as when configured as one. Also preferably, a halogen lamp 12 that emits heat.
Since the deuterium discharge tube IO and the deuterium discharge tube IO whose luminous intensity is easily affected by temperature are arranged apart from each other, the structure for preventing the occurrence of temperature drift becomes simple, as will be described later.
本実施例では、重水素放電管１０とハロゲンランプ１２
の合成光束を凹面鏡２２により反射させる構成となって
いるので、重水素放電管１０、ハロゲンランプ１２、石
英板２０及び凹面鏡２２により構成される装置が小型と
なる。しかも、レンズを用いていないので、収差の問題
が生じない。In this embodiment, a deuterium discharge tube 10 and a halogen lamp 12 are used.
Since the combined light beam is reflected by the concave mirror 22, the device constituted by the deuterium discharge tube 10, the halogen lamp 12, the quartz plate 20, and the concave mirror 22 can be made small. Furthermore, since no lenses are used, there is no problem with aberrations.
次に、本第２発明の実施例を第１図に基づいて説明する
。なお、第２図と同一構成部分については、同一符号を
付してその説明を省略する。Next, an embodiment of the second invention will be described based on FIG. Components that are the same as those in FIG. 2 are given the same reference numerals and their explanations will be omitted.
重水素放電管１０は、密閉されたケース２４内に収容さ
れており、ハロゲンランプＩ２により過熱された周囲の
空気と熱的に遮断されているので、重水素放電管１０の
温度ドリフトが防止されて重水素放電管１０の発光ｍが
一定となる。しかも、ハロゲンランプ１２及びケース２
４がケース２６内に収容されており、ケース２４内への
外気温の影響が更に低減される。The deuterium discharge tube 10 is housed in a sealed case 24, and is thermally isolated from the surrounding air heated by the halogen lamp I2, so that temperature drift of the deuterium discharge tube 10 is prevented. Therefore, the light emission m of the deuterium discharge tube 10 becomes constant. Moreover, the halogen lamp 12 and the case 2
4 is housed in the case 26, and the influence of outside temperature on the inside of the case 24 is further reduced.
ケース２６の」二面には複数のスリット２７が設けられ
、この位置にファン２８が取り付けられており、排熱に
より、ケース２６内の温度上昇が防止される。A plurality of slits 27 are provided on two sides of the case 26, and a fan 28 is attached to these positions to prevent the temperature inside the case 26 from rising due to exhaust heat.
石英板２９は、ケース２４に設けられた開口２９に被着
されている。The quartz plate 29 is attached to an opening 29 provided in the case 24.
また、平面鏡３０は、その両端が矩形板３２へ回転角を
調整可能に固着され、この矩形板３２がＬ字形ブラケッ
ト３３の両端面に固着され、ブラケット３３の一面がケ
ース２６の底面に固着されている。 ケース２６と分光
器１４のケース３４とは、断熱材３５．３６を介して連
結されており、ハロゲンランプ１２からの放熱がケース
３４内へ伝達されるのを阻止している。また、ケース２
６とケース３４の対向面には、それぞれ穴３８．４０が
穿設され、この部分に接続管４２が介装されてケース２
６内とケース３４内とが連通されている。凹面鏡２２及
び平面鏡３０により反射された合成光束は、この接続管
４２内を通ってケース３４内に設けられたスリット１６
の位置に収束される。液体クロマトグラフの場合には、
スリットＩ６の第１図右側に、フローセルを備えた光検
出器が配設され、このスリットがスリットＩ６と対面さ
れる。Further, both ends of the plane mirror 30 are fixed to a rectangular plate 32 so that the rotation angle can be adjusted, the rectangular plate 32 is fixed to both end surfaces of an L-shaped bracket 33, and one surface of the bracket 33 is fixed to the bottom surface of the case 26. ing. The case 26 and the case 34 of the spectrometer 14 are connected via heat insulating materials 35 and 36 to prevent heat radiation from the halogen lamp 12 from being transmitted into the case 34. Also, case 2
Holes 38 and 40 are formed in the facing surfaces of the case 6 and the case 34, respectively, and a connecting pipe 42 is inserted into these portions to connect the case 2.
The inside of the case 6 and the inside of the case 34 are communicated with each other. The combined light beam reflected by the concave mirror 22 and the plane mirror 30 passes through the connecting tube 42 and passes through the slit 16 provided in the case 34.
It is converged at the position of . In the case of liquid chromatograph,
A photodetector equipped with a flow cell is disposed on the right side of the slit I6 in FIG. 1, and this slit faces the slit I6.
ファン２８を駆動することにより空気流が平面鏡３０と
凹面鏡２２との間を通って開口２７側へ向かうが、ブラ
ケット３２の上端部が、これと凹面鏡２２との間を通る
気流の幅を狭めるので、平面鏡３０の表面へこの気流が
当たるのを阻止でき、平面鏡３０の表面へ埃が付着する
のを防止できる。By driving the fan 28, the airflow passes between the plane mirror 30 and the concave mirror 22 toward the opening 27, but the upper end of the bracket 32 narrows the width of the airflow that passes between this and the concave mirror 22. This air flow can be prevented from hitting the surface of the plane mirror 30, and dust can be prevented from adhering to the surface of the plane mirror 30.
なお、上記実施例では合成光束を凹面鏡２２で収束させ
る場合を説明したが、本発明はこれに限定されず、凹面
鏡２２の代わりにレンズを用い又は凹面鏡２２とレンズ
の両方を用いる構成であってらよい。In addition, although the case where the combined light beam is converged by the concave mirror 22 has been described in the above embodiment, the present invention is not limited to this, and it is possible to use a lens in place of the concave mirror 22 or a configuration in which both the concave mirror 22 and the lens are used. good.
し発明の効果］
本第１発明及び第２発明に係る分光光度計用光源では、
主に第１波長領域を発光する第１光源と、主に第２波長
領域を発光する第２光源とを、ハーフミラ−而に対して
略対称位置に配設しているので、第１光源と第２光源を
二重電極により一体構成した場合と同様の合成光束が得
られ、切換操作をすることなくこの合成光束を光学系に
より分光光度計側の１点へ収束させることができ、しか
も光源装置を小型化できるという優れた効果がある。[Effects of the Invention] In the light sources for spectrophotometers according to the first and second inventions,
Since the first light source that mainly emits light in the first wavelength range and the second light source that mainly emits light in the second wavelength range are arranged at substantially symmetrical positions with respect to the half mirror, the first light source A composite light beam similar to that obtained when the second light source is integrally configured with double electrodes can be obtained, and the optical system can converge this composite light beam to a single point on the spectrophotometer side without performing a switching operation. This has the excellent effect of making the device smaller.
本第２発明では、白熱ランプと放電管を二重電極により
一体構成した場合と同様の合成光束が得られるにも拘わ
らず、両者がハーフミラ−を介して離間しているので、
開口部にハーフミラ−が被着された遮熱手段で放電管を
被うことができ、簡単な構成で、」−記効果に加え、放
電管の周囲温度を略一定に保つことかでき、これにより
温度ドリフトの発生を防止して放電管の光度を一定に保
つことができるという優れた効果もある。In the second aspect of the invention, although a combined luminous flux similar to that obtained when an incandescent lamp and a discharge tube are integrated with a double electrode is obtained, both are separated by a half mirror.
The discharge tube can be covered with a heat shielding means with a half mirror attached to the opening, and with a simple configuration, in addition to the above effects, the ambient temperature of the discharge tube can be kept approximately constant. This also has the excellent effect of preventing the occurrence of temperature drift and keeping the luminous intensity of the discharge tube constant.
第１図は本第２発明の実施例の構成を示す図、第２図は
本第１発明の実施例の構成を示す図、第３図及び第４図
は従来例の構成を示す図である。
ＩＯ＝重水素放電管 １２．ハロゲンランプ１４：分
光器 １６・スリット２０：ハーフミラ−とし
ての石英板
２１・共通光路
２２、光学系としての凹面鏡
２４、遮熱手段としてのケース
２６・ケース
２８：ファン ２９ 開口
３６、断熱材
代理人 弁理士 松 本 眞 吉
第１図FIG. 1 is a diagram showing the configuration of an embodiment of the second invention, FIG. 2 is a diagram showing the configuration of the embodiment of the first invention, and FIGS. 3 and 4 are diagrams showing the configuration of a conventional example. be. IO=deuterium discharge tube 12. Halogen lamp 14: Spectrometer 16/Slit 20: Quartz plate 21 as a half mirror/Common optical path 22, Concave mirror 24 as an optical system, Case 26/Case 28 as heat shielding means: Fan 29 Opening 36, Heat insulating agent Patent Attorney Masakichi Matsumoto Figure 1
Claims (4)
配設され、主に第２波長領域を発光する第２光源と、 該第１光源と該第２光源の放射光の一方が該ハーフミラ
ーにより反射され他方が該ハーフミラーを透過して形成
される共通光路中に配設され、両放射光の合成光束を分
光光度計側へ収束させる光学系と、を有することを特徴
とする分光光度計用光源。(1) a first light source that mainly emits light in a first wavelength region; a half mirror; disposed at a position approximately symmetrical to the first light source with respect to the half mirror surface; and a first light source that mainly emits light in a second wavelength region; a second light source disposed in a common optical path formed by one of the emitted light from the first light source and the second light source being reflected by the half mirror and the other being transmitted through the half mirror; A light source for a spectrophotometer, comprising: an optical system that converges a combined luminous flux of the above onto a spectrophotometer side.
請求の範囲第１項記載の分光光度計用光源。(2) The light source for a spectrophotometer according to claim 1, wherein the optical system is a concave mirror.
あり、前記第２光源は主に可視領域及び近赤外領域を発
光する白熱ランプであることを特徴とする特許請求の範
囲第２項記載の分光光度計用光源。(3) The first light source is a discharge tube that emits light mainly in the ultraviolet region, and the second light source is an incandescent lamp that mainly emits light in the visible region and near-infrared region. 2. The light source for a spectrophotometer according to item 2.
設された白熱ランプと、 開口部が設けられ、該開口部に該ハーフミラーが被着さ
れ、かつ該白熱ランプを被う遮熱手段と、を有すること
を特徴とする分光光度計用光源(4) A discharge tube that emits light mainly in the ultraviolet region, a half mirror, an incandescent lamp disposed at a position approximately symmetrical to the discharge tube with respect to the half mirror surface, and an opening, the opening A light source for a spectrophotometer, comprising: a heat shielding means for covering the incandescent lamp; and a heat shielding means for covering the incandescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1539887A JPS63182530A (en) | 1987-01-26 | 1987-01-26 | Light source for spectrophotometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1539887A JPS63182530A (en) | 1987-01-26 | 1987-01-26 | Light source for spectrophotometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63182530A true JPS63182530A (en) | 1988-07-27 |
Family
ID=11887625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1539887A Pending JPS63182530A (en) | 1987-01-26 | 1987-01-26 | Light source for spectrophotometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63182530A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08297088A (en) * | 1995-04-27 | 1996-11-12 | Shimadzu Corp | Spectrophotometer |
| JP2002323726A (en) * | 2001-04-25 | 2002-11-08 | Mac Science Co Ltd | Radiographic image reader |
| JP2009008554A (en) * | 2007-06-28 | 2009-01-15 | Hitachi High-Technologies Corp | Spectrophotometer and liquid chromatography |
| JP2011069841A (en) * | 2011-01-07 | 2011-04-07 | Shimadzu Corp | Spectroscopic device |
| EP3540396A4 (en) * | 2016-11-14 | 2020-08-12 | Hamamatsu Photonics K.K. | Spectroscopic measurement device and spectrometry system |
| JP2020186966A (en) * | 2019-05-13 | 2020-11-19 | 河北ライティングソリューションズ株式会社 | Light source device and optical device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS636427A (en) * | 1986-06-27 | 1988-01-12 | Hitachi Ltd | Spectrophotometer for vltraviolet and visible regions |
-
1987
- 1987-01-26 JP JP1539887A patent/JPS63182530A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS636427A (en) * | 1986-06-27 | 1988-01-12 | Hitachi Ltd | Spectrophotometer for vltraviolet and visible regions |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08297088A (en) * | 1995-04-27 | 1996-11-12 | Shimadzu Corp | Spectrophotometer |
| JP2002323726A (en) * | 2001-04-25 | 2002-11-08 | Mac Science Co Ltd | Radiographic image reader |
| JP2009008554A (en) * | 2007-06-28 | 2009-01-15 | Hitachi High-Technologies Corp | Spectrophotometer and liquid chromatography |
| US7787120B2 (en) | 2007-06-28 | 2010-08-31 | Hitachi High-Technologies Corporation | Spectrophotometer and liquid chromatography system |
| JP4536754B2 (en) * | 2007-06-28 | 2010-09-01 | 株式会社日立ハイテクノロジーズ | Spectrophotometer and liquid chromatography |
| JP2011069841A (en) * | 2011-01-07 | 2011-04-07 | Shimadzu Corp | Spectroscopic device |
| EP3540396A4 (en) * | 2016-11-14 | 2020-08-12 | Hamamatsu Photonics K.K. | Spectroscopic measurement device and spectrometry system |
| JP2020186966A (en) * | 2019-05-13 | 2020-11-19 | 河北ライティングソリューションズ株式会社 | Light source device and optical device |
| WO2020230757A1 (en) * | 2019-05-13 | 2020-11-19 | 河北ライティングソリューションズ株式会社 | Light source device and optical device |
| US11927528B2 (en) | 2019-05-13 | 2024-03-12 | Kahoku Lighting Solutions Corporation | Light source device and optical device |
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