WO2014207809A1 - 屈折率測定装置 - Google Patents
屈折率測定装置 Download PDFInfo
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- WO2014207809A1 WO2014207809A1 PCT/JP2013/067270 JP2013067270W WO2014207809A1 WO 2014207809 A1 WO2014207809 A1 WO 2014207809A1 JP 2013067270 W JP2013067270 W JP 2013067270W WO 2014207809 A1 WO2014207809 A1 WO 2014207809A1
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- camera
- display screen
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- refractive index
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/206—Drawing of charts or graphs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/4133—Refractometers, e.g. differential
Definitions
- the present invention relates to a refractive index measuring apparatus that measures the refractive index of a sample by irradiating the sample with measurement light.
- a sample is placed in a V-shaped groove formed in a V block prism, and the sample is irradiated with measurement light via the V block prism.
- the measurement light transmitted through the sample can be detected by a detector, and the refractive index of the sample can be measured (for example, see Patent Document 1 below).
- part of the measurement light that is transmitted to the detector through the sample is separated by, for example, a beam splitter and guided to an eyepiece (not shown).
- a beam splitter When adjusting the position of the V block prism, the operator can perform the work while viewing the state of the measurement light by looking into the apparatus from the eyepiece.
- a camera is attached to the eyepiece to prevent light from entering the outside of the apparatus from the eyepiece, and the measurement light is imaged by the camera at the eyepiece so that an image captured by the camera during the measurement can be obtained.
- a configuration that can be observed is conceivable.
- it is necessary to provide a separate display unit for displaying an image captured by the camera which is costly and results in detection by the detector and the camera. Since the captured image is displayed on a separate display screen, there is a possibility that smooth observation cannot be performed.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a refractive index measurement apparatus that can observe the actual state of measurement light well during measurement without incurring costs. . It is another object of the present invention to provide a refractive index measuring apparatus that can perform measurement favorably.
- a refractive index measuring apparatus is a refractive index measuring apparatus that measures a refractive index of a sample by irradiating the sample with measurement light, and that detects a measurement light transmitted through the sample, and transmits the sample.
- Display processing for displaying in real time on one display screen a camera that captures the measured light, a graph representing the detection intensity of the measured light detected by the detector, and an image of the measured light captured by the camera And a section.
- the graph representing the detection intensity of the measurement light detected by the detector and the measurement light image captured by the camera are displayed in real time on one display screen. There is no need to provide a separate display unit for displaying the captured image, and costs are not incurred. Also, by confirming the captured image of the camera displayed in real time on one display screen together with the graph, the actual state of the measurement light can be observed well during measurement.
- V block prism when adjusting the position of the V block prism, it is possible to work while confirming the captured image of the camera displayed in real time on the display screen. In this way, by displaying the image captured by the camera on the display screen, it is not necessary to provide an eyepiece, so that light outside the apparatus enters from the eyepiece during measurement and affects the detection result by the detector. Can be prevented, and measurement can be performed satisfactorily.
- the measurement light can be measured well by checking the measurement light in real time with the graph. be able to.
- the refractive index measurement device may further include a scanning processing unit that performs scanning by changing an angle at which the measurement light emitted from the sample is received or an angle of the measurement light incident on the sample.
- the display processing unit displays the detection intensity of the detector, which changes with the scanning by the scanning processing unit, in real time on the display screen so as to draw continuously as a graph, and is captured by the camera. It is preferable that an image to be displayed is displayed in real time on the display screen so as to move with scanning.
- the display processing unit preferably displays an imaging switching key for starting or stopping display of an image captured by the camera on the display screen on the display screen.
- the display of the captured image of the camera on the display screen can be started or stopped by selecting the imaging switching key as necessary. Therefore, only when necessary, such as during measurement, the graph and the captured image of the camera can be displayed in real time on one display screen, and measurement can be performed satisfactorily.
- the display processing unit displays an enlarged display key for enlarging and displaying an image captured by the camera on the display screen on a separate screen.
- the captured image of the camera can be enlarged and displayed on a separate screen on the display screen by selecting an enlarged display key as necessary. Therefore, for example, when you want to adjust the position of the V block prism more accurately, or when you want to observe the degree of blurring of the measurement light more accurately, work well by checking the captured image of the camera with an enlarged display. It can be performed.
- the display processing unit display a stop key for stopping scanning by the scanning processing unit on the display screen.
- the scanning by the scanning processing unit can be stopped and the measurement can be stopped by selecting a stop key as necessary. Therefore, when you check the graph drawn continuously on the display screen as you scan and check the captured image by the camera at that time in real time on the same display screen, Since the measurement can be stopped immediately, the measurement can be performed better.
- the present invention it is not necessary to separately provide a display unit for displaying the captured image of the camera, and the cost is not increased.
- the present invention by confirming a captured image of a camera displayed in real time on a single display screen together with a graph, the actual state of measurement light can be observed well during measurement.
- light outside the apparatus is not incident from the eyepiece during measurement, and the degree of blurring of the measurement light can be confirmed in real time together with the graph. be able to.
- FIG. 1 is a schematic plan view showing a configuration example of a refractive index measuring apparatus according to an embodiment of the present invention.
- This refractive index measurement device is a V block type refractive index measurement device that measures the refractive index of a sample by irradiating the sample with measurement light via a V block prism 1.
- sample examples include glass, plastic, and liquid.
- the sample is placed in a V-shaped groove 11 formed in the V block prism 1 (FIG. 1 shows the groove 11 viewed from directly above), and the measurement light transmitted through the sample is detected.
- the refractive index of the sample can be measured by detecting with the instrument 2.
- a light source unit 3 for irradiating measurement light in addition to the V block prism 1 and the detector 2 described above, a light source unit 3 for irradiating measurement light, and a first optical system for guiding the measurement light from the light source unit 3 to the V block prism 1 4 and a second optical system 5 for guiding the measurement light transmitted through the V block prism 1 to the detector 2.
- the light source unit 3 is provided with a plurality of light sources 31.
- the light source 31 for example, a helium lamp, a hydrogen lamp, and a mercury lamp are used, and measurement light having different wavelengths such as a helium d line, a hydrogen C line, a hydrogen F line, a mercury e line, a mercury g line, and a mercury h line is used as the light source. Irradiation from the unit 3 is possible. Measurement light from the light source 31 is reflected by the mirror 32 and irradiated from the light source unit 3 in the horizontal direction.
- the mirror 32 is rotatable about a rotation shaft 321 extending in the vertical direction (the front-rear direction in FIG. 1), and the measurement light from the light source 31 corresponding to the rotation position of the mirror 32 is sent to the first optical system 4. Can lead.
- the light source 31 is not limited to the above type.
- the first optical system 4 includes a lens 41, mirrors 42, 43, and 44, an interference filter 45, a slit 46, a collimator lens 47, and the like. Measurement light from the light source unit 3 passes through the lens 41, is sequentially reflected by the mirrors 42 and 43, and then enters the interference filter 45.
- a plurality of interference filters 45 are provided, and only the measurement light (monochromatic light) having a specific wavelength corresponding to the interference filter 45 is inserted by inserting the interference filter 45 selected according to the type of the light source 31 into the optical path. Is transmitted through the interference filter 45 and guided to the mirror 44 side. The measurement light reflected by the mirror 44 passes through the slit 46, is converted into parallel light by the collimator lens 47, and then enters the V block prism 1. The measurement light incident on the V block prism 1 from one end face 12 passes through the sample placed in the V-shaped groove 11, passes through the V block prism 1 again, and passes through the V block prism 1 and the sample. The light is emitted from the other end face 13 at an angle corresponding to the difference in refractive index.
- the second optical system 5 includes mirrors 51 and 52, a telemeter lens 53, a beam splitter 54, and the like.
- the second optical system 5 is fixed to a disc 7 attached to a rotating shaft 61 of the motor 6.
- the mirrors 51 and 52 and the telemeter lens 53 are arranged in parallel to the rotation shaft 61 at a position eccentric with respect to the rotation shaft 61, and the mirror 52 and the beam splitter 54 are perpendicular to the rotation shaft 61.
- Each is fixed to the disc 7 so as to be lined up.
- the mirror 51 is arranged so that the reflection surface is inclined by 45 ° with respect to the incident direction of the measurement light, so that the measurement light reflected by the mirror 51 is converted into the traveling direction by 90 ° and guided to the telemeter lens 53. It is burned.
- the telemeter lens 53 condenses the measurement light from the V block prism 1 and guides it to the mirror 52, and the measurement light reflected by the mirror 52 passes through the beam splitter 54 and is fixed to the disk 7. Is detected.
- the mirror 51 and the telemeter lens 53 are arranged in a line in a direction perpendicular to the incident direction of the measurement light from the V block prism 1, and are integrated into a circle as the telemeter unit 50 at a position eccentric with respect to the rotation shaft 61. It is held on the plate 7. Therefore, by rotating the motor 6 and rotating the disk 7 around the rotation shaft 61, the position of the telemeter unit 50 relative to the V block prism 1 is changed (scanned), and the measurement light from the V block prism 1 is measured. Can be received from different angles and guided to the detector 2.
- the motor 6 is composed of a servo motor with an encoder, for example, and can accurately grasp the rotation angle of the motor 6.
- the measurement light reflected by the beam splitter 54 is reflected by the mirror 8, passes through the lens 9, is guided to the camera 200, and the measurement light transmitted through the sample can be imaged by the camera 200.
- the beam splitter 54 and the mirror 8 are provided on the rotating shaft 61.
- the autocollimation prism 10 is inserted on the optical path between the beam splitter 54 and the mirror 8. It is possible.
- the camera 200 can be constituted by a CCD (Charge Coupled Device) camera, for example.
- the camera 200 is not limited to the configuration provided at the position as described above.
- the measurement light is guided to the camera 200 via a beam splitter that is attached to the disk 7 and provided separately from the beam splitter 54.
- a beam splitter that is attached to the disk 7 and provided separately from the beam splitter 54.
- Such a configuration may be used, or a configuration in which two or more cameras 200 are provided may be used.
- FIG. 2 is a block diagram illustrating a configuration example of the control unit 100 in the refractive index measurement apparatus of FIG.
- the operation of this refractive index measuring device is controlled by a control unit 100 including, for example, a CPU (Central Processing Unit).
- the control unit 100 functions as a scanning processing unit 101, a refractive index measurement processing unit 102, a display processing unit 103, and the like when the CPU executes a program.
- the scanning processing unit 101 causes the telemeter unit 50 to scan the V block prism 1 by rotating the motor 6.
- the scanning processing unit 101 rotates the motor 6 at a constant speed to change the angle at which the measurement light emitted from the sample is received.
- the refractive index measurement processing unit 102 performs processing for measuring the refractive index of the sample based on the rotation angle of the motor 6 rotated by the scanning processing unit 101 and the detection intensity in the detector 2. Specifically, by rotating the motor 6 and detecting the measurement light from the V block prism 1 at each rotation angle with the detector 2, the rotation angle with the highest detection intensity is specified, and the rotation angle and The refractive index of the sample can be measured based on the refractive index of the V block prism 1.
- the display processing unit 103 performs processing related to display on the display screen of the display unit 300.
- the display unit 300 includes, for example, a liquid crystal display, and may be provided in the refractive index measuring device or may be provided separately from the refractive index measuring device.
- the display processing unit 103 can display the relationship between the rotation angle of the motor 6 rotated by the scanning processing unit 101 and the detection intensity in the detector 2 in a graph on the display screen of the display unit 300, for example. Further, the display processing unit 103 can display an image of measurement light captured by the camera 200 on the display screen of the display unit 300.
- FIG. 3 is a diagram illustrating an example of the display screen 301 of the display unit 300. As shown in FIG. 3, in the present embodiment, a graph 311 representing the detection intensity of the measurement light detected by the detector 2 and an image 312 captured by the camera 200 are displayed on a single display screen 301 in real time. It is like that.
- the graph 311 is displayed on the display screen 301 with the rotation angle of the motor 6 as the horizontal axis and the detection intensity at the detector 2 as the vertical axis, for example. Since the captured image 312 by the camera 200 is an image of the measurement light that has passed through the slit 46, it is displayed on the display screen 301 as a linear image corresponding to the shape of the slit 46, for example, as shown in FIG.
- an image of one measurement light is displayed as the captured image 312 by the camera 200.
- the measurement light transmitted through the sample is in a plurality of directions.
- an image of a plurality of measurement beams is displayed by the emission.
- an imaging switching key 313, an enlarged display key 314, a start key 315, a stop key 316, and the like are displayed on the display screen 301.
- the imaging switching key 313 and the enlarged display key 314 are displayed in the vicinity of the image 312 captured by the camera 200, for example.
- These keys 313 to 316 can be selected by operating an operation unit (not shown) constituted by, for example, a mouse or a keyboard.
- the imaging switching key 313 is selected to start or stop the display of the captured image 312 by the camera 200 on the display screen 301. As shown in FIG. 3, when a captured image 312 by the camera 200 is displayed on the display screen 301, the imaging switching key 313 is displayed as a display stop key. By selecting the display stop key, the captured image 312 is displayed. The display can be stopped. On the other hand, when the captured image 312 by the camera 200 is not displayed on the display screen 301, the imaging switching key 313 is displayed as a display start key, and the display of the captured image 312 is started by selecting the display start key. Can do.
- the enlargement display key 314 is selected to enlarge and display the image 312 captured by the camera 200 on the display screen 301 on another screen.
- a pop-up screen is displayed on the display screen 301, and the picked-up image 312 of the camera 200 enlarged while maintaining the aspect ratio is displayed on the pop-up screen.
- the start key 315 is selected to start scanning by the scanning processing unit 101.
- the graph 311 and the captured image 312 by the camera 200 are displayed on the display screen 301 in real time as scanning by the scanning processing unit 101 is performed. Note that the start key 315 may not be selected during measurement.
- a stop key 316 is selected to stop scanning by the scanning processing unit 101.
- the cancel key 316 is selected during the measurement, the measurement is stopped, and the display of the graph 311 on the display screen 301 and the captured image 312 by the camera 200 are stopped. Note that the stop key 316 may not be selected when the measurement is not in progress.
- the captured image of the camera 200 is displayed. There is no need to separately provide a display unit for displaying 312 and there is no cost.
- the actual state of the measurement light can be observed well during measurement.
- the work can be performed while confirming the captured image 312 of the camera 200 displayed on the display screen 301 in real time.
- the display screen 301 it is not necessary to provide an eyepiece, so that light outside the apparatus is incident from the eyepiece during measurement and detection by the detector 2 is performed. The influence on the result can be prevented, and the measurement can be performed satisfactorily.
- the measurement light can be measured well by checking in real time with the graph 311. It can be carried out.
- the display of the captured image 312 of the camera 200 on the display screen 301 can be started or stopped by selecting the imaging switching key 313 as necessary. Therefore, the graph 311 and the captured image 312 of the camera 200 can be displayed in real time on the single display screen 301 only when necessary, such as during measurement, and measurement can be performed satisfactorily.
- the captured image 312 of the camera 200 can be enlarged and displayed on a separate screen on the display screen 301 by selecting the enlarged display key 314 as necessary. Therefore, for example, when it is desired to adjust the position of the V block prism 1 more accurately, or when it is desired to observe the degree of blurring of the measurement light more accurately, the captured image 312 of the camera 200 is confirmed in an enlarged display. Work can be done well.
- FIG. 4 is a diagram illustrating an example of a change in display mode on the display screen 301 of the display unit 300.
- FIG. 4 shows an example of a graph 311 displayed in real time on the display screen 301 when measuring the refractive index of the sample and an example of an image 312 captured by the camera 200.
- the display processing unit 103 displays the detection intensity of the detector 2 that changes with the scanning by the scanning processing unit 101 in real time on the display screen 301 so as to draw continuously as a graph 311. That is, the detection intensity in the detector 2 changes as the scanning processing unit 101 scans, but the locus of change in the detection intensity from the start of measurement to that time is continuously displayed on the display screen 301 as a graph 311. Drawn.
- the display processing unit 103 displays the captured image 312 by the camera 200 in real time so as to move on the display screen 301 with scanning. That is, as the angle at which the measurement light emitted from the sample is received changes as the scan processing unit 101 scans, the position of the measurement light incident on the camera 200 also changes, as shown in FIGS. 4 (a) to 4 (c). As described above, the image 312 captured by the camera 200 moves on the display screen 301.
- the telemeter unit 50 is moved to the position where the detection intensity of the detector 2 is highest, so that the captured image 312 by the camera 200 is shown in FIG. It is maintained in the same state as in b).
- the graph 311 may be maintained in the same state as in FIG. 4C, or may not be displayed.
- the captured image 312 by the camera 200 at that time can be confirmed in real time on the same display screen 301 while confirming the graph 311 continuously drawn on the display screen 301 with scanning. Therefore, since the relationship between the detection intensity of the measurement light detected by the detector 2 and the captured image 312 of the camera 200 is easy to understand, measurement can be performed more satisfactorily.
- the scanning by the scanning processing unit 101 can be stopped and the measurement can be stopped by selecting the stop key 316 as necessary. Therefore, an abnormality was found while checking the graph 311 continuously drawn on the display screen 301 as it was scanned and checking the captured image 312 of the camera 200 at that time in real time on the same display screen 301. In some cases, the measurement can be stopped immediately, so that the measurement can be performed better.
- the configuration in which the measurement light is guided from the light source unit 3 to the detector 2 along the horizontal direction has been described.
- the configuration is not limited to this, and at least a part of the optical path of the measurement light from the light source unit 3 to the detector 2 may be inclined with respect to the horizontal direction.
- the rotating shaft 61 of the motor 6 is not limited to the configuration extending in the horizontal direction, and may be configured to extend in a direction inclined with respect to the horizontal direction.
- the configuration of the optical member provided in the optical path of the measurement light from the light source unit 3 to the detector 2 is not limited to the configuration illustrated in the above embodiment, and other optical members may be provided, Some optical members may be omitted.
- the scanning processing unit 101 is not limited to the configuration in which scanning is performed by changing the angle at which the measurement light emitted from the sample is received, but the configuration in which scanning is performed by changing the angle of the measurement light incident on the sample. It may be.
- a collimator unit (not shown) that holds a collimator lens is fixed to a disc, and the disc is rotated by a motor, thereby changing the angle of the collimator unit with respect to the V block prism 1 to perform scanning.
- the structure which can be used may be sufficient.
- the present invention is not limited to a V-block type refractive index measuring apparatus, and other types such as an Abbe system can be used.
- the present invention can also be applied to a refractive index measuring device.
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Abstract
Description
2 検出器
3 光源部
4 第1光学系
5 第2光学系
6 モータ
7 円板
8 ミラー
9 レンズ
10 オートコリメーションプリズム
31 光源
32 ミラー
41 レンズ
42,43,44 ミラー
45 干渉フィルタ
46 スリット
47 コリメータレンズ
50 テレメータ部
51,52 ミラー
53 テレメータレンズ
54 ビームスプリッタ
61 回転軸
100 制御部
101 走査処理部
102 屈折率測定処理部
103 表示処理部
200 カメラ
300 表示部
301 表示画面
311 グラフ
312 撮像画像
313 撮像切替キー
314 拡大表示キー
315 開始キー
316 中止キー
Claims (5)
- 試料に測定光を照射することにより試料の屈折率を測定する屈折率測定装置であって、
試料を透過した測定光を検出する検出器と、
試料を透過した測定光を撮像するカメラと、
前記検出器により検出される測定光の検出強度を表すグラフ、及び、前記カメラにより撮像される測定光の画像を、1つの表示画面にリアルタイムで表示させる表示処理部とを備えたことを特徴とする屈折率測定装置。 - 試料から出射する測定光を受光する角度、又は、試料に入射する測定光の角度を変化させることにより走査を行う走査処理部をさらに備え、
前記表示処理部は、前記走査処理部による走査に伴い変化する前記検出器の検出強度をグラフとして連続的に描画するように前記表示画面にリアルタイムで表示させるとともに、前記カメラにより撮像される画像を前記表示画面上で走査に伴い移動するようにリアルタイムで表示させることを特徴とする請求項1に記載の屈折率測定装置。 - 前記表示処理部は、前記表示画面に対する前記カメラにより撮像される画像の表示を開始又は停止させるための撮像切替キーを前記表示画面に表示させることを特徴とする請求項1又は2に記載の屈折率測定装置。
- 前記表示処理部は、前記カメラにより撮像される画像を前記表示画面に別画面で拡大表示させるための拡大表示キーを前記表示画面に表示させることを特徴とする請求項1~3のいずれかに記載の屈折率測定装置。
- 前記表示処理部は、前記走査処理部による走査を停止させるための中止キーを前記表示画面に表示させることを特徴とする請求項2に記載の屈折率測定装置。
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PCT/JP2013/067270 WO2014207809A1 (ja) | 2013-06-24 | 2013-06-24 | 屈折率測定装置 |
JP2015523687A JP6217748B2 (ja) | 2013-06-24 | 2013-06-24 | 屈折率測定装置 |
US14/900,371 US9940740B2 (en) | 2013-06-24 | 2013-06-24 | Refractometer |
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US20190107592A1 (en) * | 2016-03-09 | 2019-04-11 | Numares Ag | Method for Performing an NMR Measurement, Probe Arrangement for an NMR Spectrometer, and NMR Spectrometer Arrangement |
JP2019060713A (ja) * | 2017-09-26 | 2019-04-18 | 株式会社島津製作所 | 屈折率測定装置及び屈折率測定方法 |
JP2019060714A (ja) * | 2017-09-26 | 2019-04-18 | 株式会社島津製作所 | 液体試料測定用アタッチメント、屈折率測定装置及び屈折率測定方法 |
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JP2019060713A (ja) * | 2017-09-26 | 2019-04-18 | 株式会社島津製作所 | 屈折率測定装置及び屈折率測定方法 |
JP2019060714A (ja) * | 2017-09-26 | 2019-04-18 | 株式会社島津製作所 | 液体試料測定用アタッチメント、屈折率測定装置及び屈折率測定方法 |
US10627346B2 (en) | 2017-09-26 | 2020-04-21 | Shimadzu Corporation | Refractive index measuring device and refractive index measuring method |
Also Published As
Publication number | Publication date |
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US9940740B2 (en) | 2018-04-10 |
US20160163077A1 (en) | 2016-06-09 |
JP6217748B2 (ja) | 2017-10-25 |
JPWO2014207809A1 (ja) | 2017-02-23 |
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