JPH0473849U - - Google Patents
Info
- Publication number
- JPH0473849U JPH0473849U JP11805290U JP11805290U JPH0473849U JP H0473849 U JPH0473849 U JP H0473849U JP 11805290 U JP11805290 U JP 11805290U JP 11805290 U JP11805290 U JP 11805290U JP H0473849 U JPH0473849 U JP H0473849U
- Authority
- JP
- Japan
- Prior art keywords
- particle size
- laser beam
- data
- size range
- size distribution
- 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
- 239000002245 particle Substances 0.000 claims description 21
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 claims 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Description
第１図および第２図は本考案の一実施例を示し
、第１図は本考案の粒度分布測定装置の概要を模
式的に示す図、第２図は前記粒度分布測定装置に
おけるリング状デイテクタを示す斜視図である。
第３図は従来の粒度分布測定装置の構成を示す斜
視図である。
１９……大径粒子検出用光学系、２０……小径
粒子検出用光学系、２１……試料容器、２２……
第１のレーザ光照射手段、２３……第２のレーザ
光照射手段、２５……リング状デイテクタ、２６
……フオトセンサ群、３２……データ入力手段、
３５……粒度分布算出手段、Ｌ１……第１のレー
ザ光、Ｌ２……第２のレーザ光。
1 and 2 show an embodiment of the present invention, FIG. 1 is a diagram schematically showing the outline of the particle size distribution measuring device of the present invention, and FIG. 2 is a ring-shaped detector in the particle size distribution measuring device. FIG.
FIG. 3 is a perspective view showing the configuration of a conventional particle size distribution measuring device. 19... Optical system for detecting large diameter particles, 20... Optical system for detecting small diameter particles, 21... Sample container, 22...
First laser beam irradiation means, 23...Second laser beam irradiation means, 25...Ring-shaped detector, 26
... photo sensor group, 32 ... data input means,
35... Particle size distribution calculation means, L1... First laser beam, L2... Second laser beam.
Claims (1)
対して所定波長の第１のレーザ光を照射する第１
のレーザ光照射手段および前記試料粒子によつて
回折もしくは散乱する各散乱角ごとの前記第１の
レーザ光の光強度をそれぞれ測定するリング状デ
イテクタを含む大径粒子検出用光学系と、前記試
料容器に対して前記第１のレーザ光よりも短い波
長の第２のレーザ光を照射する第２のレーザ光照
射手段および前記試料粒子によつて回折もしくは
散乱する各散乱角ごとの前記第２のレーザ光の光
強度をそれぞれ測定するフオトセンサ群を含む小
径粒子検出用光学系と、前記リング状デイテクタ
の測定データを粒子径が小さい粒度範囲のデータ
として、また前記フオトセンサ群の測定データを
粒子径が大きい粒度範囲のデータとして共に取り
込むデータ入力手段と、フラウンホーフア回折も
しくはミー散乱理論に基づき前記データ入力手段
による入力データから前記試料粒子の粒度分布を
粒子径が小さい粒度範囲から粒子径が大きい粒度
範囲にわたつて算出する粒度分布算出手段とを備
えたことを特徴とする粒度分布測定装置。 A first laser beam of a predetermined wavelength is irradiated onto a sample container containing a medium in which sample particles are dispersed.
a large-diameter particle detection optical system including a laser beam irradiation means and a ring-shaped detector for measuring the light intensity of the first laser beam diffracted or scattered by the sample particles at each scattering angle; a second laser beam irradiation means for irradiating the container with a second laser beam having a shorter wavelength than the first laser beam; and a second laser beam for each scattering angle that is diffracted or scattered by the sample particles. A small-diameter particle detection optical system including a group of photo sensors each measuring the light intensity of a laser beam, and the measurement data of the ring-shaped detector as data in a small particle size range, and the measurement data of the photo sensor group as data in a small particle size range. a data input means for inputting data in a large particle size range, and a particle size distribution of the sample particles from a small particle size range to a large particle size range based on input data from the data input means based on Fraunhofer diffraction or Mie scattering theory. 1. A particle size distribution measuring device comprising a particle size distribution calculating means for calculating a particle size distribution across the grain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11805290U JPH0473849U (en) | 1990-11-08 | 1990-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11805290U JPH0473849U (en) | 1990-11-08 | 1990-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0473849U true JPH0473849U (en) | 1992-06-29 |
Family
ID=31865956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11805290U Pending JPH0473849U (en) | 1990-11-08 | 1990-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0473849U (en) |
-
1990
- 1990-11-08 JP JP11805290U patent/JPH0473849U/ja active Pending
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