WO2006136147A3 - Device for particle detection in a diffuser with a limited depth - Google Patents

Device for particle detection in a diffuser with a limited depth Download PDF

Info

Publication number
WO2006136147A3
WO2006136147A3 PCT/DE2006/001073 DE2006001073W WO2006136147A3 WO 2006136147 A3 WO2006136147 A3 WO 2006136147A3 DE 2006001073 W DE2006001073 W DE 2006001073W WO 2006136147 A3 WO2006136147 A3 WO 2006136147A3
Authority
WO
WIPO (PCT)
Prior art keywords
measuring volume
diffuser
video camera
depth
rod lenses
Prior art date
Application number
PCT/DE2006/001073
Other languages
German (de)
French (fr)
Other versions
WO2006136147A2 (en
Inventor
Jan Schulz
Original Assignee
Stiftung A Wegener Inst Polar
Jan Schulz
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stiftung A Wegener Inst Polar, Jan Schulz filed Critical Stiftung A Wegener Inst Polar
Publication of WO2006136147A2 publication Critical patent/WO2006136147A2/en
Publication of WO2006136147A3 publication Critical patent/WO2006136147A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • G01N15/1429—Signal processing
    • G01N15/1433—Signal processing using image recognition
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • G01N2015/1477—Multiparameters
    • G01N2015/1479—Using diffuse illumination or excitation
    • 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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N2021/4704—Angular selective
    • G01N2021/4726—Detecting scatter at 90°

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Known devices for detecting particles in an optically limited measuring volume operate either according to the scattered light principle or use an imaging video camera that only resolves two-dimensional surfaces. The depth dimension of the measuring volume remains unconsidered. The inventive device is embodied as a mobile or fixed plankton video recorder for counting and identifying plankton in marine waters. To this end, the optically limited measuring volume (MV) is embodied as a three-dimensional diffuser (LS), the depth thereof being limited by a linear light source (LQ), and the thickness (d) thereof being determined by rectangular aperture diaphragms (AB1, AB2) in the diaphragm system, and rod lenses (SL1, SL2, SL3) in the focussing lens system (LN). The rectangular aperture diaphragms (AB1, AB2) and rod lenses (SL1, SL2, SL3) are arranged in such a way that the axes thereof are congruent with the axis of the linear light source (LQ), and the focussing line (FL) of the rod lenses (SL1, SL2, SL3) lies in front of the measuring volume (MV). A video camera (VK) used as a recording system (AS) is arranged orthogonally in relation to the diffuser (LS). The depth of the focussing range of the video camera (VK) is determined by direct illumination. The illuminated particles are only to be seen in the illuminated measuring volume.
PCT/DE2006/001073 2005-06-19 2006-06-18 Device for particle detection in a diffuser with a limited depth WO2006136147A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005028893.6 2005-06-19
DE102005028893A DE102005028893B4 (en) 2005-06-19 2005-06-19 Device for particle detection in a depth-limited lens

Publications (2)

Publication Number Publication Date
WO2006136147A2 WO2006136147A2 (en) 2006-12-28
WO2006136147A3 true WO2006136147A3 (en) 2007-04-19

Family

ID=37429286

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/001073 WO2006136147A2 (en) 2005-06-19 2006-06-18 Device for particle detection in a diffuser with a limited depth

Country Status (2)

Country Link
DE (1) DE102005028893B4 (en)
WO (1) WO2006136147A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2333515A1 (en) 2009-12-11 2011-06-15 Bayer Technology Services GmbH Device for detecting luminous and/or light-diffusing particles in flowing liquids
DE102012211992A1 (en) * 2012-07-10 2014-01-30 Siemens Aktiengesellschaft Arrangement for laser-based detection of particles, has laser light source that irradiates particles with laser light, and photodetector that receives laser light scattered from particles and redirected by Fresnel lens
DE102013220004A1 (en) * 2013-10-02 2015-04-02 Siemens Aktiengesellschaft Apparatus and method for determining sizes of particles in a fluid
DE102017122718A1 (en) 2017-09-29 2019-04-04 Carl Zeiss Microscopy Gmbh Method and apparatus for optically examining a plurality of microscopic samples

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD221861A1 (en) * 1984-01-25 1985-05-02 Adw Ddr LIGHTING DEVICE FOR GENERATING A LIGHT STRIP
DE3925148A1 (en) * 1988-07-30 1990-02-01 Horiba Ltd PARTICLE COUNTER
US5191388A (en) * 1991-12-18 1993-03-02 Flow Vision, Inc. Apparatus for detecting and analyzing particulate matter in a slurry flow
WO1996009530A1 (en) * 1994-09-21 1996-03-28 Laser Sensor Technology, Inc. Improved imaging probe system
DE29813109U1 (en) * 1998-07-23 1998-10-22 Lieberwirth Peter Claus Dipl I Optical lighting device for producing a narrow and long light band
US20040223135A1 (en) * 2000-08-25 2004-11-11 Amnis Corporation Methods of calibrating an imaging system using calibration beads

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4854705A (en) * 1988-04-05 1989-08-08 Aerometrics, Inc. Method and apparatus to determine the size and velocity of particles using light scatter detection from confocal beams
DE19736172B4 (en) * 1997-08-20 2004-02-05 Palas Gmbh Partikel- Und Lasermesstechnik Particle analysis method and apparatus
AU2891601A (en) * 1999-12-01 2001-06-12 Dubelaar Research Instruments Engineering Apparatus for the detection of particles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD221861A1 (en) * 1984-01-25 1985-05-02 Adw Ddr LIGHTING DEVICE FOR GENERATING A LIGHT STRIP
DE3925148A1 (en) * 1988-07-30 1990-02-01 Horiba Ltd PARTICLE COUNTER
US5191388A (en) * 1991-12-18 1993-03-02 Flow Vision, Inc. Apparatus for detecting and analyzing particulate matter in a slurry flow
WO1996009530A1 (en) * 1994-09-21 1996-03-28 Laser Sensor Technology, Inc. Improved imaging probe system
DE29813109U1 (en) * 1998-07-23 1998-10-22 Lieberwirth Peter Claus Dipl I Optical lighting device for producing a narrow and long light band
US20040223135A1 (en) * 2000-08-25 2004-11-11 Amnis Corporation Methods of calibrating an imaging system using calibration beads

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE COMPENDEX [online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; UMHAUER H: "PARTICLE SIZE DISTRIBUTION ANALYSIS BY SCATTERED LIGHT MEASUREMENTS USING AN OPTICALLY DEFINED MEASURING VOLUME", XP002415874, Database accession no. EIX84040055665 *
J AEROSOL SCI 1983, vol. 14, no. 6, 1983, pages 765 - 770 *

Also Published As

Publication number Publication date
DE102005028893A1 (en) 2006-12-28
DE102005028893B4 (en) 2007-12-06
WO2006136147A2 (en) 2006-12-28

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