![]() ![]() A paint of the fluorescent member 3 c may be coated on the detecting surfaces d of the ring detectors 3 b. The fluorescent member 3 c may include, for example, ZnS for generating fluorescent light upon incidence of the ultraviolet light. 2, the ring detector 3 b is a photodiode array formed of photodiodes with different radii disposed concentrically and having independent reception surfaces d (detecting surfaces) formed in a full ring, a half ring or a quarter ring shape. The measuring optical system 3 is formed of a condenser 3 a, a ring detector 3 b, and a fluorescent member 3 c attached on or disposed adjacent to a detecting surface (light incident surface) of the ring detector 3 b. measuring quenching effects, using measuring "optrodes" G01N21/6428- Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g.G01N21/64- Fluorescence Phosphorescence.G01N21/63- Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited.G01N21/62- Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light.using sub-millimetre waves, infrared, visible or ultraviolet light G01N21/00- Investigating or analysing materials by the use of optical means, i.e.G01N15/0211- Investigating a scatter or diffraction pattern.by light scattering, diffraction, holography or imaging G01N15/0205- Investigating particle size or size distribution by optical means, e.g.G01N15/02- Investigating particle size or size distribution.G01N15/00- Investigating characteristics of particles Investigating permeability, pore-volume, or surface-area of porous materials.G01N- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES.Assignors: TOTOKI, SHINICHIRO Publication of US20050083524A1 publication Critical patent/US20050083524A1/en Application granted granted Critical Publication of US7248363B2 publication Critical patent/US7248363B2/en Status Expired - Fee Related legal-status Critical Current Adjusted expiration legal-status Critical Links Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority claimed from JP2003-354788 external-priority Application filed by Shimadzu Corp filed Critical Shimadzu Corp Assigned to SHIMADZU CORPORATION reassignment SHIMADZU CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Shimadzu Corp 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 or warranty as to the accuracy of the list.) ( en Inventor Shinichiro Totoki Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related, expires Application number US10/949,190 Other versions US20050083524A1 Google Patents US7248363B2 - Particle size analyzerÄownload PDF Info Publication number US7248363B2 US7248363B2 US10/949,190 US94919004A US7248363B2 US 7248363 B2 US7248363 B2 US 7248363B2 US 94919004 A US94919004 A US 94919004A US 7248363 B2 US7248363 B2 US 7248363B2 Authority US United States Prior art keywords particle size particles laser beam light fluorescent member Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. ![]()
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