Title:
PARTICLE ANALYSIS DEVICE AND PARTICLE ANALYSIS UNIT
Document Type and Number:
WIPO Patent Application WO/2021/075310
Kind Code:
A1
Abstract:
To provide a particle analysis device capable of repeatedly switching the light on and off in a short time and capable of applying a constant current to an LED when it is turned on, with an inexpensive configuration with the overall device compact kept compact, the particle analysis device that analyzes properties of particles from an image obtained by capturing an image of the particles comprises: an LED that emits light to particles in a cell; a constant current circuit that applies a constant current to the LED; and a switching device that is connected to the constant current circuit and that turns current flowing to the LED on and off, wherein the constant current circuit includes: a measurement device that is serially connected to the LED and that measures the current flowing to the LED to output measurement signals; a shunt regulator that outputs feedback signals on the basis of the measurement signals; and a current control device that controls current flowing to the LED by using feedback signals.
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Inventors:
TATEWAKI YASUHIRO (JP)
IZAWA MOMOKA (JP)
IZAWA MOMOKA (JP)
Application Number:
PCT/JP2020/037816
Publication Date:
April 22, 2021
Filing Date:
October 06, 2020
Export Citation:
Assignee:
HORIBA LTD (JP)
International Classes:
G01N21/01; G01N15/02; G01N21/17; H01L33/00
Domestic Patent References:
| WO2017195785A1 | 2017-11-16 |
Foreign References:
| JP2005269051A | 2005-09-29 | |||
| JP2010114224A | 2010-05-20 | |||
| JPS59127194A | 1984-07-21 | |||
| JP2010101719A | 2010-05-06 | |||
| JP2012215458A | 2012-11-08 | |||
| JPS57101999A | 1982-06-24 | |||
| KR20160115237A | 2016-10-06 |
Attorney, Agent or Firm:
NISHIMURA, Ryuhei (JP)
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