Title:
MEASUREMENT DEVICE AND MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2019/156247
Kind Code:
A1
Abstract:
To provide a measurement device to precisely measure a physical quantity of a measurement target having a sheet-like shape, the present invention provides a measurement device to measure a physical quantity of a measurement target having a sheet-like shape. The measurement device includes: a first integrating sphere which is separated by a gap from a first surface of the measurement target, has a first opening facing the first surface, and is not provided with a light detector to detect an intensity of light used for calculation of the physical quantity; a second integrating sphere which is separated by a gap from a second surface of the measurement target, where the second surface is positioned opposite to the first surface, and has a second opening facing the first opening with the measurement target sandwiched therebetween; a light source to emit light into the first integrating sphere; a light detecting unit to detect an intensity of light inside the second integrating sphere; and a calculating unit to calculate the physical quantity of the measurement target based on the intensity of light detected by the light detecting unit.
Inventors:
SETSUDA KAZUKI (JP)
HARA HITOSHI (JP)
ICHIZAWA YASUSHI (JP)
HARA HITOSHI (JP)
ICHIZAWA YASUSHI (JP)
Application Number:
PCT/JP2019/004754
Publication Date:
August 15, 2019
Filing Date:
February 08, 2019
Export Citation:
Assignee:
YOKOGAWA ELECTRIC CORP (JP)
International Classes:
G01B11/06; G01N21/86; G01N21/23; G01N21/3559; G01N33/34
Domestic Patent References:
WO2003040649A1 | 2003-05-15 |
Foreign References:
JP2004361149A | 2004-12-24 | |||
JPS6335949U | 1988-03-08 | |||
US4277177A | 1981-07-07 | |||
EP2026059A1 | 2009-02-18 | |||
JP2016095258A | 2016-05-26 | |||
US4748329A | 1988-05-31 | |||
JP2004361149A | 2004-12-24 | |||
JP2012063333A | 2012-03-29 | |||
JPS56168502A | 1981-12-24 | |||
JP2016095258A | 2016-05-26 |
Attorney, Agent or Firm:
RYUKA IP LAW FIRM (JP)
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