公开(公告)号：US20230296506A1

公开(公告)日：2023-09-21

申请号：US18120746

申请日：2023-03-13

Applicant: TOPCON CORPORATION

Inventor： Shun Yamauchi ,  Yasuhito Haijima

IPC: G01N21/3554 ,  G01N21/3563

CPC classification number: G01N21/3554 ,  G01N21/3563

Abstract: A granular-substance component measuring method comprises steps of emitting detection light to granular substances filled in a space, receiving a reflected light from the granular substances and measuring a component of granular substances by a spectroscopy, and a displacement is given to the granular substances at each measurement, measurements are performed a plurality of times, and measurement results are averaged.

公开(公告)号：US20230296500A1

公开(公告)日：2023-09-21

申请号：US18120743

申请日：2023-03-13

Applicant: TOPCON CORPORATION

Inventor： Shun Yamauchi ,  Shugo Akiyama

IPC: G01N21/31 ,  G01N33/00

CPC classification number: G01N21/31 ,  G01N33/0098 ,  G01N2201/127 ,  G01N2201/062

Abstract: A grain-component sensor comprises a white LED for emitting a white light as a light emission source, a sample holder in which a sample is filled, a spectroscope for receiving a reflected light from the sample and performing a spectroscopic analysis, and as optical filter provided on an optical path between the white LED and the sample holder, the optical filter has an optical characteristic that is a transmittance of substantially 100% in a wavelength band from 950 nm to 1100 nm and cuts a light in a visible light region to substantially 0%, a light emitted from the white LED transmits through the optical filter and is irradiated to the sample as a detection light in a wavelength band from 950 nm to 1100 nm, and a diffused reflected light from the sample is condensed by a condenser lens and is entered the spectroscope.