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公开(公告)号：US11009453B2
公开(公告)日：2021-05-18
申请号：US16088131
申请日：2017-03-24
Applicant: TOPCON CORPORATION , MAEDA CORPORATION
Inventor： Issei Hanya , Shugo Akiyama , Ryosuke Tomizawa , Naoto Kasori , Yoshimitsu Nakajima , Yuji Shirane , Satoshi Suenaga
Abstract: A spectral curve acquiring device comprising: a light receiving optical system (6) for irradiating an irradiating light, a light receiving optical system (8) for dispersing and receiving a reflected irradiating light reflected by an object to be measured (7), a distance meter (4) for measuring a distance to the object to be measured, a storage module (25) for storing a plurality of reference spectral curves prepared based on a light receiving intensity for each wavelength at the time of measuring a white reference plate with different distances, and a control arithmetic module (24), wherein the control arithmetic module obtains a light receiving intensity of the dispersed reflected irradiating light for each wavelength based on the reference spectral curve corresponding to a distance to be measured, corrects a measurement spectral curve prepared based on the light receiving intensity, and prepares a spectral reflectance curve.
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2.发明申请公开(公告)号：US20200300753A1
公开(公告)日：2020-09-24
申请号：US16088131
申请日：2017-03-24
Applicant: TOPCON Corporation , MAEDA CORPORATION
Inventor： Issei Hanya , Shugo Akiyama , Ryosuke Tomizawa , Naoto Kasori , Yoshimitsu Nakajima , Yuji Shirane , Satoshi Suenaga
Abstract: A spectral curve acquiring device comprising: a light receiving optical system (6) for irradiating an irradiating light, a light receiving optical system (8) for dispersing and receiving a reflected irradiating light reflected by an object to be measured (7), a distance meter (4) for measuring a distance to the object to be measured, a storage module (25) for storing a plurality of reference spectral curves prepared based on a light receiving intensity for each wavelength at the time of measuring a white reference plate with different distances, and a control arithmetic module (24), wherein the control arithmetic module obtains a light receiving intensity of the dispersed reflected irradiating light for each wavelength based on the reference spectral curve corresponding to a distance to be measured, corrects a measurement spectral curve prepared based on the light receiving intensity, and prepares a spectral reflectance curve.
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公开(公告)号：US10345232B2
公开(公告)日：2019-07-09
申请号：US16065971
申请日：2016-12-21
Applicant: TOPCON CORPORATION
Inventor： Kaoru Kumagai , Shugo Akiyama , Issei Hanya , Peng Zhao , Masashi Funahashi , Yoshimitsu Nakajima , Yuji Shirane
IPC: G01N21/35 , G01N33/38 , G01N21/27 , G01N21/359
Abstract: A method of measuring a state of concrete includes emitting an irradiation light to the concrete, the irradiation light including a wavelength range of near infrared light related to concrete measurement; and receiving a reflection light of the irradiation light P reflected on the concrete. At least five wavelengths λ1 to λ5, λ6 to λ10, different from each other by PLS regression analysis within a wavelength range of 900 nm to 2500 nm of absorption spectrum, are determined, and a degree of neutralization of the concrete caused by calcium hydroxide and a concentration of chloride ion is estimated.
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