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

IPC: G01J3/02 ,  G01N21/27 ,  G01N33/38

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.

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

IPC: G01N21/27 ,  G01N33/38

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.