公开(公告)号：EP4431888A1

公开(公告)日：2024-09-18

申请号：EP21963334.4

申请日：2021-11-08

Applicant: Otsuka Electronics Co., Ltd.

Inventor： SHIMODA, Kensaku

IPC: G01J9/02 ,  G03H1/08 ,  G01B11/24 ,  G01N21/45

CPC classification number: G03H1/04 ,  G01B11/24 ,  G01J9/02 ,  G01N21/45 ,  G03H1/08

Abstract: An optical measurement method includes: preparing an optical system for recording a hologram caused by modulating, with a reference beam, an object beam obtained by illumination of a sample with illumination light, the reference beam being coherent to the illumination light; arranging a calibration unit on an optical path of the illumination light in a state where there is no sample, the calibration unit including an optical system that produces a known optical wave distribution; recording a first hologram caused while the calibration unit is producing an optical wave distribution; and calculating information about an optical wave distribution of the reference beam based on information indicating a position where the calibration unit is arranged, the known optical wave distribution, and the first hologram.

公开(公告)号：EP4404004A1

公开(公告)日：2024-07-24

申请号：EP21957520.6

申请日：2021-09-16

Applicant: Otsuka Electronics Co., Ltd.

Inventor： SHIMODA, Kensaku ,  MIZUGUCHI, Tsutomu ,  SANO, Hiroyuki

IPC: G03H1/08 ,  G01B11/24 ,  G01N21/45 ,  G01N21/88

CPC classification number: G01B11/24 ,  G01N21/45 ,  G01N21/88 ,  G03H1/08

Abstract: An optical measurement system includes a first light source that generates near infrared rays, a silicon-based image sensor, and an optical system including a beam splitter that divides light from the first light source into first light and second light. The optical system records with the image sensor, a first hologram resulting from modulation with second light, of light obtained by illumination of a sample with the first light, the second light being diverging light.

公开(公告)号：EP4269938A1

公开(公告)日：2023-11-01

申请号：EP21910856.0

申请日：2021-12-22

Applicant: Otsuka Electronics Co., Ltd.

Inventor： SHIMODA, Kensaku

IPC: G01B11/24 ,  G01B9/021

Abstract: An optical measurement system capable of suppressing noise and realizing more accurate measurement is provided. The optical measurement system includes a light source, an image sensor, and an optical system including a beam splitter that divides light from the light source into first light and second light. The optical system can configure a first optical system that records with the image sensor, a first hologram resulting from modulation of first light with second light while there is no sample, the second light being diverging light, and a second optical system that records with the image sensor, a second hologram resulting from modulation with second light, of light obtained by illumination of a sample with first light. The second optical system includes a restriction mechanism that restricts spread of the light obtained by illumination of the sample with first light to be kept within a predetermined range.