公开(公告)号：US10219692B2

公开(公告)日：2019-03-05

申请号：US15322151

申请日：2015-06-30

Applicant: KOWA COMPANY, LTD.

Inventor： Naoki Kobayashi

IPC: A61B3/10 ,  A61B3/00 ,  G01B9/02

Abstract: The tomographic image capturing device of the present invention is configured to: split light from a light source (11) into measurement light and reference light; cause the measurement light and the reference light to be incident to an object (E) and a reference object (49), respectively; and capture tomographic images of the object (E) on the basis of interference light generated by superposition of the measurement light reflected from the object (E) and the reference light reflected from the reference object (49). The tomographic image capturing device has a first image capturing mode and a second image capturing mode. The first and second image capturing modes are each a mode in which the measurement light is two-dimensionally scanned to be incident to the object (E) and the tomographic images of the object (E) are captured. The two-dimensional scans in the second image capturing mode require a shorter time than that required for the two-dimensional scans in the first image capturing mode. The capturing of the tomographic images in the first image capturing mode is performed after performing adjustment of an image capturing condition necessary for capturing the tomographic images in the first image capturing mode. The adjustment is based on the tomographic images captured in the second image capturing mode.

公开(公告)号：US09989351B2

公开(公告)日：2018-06-05

申请号：US15329725

申请日：2015-07-29

Applicant: KOWA COMPANY, LTD.

Inventor： Naoki Kobayashi ,  Toshiaki Nakagawa

IPC: A61B3/14 ,  G01B9/02 ,  A61B3/10 ,  A61B3/13 ,  A61B3/15 ,  G01B11/02

CPC classification number: G01B9/02091 ,  A61B3/0058 ,  A61B3/102 ,  A61B3/13 ,  A61B3/15 ,  G01B9/02027 ,  G01B9/0203 ,  G01B9/02068 ,  G01B9/02077 ,  G01B11/02 ,  G01N21/17

Abstract: The tomographic image capturing device of the present invention comprises a display means (18) configured to: split light from a light source (11) into measurement light and reference light and cause the measurement light and the reference light to be incident to an object (E) and a reference object (49), respectively; capture tomographic images of the object (E) on the basis of interference light generated by superposition of the measurement light reflected from the object (E) and the reference light reflected from the reference object (49); and display tomographic pictures of the object generated on the basis of the captured tomographic images. The tomographic image capturing device has a first image capturing mode and a second image capturing mode. The first image capturing mode is a mode in which the measurement light is two-dimensionally scanned by raster scan to be incident to the object (E) and the tomographic images of the object (E) are captured. The second image capturing mode is a mode in which the measurement light is two-dimensionally scanned by raster scan to be incident to the object (E) and the tomographic images of the object (E) are captured. The raster scan in the second image capturing mode is thinned from the raster scan in the first image capturing mode. The display means (18) is configured to be switchable between a first display mode and a second display mode. The first display mode is a mode in which a plurality of tomographic pictures including a region of interest of the object (E) is selected from among the tomographic pictures generated on the basis of the tomographic images captured in the second image capturing mode and only the selected plurality of tomographic pictures is displayed. The second display mode is a mode in which all of the tomographic pictures generated on the basis of the tomographic images captured in the second image capturing mode are in turn displayed. The capturing of the tomographic images in the first image capturing mode is performed after separately performing a first adjustment operation and a second adjustment operation for adjustment of an image capturing condition necessary for capturing the tomographic images in the first image capturing mode. The first adjustment operation is based on the tomographic pictures displayed in the first display mode. The second adjustment operation is based on the tomographic pictures displayed in the second display mode.

公开(公告)号：US10188286B2

公开(公告)日：2019-01-29

申请号：US15553681

申请日：2016-02-26

Applicant: KOWA COMPANY, LTD.

Inventor： Naoki Kobayashi ,  Masaharu Mizuochi ,  Toshiaki Nakagawa

IPC: A61B3/10 ,  A61B3/14 ,  A61B3/00 ,  G01B9/02

Abstract: The tomographic image capturing device of the present invention includes a tomographic image capturing means that scans measurement light on a subject's eye fundus (E) to capture tomographic images of the subject's eye fundus and an image processing means that compresses a picture of the captured tomographic images in a scan direction to generate a new tomographic picture. The tomographic image capturing means performs scan at a second scan pitch (PL) narrower than a first scan pitch (PH) to capture the tomographic images of the subject's eye fundus. The image processing means compresses the picture (B11) of the tomographic images captured at the second scan pitch (PL) in the scan direction to generate the new tomographic picture (B12). The measurement width in the scan direction of the new tomographic picture (B12) is a width of a picture corresponding to a measurement width in the scan direction of a tomographic picture (Bn (n=1 to 10)) obtained by scan at the first scan pitch (PH).