公开(公告)号：US20210080401A1

公开(公告)日：2021-03-18

申请号：US17108561

申请日：2020-12-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Genichiro Kudo ,  Kazumi Kimura ,  Hiroki Yoshida ,  Hiroto Kano

IPC: G01N21/88 ,  G02B27/10 ,  G02B17/08 ,  G02B5/00 ,  G02B27/42

Abstract: Optical system includes front group, light-shielding member, and rear group that are arranged in this order in direction from object side toward image side. The light-shielding member is provided with opening elongated in first direction. The front group has aspherical surfaces, does not image the object at the opening in first section parallel to the first direction, and forms intermediate image of the object at the opening in second section perpendicular to the first direction. The rear group has diffractive surface that splits light beam that passes through the opening into light beams at different wavelengths in the second section and focuses the light beams on different locations in the second section. Tilt angles of the aspherical surfaces in the second section change in the first direction.

公开(公告)号：US12019029B2

公开(公告)日：2024-06-25

申请号：US17108561

申请日：2020-12-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Genichiro Kudo ,  Kazumi Kimura ,  Hiroki Yoshida ,  Hiroto Kano

IPC: G01N21/88 ,  G01J3/02 ,  G01J3/28 ,  G01N21/31 ,  G01N21/47 ,  G01N21/84 ,  G02B5/00 ,  G02B13/02 ,  G02B13/04 ,  G02B13/08 ,  G02B17/08 ,  G02B27/10 ,  G02B27/42 ,  H04N23/00

CPC classification number: G01N21/8851 ,  G01J3/021 ,  G01N21/314 ,  G01N21/47 ,  G01N21/8806 ,  G02B5/005 ,  G02B13/02 ,  G02B13/04 ,  G02B13/08 ,  G02B17/0836 ,  G02B17/0848 ,  G02B27/1086 ,  G02B27/4205 ,  H04N23/00 ,  G01J3/2823 ,  G01N2021/8466 ,  G01N2201/0635

Abstract: Optical system includes front group, light-shielding member, and rear group that are arranged in this order in direction from object side toward image side. The light-shielding member is provided with opening elongated in first direction. The front group has aspherical surfaces, does not image the object at the opening in first section parallel to the first direction, and forms intermediate image of the object at the opening in second section perpendicular to the first direction. The rear group has diffractive surface that splits light beam that passes through the opening into light beams at different wavelengths in the second section and focuses the light beams on different locations in the second section. Tilt angles of the aspherical surfaces in the second section change in the first direction.

公开(公告)号：US20240046431A1

公开(公告)日：2024-02-08

申请号：US18365058

申请日：2023-08-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroki Yoshida

IPC: G06T5/00 ,  G06T7/11 ,  G06V20/58

CPC classification number: G06T5/006 ,  G06T7/11 ,  G06V20/58

Abstract: An image processing apparatus includes an acquisition unit that acquires a first image obtained by capturing an optical image by an optical system including a high distortion region in which distortion is large and a low distortion region in which distortion is small, a cutout unit that cuts out a partial image region from the first image to acquire a second image, and an expansion processing unit that expands the second image at an expansion magnification corresponding to distortion of the optical system, wherein the second image subjected to the expansion by the expansion processing unit is output to a display device.

公开(公告)号：US20210080403A1

公开(公告)日：2021-03-18

申请号：US17108661

申请日：2020-12-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroki Yoshida ,  Kazumi Kimura ,  Genichiro Kudo ,  Hiroto Kano

IPC: G01N21/94 ,  G02B27/42 ,  G02B17/08 ,  G02B5/00 ,  H04N5/232 ,  G06T7/00

Abstract: Optical system includes a front group, light-shielding member, and rear group that are arranged in this order in direction from object side toward image side. The light-shielding member is provided with opening elongated in first direction. The front group does not image the object at the opening in first section parallel to the first direction and forms intermediate image of the object at the opening in second section perpendicular to the first direction. The rear group has diffractive surface that splits light beam that passes through the opening into light beams at different wavelengths in the second section and focuses the light beams on different locations in the second section. Light beam that is emitted from the front group 11 and that enters the opening is non-parallel light in the first section.

公开(公告)号：US20210080322A1

公开(公告)日：2021-03-18

申请号：US17108782

申请日：2020-12-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Genichiro Kudo ,  Hiroto Kano ,  Kazumi Kimura ,  Hiroki Yoshida

IPC: G01J3/28 ,  G01J3/02

Abstract: Optical system includes front group, light-shielding member, and rear group that are arranged from object side toward image side. The light-shielding member is provided with opening elongated in first direction. The front group has aspherical surface, does not image the object at the opening in first section parallel to the first direction, and forms intermediate image of the object at the opening in second section perpendicular to the first direction. The rear group has diffractive surface that splits light beam that passes through the opening into light beams at different wavelengths in the second section and focuses the light beams on different locations in the second section. The curvature radius of the aspherical surface in the second section at on-axis position in the first direction differs from that at outermost off-axis position in the first direction.

公开(公告)号：US11674908B2

公开(公告)日：2023-06-13

申请号：US17108661

申请日：2020-12-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroki Yoshida ,  Kazumi Kimura ,  Genichiro Kudo ,  Hiroto Kano

IPC: G01J3/02 ,  G01N21/94 ,  G02B27/42 ,  G06T7/00 ,  G02B5/00 ,  G02B17/08 ,  H04N23/695

CPC classification number: G01N21/94 ,  G02B5/005 ,  G02B17/084 ,  G02B27/4205 ,  G06T7/0004 ,  H04N23/695

Abstract: Optical system includes a front group, light-shielding member, and rear group that are arranged in this order in direction from object side toward image side. The light-shielding member is provided with opening elongated in first direction. The front group does not image the object at the opening in first section parallel to the first direction and forms intermediate image of the object at the opening in second section perpendicular to the first direction. The rear group has diffractive surface that splits light beam that passes through the opening into light beams at different wavelengths in the second section and focuses the light beams on different locations in the second section. Light beam that is emitted from the front group 11 and that enters the opening is non-parallel light in the first section.

公开(公告)号：US11788958B2

公开(公告)日：2023-10-17

申请号：US17529103

申请日：2021-11-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroki Yoshida ,  Kazumi Kimura ,  Genichiro Kudo ,  Hiroto Kano

IPC: G02B5/18 ,  G02B13/08 ,  G01N21/47 ,  G01J3/28

CPC classification number: G01N21/4788 ,  G01J3/2823 ,  G02B5/18 ,  G02B13/08

Abstract: An optical system 10 includes a front group 11, a light shielding member 4, and a rear group 12 disposed in order from a side of an object to a side of an image. The light shielding member 4 has an opening. The rear group 12 has a diffraction surface 5 and an aspherical surface 6. The aspherical surface 6 in a first section has a non-circular-arc shape. The grating spacing of the diffraction surface 5 in the first section changes from a center portion toward a peripheral portion to include an extremum value at the center portion. In the first section, the shape of at least one of a base surface of the diffraction surface 5 and an optical surface disposed closer than the diffraction surface 5 to the side of the object is asymmetric with respect to a normal line at a vertex thereof.

公开(公告)号：US11385102B2

公开(公告)日：2022-07-12

申请号：US17108782

申请日：2020-12-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Genichiro Kudo ,  Hiroto Kano ,  Kazumi Kimura ,  Hiroki Yoshida

IPC: G01J3/28 ,  G01J3/02 ,  G01N21/88 ,  H04N5/225 ,  G02B3/02 ,  G02B5/18 ,  G02B13/08 ,  G02B17/00 ,  G02B27/42

Abstract: Optical system includes front group, light-shielding member, and rear group that are arranged from object side toward image side. The light-shielding member is provided with opening elongated in first direction. The front group has aspherical surface, does not image the object at the opening in first section parallel to the first direction, and forms intermediate image of the object at the opening in second section perpendicular to the first direction. The rear group has diffractive surface that splits light beam that passes through the opening into light beams at different wavelengths in the second section and focuses the light beams on different locations in the second section. The curvature radius of the aspherical surface in the second section at on-axis position in the first direction differs from that at outermost off-axis position in the first direction.

公开(公告)号：US20220074855A1

公开(公告)日：2022-03-10

申请号：US17529103

申请日：2021-11-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroki Yoshida ,  Kazumi Kimura ,  Genichiro Kudo ,  Hiroto Kano

IPC: G01N21/47 ,  G02B5/18 ,  G02B13/08 ,  G01J3/28

Abstract: An optical system 10 includes a front group 11, a light shielding member 4, and a rear group 12 disposed in order from a side of an object to a side of an image. The light shielding member 4 has an opening. The rear group 12 has a diffraction surface 5 and an aspherical surface 6. The aspherical surface 6 in a first section has a non-circular-arc shape. The grating spacing of the diffraction surface 5 in the first section changes from a center portion toward a peripheral portion to include an extremum value at the center portion. In the first section, the shape of at least one of a base surface of the diffraction surface 5 and an optical surface disposed closer than the diffraction surface 5 to the side of the object is asymmetric with respect to a normal line at a vertex thereof.

公开(公告)号：US20210080402A1

公开(公告)日：2021-03-18

申请号：US17108864

申请日：2020-12-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroto Kano ,  Kazumi Kimura ,  Hiroki Yoshida ,  Genichiro Kudo

IPC: G01N21/88 ,  G02B27/10 ,  G02B27/42 ,  G02B17/08 ,  G02B5/00 ,  G01N21/31

Abstract: Optical system includes front group, light-shielding member, and rear group that are arranged in direction from object side toward image side. The light-shielding member is provided with opening elongated in first direction. The front group does not image the object at the opening in first section parallel to the first direction and forms intermediate image of the object at the opening in second section perpendicular to the first direction. The rear group has diffractive surface that splits light beam that passes through the opening into light beams at different wavelengths in the second section and focuses the light beams on different locations in the second section. F-number for the side of the image in the first section differs from an F-number for the side of the image in the second section.