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1.发明申请公开(公告)号：US20220382041A1
公开(公告)日：2022-12-01
申请号：US17641770
申请日：2020-09-09
Applicant: KOREA BASIC SCIENCE INSTITUTE , INSTITUTE FOR BASIC SCIENCE , GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： I Jong Kim , Ji Yong Bae , Hong Seung Kim , Geon Hee Kim , Ki Soo Chang , Cheonha Jeon , Il Woo Choi , Chang Hee Nam
Abstract: A spiral phase plate, according to one embodiment, for generating a Laguerre Gaussian beam by reflecting an incident beam emitted from a light source, may comprise: a first quadrant area in which the step height increase rate per unit angle decreases progressively in one direction from the point with the lowest step height to the point with the highest step height; and a second quadrant area in which the step height increase rate per unit angle increases progressively in the one direction.
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公开(公告)号：US20250123474A1
公开(公告)日：2025-04-17
申请号：US18813759
申请日：2024-08-23
Applicant: KOREA BASIC SCIENCE INSTITUTE
Inventor： Dong Uk Kim , Ki Soo Chang , I Jong Kim , Chan Bae Jeong , Dongmok Kim , Ilkyu Han
Abstract: A variable coherence illumination device is disclosed. The variable coherence illumination device includes a light source generator configured to emit a beam and configured to control a wavelength of the beam, a focusing lens configured to focus the beam, a first diffuser on which a beam passing through the focusing lens is incident, a second diffuser facing the first diffuser and rotatable around a rotation axis of the second diffuser, in which a focusing region on which the beam passing through the first diffuser is focused by the focusing lens is formed on the second diffuser, in which the focusing region of the second diffuser is spaced apart from the rotation axis of the second diffuser.
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3.发明授权公开(公告)号：US11947104B2
公开(公告)日：2024-04-02
申请号：US17641770
申请日：2020-09-09
Applicant: KOREA BASIC SCIENCE INSTITUTE , INSTITUTE FOR BASIC SCIENCE , GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： I Jong Kim , Ji Yong Bae , Hong Seung Kim , Geon Hee Kim , Ki Soo Chang , Cheonha Jeon , Il Woo Choi , Chang Hee Nam
CPC classification number: G02B26/06 , G02B26/0825 , G02B27/0068
Abstract: A spiral phase plate, according to one embodiment, for generating a Laguerre Gaussian beam by reflecting an incident beam emitted from a light source, may comprise: a first quadrant area in which the step height increase rate per unit angle decreases progressively in one direction from the point with the lowest step height to the point with the highest step height; and a second quadrant area in which the step height increase rate per unit angle increases progressively in the one direction.
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4.发明授权公开(公告)号：US10001363B2
公开(公告)日：2018-06-19
申请号：US15385886
申请日：2016-12-21
Applicant: Korea Basic Science Institute
Inventor： Kye Sung Lee , Gun Hee Kim , Hwan Hur , I Jong Kim , Ki Soo Chang
IPC: G01B9/02
CPC classification number: G01B9/02091 , G01B9/02007 , G01B9/02023 , G01B9/02044 , G01B9/02054 , G01B9/02057 , G01B2290/30
Abstract: Provided is a common-path optical fiber-based handheld parallel optical coherence tomography (OCT) apparatus, including a probe configured to receive the light from a broadband light source and illuminate a measurement target, wherein the probe may include an inner space through which the light passes, a collimator configured to collimate the light incident to the inner space, a diffraction grating configured to diffract the light having passed through the collimator, a galvanometer scanner configured to reflect the light having passed through the diffraction grating, an objective lens configured to concentrate the reflected light on a focal point, and an interferer configured to acquire an interfered light by reflecting at least a portion of the light having passed through the objective lens.
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