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

IPC: G02B26/06 ,  G02B26/08 ,  G02B27/00

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.

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

IPC: G02B26/06 ,  G02B26/08

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.

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.