OPTICAL COHERENCE TOMOGRAPHY APPARATUS AND METHOD FOR CONTROLLING SAME

WIPO Patent Application WO/2021/149173

A1

Provided is an optical coherence tomography apparatus comprising: a wavelength-sweeping type light source for emitting laser light, the light source capable of wavelength-sweeping the wavelength of the emitted laser light over a sweeping range Δλ = λN - λ1 from a wavelength λ1 to a wavelength λN; a branching unit for branching the laser light emitted from the light source into measurement light and reference light; a scanning unit for directing the measurement light toward a predetermined region of an object to scan the same; an interference unit for generating interference light of reflection light from the predetermined region of the object and the reference light; a detection unit for detecting the interference light and outputting a detection signal; and a controlling unit for controlling the light source and the scanning unit such that the scanning unit scans the predetermined region M times and an irradiation initiation wavelength λm in the m-th scan satisfies λm = λ1 + (m - 1) × Δλ / M, where M and m are integers of M > m> 1, so as to obtain a tomographic image of the predetermined region of the object.

YAZAWA HIROKI (JP)
NISHIMURA KUMIKO (JP)
TERUI YUKI (JP)
ONISHI SHUTARO (JP)
FUKUDA ASAHI (JP)
KAMEI SHUN (JP)
NAKAYAMA SHIGERU (JP)

PCT/JP2020/002056

July 29, 2021

January 22, 2020

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NIKON CORP (JP)

A61B3/10

JP2019201952A	2019-11-28
JP2019045271A	2019-03-22
JP2018192001A	2018-12-06
US20150233700A1	2015-08-20

TAIYO, NAKAJIMA & KATO (JP)

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