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1. US20140212091 - OPTICAL PROBE

官庁
アメリカ合衆国
出願番号 14123932
出願日 07.02.2013
公開番号 20140212091
公開日 31.07.2014
公報種別 A1
IPC
G01B 9/02
G物理学
01測定;試験
B長さ,厚さまたは同種の直線寸法の測定;角度の測定;面積の測定;表面または輪郭の不規則性の測定
9このサブグループに記述され,かつ光学的測定手段の使用によって特徴づけられた計器
02干渉計
CPC
G01B 9/02091
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9Instruments as specified in the subgroups and characterised by the use of optical measuring means
02Interferometers ; for determining dimensional properties of, or relations between, measurement objects
02091Tomographic low coherence interferometers, e.g. optical coherence tomography
出願人 Sumitomo Electric Industries, Ltd.
発明者 Hasegawa Takemi
Hirano Mitsuharu
優先権情報 2012029303 14.02.2012 JP
発明の名称
(EN) OPTICAL PROBE
要約
(EN)

Provided is an optical probe that can perform low-noise precise OCT measurement even if an object with a high scattering property is measured. The optical probe 20 includes an optical fiber 21 that transmits light between a proximal end 21a and a distal end 21b, an optical connector 22 connected with the optical fiber 21 at the proximal end 21a, a focusing optical system 23 and a deflecting optical system 24 connected with the optical fiber 21 at the distal end 11b, and a support tube 25 and a jacket tube 26 surrounding the optical fiber 21 and extending along the optical fiber 21. The optical fiber 21 includes a core region 41 having a refractive index n1, a first cladding region 42 surrounding the core region and having a refractive index n2, a trench region 43 surrounding the first cladding region and having a refractive index n3, and a second cladding region 44 surrounding the trench region and having a refractive index n4. The refractive indices have a relationship of n1>n2>n3<n4.