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1. US20120257211 - Optical image measurement apparatus

官庁 アメリカ合衆国
出願番号 13517936
出願日 16.11.2010
公開番号 20120257211
公開日 11.10.2012
特許番号 08970846
特許付与日 03.03.2015
公報種別 B2
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
A61B 3/10
A生活必需品
61医学または獣医学;衛生学
B診断;手術;個人識別
3眼の検査装置;眼の診察機器
10客観型,すなわち患者の知覚または反応と無関係に眼を検査する装置
G01N 21/47
G物理学
01測定;試験
N材料の化学的または物理的性質の決定による材料の調査または分析
21光学的手段,すなわち,赤外線,可視光線または紫外線を使用することによる材料の調査または分析
17調査される材料の特性に応じて入射光が変調されるシステム
47散乱,すなわち拡散反射
CPC
A61B 3/102
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
102for optical coherence tomography [OCT]
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
G01N 21/4795
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
47Scattering, i.e. diffuse reflection
4795spatially resolved investigating of object in scattering medium
出願人 Kubota Atsushi
Kabushiki Kaisha Topcon
Abe Tomoyoshi
発明者 Kubota Atsushi
Abe Tomoyoshi
代理人 Pearne & Gordon LLP
優先権情報 2009293979 25.12.2009 JP
発明の名称
(EN) Optical image measurement apparatus
要約
(EN)

A main controller 211 controls a fiber-end drive mechanism 140 and an attenuator 121 with reference to the received-light amount of interference light LC to cause the following operations (1) and (2) to be executed alternately: (1) moving an emission end 116 to increase the received-light amount to at least an upper limit; and (2) changing the light amount of reference light LR to decrease the received-light amount to at least a lower limit. When the received-light amount specified by an received-light-amount specifying part 212 decreases in response to the movement of the emission end 116 in (1), the main controller 211 controls the fiber-end drive mechanism 140 to return the relative position to the immediately preceding status of this change. The main controller 211 leads the received-light amount of interference light LC by a CCD image sensor 120 to a target value by controlling the attenuator 121 to change the light amount of interference light LC.

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