Invention Grant
- Patent Title: Photoacoustic measurement apparatus
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Application No.: US13003503Application Date: 2009-07-09
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Publication No.: US10041876B2Publication Date: 2018-08-07
- Inventor: Hiroshi Nishihara , Kazuhiko Fukutani , Takao Nakajima
- Applicant: Hiroshi Nishihara , Kazuhiko Fukutani , Takao Nakajima
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc., IP Division
- Priority: JP2008-182060 20080711
- International Application: PCT/JP2009/062846 WO 20090709
- International Announcement: WO2010/005109 WO 20100114
- Main IPC: A61B5/05
- IPC: A61B5/05 ; G01N21/17 ; A61B5/00 ; A61B5/145

Abstract:
A measurement apparatus capable of measuring a position and a size of an absorber with high accuracy, which includes: a light source unit for emitting a pulse beam; an illumination optical unit for leading the pulse beam emitted by the light source unit to an inside of an inspection object; and an acoustic signal detection unit for detecting a photoacoustic signal generated by the pulse beam in which the illumination optical unit includes a first and second illumination optical units that are arranged so that the inspection object is irradiated with the pulse beam from both sides thereof opposingly; and the acoustic signal detection unit is provided so that a detection surface of the acoustic signal detection unit is positioned on the same side as that of one of irradiation surfaces of the inspection object which the first and second illumination optical units irradiate with the pulse beam.
Public/Granted literature
- US20110112391A1 PHOTOACOUSTIC MEASUREMENT APPARATUS Public/Granted day:2011-05-12
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