Photoacoustic measurement device and probe for photoacoustic measurement device
US9730588B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2014 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Mar 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object of the invention is to reduce the size of a probe for a photoacoustic measurement device. A light guide 71 is arranged such that one of a two side surfaces 71a is closer to a probe axis C which faces a subject than the other side surface and a light emission end surface 71c is closer to the probe axis C than a light incident end surface 71b when the probe is used. When a refractive index of the light guide 71 with respect to the light is n1 and a refractive index of a medium around the light guide with respect to the light during photoacoustic measurement is n2 (n2<n1), the light emission end surface 71c is obliquely formed such that an angle α[°] (where 90°−arcsin(n2/n1)<α<90°) is formed between the light emission end surface 71c and the side surface 71a.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.