Apparatus and method for acquiring time-resolved measurements utilizing direct digitization of the temporal point spread function of the detected light
US7446875B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2005 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Sep 7, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0059
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for acquiring time-resolved measurements from a sample from optical scanning comprises pulsed laser light directed to the sample; a first detector disposed to detect the light after exiting from the sample, the detected light being in the form of a first temporal point spread function (TPSF); a first amplifier to amplify the first TPSF; a first analog-to-digital converted (ADC) to directly digitize the first TPSF; a first buffer connected to the first ADC; a time-pickoff detector to initiate the first ADC to digitize the first TPSF; a clock burst generator initiated by the time-pickoff detector to provide conversion timing to the first ADC; and a computer programmed to fit the digitized first TPSF to a theoretical curve to extract its amplitude, and attenuation and scattering coefficients.A method for acquiring time-resolved measurements from a sample from optical scanning comprises directing a pulse of light onto a surface of the sample; detecting the light that exits from the sample in the form of a temporal point spread function (TPSF); directly digitizing the TPSF; and extracting a transport scattering coefficient and a absorption coefficient from the digitized TPS…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.