Nanosecond gate spectroscopic diagnostic device
US6463314B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4795
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A diagnosis apparatus comprises a shutter (11) disposed between a light source (1) and a lens (12) opposed to biological tissue (13); a multi-channel spectrometer (polychromator) (16) for detecting a light emitting plume (14); a photodetector (5) for detecting a portion of a laser pulse from the light source (1); an oscilloscope (6) which monitors an output from the photodetector (5) to thereby measure a delay time of a gate trigger pulse supplied to a high-speed gate image intensifier (17); a pulse generator (8) capable of independently and freely adjusting the delay times of two output pulses in synchronization with the laser pulse; a gate controller (7) connected to the pulse generator (8) and the oscilloscope (6); the high-speed gate image intensifier (17) intensifying and imaging the output of the multi-channel spectrometer (16) whose gate is opened by the gate controller (7) over a period on the order of nanosecond; a CCD camera (9) capturing an output image from the high-speed gate image intensifier (17); and a data-processing apparatus comprising a frame image data storage (10A) which inputs spectroscopic image data of one frame from the CCD camera (9) as a time-series anal…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.