Ultrafast camera system and measurement method thereof
US11902495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2021 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Feb 22, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An ultrafast camera system includes a sensor head that injects an optical pulse train input from a pulsed laser onto a surface of a measurement target and outputs an optical signal reflected from the surface, and a timing detector that receives the optical signal whose time-of-flight is changed after passing through the sensor head and outputs an electrical signal corresponding to a timing error between the optical signal and a reference signal. Another ultrafast camera system includes a wavelength dispersion device to disperse an optical pulse train of a pulsed laser into a wavelength spectrum, a lens that vertically injects continuous wavelength signals dispersed into the wavelength spectrum onto a measurement line, and a timing detector that receives an optical signal including the continuous wavelength signals reflected from the measurement line, and outputs a timing error between the reference signal and the continuous wavelength signals as a signal intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.