Photodetector
US11668826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2019 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Dec 25, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/413
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light reception array unit receives light irradiated from an irradiation unit and reflected from an object, and outputs in parallel a pulse signal respectively output from a plurality of light reception units. A timer unit measures an elapsed time since an input of an irradiation timing signal. A response acquisition unit acquires a number of responses, which is a number of the light reception units outputting the pulse signal, at each fixed cycle timing, and outputs an adjusted number of responses obtained by subtracting a bias value from the number of responses or dividing the number of responses by the bias value. An address of a memory is associated with a timer value measured by the timer unit. A histogram generation unit integrates and stores, in a memory address specified from a timer value, the adjusted number of responses as data at that address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.