Light source device and electronic apparatus
US10866375B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 8, 2019 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Aug 8, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/02216
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light source device and an electronic apparatus are provided. The light source device includes a substrate, an electrode layer and a surrounding frame disposed on the substrate, a light emitter and a light detector mounted on the electrode layer and located inside of the surrounding frame, and a light permeable member disposed on the surrounding frame and covering the light emitter and the light detector. When the light emitter receives a predetermined current so as to emit an invisible light toward the light permeable member, the light detector receives a reflected part of the invisible light to generate an initial photocurrent. When the light emitter receives a manipulation current so that a detection photocurrent generated from the light detector is less than a first proportion of the initial photocurrent or greater than a second proportion of the initial photocurrent, the light emitter stops receiving the manipulation current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.