Double-sided synchronous scanning device and double-sided synchronous scanner
US11689678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2021 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Sep 23, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/0282
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a double-sided synchronous scanning device. A scanning channel is formed between two scanning components; two backlight plates are respectively used to provide backlight for an opposite-side scanning component and fixed with the same-side scanning component; one side of each backlight plate facing the scanning channel is provided with a light guide groove corresponding to a light inlet of the corresponding scanning component; a backlight source is arranged in the light guide groove. When the two scanning components work synchronously, because the backlight plates always need to provide backlight for the opposite-side scanning component, and the reflected light generated by the backlight plates on a scanned sample enters the light inlet of the same-side scanning component, which will affect the image scanning effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.