Eyesight protection device, eyesight protection system and detection method for eyesight protection device
US12300088B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 17, 2021 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Sep 17, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B7/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present disclosure provides an eyesight protection device, an eyesight protection system and an detection method for the eyesight protection device, which belongs to the technical field of communication, and can solve some problems in the prior art. The present disclosure provides an eyesight protection device, which includes: a millimeter-wave radar detection circuit, a control circuit and an alarm circuit. The millimeter-wave radar detection circuit is configured to detect a distance between a user and a reading material read by the user. The control circuit is configured to generate a first control signal at least when it is determined that the distance detected by the millimeter-wave radar detection circuit is smaller than a first predetermined value. The alarm circuit is configured to send out an alarm signal in response to the first control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.