Glass surface stress meter and multiple-tempered glass surface stress meter
US11060930B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2016 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Apr 27, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B27/0442
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a glass surface stress meter and multiple-tempered glass surface stress meter, and the glass surface stress meter includes a light source (810, 910), a light refraction element (820, 920) and an imaging unit. The light refraction element (820, 920) is provided at a light-emitting direction of the light source (810, 910) for placing a measured glass (970). The light from the light source (810, 910) comes into the imaging unit to imaging after refracted by the light refractive element (820, 920). The imaging unit includes lens group (830, 940) and a imaging sensor (840, 960). A front end of the lens group is provided at the light-refraction direction of the light refraction element (820, 920) and a back-end is provided with the imaging sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.