Camera device and projector device having protective lens
US9560279B2 · kind B2 · utility
0Cited by
0References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2014 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Apr 15, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A camera device includes a lens module and a birefringent sapphire lens. The sapphire lens is coupled to the lens module as a light window to protect the lens module. The sapphire lens has a crystal structure and a crystal axis. The crystal structure is a single-crystal structure and the crystal axis is one of c-axis (0001), a-axis [including (1210), (1120), (2110), (1120), (2110) and (1210)], m-axis [including (1010), (1100), (0110), (1010), (1100), and (0110)], and r-axis [including (1011), (1011), (0111), (0111), (1101) and r-axis (1101)].
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.