Patent · US Active

Camera device and projector device having protective lens

US8885086B2 · kind B2 · utility

2Cited by

0References

9Claims

0Family size

Assignee

Tera Xtal Technology Corp. · TW

Inventors

Wei Wang · Beijing, CN
Chen-Hui Wu · Hsinchu, TW

Key dates

Filing date	Mar 11, 2013
Grant date	Nov 11, 2014
Priority date	—
Expiry date	Mar 27, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/46
WIPO fieldOptics
WIPO sectorInstruments

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 (1 210), (11 20), (2 110), ( 1120), ( 2110) and ( 12 10)], m-axis [including ( 1010), ( 1100), (01 10), (10 10), (1 100), and (0 110)], and r-axis [including (10 11), ( 101 1), (01 11), (0 111), (1 10 1) and r-axis ( 1101)].

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.