Camera device and projector device having protective lens
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)].
TERA XTAL TECHNOLOGY CORPORATION
G H G H G G
G02B H04N G02B H04N G02B G02B
additional inventional additional inventional additional additional
Chen-Hui Wei-Hsiang
Wu Wang