Patent ID: 8270101

Claim:
A lens comprising: a central optically active part; and a peripheral optically inactive part surrounding the optically active part, the optically inactive part comprising a first surface, an opposite second surface, and a circumferential side surface connected between the first surface and the second surface, the side surface comprising a first support area adjacent to the first surface, a second support area adjacent to the second surface, and a glue guide area located between the first and second support areas, the glue guide area having a first groove defined therein, the first groove extending from the first support area to the second support area along a circumferential direction of the lens, the first groove comprising a first horizontal portion, a second horizontal portion, and a first oblique portion obliquely connected between the first horizontal portion and the second horizontal portion, and the first horizontal portion and the second horizontal portion being parallel to the first surface and the second surface respectively.