| 摘要 |
A lens module includes a first lens, a second lens having a flat end surface and a cylindrical peripheral side surface, and a lens barrel. The lens barrel includes a hollow cylindrical body having a first end and an opposite second end, and a cap at the first end of the hollow cylindrical body. The cylindrical body has an inner space with the first lens received therein. The cap has a through hole defined therein and an inner annular step support formed on an inner surface of the cap in the through hole. The inner support has a first flat surface and an opposite second surface. The second lens is received in the throught hole with the flat end surface contacting with the first flat surface of the inner support and the cylindrical peripheral side surface contacting with the inner surface of the cap.
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