Patent attributes
A lens module includes a lens barrel and two lenses. The lens barrel has two opposite end surfaces, and a receiving hole through the two end surfaces. The receiving hole has a center axis. A ring-shaped block is formed on an inside surface of the lens barrel, and is coaxial with the receiving hole. The ring-shaped block has two contact surfaces adjacent to the two end surfaces, respectively. Each of the lenses includes an optical axis and a fixing portion. Each fixing portion has a contact surface. The contact surface of the lens has a shape matching the contact surface of the ring-shaped block, and is coaxial with the optical axis of the lens. The contact surfaces of the lenses contact tightly with the contact surfaces of the ring-shaped block.
