Patent ID: 8379336

Claim:
A lens module comprising: a lens barrel comprising a circumferential sidewall, an accommodating cavity defined therein, and an adjusting through hole defined in the circumferential sidewall, the adjusting through hole communicating with the accommodating cavity; a first adjustable lens received in the accommodating cavity of the lens barrel, the first adjustable lens being a round lens, and having a circumferential side surface, the circumferential side surface having a first adjusting notch defined therein, the first adjusting notch communicating with the adjusting through hole; and a second adjustable lens above the first adjusting lens, the second adjustable lens comprising a second adjusting notch at a periphery thereof, a central optically active part, and a peripheral optically active part surrounding the central optically active part, the peripheral optically active part comprising a top surface, a bottom surface, and a ring-shaped connecting surface between the top surface and the bottom surface, the top surface defining the second adjusting notch, and the second adjusting notch running through the bottom surface, but not through the ring-shaped connecting surface; and a spacer received in the accommodating cavity of the lens barrel, the spacer located between the first and second adjustable lenses.