Lens module and iris recognition camera module comprising same, and iris recognition camera system and terminal comprising same

An iris recognition camera system comprising:

• an optical unit configured to collect optical information of an iris;
• an imaging unit configured to output the optical information of the iris obtained from the optical unit;
• a calculation unit configured to analyze a position of a photographed iris image, generated by the imaging unit, on an image sensor;
• and
• a control unit configured to control driving of at least one display unit corresponding to a result value outputted from the calculation unit,
• wherein the optical unit comprises:
• a first group having positive refractive power;
• and
• a second group having negative refractive power,
• wherein the first group comprises no lens.

A lens module comprising:

• a first lens unit comprising at least one lens;
• a second lens unit provided so as to be opposite to the first lens unit and to be spaced apart from the first lens unit in a first direction corresponding to an optical axis direction, and comprising at least one lens;
• and
• a variable lens unit arranged between the first lens unit and the second lens unit and configured to control a focal length of the lens module.

A lens module comprising:

• a first lens unit comprising at least one lens;
• a second lens unit provided so as to be opposite to the first lens unit and to be spaced apart from the first lens unit in a first direction corresponding to an optical axis direction, and comprising at least one lens;
• a variable lens unit arranged between the first lens unit and the second lens unit and configured to control a focal length of the lens module by controlling control a diopter of the lens module, being a reciprocal of the focal length of the lens module;
• and
• a control unit configured to control the diopter of the variable lens unit.