Sensing device using proximity sensor and mobile terminal having the same

A mobile terminal comprising:

• a sensing device, disposed adjacent to a display unit provided in a front side of the mobile terminal and configured to control an operation of the display unit according to whether an external object approaches the display unit, the sensing device comprising:
• a proximity sensor configured to sense an approach of the external object using light reflected from the external device;
• and
• a lens unit disposed at a top of the proximity sensor comprising a lens body made of opaque materials and comprising a first through-opening through which light emitted from a light emitting unit of the proximity sensor passes and a second through-opening through which light reflected from the external object and entering into a light receiving unit of the proximity sensor passes.

A method for a mobile terminal, the method comprising:

• sensing, with a proximity sensor, an approach of an external object;
• passing light through a first through-opening in a lens body, the light emitted from a light emitting unit of the proximity sensor;
• and
• reflecting light through a second through-opening in the lens body, the reflected light reflected from the external object and entering into a light receiving unit of the proximity sensor, a reflective film formed in the lens body and configured to surround edges of the first through-opening and the second through-opening, the reflective film made of opaque materials.