Lens clip for receiving user lens and head mounted electronic device for detecting whether user lens is inserted into lens clip

A lens clip to be mounted on a head mounted electronic device, the lens clip comprising:

• a housing having at least one opening defined therein;
• a protrusion disposed in a portion of the housing so as to protrude toward the at least one opening;
• and
• an internal wire electrically connected to the protrusion when a user lens is inserted into the at least one opening,
• wherein when the housing is mounted on the head mounted electronic device, the internal wire is electrically connected to a first electrode of the head mounted electronic device and the protrusion is electrically connected to a second electrode of the head mounted electronic device.

A head mounted electronic device comprising:

• a body;
• a lens clip disposed on the body and including at least one opening defined therein, wherein the lens clip includes a plurality of protrusions protruding toward the opening;
• an infrared-ray emissive device disposed the body and configured to emit an infrared-ray;
• an infrared-ray imaging device disposed on the body opposite to the infrared-ray emissive device, wherein the infrared-ray imaging device acquires a first eyeball image obtained when infrared-ray emitting from the infrared-ray emissive device is reflected from an eyeball of a user;
• and
• a processor operatively connected to the infrared-ray emissive device and the infrared-ray imaging device,
• wherein the processor is configured to:
• transmit a plurality of first signals corresponding to the plurality of protrusions to the lens clip;
• determine whether a user lens is inserted into the opening, and a power range of the user lens based on a plurality of second signals received in response to the plurality of first signals;
• upon determination that the user lens is not inserted into the opening, execute an eye tracking algorithm, based on a first eyeball image;
• and
• upon determination that the user lens is inserted into the opening, execute the eye tracking algorithm, based on a second eyeball image, and wherein the second eyeball image is obtained by removing an additional reflected light image resulting from the user lens and based on the power range of the user lens from the first eyeball image.