Augmented reality device for adjusting focus region according to direction of user's view and operating method of the same

An augmented reality (AR) device comprising:

• a first variable focus lens and a second variable focus lens;
• a waveguide disposed between the first variable focus lens and the second variable focus lens;
• at least one eye tracker configured to track a direction of an eye of a user of the AR device;
• a depth sensor configured to obtain depth information of at least one real world object;
• and
• one or more processors configured to:
• determine a first focus adjustment region of the first variable focus lens based on the direction of the eye,
• obtain a gaze point based on the direction of the eye,
• obtain, through the depth sensor, a depth value of a real world object disposed at the gaze point,
• adjust a refractive power of the first focus adjustment region based on the obtained depth value, and
• adjust a refractive power of a second focus adjustment region of the second variable focus lens based on the adjusted refractive power of the first focus adjustment region.