Non-contact interface device and method for controlling the same

A method for controlling a non-contact interface apparatus, the method comprising:

• displaying a hologram image through penetration of an operation system display image of a display mounted on a body portion through a hologram plate of the non-contact interface apparatus;
• detecting, by a camera mounted on the body portion, an operation of a body part of a user;
• determining, by a controller operatively connected to the camera, whether the body part of the user is put on a position where the body part of the user is able to operate the hologram image based on a detection signal of the camera;
• primarily operating, by the controller, a plurality of ultrasonic elements mounted on the body portion to provide the user with a tactile feedback upon concluding that the body part of the user is put on the position where the body part of the user is able to operate the hologram image;
• determining, by the controller, input coordinates for a menu of an operation system selected by the user among menus of the operation system being displayed as the hologram image based on the detection signal of the camera;
• and
• secondarily operating, by the controller, the plurality of ultrasonic elements to provide the user with the tactile feedback notifying the user that the menu of the operation system has selected,
• wherein the plurality of ultrasonic elements are mounted on an ultrasonic element alignment plate formed as an annular plate structure in the non-contact interface apparatus.