Patent attributes
Disclosed herein is a compact optical device for augmented reality. The compact optical device includes: an optical means configured to transmit at least part of image light, output from a real object, therethrough toward a pupil of an eye of a user and to reflect image light corresponding to an image for augmented reality, output from an image output unit, on an inner surface thereof and transfer the image light corresponding to an image for augmented reality to a first reflective unit; a first reflective unit disposed inside the optical means, and configured to reflect the image light corresponding to the image for augmented reality transferred from the inner surface of the optical means by reflection and transfer the image light corresponding to the image for augmented reality to a second reflective unit; and a second reflective unit disposed inside the optical means, and configured to reflect the image light corresponding to the image for augmented reality, transferred from the first reflective unit, and transfer the image light corresponding to an image for augmented reality toward the pupil of the eye of the user, thereby providing the image for augmented reality to the user; wherein the second reflective unit has a size smaller than 8 mm.
