Optical device combining spectacle function with augmented reality function and augmented reality device

An augmented reality device comprising:

• a spectacle lens having a first surface facing an eye of a user of the augmented reality device and a second surface facing away from the eye;
• a diffractive optical element disposed on the first surface of the spectacle lens or between the first surface and the second surface of the spectacle lens, wherein the diffractive optical element has a third surface facing the eye and a fourth surface facing away from the eye, and the diffractive optical element is a diffractive optical film or a diffractive optical plate;
• a projector outputting an image light beam, wherein the diffractive optical element is disposed on a transmission path of the image light beam, and the diffractive optical element projects the image light beam to the eye;
• and
• a light-shielding element disposed on the second surface of the spectacle lens, wherein the light-shielding element comprises a plurality of strip-shaped light-shielding structures,
• wherein an ambient light beam from an external environment is transmitted to the eye after passing through the spectacle lens and the diffractive optical element.