Patent ID: 7295377

Claim:
An HMD device comprising an image-generating unit for generating a polychromatic image and deflection optics comprising first and second partial optics, said deflection optics projecting the image such that it is perceivable by a user wearing said HMD device, wherein the two partial optics each contain a diffractive optical unit for beam deflection, which are designed such that their dispersion errors compensate each other, and wherein the second partial optics are arranged in front of the eye of a user wearing the HMD device so as to allow the user to perceive his environment through said optics, and the second partial optics have a refractive effect for correction of visual deficiencies of the user wearing the HMD device and the second partial optics have a curved material interface facing the user's eye, and wherein the diffractive optical unit of the second partial optics is located on the curved material interface and wherein the first partial optics have a first optical axis and the second partial optics have a second optical axis and wherein the first optical axis is substantially laterally displaced from and substantially parallel to the second optical axis and the diffractive optical unit of the first partial optics deflects light to the diffractive optical unit of the second partial optics.