Patent ID: 6504658
Filing Date: 2003-01-07
Classification: G02B

Abstract:
An optical device for presenting collimated images through a pupil of an eye of a user, comprising:an imager; a substantially spherical off-axis concave mirror, in which a path of a ray passing through a center of the pupil of the eye and a center of the imager forms intersecting optical axes, said substantially spherical concave mirror being tilted with respect to a first axis of the intersecting optical axes between said center of the pupil and said substantially spherical concave mirror; and an aspherical concave mirror tilted on a second axis of the intersecting optical axes corresponding to a reflection path of the first axis, wherein an intersection of the aspherical concave mirror with a plane of incidence of the second optical axis is a curve with a variable radius of curvature so as to correct a distortion of an image presented to the user, said distortion being due to the substantially spherical concave mirror.