Patent ID: 6262849
Filing Date: 2001-07-17
Classification: G02B

Abstract:
Optical device for a system for a presentation of collimated images through the pupil of the eye of a user, comprising:an imager with an optical axis defined by a path of a ray passing through a centre of the pupil of the eye and a centre of the imager;an off-axis concave mirror inclined with respect to a first part of the optical axis defined by a line between the centre of the pupil and a centre of the off-axis concave mirror; anda Mangin mirror inclined on a second part of the optical axis corresponding to a reflection of the first part of the optical axis on the concave mirror,wherein the Mangin mirror includes a refracting material configured to correct an off-axis distortion of the image presented to the user due to the off-axis concave mirror.