Patent ID: 6097354
Filing Date: 2000-08-01
Classification: G02B

Abstract:
In an image display apparatus comprising an image display device which displays an image, and an ocular optical system which projects the image formed by said image display device and leads the image to an eyeball of an observer,the improvement wherein said ocular optical system has two surfaces, i.e. a first surface and a second surface, in which a space formed by said two surfaces is filled with a medium having a refractive index larger than 1,wherein at least one of the surfaces of said ocular optical system is a non-rotationally symmetric aspherical surface decentered or tilted with respect to an observer's visual axis, andwherein said first surface is a transmitting surface which serves as both an entrance surface for light rays emitted from said image display device and an exit surface through which the light rays exit from said ocular optical system, said first surface being convex toward the observer.