Patent ID: 6388827
Filing Date: 2002-05-14
Classification: G02B

Abstract:
An image display apparatus having a three-dimensionally decentered optical path, said image display apparatus comprising an image display device and a viewing optical system for leading an image formed by said image display device to a pupil corresponding to a position where an eyeball of an observer is to be placed,wherein said viewing optical system has at least a first reflecting surface and a second reflecting surface positioned closer to said pupil than said first reflecting surface along an optical path, wherein a first plane defined by an optical axis incident on said first reflecting surface and the optical axis reflected therefrom and a second plane defined by the optical axis incident on said second reflecting surface and the optical axis reflected therefrom intersect each other at an arbitrary angle, thereby forming a three-dimensionally decentered optical path, and wherein at least either one of said first reflecting surface and said second reflecting surface has a curved surface configuration.