IMAGE DISPLAY DEVICE, OCULAR OPTICAL SYSTEM, AND METHOD OF MANUFACTURING OCULAR OPTICAL SYSTEM

摘要

To provide an image display device that is advantageous in terms of a reduction in deterioration in image quality due to birefringence in an optical element of an ocular optical system in which polarized light is used, the image display device includes an ocular optical system including a polarization element and configured to guide light from an image display element toward an eyeball of an observer. The ocular optical system includes at least one optical element that has a forming gate mark in a part of an outer periphery. The forming gate mark is disposed in a direction of an apex of an image display region of the image display element with respect to a point on an optical axis of the ocular optical system in a cross section perpendicular to the optical axis of the ocular optical system.