Patent ID: 8929001
Filing Date: 2015-01-06
Classification: G02B

Abstract:
1. A display device, comprising: an image projection unit to emit an image light including an image; an optical unit including: a first optical layer having a first major surface and a second major surface on a side opposite to the first major surface, the first optical layer being light-transmissive, the second major surface including a protruding portion having a surface having a curved configuration; a second optical layer having a third major surface and a fourth major surface on a side opposite to the third major surface, the second optical layer being light-transmissive, the third major surface facing the second major surface and including a recessed portion recessed along the protruding portion; and an intermediate layer provided between the second major surface and the third major surface, at least a portion of the image light travelling from the first major surface toward the second major surface being reflected by the intermediate layer and a reflected light being obtained at the intermediate layer, at least a portion of a background light travelling from the fourth major surface toward the third major surface being transmitted by the intermediate layer, at least one selected from the first major surface and the fourth major surface being a curved surface; and a mounting unit linked to the image projection unit and the optical unit to regulate a relative positional relationship between the optical unit and an eye of a human viewer to cause the image light to enter the optical unit from the first major surface and to cause the reflected light to emerge from the second major surface to enter the eye of the human viewer, wherein an first optical axis of the intermediate layer when the image light enters the optical unit from the first major surface and is reflected at the intermediate layer matches an second optical axis when a light entering from the fourth major surface passes through the third major surface, the intermediate layer, the second major surface, and the first major surface.