Patent ID: 7630131
Filing Date: 2009-12-08
Classification: H04N

Abstract:
1. An image display apparatus capable of switching a display mode between a directional display mode of displaying a first image in a first viewing direction and a second image in a second viewing direction and a non-directional display mode of displaying the same image in both the first and second viewing directions, the image display apparatus comprising: an image forming unit that forms an image and emits image light representing the image; and an optical member disposed adjacent to an emitting side of the image forming unit and used for switching the display mode, the optical member including: wherein the lens member includes two contact surfaces being in contact with the two plate members, respectively, and includes a curved side portion formed between the two contact surfaces, wherein, in the first usage state, the optical member is configured to perform the lens action on light passing through the curved side portion and not to perform the lens action on light passing through both of the two contact surfaces.